Module 3: Day-Ahead Market · Slide 2 Module Objectives: Day-Ahead Market ... Day-Ahead Market...

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Module 3: Day-Ahead Market

Transcript of Module 3: Day-Ahead Market · Slide 2 Module Objectives: Day-Ahead Market ... Day-Ahead Market...

Page 1: Module 3: Day-Ahead Market · Slide 2 Module Objectives: Day-Ahead Market ... Day-Ahead Market Trigger #2 • Three-Part Supply Offer ... 66 MW Procured 16 MW

Module 3: Day-Ahead Market

Page 2: Module 3: Day-Ahead Market · Slide 2 Module Objectives: Day-Ahead Market ... Day-Ahead Market Trigger #2 • Three-Part Supply Offer ... 66 MW Procured 16 MW

Slide 2

Module Objectives: Day-Ahead Market

Upon completion of this module,

learners will be able to:

• Describe the Day-Ahead Market and its

related settlements.

• Identify the actions that impact DAM

Settlements.

• Calculate the DAM Settlements

associated with Energy.

• Calculate the DAM Settlements

associated with Ancillary Services (AS).

• Define and calculate Make-Whole

Settlements in the Day-Ahead.

Day 1

Course Introduction

Congestion Revenue

Day-Ahead Market

Rights

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Slide 3

Energy

Awards

PTP Obligation

Awards

Ancillary

Service

Awards

Day-Ahead Market

Day-Ahead Market

Energy Bids &

Offers

PTP Obligation

Bids

Ancillary

Service Offers

Co-

Optimization

Engine

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Slide 4

Day-Ahead Market Settlements

DAM Commitment

• Make-Whole

DAM

Participation in DAM

• Energy

• Ancillary Services

• PTP Obligations

Settlement of CRRs in

the DAM

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Slide 5

Participation in the DAM: Outcomes

Energy Offers & Bids

Outcome

#2

Charge to QSE for Awarded Energy Bid in DAM

Payment to QSE for Awarded Energy

Offer in DAM

Outcome

#1

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

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Slide 6

DAM Settlements: Charge for an Awarded Energy Bid

• QSE5 submits an Energy Bid in the Day-

Ahead Market

Trigger

#1

DAM Energy Bid is a QSE’s willingness

to buy energy:

• Maximum price

• Up to a certain quantity

• At a specific Settlement Point in

the DAM

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Slide 7

DAM Settlements: Charge for an Awarded Energy Bid

• QSE5 submits an Energy Bid in the Day-Ahead

Market

• Bid Price = $45/MWh

• Quantity = 68MW for one hour

• At Load Zone 2

• ERCOT executes the DAM Clearing Process

Trigger

#1

• DAM prices Load Zone 2 at $40 / MWh

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Slide 8

DAM Settlements: Charge for an Awarded Energy Bid

• QSE5 purchased:

• 68 MW of Energy for

one hour

• At Load Zone 2

• Price of $40/MWh

Trigger

#1

Outcome

#1

(Day-Ahead Settlement Point Price) * (Quantity)

• Settled hourly

• Settlement calculation is:

($40/MWh) * (68 MW) = $2720

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Slide 9

DAM Settlements: Charge for an Awarded Energy Bid

Day-Ahead Energy Purchase Amount

DAEPAMT q, p = DASPP p * DAEP q, p

Day-Ahead Energy Purchase Amount

QSE Total

DAEPAMTQSETOT q =

Determinants

q = QSE

p = A Settlement Point

Day-Ahead Energy Purchase

Amount

Day-Ahead Settlement Point

Price

Day-Ahead Energy Purchase

Day-Ahead Energy Purchase

Amount QSE Total

P

DAEPAMT q, p

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

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Slide 10

Participation in the DAM: Outcomes

Energy Offers & Bids

Outcome

#2

Payment to QSE for Awarded Energy

Offer in DAM

Outcome

#1

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Charge to QSE for Awarded Energy Bid

in DAM

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Slide 11

DAM Settlements: Payment of an Awarded Energy Offer

• QSE1 submits an Energy Offer in the

Day-Ahead Market

Trigger

#2

• Three-Part Supply Offer

– Startup Offer

– Minimum Energy Offer

– Energy Offer Curve

• DAM Energy-Only Offer

Two types of Energy Offers

in Nodal Market

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Slide 12

DAM Settlements: Payment of an Awarded Energy Offer

• QSE1 submits an DAM Energy-Only Offer in the

Day-Ahead Market

• Offer Price = $16/MWh

• Quantity = 40 MW for one hour

• At Resource Node 4

• ERCOT executes the DAM Clearing Process

Trigger

#2

• DAM prices Resource Node 4 at $16/MWh

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Slide 13

DAM Settlements: Payment of an Awarded Energy Offer

• QSE1 sold:

• 40 MW of Energy for

one hour

• At Resource Node 4

• Price of $16/MWh

Trigger

#2

Outcome

#2

(-1) * (Day-Ahead Settlement Point Price) * (Quantity)

• Settled hourly

• Settlement calculation is:

(-1) * ($16/MWh) * (40 MW) = -$640

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Slide 14

Day-Ahead Energy Settlements - Payments

Day-Ahead Energy Sale

Amount

Day-Ahead Settlement Point

Price

Day-Ahead Energy Sale

Day-Ahead Energy Sale

Amount QSE Total

Day-Ahead Energy Sale Amount

DAESAMT q, p = (-1) * DASPP p * DAES q, p

Day-Ahead Energy Sale Amount QSE Total

DAESAMTQSETOT q = p

DAESAMT q, p

Determinants

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

q = QSE

p = A Settlement Point

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Slide 15

Day-Ahead Energy Settlements - Combined Cycle Resources

Combined Cycle Train (CCT)

• A group of Combustion Turbines (CT) and Steam Turbines (ST)

• Operate in one or more configurations

Combined Cycle Generation Resource (CCGR)

• A registered configuration of a Combined Cycle Train

• Offered as a single Resource

Any or all CCGRs from a

Combined Cycle Train may be

offered in the Day-Ahead Market.

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Slide 16

Day-Ahead Energy Settlements - Combined Cycle Resources

CCGR 1

CCGR 2

Combined Cycle Plant

Train 1 Train 2

ST1 CT1 CT2 CT3 ST2 CT4 CT5 CT6

DAM may start any offered

CCGR and transition from one

offered CCGR to another

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Slide 17

Settlement Point Locations in DAM

Transaction

Settlement Point

3PSO CCGR

3PSO

DAM

Energy

Only Offer

DAM

Energy Bid

PTP Obligation

Bids

QSE to QSE

Trades

Resource Node X X X X X

CCP Logical Resource

Node X

CCU Resource Node X X X X

Load Zone X X X X

Hub X X X X

Notes:

1. CCP = Combined Cycle Plant

2. CCU = Combined Cycle Unit

3. 3PSO = Three Part Supply Offer

4. CCGR = Combined Cycle Generation Resource

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Slide 18

Day-Ahead Market Settlements

DAM Commitment

• Make-Whole

DAM

Participation in DAM

• Energy

• Ancillary Services

• PTP Obligations

Settlement of CRRs in

the DAM

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Slide 19

Day-Ahead Market Ancillary Services Settlements

Types of Ancillary Services

• Regulation Up (Reg-Up)

• Regulation Down (Reg-Down)

• Responsive Reserve

• Non-Spin

Ancillary Service (AS) Plan

The required quantity in MW of each Ancillary Service

for each hour of the Operating Day ERCOT-wide

• Developed by ERCOT

• Posted to MIS Public Area by 0600

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Slide 20

Day-Ahead Market Ancillary Services Settlements

• Per QSE

• Per type of Ancillary Service (AS)

• Per hour

By 0600 Day-Ahead, ERCOT posts

each QSE’s AS Obligation to the MIS

Certified Area.

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Slide 21

Day-Ahead Market Ancillary Services Settlements

In the Day-Ahead Market:

QSE may Self-arrange by 1000:

• Self Supply its AS Obligation

• Trade to cover AS Obligation

QSE may Offer AS by 1000:

• Available capacities offered to ERCOT

ERCOT procures:

• Ancillary Services not self-arranged

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Slide 22

Participation in the DAM: Outcomes

Ancillary Services in the Day-Ahead

Market

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Outcome

#2

Charge to QSE for ERCOT procuring

AS on its behalf

Outcome

#1

Payment to QSE for Awarded AS Offer

in DAM

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Slide 23

DAM Settlements: Payment of an Awarded AS Offer

• QSE4 offers to sell AS in the

Day-Ahead Market

Trigger

#1

• Resource

• Quantity (tenths of MWs)

• Price

• Ancillary Service type

• Range of hours offered

• Expiration date and time of offer

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Slide 24

DAM Settlements: Payment of an Awarded AS Offer

• QSE4 submits an Offer to sell Ancillary Service

capacity

• Regulation Up (Reg-Up)

• 100 MW for at least $4/MW

• ERCOT executes the DAM Clearing Process

Trigger

#1

• DAM sets Day-Ahead Market Clearing Price

for Capacity (Reg-up) at $4/MW and awards

QSE4’s Offer

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Slide 25

DAM Settlements: Payment of an Awarded AS Offer

• QSE4 sold:

• 60 MW of Regulation Up (Reg-Up)

• Day-Ahead Market Clearing Price for

Capacity of $4/MW

Trigger

#1

Outcome

#1

(-1) * (Price) * (Quantity)

• Settled hourly

• Settlement calculation is:

(-1) * ($4/MW) * (60 MW) = -$240

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Slide 26

Day-Ahead Market Ancillary Services Payments

Regulation Up Service Payment

PCRUAMT q = (-1) * MCPCRU DAM * PCRU q, DAM

$-240 QSE4 = (-1) * $4/MW DAM * 60MW QSE4

Procured Capacity Reg-Up Amount

Procured Capacity Reg-Down Amount

Procured Capacity Responsive Reserve

Amount

Procured Capacity Non-Spin Amount Market Clearing Price Capacity Reg-Up

Market Clearing Price Capacity Reg-Down

Market Clearing Price Capacity Responsive

Reserve

Market Clearing Price Capacity Non-Spin Procured Capacity Reg-Up

Procured Capacity Reg-Down

Procured Capacity Responsive Reserve

Procured Capacity Non-Spin q = QSE

DAM = Day-Ahead Market

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Determinants

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Slide 27

Regulation Down Service Payment

PCRDAMTq = (-1) * MCPCRD DAM * PCRDq,DAM

Day-Ahead Market Ancillary Services Payments

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Regulation Up Service Payment

PCRUAMTq = (-1) * MCPCRU DAM * PCRUq, DAM

Responsive Reserve Service Payment

PCRRAMTq = (-1) * MCPCRR DAM * PCRRq,DAM

Non-Spinning Reserve Service Payment

PCNSAMTq = (-1) * MCPCNS DAM * PCNSq,DAM

Procured Capacity Reg-Up Amount

Procured Capacity Reg-Down Amount

Procured Capacity Responsive Reserve

Amount

Procured Capacity Non-Spin Amount Market Clearing Price Capacity Reg-Up

Market Clearing Price Capacity Reg-Down

Market Clearing Price Capacity Resp.

Reserve

Market Clearing Price Capacity Non-Spin Procured Capacity Reg-Up

Procured Capacity Reg-Down

Procured Capacity Responsive Reserve

Procured Capacity Non-Spin

Determinants

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Slide 28

Participation in the DAM: Outcomes

Ancillary Services in the Day-Ahead

Market

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Outcome

#2

Charge to QSE for ERCOT procuring

AS on its behalf

Outcome

#1

Payment to QSE for Awarded AS Offer

in DAM

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Slide 29

DAM Settlements: Charge for ERCOT Procurement of AS

If a QSE does not self-arrange all of its AS Obligation:

• ERCOT will procure the remaining portion in DAM

• ERCOT procures AS from available AS Offers

QSE5 AS Obligation

Portion of AS Obligation

QSE5 Self-Arranges

Portion of AS Obligation

ERCOT Needs to Procure

on QSE5’s Behalf

Reg-Up

Reg-Up

Reg-Up

AS Offers

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Slide 30

DAM Settlements: Charge for ERCOT Procurement of AS

A QSE may submit negative Self-Arranged AS Quantities:

• Limited to -500 MW for each Ancillary Service

• Limited in magnitude to net AS Trades (compliance only)

QSE5 Negative

Self-Arranged AS

ERCOT Needs to Procure

on QSE5’s Behalf

Reg-Up

Reg-Up

Reg-Up

AS Offers

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Slide 31

DAM Settlements: Charge for ERCOT Procurement of AS

A QSE may submit negative Self-Arranged AS Quantities:

• Limited to -500 MW for each Ancillary Service

• Limited in magnitude to net AS Trades (compliance only)

Impact:

ERCOT will charge the QSE for their share of the Ancillary

Service Capacities procured in DAM.

This provision applies

only to DAM; not

allowed in SASMs.

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Slide 32

DAM Settlements: Charge for ERCOT Procurement of AS

QSE3, QSE4, & QSE5 did not Self-Arrange entire AS Obligation for Responsive Reserve Service (RRS)

Trigger

#2

QSE4 AS Obligation (52 MW)

QSE3 AS Obligation (14 MW)

14 MW

Procured

36 MW

Procured

QSE5 AS Obligation (84 MW)

18 MW

Self-

Arranged

66 MW

Procured

16 MW

Self-

Arranged

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Slide 33

DAM Settlements: Charge for ERCOT Procurement of AS

• ERCOT needs to procure total of 116

MW of RRS

• ERCOT executes the DAM Clearing

Process and procures additional AS

from AS Offers

66 MW

Procured

For QSE 5

36 MW

Procured

For QSE 4

14 MW

Procured

For QSE 3

60 MW

Block

Offer

38 MW

Block

Offer

30 MW

Block

Offer

Trigger

#2

Total RRS:

• Total Quantity Needed = 116MW

• Total Quantity Procured = 128MW

• Total Cost = $512

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Slide 34

DAM Settlements: Charge for ERCOT Procurement of AS

• ERCOT needs to procure total of 116 MW of

RRS

• ERCOT executes the DAM Clearing Process

and procures 128 MW RRS from AS Offers

Trigger

#2

Outcome

#2

• Charged per QSE

• Settlement calculation:

(Price) * (Quantity)

Total Cost of RRS

Total RRS Needed (-1) * ( ) QSE obligation

not Self-Arranged ( ) *

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Slide 35

DAM Settlements: Charge for ERCOT Procurement of AS

Outcome

#2

QSE Price

Quantity Procured

on behalf of QSE

Total

QSE3 $4.41 / MW 14 MW $61.74

QSE4 $4.41 / MW 36 MW $158.76

QSE5 $4.41 / MW 66 MW $291.06

$512 / 116 MW

Total Cost of RRS

Total RRS Needed (-1) * ( ) QSE obligation

not Self-Arranged ( ) *

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Slide 36

Day-Ahead Market Ancillary Services Charges – Quantity

Responsive Reserve Quantity

DARRQ q = DARRO q – DASARRQ q

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

QSE3

14MW = 14MW – 0MW

QSE5

66MW = 84MW – 18MW

QSE4

36MW = 52MW – 16MW

Day-Ahead Reg-Down Quantity

Day-Ahead Reg-Down Obligation

Day-Ahead Self-Arranged Reg-Down Quantity

Day-Ahead Non-Spin Quantity

Day-Ahead Non-Spin Obligation

Day-Ahead Self-Arranged Non-Spin Quantity

Determinants

Day-Ahead Reg-Up Obligation

Day-Ahead Self-Arranged Reg-Up Quantity

Day-Ahead Resp Reserve Quantity

Day-Ahead Resp Reserve Obligation

Day-Ahead Self-Arranged Resp Reserve Quantity

Day-Ahead Reg-Up Quantity

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Slide 37

Day-Ahead Market Ancillary Services Charges – Quantity

(continued)

q = QSE

Responsive Reserve Quantity

DARRQ q = DARRO q – DASARRQ q

Regulation Down Quantity

DARDQ q = DARDO q – DASARDQ q

Regulation Up Quantity

DARUQ q = DARUO q – DASARUQ q

Non-Spinning Reserve Quantity

DANSQ q = DANSO q – DASANSQ q

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Day-Ahead Reg-Down Quantity

Day-Ahead Reg-Down Obligation

Day-Ahead Self-Arranged Reg-Down Quantity

Day-Ahead Non-Spin Quantity

Day-Ahead Non-Spin Obligation

Day-Ahead Self-Arranged Non-Spin Quantity

Determinants

Day-Ahead Reg-Up Obligation

Day-Ahead Self-Arranged Reg-Up Quantity

Day-Ahead Resp Reserve Quantity

Day-Ahead Resp Reserve Obligation

Day-Ahead Reg-Up Quantity

Day-Ahead Self-Arranged Resp Reserve Quantity

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Slide 38

Procured Capacity for Reg-Down Amount Total

Day-Ahead Market Ancillary Services Charges – Price (continued)

Responsive Reserve Price

DARRPR = (-1) * PCRRAMTTOT / DARRQTOT

$4.41/MW = (-1) * $-512 / 116 MW

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Procured Capacity for Reg-Up Amount Total

Day-Ahead Non-Spin Quantity Total

Day-Ahead Reg-Down Price

Day-Ahead Reg-Down Quantity Total

Procured Capacity for Non-Spin Amount Total

Day-Ahead Non-Spin Price

Determinants

Day-Ahead Reg-Up Price

Day-Ahead Reg-Up Quantity Total

Day-Ahead Responsive Reserve Price

Procured Capacity for Responsive Reserve

Amount Total

Day-Ahead Responsive Reserve Quantity Total

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Slide 39

Day-Ahead Market Ancillary Services Charges – Price (continued)

Responsive Reserve Price

DARRPR

= (-1) * PCRRAMTTOT / DARRQTOT

Regulation Down Price

DARDPR

= (-1) * PCRDAMTTOT / DARDQTOT

Regulation Up Price

DARUPR

= (-1) * PCRUAMTTOT / DARUQTOT

Non-Spinning Reserve Price

DANSPR

= (-1) * PCNSAMTTOT / DANSQTOT

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Day-Ahead Non-Spin Quantity Total

Day-Ahead Reg-Down Price

Day-Ahead Reg-Down Quantity Total

Procured Capacity for Non-Spin Amount Total

Day-Ahead Non-Spin Price

Determinants

Day-Ahead Reg-Up Price

Day-Ahead Reg-Up Quantity Total

Day-Ahead Responsive Reserve Price

Procured Capacity for Responsive Reserve

Amount Total

Day-Ahead Responsive Reserve Quantity Total

Procured Capacity for Reg-Down Amount Total

Procured Capacity for Reg-Up Amount Total

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Slide 40

Responsive Reserve Service Charge

DARRAMT q = DARRPR * DARRQ q

$61.74 QSE3 = $4.41/MW * 14MW QSE3

DAM Settlements: Charge for ERCOT Procurement of AS

Day-Ahead Reg Down Amount Day-Ahead Reg Down Price

Day-Ahead Reg Down Quantity

Day-Ahead Responsive Reserve Amount

Day-Ahead Responsive Reserve Price

Day-Ahead Responsive Reserve Quantity

Day-Ahead Non-Spinning Reserve Amount

Day-Ahead Non-Spinning Reserve Price

Day-Ahead Non-Spinning Reserve Quantity

Determinants

q = QSE

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Day-Ahead Reg Up Price Day-Ahead Reg Up Quantity

Day-Ahead Reg Up Amount

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Slide 41

DAM Settlements: Charge for ERCOT Procurement of AS

Responsive Reserve Service Charge

DARRAMT q = DARRPR * DARRQ q

Regulation Down Service Charge

DARDAMT q = DARDPR * DARDQ q

Regulation Up Service Charge

DARUAMT q = DARUPR * DARUQ q

Non-Spinning Reserve Service Charge

DANSAMT q = DANSPR * DANSQ q

q = QSE

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Day-Ahead Reg Down Amount Day-Ahead Reg Down Price

Day-Ahead Reg Down Quantity

Day-Ahead Responsive Reserve Amount

Day-Ahead Responsive Reserve Price

Day-Ahead Responsive Reserve Quantity

Day-Ahead Non-Spinning Reserve Amount

Day-Ahead Non-Spinning Reserve Price

Day-Ahead Non-Spinning Reserve Quantity

Determinants

Day-Ahead Reg Up Price Day-Ahead Reg Up Quantity

Day-Ahead Reg Up Amount

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Slide 42

Day-Ahead Market Settlements

DAM Commitment

• Make-Whole

DAM

Participation in DAM

• Energy

• Ancillary Services

• PTP Obligations

Settlement of CRRs in

the DAM

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Slide 43

Participation in the DAM: Outcomes

PTP Obligations Acquired in the

Day-Ahead Market

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

Outcome

#1

Charge to QSE for Awarded PTP

Obligation Bid in DAM

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Slide 44

PTP Obligations Acquired in the Day-Ahead Market

Day-Ahead Market PTP Obligations

• Hedge against congestion

costs in Real-Time

• Charge or payment when

Grid is congested in Real-Time

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Slide 45

PTP Obligations Acquired in the Day-Ahead Market

PTP Obligations

How acquired: Allocation / Auction DAM

Who Purchases: CRR Account Holder QSE

Tradable: Yes No

How Purchased: TOU Blocks Hourly

Initial Investment: Auction clearing price Day-Ahead SPPs

(Sink – Source)

Target Payout: Day-Ahead SPPs

(Sink – Source)*

Real-Time SPPs

(Sink – Source)*

* Other DAM charges may apply

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Slide 46

DAM Settlements: Charge for Purchased PTP Obligation

• QSE3 Bids to buy a PTP Obligation in

the DAM

Trigger

#1

• Source and Sink of PTP Obligation

• Not-to-Exceed Price ($ / MW / hr)

• Quantity (MW)

• Range of hours

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Slide 47

DAM Settlements: Charge for Purchased PTP Obligation

• QSE3 Bids to buy a PTP Obligation in the DAM

• Not-to-Exceed Price = $26/MWh

• Quantity = 10 MW

• Source Resource Node 4 (RN4)

• Sink Load Zone 2 (LZ2)

• ERCOT executes the DAM Clearing Process

Trigger

#1

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Slide 48

DAM Settlements: Charge for Purchased PTP Obligation

• QSE3 Bids to buy a PTP Obligation in the DAM

• Not-to-Exceed Price = $26/MWh

• Quantity = 10 MW

• Source is Resource Node 4 (RN4)

• Sink is Load Zone 2 (LZ2)

• ERCOT executes the DAM Clearing Process

Trigger

#1

PTP Obligation Price is $24/MWh

ERCOT awards QSE3 its PTP Obligation Bid

RN4 LZ2

$16/MWh $40/MWh DAM Prices:

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Slide 49

DAM Settlements: Charge for Purchased PTP Obligation

• QSE3 purchased:

• 10 MW of PTP Obligation

• Source Resource Node 4 (RN4)

• Sink Load Zone 2 (LZ2)

• Price of $24/MWh

Trigger

#1

Outcome

#1

(Price) * (Quantity)

• Settled hourly

• Settlement calculation is:

($24/MWh) * (10 MW) = $240

(SPP at Sink – SPP at Source) * (Quantity)

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Slide 50

DAM Settlements: Charge for Purchased PTP Obligation

Settlement for PTP Obligations Acquired

in the DAM

Day-Ahead Real-Time

Obligation Amount

Determinants

q = QSE

j = Source Settlement Point

k = Sink Settlement Point

Day-Ahead Obligation Price

Real-Time Obligation

DAOBLPR (j, k) = DASPP k – DASPP j

Day-Ahead Settlement Point

Price

DARTOBLAMT q, (j, k) = DAOBLPR (j, k) * RTOBL q, (j, k)

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

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Slide 51

DAM PTP Obligation Bids with Links to an Option

Special Product for NOIEs

• A NOIE (or their QSE) can buy PTP Obligations

linked to PTP Options they own.

• Cash out PTP Options in DAM

• Buy like quantity of DAM PTP Obligations

• No charge in Real-time if price spread is negative

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Slide 52

DAM Settlements: Charge for Purchased PTP Obligation

Settlement for DAM PTP Obligations

with Links to Options

Day-Ahead Real-Time

Obligation with Links to

an Option Amount

Determinants

q = QSE

j = Source Settlement Point

k = Sink Settlement Point

Day-Ahead Obligation Price

Real-Time Obligation with

Links to an Option

DAOBLPR (j, k) = DASPP k – DASPP j

Day-Ahead Settlement Point

Price

DARTOBLLOAMT q, (j, k) = Max (0, DAOBLPR (j, k)) * RTOBLLO q, (j, k)

DAM Participation in DAM

• Energy

• AS

• PTP Obligations

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Slide 53

Day-Ahead Market Settlements

DAM Commitment

• Make-Whole

DAM

Participation in DAM

• Energy

• AS

• PTP Obligations

Settlement of CRRs in

the DAM

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Slide 54

Day-Ahead Make-Whole Payment

Make-Whole Payment to DAM-Committed

QSE with a Three-Part Supply Offer

Outcome

#1

What: A payment to ensure generation costs are met when

Resource is DAM-committed

Why:

Guarantees that a DAM-committed Resource with a

Three-Part Supply Offer recovers its allowable cost

to Start-Up and its operating energy costs

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Slide 55

Day-Ahead Make-Whole Payment

Calculating the Day-Ahead Make-Whole Payment

$ Incremental

Energy Costs

Minimum

Energy Costs

Start-up Costs

Costs Incurred

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Slide 56

Day-Ahead Make-Whole Payment

Calculating the Day-Ahead Make-Whole Payment

Day-Ahead

Market Sales

$

Costs Incurred Revenues Received

Incremental

Energy Costs

Minimum

Energy Costs

Start-up Costs

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Slide 57

Day-Ahead Make-Whole Payment

Calculating the Day-Ahead Make-Whole Payment

Day-Ahead

Market Sales

$

Costs Incurred Revenues Received

Incremental

Energy Costs

Minimum

Energy Costs

Start-up Costs

Day-Ahead Market Sales =

DAM Energy Sales * SPP + AS Sales * MCPC

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Slide 58

Day-Ahead Make-Whole Payment

What if revenues are less than costs?

Day-Ahead

Market Sales

$

Revenue Shortage

Costs Incurred Revenues Received

Incremental

Energy Costs

Minimum

Energy Costs

Start-up Costs

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Slide 59

Day-Ahead Make-Whole Payment

What if revenues are less than costs?

Difference = Make-Whole Payment

Day-Ahead

Market Sales

$ Make-Whole Payment

Costs Incurred Revenues Received

Incremental

Energy Costs

Minimum

Energy Costs

Start-up Costs

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Slide 60

Day-Ahead Make-Whole Payment

What if revenues are less than costs?

Day-Ahead

Market Sales

$ Make-Whole Payment

Costs Incurred Revenues Received

DAM Guaranteed Amount

Incremental

Energy Costs

Minimum

Energy Costs

Start-up Costs

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Slide 61

Day-Ahead Make-Whole Payment

Trigger

#1

DAM Guaranteed

Amount ( ) ( ) < DAM

Revenues

A QSE will receive a Make-Whole Payment if its revenues

from the DAM are less than the Startup, Minimum

Energy, and Operating costs

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Slide 62

Day-Ahead Make-Whole Payment

Trigger

#1

DAM Guaranteed

Amount ( ) ( ) < DAM

Revenues

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Slide 63

Day-Ahead Make-Whole Payment

Calculate DAM Guaranteed Costs

DAM Guaranteed Costs = ( ) Startup costs

Minimum energy costs

Incremental Energy Costs

+

+

Startup Offer Minimum-Energy Offer Energy Offer Curve

$ to Start Up

$/MWh at LSL

$/MWh Above LSL

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Slide 64

Day-Ahead Make-Whole Payment

Calculate DAM Guaranteed Costs

Startup costs

Minimum energy costs

Incremental Energy Costs

DAM Guaranteed Costs =

• Minimum Energy Offer (MEO)

• Low Sustained Limit (LSL)

( ) +

+

$/MWh at LSL

$/MWh Above LSL

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Slide 65

Day-Ahead Make-Whole Payment

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Slide 66

Day-Ahead Make-Whole Payment

Calculate DAM Guaranteed Costs

DAM Guaranteed Costs =

• Day-Ahead Average Incremental Energy Cost (DAAIEC)

( ) Startup costs

Minimum energy costs

Incremental Energy Costs

+

+

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Slide 67

Day-Ahead Make-Whole Payment

Calculate DAM Guaranteed Costs

Calculate Average Incremental Energy Cost (AIEC)

Calculates the additional

cost for a Generation

Resource to produce

energy above its LSL

Energy Offer Curve

$/MWh

MW

LSL

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Slide 68

Day-Ahead Make-Whole Payment

Average Incremental Energy Cost (AIEC)

• LSL is the minimum

sustained energy

production

• DAESR is amount of

energy that was

cleared in the DAM

$/MWh

MW

DAESR LSL

Determinants

Low Sustained Limit

Day-Ahead Energy Sale

from Resource

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Slide 69

Day-Ahead Make-Whole Payment

Average Incremental Energy Cost (AIEC)

$/MWh

MW

DAESR LSL

The area under the curve

divided by the energy

cleared above LSL gives the

average cost per MWh for

that energy.

DAESR - LSL

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Slide 70

Day-Ahead Make-Whole Payment

Average Incremental Energy Cost (AIEC)

DAEOCPRCAP

$/MWh

MW

DAESR LSL

DAESR - LSL

For calculating Make-

Whole, the curve is

capped by the Day-

Ahead Energy Offer

Curve Price Cap

(DAEOCPRCAP)

The cap is defined in the

Protocols by technology

type.

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Slide 71

Day-Ahead Make-Whole Payment

Average Incremental Energy Cost (AIEC)

$/MWh

MW

DAESR LSL

DAEOCPRCAP

Area under curve

(DAESR-LSL)

Average cost for supplying

energy from the LSL to the

DAESR for the hour

AIEC =

DAESR - LSL

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Slide 72

DAESR - LSL

AIEC-AREA

Day-Ahead Make-Whole Payment

Average Incremental Energy Cost (AIEC)

DAESCLPR

$/MWh

MW

DAESR LSL

DAEOCPRCAP

DAEOCQTYCAP

Determinants

Low Sustained Limit

Day-Ahead Energy Sale

Clearing Price

Day-Ahead Energy Sale

from Resource

Day-Ahead Energy Offer

Curve Quantity Cap

Day-Ahead Energy Offer

Curve Price Cap

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Slide 73

Day-Ahead Make-Whole Payment

Trigger

#1

DAM Guaranteed

Amount ( ) ( ) < DAM

Revenues

Startup Offer (DASUO) $4,400

Minimum Energy Offer (DAMEO) $10/MWh

Low Sustained Limit (DALSL) 10MW

Day-Ahead AIEC (DAAIEC) $20/MWh

Day-Ahead Energy Sales (DAESR) 50 MW

DAMGCOST q, p, r = DASUO q, p, r + ∑(DAMEO q, p, r, h * DALSL q, p, r, h)

+ ∑(DAAIEC q, p, r, h * (DAESR q, p, r, h – DALSL q, p, r, h))

QSE1’s

Resource is

committed

for 4 hours

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Slide 74

Day-Ahead Make-Whole Payment

Trigger

#1

DAM Guaranteed

Amount ( ) ( ) < DAM

Revenues

DAMGCOST = DASUO + ∑(DAMEO * DALSL )

+ ∑(DAAIEC * (DAESR – DALSL ))

DAMGCOST = $4400 + ($10/MWh * 10MW) * 4h

+ ($20/MWh * (50MW –10MW )) * 4h

= $4400 + $400 + $3200

= $8000

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Slide 75

Day-Ahead Make-Whole Payment

< Trigger

#1

DAM Guaranteed

Amount ( ) ( ) DAM

Revenues

Startup Offer (SUO) $4,400

Minimum Energy Offer (MEO) $10/MWh

Low Sustained Limit (LSL) 10MW

Day-Ahead AIEC (DAAIEC) $20/MWh

Day-Ahead Energy Sales (DAESR) 50 MW

DAMGCOST q, p, r = SUO q, p, r + ∑ (MEO q, p, r, h * LSL q, p, r, h)

+ ∑(DAAIEC q, p, r, h * (DAESR q, p, r, h – LSL q, p, r, h))

QSE1’s

Resource is

committed

for 4 hours

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Slide 76

Day-Ahead Make-Whole Payment

Trigger

#1 ( ) ( ) < DAM

Revenues $8000

Revenues from Energy

Revenues from Ancillary Services

+

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Slide 77

Day-Ahead Make-Whole Payment

Energy Revenues for Hour 1

Trigger

#1 ( ) ( ) < DAM

Revenues $8000

Revenues = (-1) * (Price) * (Quantity)

DAEREV = (-1) * DASPP * DAESR

= (-1) * $30/MWh * 50 MW

= -$1500

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Slide 78

Day-Ahead Make-Whole Payment

Revenues = (-1) * (Price) * (Quantity)

Ancillary Services Revenues for Hour 1

Trigger

#1 ( ) ( ) < DAM

Revenues $8000

DAASREV q, r, h =

((-1) * MCPCRU DAM, h * PCRUR r, q, DAM, h)

+ ((-1) * MCPCRD DAM, h * PCRDR r, q,DAM, h)

+ ((-1) * MCPCRR DAM, h * PCRRR r, q,DAM, h)

+ ((-1) * MCPCNS DAM, h * PCNSR r, q,DAM, h)

-$180 q, r, h =

((-1) * $5/MW * 10 MW )

+ ((-1) * $5/MW * 10 MW)

+ ((-1) * $10/MW * 5 MW)

+ ((-1) * $15/MW * 2 MW)

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Slide 79

Day-Ahead Make-Whole Payment

DAM Revenues = DAEREV + DAASREV

Trigger

#1 ( ) ( ) < $8000 $7000

DAEREV DAASREV

Hour 1 -$1500 -$180

Hour 2 -$1500 -$220

Hour 3 -$1500 -$250

Hour 4 -$1500 -$350

Total for Commitment -$6000 -$1000

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Slide 80

DAEREV DAASREV

Hour 1 -$1500 -$180

Hour 2 -$1500 -$220

Hour 3 -$1500 -$250

Hour 4 -$1500 -$350

Total for Commitment -$6000 -$1000

DAM Revenues = DAEREV + DAASREV

Day-Ahead Make-Whole Payment

Trigger

#1 ( ) ( ) < $8000 $7000

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Slide 81

Day-Ahead Make-Whole Payment

• DAM Revenues are less than DAM

Guaranteed Costs for QSE1 unit 5

• QSE1 eligible for DAM Make-Whole

Payment

Trigger

#1 ( ) ( ) < $8000 $7000

Outcome

#1

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Slide 82

Day-Ahead Make-Whole Payment

Trigger

#1 ( ) ( ) <

Outcome

#1

DAMWAMT q, p, r, h =

(-1) * Max (0, DAMGCOSTq, p, r + ∑ DAEREVq, p, r, h + ∑ DAASREVq, r, h)

* (DAESR q, p, r, h / ∑ DAESR q, p, r, h)

DAM Make-Whole Payment for each hour

$8000 $7000

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Slide 83

Day-Ahead Make-Whole Payment

Trigger

#1 ( ) ( ) <

Outcome

#1

DAMWAMT = (-1) * Max (0, $8000 + $-6000 + $-1000)

* 50 MW / (200 MW)

= (-1) * Max (0, $1000) * 0.25 = -$250

DAM Make-Whole Payment for each hour

$8000 $7000

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Slide 84

Day-Ahead Make Whole - Combined Cycle Resources

What if the DAM-committed Resource is part of a

Combined Cycle Plant?

• Make-Whole is paid at the Train level

• DAM Guaranteed Amount

– Start-up Costs

– Minimum and Incremental Energy Costs

– May include Transition Costs

DAM may start any offered

CCGR and transition from one

offered CCGR to another

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Slide 85

Day-Ahead Make Whole - Combined Cycle Resources

CCGR 1

CCGR 2

Combined Cycle Plant

Train 1 Train 2

ST1 CT1 CT2 CT3 ST2 CT4 CT5 CT6

DAM Guaranteed Amount may

include Transition Cost from

CCGR1 to CCGR2

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Slide 86

DAMGCOST q, p, r = DASUO q, p, r + ∑(DAMEO q, p, r, h * DALSL q, p, r, h)

+ (Max(0, DASUO afterCCGR – DASUO beforeCCGR))

+ ∑(DAAIEC q, p, r, h * (DAESR q, p, r, h – DALSL q, p, r, h))

Day-Ahead Make Whole - Combined Cycle Resources

Trigger

#1

DAM Guaranteed

Amount ( ) ( ) < DAM

Revenues

Startup Offer (DASUO)

Minimum Energy Offer (DAMEO)

Low Sustained Limit (DALSL)

Day-Ahead AIEC (DAAIEC)

Day-Ahead Energy Sales (DAESR)

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Slide 87

Activity: Now it’s your turn!

Refer to your Settlements Workbook

In a small group, respond to the questions that

relate to Scenario #DAM1.

You have 5 – 10 minutes to complete your questions.

If you can not complete all questions, don’t worry

– all questions will be reviewed as a class.

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Slide 88

Day-Ahead Market Settlements

DAM Commitment

• Make-Whole

DAM

Participation in DAM

• Energy

• AS

• PTP Obligations

Settlement of CRRs in

the DAM

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Slide 89

Day-Ahead Make-Whole Charge

Make-Whole Charge to a QSE with one

or more cleared DAM Energy Bids

and/or PTP Obligation Bids

Outcome

#1

What: Charge to collect all funds needed for the Make-

Whole Payment

Why: Keep ERCOT revenue neutral

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Slide 90

Day-Ahead Make-Whole Charge

Total DAM Make-Whole

Payments ERCOT-Wide * ( ) ( ) DAM Energy Purchase

Ratio Share

=

( ) A QSE’s DAM Energy Purchase

Total DAM Energy Purchases

ERCOT - Wide

DAM DAM Commitment

• Make-Whole

DAM Energy Purchase

Ratio Share

Where…

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Slide 91

Day-Ahead Make-Whole Charge

• QSE3 has a cleared Energy Bid

from DAM

• Purchased 50 MW in the DAM

• ERCOT-Wide total energy

purchases in the DAM:

• 500 MW

Trigger

#1

Make-Whole Charge =

(-1) *

*

Outcome

#1 Total DAM Make-

Whole Payments + ( ) Total RMR DAM Make-

Whole Payments

A QSE’s DAM Energy Purchase

Total DAM Energy Purchases

( )

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Slide 92

• QSE3 has a cleared Energy Bid

from DAM

• Purchased 50 MW in the DAM

• ERCOT-Wide total energy

purchases in the DAM:

• 500 MW

Day-Ahead Make-Whole Charge

Trigger

#1

Make-Whole Charge = (-1) * (-$250) * 50MW / 500MW

= (-1) * (-$250) * .10

= $25

Outcome

#1

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Slide 93

Day-Ahead Energy Purchase Ratio

Share

Day-Ahead Make-Whole Charge

LADAMWAMT q = (-1) * (DAMWAMTTOT

+ RMRDAMWREVTOT) * DAERS q

Determinants

q = QSE

Load Allocated Day-Ahead Make-

Whole Amount

Day-Ahead Make-Whole Amount

Total

RMR Day-Ahead Make-Whole

Revenue Total

DAM DAM Commitment

• Make-Whole

= (-1) *

*

Total DAM Make-

Whole Payments + ( ) Total RMR DAM Make-

Whole Payments

A QSE’s DAM Energy Purchase

Total DAM Energy Purchases

( )

Make-Whole

Charge

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Slide 94

Day-Ahead Market Settlements

• Charges and Payments for CRRs

DAM Commitment

• Make-Whole

DAM

Participation in DAM

• Energy

• AS

• PTP Obligations

CRR Auction

• Revenue

Distribution

Settlement of CRRs in

the DAM

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CRR owners may be paid according to

their “target” payment.

Or their payments may be reduced:

• Derations

• CRR Shortfall Charges

Slide 95

Settling CRRs in the DAM

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Slide 96

Settling CRRs in the DAM

CRRs will be settled at the Target

Payment when not derated

Target Payment = Price * Quantity

DAM

Settlement of CRRs in

the DAM

Target Payment

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Slide 97

Settling CRRs in the DAM

Due to oversold transmission elements,

a CRR payment may be derated:

• If sink or source is a Resource Node

• If the Target Payment is a

positive value.

DAM

Settlement of CRRs in

the DAM

Deration of CRRs

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Slide 98

Deration is based on impact of

Resource Node on constraints

Resource Node

Constraint

Minimal impact

Minimal deration

Constraint

Resource Node

Significant impact

Significant deration

Deration of CRRs

Settling CRRs in the DAM

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Slide 99

Settling CRRs in the DAM

• Developed daily

• Reflects forecasted transmission

system for the next day

• Updated with scheduled outages and

forecasted system conditions

Day-Ahead

Network

Operations

Model

• Developed from the

Network Model

Deration of CRRs

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Slide 100

Settling CRRs in the DAM

Day-Ahead

Simultaneous

Feasibility Test

Day-Ahead

Network

Operations

Model

• Developed from the

Network Model

• Executed daily

• Verifies feasibility

of CRRs sold in

Auction

Prior to Day-Ahead Market

Deration of CRRs

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Slide 101

Settling CRRs in the DAM

Day-Ahead

Simultaneous

Feasibility Test

Day-Ahead

Network

Operations

Model

• Developed from the

Network Model

Transmission elements

not oversold

• Account Holders receive

Target Payment

Transmission elements

oversold

• Account Holders receive

reduced payment

Prior to Day-Ahead Market

Deration of CRRs

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Slide 102

(-1) * Max ( ) (Target Payment – Derated Amount)

or

Min (Target Payment or Hedge Value)

Hedge Value

Target Payment

Target Payment

-

Derated Amount

Settling CRRs in the DAM

Derated Payment

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Slide 103

Settling CRRs in the DAM

Derated Payment and Hedge Value

• Derating CRRs Reduces Gaming Opportunity

• Hedge Value maintains value of CRR as Hedge

• Minimum Resource Price

• Maximum Resource Price

Source j Sink k

Resource

Node

CRR

Resource

Node

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Slide 104

Source j Sink k

Resource

Node

Load Zone

or

Hub

RESOURCE TYPE MINRESPRJ MAXRESPRK

Nuclear -$20/MWh $15/MWh

Coal 0 $18/MWh

Simple Cycle > 90MW FIP*10 FIP*14

Combined Cycle > 90MW FIP*5 FIP*9

Wind -$35/MWh 0

CRR

HV PRICE (j, k) = Max (0, DASPP k – MINRESPR j)

Hedge Value Price

Settling CRRs in the DAM

Hedge Value

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Slide 105

Sink k Source j

Resource

Node

Load Zone

Or

Hub

RESOURCE TYPE MINRESPRJ MAXRESPRK

Nuclear -$20/MWh $15/MWh

Coal 0 $18/MWh

Simple Cycle > 90MW FIP*10 FIP*14

Combined Cycle > 90MW FIP*5 FIP*9

Wind -$35/MWh 0

CRR

Hedge Value Price

Settling CRRs in the DAM

Hedge Value

HV PRICE (j, k) = Max (0, MAXRESPR K - DASPP J)

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Slide 106

Source j Sink k

Resource

Node

CRR

Resource

Node

RESOURCE TYPE MINRESPRJ MAXRESPRK

Nuclear -$20/MWh $15/MWh

Coal 0 $18/MWh

Simple Cycle > 90MW FIP*10 FIP*14

Combined Cycle > 90MW FIP*5 FIP*9

Wind -$35/MWh 0

Hedge Value Price

Settling CRRs in the DAM

Hedge Value

HV PRICE (j, k) = Max (0, MAXRESPR k – MINRESPR j)

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Slide 107

CRRs Settled in the DAM

DAM

Settlement of CRRs in

the DAM

Outcome

#2

Payment to CRR AHs for settled

PTP Options in the DAM

Outcome

#1

Payment or Charge to CRR AHs for

PTP Obligations settled in the DAM

Settling CRRs in the DAM

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Slide 108

• CRRH5 was awarded PTP Obligations

in the CRR Auction

Settlement of PTP Obligations

Trigger

#1

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Slide 109

o = CRR Owner

Settlement of PTP Obligations

Target Payment for PTP Obligations

Determinants

DAOBLTP o, (j, k) = DAOBLPR (j, k) (Price) * DAOBL o, (j, k) (Quantity)

DAOBLPR (j, k) = DASPP k – DASPP j

j = Source Settlement Point

k = Sink Settlement Point

Day-Ahead Obligation Price

Day-Ahead Obligation

Target Payment

Day-Ahead Obligation

Quantity

Day-Ahead Settlement Point

Price

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Slide 110

Settlement of PTP Obligations

Determinants

Day-Ahead Obligation

Amount

Day-Ahead Obligation

Target Payment

o = CRR Owner

j = Source Settlement Point

k = Sink Settlement Point

DAOBLAMT o, (j, k) = (-1) * DAOBLTP o, (j, k)

Target Payment

When either

• Target Payment less than zero, or

• No Resource Node

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Slide 111

• CRRH5 was awarded PTP Obligations in the

CRR Auction

• Quantity: 10 MW

• Source : Resource Node 4

• $20/MWh

• Sink: Load Zone 3

• $30/MWh

• Price: $10/MWh

Settlement of PTP Obligations

Trigger

#1

Target Payment = Price * Quantity

Target Payment = $10/MWh * 10 MW

= $100 per hour

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Slide 112

Settlement of PTP Obligations

Derated Payment

Hedge Value

Target Payment

Target Payment

-

Derated Amount

(-1) * Max ( ) (Target Payment – Derated Amount)

or

Min (Target Payment or Hedge Value)

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Slide 113

o = CRR Owner

Settlement of PTP Obligations

Derated Amount of PTP Obligations

Determinants

DAOBLDA o, (j, k) = OBLDRPR (j, k) (Price) * DAOBL o, (j, k) (Quantity)

OBLDRPR (j, k) = (Max (0, DAWASF j, c –

DAWASF k, c) * DASP c * DRF c)

c = A constraint

j = Source Settlement Point

k = Sink Settlement Point

Day-Ahead Obligation

Derated Amount

Obligation Deration Price

Day-Ahead Obligation

Quantity

Day-Ahead Weighted

Average Shift Factor

Day-Ahead Shadow Price

Deration Factor

∑ c

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Slide 114

Derated Amount of PTP Obligations

Settlement of PTP Obligations

Determinants

DAOBLDA o, (j, k) = OBLDRPR (j, k) (Price) * DAOBL o, (j, k) (Quantity)

OBLDRPR = $0.75/ MW per hour

DAOBLDA = OBLDRPR * DAOBL

= $0.75/MW * 10 MW

= $7.50

Day-Ahead Obligation

Derated Amount

Obligation Deration Price

Day-Ahead Obligation

Quantity

Day-Ahead Weighted

Average Shift Factor

Day-Ahead Shadow Price

Deration Factor

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Slide 115

Settlement of PTP Obligations

Hedge Value for PTP Obligations

Determinants

Day-Ahead Obligation

Quantity

Day-Ahead Settlement Point

Price

Day-Ahead Obligation

Hedge Value

Day-Ahead Obligation

Hedge Value Price

DAOBLHVPR (j, k) = Max (0, DASPP k –

MINRESPR j)

DAOBLHV o, (j, k) = DAOBLHVPR (j, k) (Price) * DAOBL o, (j, k) (Quantity)

Minimum Resource Price Source j Sink k

Resource

Node

Load Zone

Or

Hub

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Slide 116

Settlement of PTP Obligations

Hedge Value for PTP Obligations

Determinants

Day-Ahead Obligation

Quantity

Day-Ahead Settlement Point

Price

Day-Ahead Obligation

Hedge Value

Day-Ahead Obligation

Hedge Value Price

DAOBLHVPR = Max (0, $30 – $15)

= $15/MWh

DAOBLHV o, (j, k) = DAOBLHVPR (j, k) (Price) * DAOBL o, (j, k) (Quantity)

Max Resource Price

Minimum Resource Price

Resource is Combined Cycle > 90MW

FIP = $3

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Slide 117

Settlement of PTP Obligations

Hedge Value for PTP Obligations

Determinants

Day-Ahead Obligation

Quantity

Day-Ahead Settlement Point

Price

Day-Ahead Obligation

Hedge Value

Day-Ahead Obligation

Hedge Value Price

DAOBLHV o, (j, k) = DAOBLHVPR (j, k) (Price) * DAOBL o, (j, k) (Quantity)

Max Resource Price

Minimum Resource Price

DAOBLHV = DAOBLHVPR * DAOBL

= $15/MWh * 10 MW

= $150 per hour

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Slide 118

Settlement of PTP Obligations

DAOBLAMT = (-1) * Max ( ) (Target Payment – Derated Amount)

or

Min (Target Payment or Hedge Value)

Hedge Value

Target Payment

Target Payment

-

Derated Amount

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Slide 119

Settlement of PTP Obligations

DAOBLAMT = (-1) * Max ( ) (DAOBLTP o, (j, k) – DAOBLDA o, (j, k) )

or

Min (DAOBLTP o, (j, k) or DAOBLHV o, (j, k) )

Outcome

#1

Hedge Value

Target Payment

Target Payment

-

Derated Amount

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Slide 120

Settlement of PTP Obligations

DAOBLAMT = (-1) * Max ( ) ($100 – $7.50)

or

Min ($100 or $150)

= -$100

Hedge Value

Target Payment

-

Derated Amount

$150

$100

$92.50

Target Payment

Outcome

#1

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Slide 121

Settlement of Congestion Revenue Rights

CRRs Settled in the DAM DAM

Settlement of CRRs in

the DAM

Outcome

#2

Payment to CRR AHs for settled

PTP Options in the DAM

Outcome

#1

Payment or Charge to CRR AHs for

PTP Obligations settled in the DAM

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Slide 122

• CRRH5 was also awarded PTP Options

in the CRR Auction

Settlement of PTP Options

Trigger

#2

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Slide 123

o = CRR Owner

Settlement of PTP Options

Target Payment for PTP Options

Determinants

DAOPTTP o, (j, k) = DAOPTPR (j, k) (Price) * OPT o, (j, k) (Quantity)

DAOPTPR (j, k) = Max (0, DASPPk – DASPPj)

j = Source Settlement Point

k = Sink Settlement Point

Day-Ahead Option Price

Day-Ahead Option Target

Payment

Option Quantity

Day-Ahead Settlement Point

Price

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Slide 124

Settlement of PTP Options

Determinants

Day-Ahead Option Amount

Day-Ahead Option Target

Payment

o = CRR Owner

j = Source Settlement Point

k = Sink Settlement Point

DAOPTAMT o, (j, k) = (-1) * DAOPTTP o, (j, k)

Target Payment

When no Resource Node,

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Slide 125

• CRRH5 was awarded PTP Options in the

CRR Auction

• Quantity: 10 MW

• Source: Resource Node 1

• $10/MWh

• Sink: Load Zone 3

• $30/MWh

• Price: $20/MWh

Settlement of PTP Options

Trigger

#2

Target Payment = Price * Quantity

Target Payment = $20/MWh * 10 MW

= $200 per hour

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Slide 126

Settlement of PTP Options

Derated Payment

(-1) * Max ( ) (Target Payment – Derated Amount)

or

Min (Target Payment or Hedge Value)

Hedge Value

Target Payment

Target Payment

-

Derated Amount

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Slide 127

Settlement of PTP Options

Derated Amount of PTP Options

Determinants

DAOPTDA o, (j, k) = OPTDRPR (j, k) (Price) * OPT o, (j, k) (Quantity)

Day-Ahead Weighted

Average Shift Factor

Day-Ahead Shadow Price

Deration Factor

Day-Ahead Option Derated

Amount

Option Deration Price

Option Quantity

o = CRR Owner

c = A constraint

j = Source Settlement Point

k = Sink Settlement Point

OPTDRPR (j, k) = (Max (0, DAWASF j, c –

DAWASF k, c) * DASP c * DRF c)

∑ c

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Slide 128

Settlement of PTP Options

Derated Amount of PTP Options

Determinants

DAOPTDA o, (j, k) = OPTDRPR (j, k) (Price) * OPT o, (j, k) (Quantity)

Day-Ahead Weighted

Average Shift Factor

Day-Ahead Shadow Price

Deration Factor

Day-Ahead Option Derated

Amount

Option Deration Price

Option Quantity

OPTDRPR = $2.50/ MW per hour

DAOPTDA = OPTDRPR * OPT

= $2.50/MW * 10 MW

= $25

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Slide 129

Settlement of PTP Options

Hedge Value for PTP Options

Determinants

Source j Sink k

Resource

Node

Load Zone

or

Hub

DAOPTHVPR (j, k) = Max (0, DASPP k –

MINRESPR j)

Option Quantity

Day-Ahead Settlement Point

Price

Day-Ahead Option Hedge

Value

Day-Ahead Option Hedge

Value Price

DAOPTHV o, (j, k) = DAOPTHVPR (j, k) (Price) * OPT o, (j, k) (Quantity)

Minimum Resource Price

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Slide 130

Settlement of PTP Options

Hedge Value for PTP Options

DAOPTHVPR = Max (0, $30 – $15)

= $15/MWh

DAOPTHV o, (j, k) = DAOPTHVPR (j, k) (Price) * OPT o, (j, k) (Quantity)

Resource is Combined Cycle > 90MW

FIP = $3

Determinants

Option Quantity

Day-Ahead Settlement Point

Price

Day-Ahead Option Hedge

Value

Day-Ahead Option Hedge

Value Price

Minimum Resource Price

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Slide 131

Settlement of PTP Options

Hedge Value for PTP Options

Determinants

Option Quantity

Day-Ahead Settlement Point

Price

Day-Ahead Option Hedge

Value

Day-Ahead Option Hedge

Value Price

DAOPTHV o, (j, k) = DAOPTHVPR (j, k) (Price) * OPT o, (j, k) (Quantity)

Max Resource Price

Minimum Resource Price

DAOPTHV = DAOPTHVPR * OPT

= $15/MWh * 10MW

= $150 per hour

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Slide 132

Settlement of PTP Options

DAOPTAMT = (-1) * Max ( ) (Target Payment – Derated Amount)

or

Min (Target Payment or Hedge Value)

Hedge Value

Target Payment

Target Payment

-

Derated Amount

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Slide 133

Settlement of PTP Options

DAOPTAMT = (-1) * Max ( ) (DAOPTTP o, (j, k) – DAOPTDA o, (j, k) )

or

Min (DAOPTTP o, (j, k) or DAOPTHV o, (j, k) )

Outcome

#2

Hedge Value

Target Payment

Target Payment

-

Derated Amount

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Slide 134

Settlement of PTP Options

DAOPTAMT = (-1) * Max ( ) ($200 – $25)

or

Min ($200 or $150)

= -$175

Hedge Value

Target Payment

-

Derated Amount $150

$200

$175

Target Payment

Outcome

#2

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Slide 135

Activity: Now it’s your turn!

Refer to your Settlements Workbook

In a small group, respond to the questions that

relate to Scenario #DAM2.

You have 5 – 10 minutes to complete your questions.

If you can not complete all questions, don’t worry

– all questions will be reviewed as a class.

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Slide 136

PCRRs Settled in the DAM

Settlement of Pre-Assigned Congestion Revenue Rights

Payment or Charge to CRR AHs for

settled PTP Obligations with Refund

Payment to CRR AHs for settled

PTP Options with Refund

Outcome

#2

Outcome

#1

DAM

Settlement of CRRs in

the DAM

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Slide 137

Settlement of PCRRs with Refund

The Quantity depends on the

Resource output in Real-Time

Price Quantity

(Lesser of)

DAM PCRR Price

between Source and

Sink

PCRR Quantity

Held by the NOIE

Resource Real-Time

Output based on its

Output Schedules

DAM

Settlement of CRRs in

the DAM

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Slide 138

Price Quantity

(Lesser of)

DAM PCRR Price

between Source and

Sink

PCRR Quantity

Held by the NOIE

Resource Real Time

Output based on its

Output Schedules

Settlement of PCRRs with Refund

The Option Quantity depends on

the Resource output in Real-Time

DAM

Settlement of CRRs in

the DAM

If no Output Schedule is

available, ERCOT will use

the time-weighted

generation for the hour.

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Slide 139

Settlement of PCRRs with Refund

For Example

Price Obligation Quantity

(Lesser of)

$50/MWh

100 MW PTP Obligation Quantity

Held by the NOIE

90 MW Resource Real-Time

Output based on its

Output Schedules

PTP Obligation

w/Refund Payment

$50/MWh x 90MW = $4500/h

DAM

Settlement of CRRs in

the DAM

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Slide 140

Settlement of PTP Obligations with Refund

• CRRH4 was allocated PTP Obligations

with Refunds

Trigger

#1

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Slide 141

Settlement of PTP Obligations with Refund

Determinants

o = CRR Owner

j = Source Settlement Point

k = Sink Settlement Point

DAOBLRAMT o, (j, k) = (-1) * DAOBLRTP o, (j, k)

Target Payment

Day-Ahead Obligation with

Refund Amount

Day-Ahead Obligation with

Refund Target Payment

When either

• Target Payment less than zero, or

• No Resource Node

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Slide 142

Settlement of PTP Obligations with Refund

Derated Payment

Hedge Value

Target Payment

Target Payment

-

Derated Amount

DAOBLRAMT = (-1) * Max ( ) (Target Payment – Derated Amount)

or

Min (Target Payment or Hedge Value)

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Slide 143

o = CRR Owner

Settlement of PTP Obligations with Refund

Target Payment for PTP Obligations with Refund

DAOBLRTP o, (j, k) = DAOBLPR (j, k) * Min (DAOBLR o, (j, k), OBLRACT o, (j, k))

j = Source Settlement Point

k = Sink Settlement Point

Quantity = Lesser of

(Obligations held or Actual Obligations used)

Determinants

Day-Ahead Obligation Price

Day-Ahead Obligation with

Refund Quantity

Day-Ahead Settlement Point

Price

Day-Ahead Obligation with

Refund Target Payment

Obligation with Refund

Actual Usage

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Slide 144

Derated Amount of PTP Obligations with Refund

o = CRR Owner

Settlement of PTP Obligations with Refund

Determinants

DAOBLRDA o, (j, k) = OBLDRPR (j, k) * Min (DAOBLR o, (j, k), OBLRACT o, (j, k))

OBLDRPR (j, k) = (Max (0, DAWASF j, c –

DAWASF k, c) * DASP c * DRF c)

c = A constraint

j = Source Settlement Point

k = Sink Settlement Point

Day-Ahead Obligation with

Refund Derated Amount

Obligation Deration Price

Day-Ahead Obligation with

Refund Quantity

Day-Ahead Weighted

Average Shift Factor

Day-Ahead Shadow Price

Deration Factor

∑ c

Obligation with Refund

Actual Usage

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Slide 145

Hedge Value for PTP Obligations with Refund

Settlement of PTP Obligations with Refund

Determinants

Day-Ahead Settlement Point

Price

Day-Ahead Obligation with

Refund Hedge Value

Day-Ahead Obligation

Hedge Value Price

DAOBLHVPR (j, k) = Max (0, DASPP k –

MINRESPR j)

DAOBLRHVo, (j, k) = DAOBLHVPR(j, k) * Min (DAOBLRo, (j, k), OBLRACTo, (j, k))

Minimum Resource Price Source j Sink k

Resource

Node

Load Zone

Day-Ahead Obligation with

Refund Quantity

Obligation with Refund

Actual Usage

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Slide 146

PCRRs Settled in the DAM

Settlement of Pre-Assigned Congestion Revenue Rights

Payment to CRR AHs for settled

PTP Options with Refund

Outcome

#2

DAM

Settlement of CRRs in

the DAM

Outcome

#1

Outcome

#1

Payment or Charge to CRR AHs for

settled PTP Obligations with Refund

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Slide 147

Settlement of PTP Options with Refund

• CRRH4 was allocated PTP Options with

Refund

Trigger

#2

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Slide 148

Settlement of PTP Options with Refund

Target or Derated Payment

Hedge Value

Target Payment

Target Payment

-

Derated Amount

DAOPTRAMT = (-1) * Max ( ) (Target Payment – Derated Amount)

or

Min (Target Payment or Hedge Value)

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Slide 149

o = CRR Owner

Settlement of PTP Options with Refund

Target Payment for PTP Options with Refund

DAOPTRTP o, (j, k) = DAOPTPR (j, k) * Min (OPTR o, (j, k), OPTRACT o, (j, k))

j = Source Settlement Point

k = Sink Settlement Point

Determinants

Day-Ahead Option Price

Day-Ahead Option with

Refund Target Payment

Quantity = Lesser of

(Options held or Actual Options used)

Option with Refund Actual

Usage

Option with Refund Quantity

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Slide 150

Derated Amount of PTP Options with Refund

o = CRR Owner

Settlement of PTP Options with Refund

Determinants

DAOPTRDA o, (j, k) = OPTDRPR (j, k) * Min (OPTR o, (j, k), OPTRACT o, (j, k))

OPTDRPR (j, k) = (Max (0, DAWASF j, c –

DAWASF k, c) * DASP c * DRF c)

c = A constraint

j = Source Settlement Point

k = Sink Settlement Point

Day-Ahead Option with

Refund Derated Amount

Option Deration Price

Day-Ahead Weighted

Average Shift Factor

Day-Ahead Shadow Price

Deration Factor

∑ c

Option with Refund Actual

Usage

Option with Refund Quantity

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Slide 151

Hedge Value for PTP Option with Refund

Settlement of PTP Options with Refund

Determinants

Day-Ahead Settlement Point

Price

Day-Ahead Option with

Refund Hedge Value

Day-Ahead Option Hedge

Value Price

DAOPTHVPR (j, k) = Max (0, DASPP k –

MINRESPR j)

DAOPTRHVo, (j, k) = DAOPTHVPR(j, k) * Min (OPTR o, (j, k), OPTRACT o, (j, k))

Minimum Resource Price Source j Sink k

Resource

Node

Load Zone

Option with Refund Actual

Usage

Option with Refund Quantity

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Slide 152

Shortfall Charge for CRRs Settled in Day-Ahead

Charge to CRR AHs when there are

insufficient funds to settle CRRs in

the DAM

Outcome

#1

What: Charge to CRR Account Holders based on a Credit

Share Ratio

Why:

Congestion Rent collected in the DAM may not be

adequate to pay the amount due to CRR Owners in

the DAM

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Slide 153

Payment due to CRR

Account Holders

(Target Payment)

Shortfall Charge for CRRs Settled in Day-Ahead

Target Payment of CRRs Settled in the Day-Ahead

Occurs hourly

• Charges for Cleared

DAM Energy Bids

• Charges for Cleared

DAM PTP Obligation

Bids • Revenue for Cleared

DAM Energy Offers

from RMR Units

• Payments for Cleared

DAM Energy Offers

• Payments for Cleared

DAM PTP Obligation

Bids

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Slide 154

Payment due to CRR

Account Holders

(Target Payment)

( ) CRR Owner

Target

Payment

Total CRR

Target Payments

for hour /

Shortfall Charge for CRRs Settled in Day-Ahead

Trigger

#1

Outcome

#1

• Insufficient funds collected

to pay CRR Account

Holders

* ( ) Total CRR

Shortfall

Day-Ahead

Shortfall Charge =

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Slide 155

Shortfall Charge for CRRs Settled in Day-Ahead - Activity

Hour Ending 1300

Total CRR Target Payment $20 Million

Congestion Rent Collected $19 Million

CRR Shortfall for the hour $1 Million

CRR Owner’s Target Payment $2 Million

CRR Owner’s Credit Ratio Share 0.1

CRR Owner’s Shortfall Charge $100,000

?

?

?

( ) CRR Owner

Target

Payment

Total CRR

Target Payments

for hour / * ( ) Total CRR

Shortfall

Day-Ahead

Shortfall Charge =

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Slide 156

Day-Ahead CRR Shortfall Amount

Determinants

Day-Ahead CRR Short

Amount

CRR Credit Ratio Share

Day-Ahead

DACRRSAMTo = DACRRSAMTTOT * CRRCRRSDAo

Shortfall Charge for CRRs Settled in Day-Ahead

DACRRSAMTTOT = (-1) * Min (0, (DACONGRENT

+ DACRRCRTOT + DACRRCHTOT))

Day-Ahead CRR Short

Amount Total

Payment due to CRR Account Holders

(Target Payment)

o = CRR Owner

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Slide 157

Shortfall Charge for CRRs Settled in Day-Ahead

Day-Ahead Congestion Rent

DACONGRENT = DAESAMTTOT + DAEPAMTTOT + RMRDAEREVTOT

+ DARTOBLAMTTOT + DARTOBLLOAMTTOT

DACONGRENT

DAESAMTTOT Day-Ahead Energy Sale Amount Total

DAEPAMTTOT Day-Ahead Energy Purchase Amount

Total

RMRDAEREVTOT RMR Day-Ahead Energy Revenue

Total

DARTOBLAMTTOT Day-Ahead Real-Time Obligation

Amount Total

DARTOBLLOAMTTOT Day-Ahead Real-Time Obligation with

Links to an Option Amount Total

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Slide 158

Shortfall Charge for CRRs Settled in Day-Ahead

DACRRCHTOT

DAOBLCHTOT Day-Ahead Obligation

Charge Total

DAOBLRCHTOT

Day-Ahead Obligation

with Refund Charge

Total

Payment due to CRR Account Holders

(Target Payment)

Charges + Payments

DACRRCHTOT + DACRRCRTOT

DACRRCRTOT

DAOBLCRTOT Day-Ahead Obligation Credit Total

DAOBLRCRTOT Day-Ahead Obligation with Refund

Credit Total

DAOPTAMTTOT Day-Ahead Option Amount Total

DAOPTRAMTTOT Day-Ahead Option with Refund

Amount Total

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Slide 159

Day-Ahead CRR Shortfall Amount

Determinants

Day-Ahead CRR Short

Amount

CRR Credit Ratio Share

Day-Ahead

DACRRSAMTo = DACRRSAMTTOT * CRRCRRSDAo

Shortfall Charge for CRRs Settled in Day-Ahead

CRRCRRSDAo = Target Payment per CRR Owner

Total CRR Payments for hour

Day-Ahead CRR Short

Amount Total

o = CRR Owner

( )

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Slide 160

Shortfall Charge for CRRs Settled in Day-Ahead

Total CRR Payments

DACRRCRTOT Day-Ahead CRR

Credit Total

CRR Credit Ratio Share (Day-Ahead)

Target Payment per CRR Owner

DAOBLCROTOT Day-Ahead Obligation Credit Total

DAOBLRCROTOT Day-Ahead Obligation with

Refund Credit Total

DAOPTAMTOTOT Day-Ahead Option Amount Total

DAOPTRAMTOTOT Day-Ahead Option with Refund

Amount Total

CRRCRRSDAo = Target Payment per CRR Owner

Total CRR Payments for hour ( )

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Slide 161

Module Summary

$ Describe the Day-Ahead Market

and its related settlements.

$ Identify the actions that impact Day-

Ahead Market Settlements.

$ Calculate various charges and

payments associated with buying

and selling products in the Day-

Ahead Market

Day 1

Course Introduction

Congestion Revenue

Day-Ahead Market

Rights