GIA Tariff Changes
27
GIA Tariff Changes GIA Billing Workshop May 24, 2005 For Discussion and Informational Purposes Only
description
For Discussion and Informational Purposes Only. GIA Tariff Changes. GIA Billing Workshop May 24, 2005. For Discussion and Informational Purposes Only. Section I -- GIA Bills. Non-Block Accounting (Linear). For Discussion and Informational Purposes Only. - PowerPoint PPT Presentation
Transcript of GIA Tariff Changes
GIA Tariff Changes
GIA Billing WorkshopMay 24, 2005
For Discussion and Informational Purposes Only
Section I -- GIA Bills
For Discussion and Informational Purposes Only
3
Non-Block Accounting (Linear)
Replaces block accounting used in previous tariffs
Follows the minute-to-minute profile of all schedules
Minimizes imbalance energy due to ramps
For Discussion and Informational Purposes Only
4
Old Block Accounting Tag(240 MW Tag, 10 Minute Ramps)
For Discussion and Informational Purposes Only
5
New Linear Accounting Tag(240 MW Tag, 10 Minute Ramps)
For Discussion and Informational Purposes Only
6
Energy Allocation on Tag
For Discussion and Informational Purposes Only
7
GIA Schedule Integration Calculation Formula
((Max-Lowest Beginning or Ending MWH) * Segment Time/60*.5)
+ (Lowest Beginning or Ending MWH * Segment Time/60)
For Discussion and Informational Purposes Only
8
Minute Interval
07:55
07:56
07:5707:58
07:59
08:00
08:01
08:02
08:03
08:04
08:05
08:06
“
“08:55
08:56
08:57
08:58
08:59
09:00
09:01
09:02
09:03
09:04
09:05
Linear
Calculation
0
24
4872
96
120
144
168
192
216
240
240
240
240
240
216
192
168
144
120
96
72
48
24
0
Integrated
Calculation
0
0.2
0.61
1.4
1.8
2.2
2.6
3
3.4
3.8
4
4
4
4
3.8
3.4
3
2.6
2.2
1.8
1.4
1
0.6
0.2
Energy Allocation
5.000
230.000
5.000
Hour Ending
HE 8
HE 9
HE 10
GIA Linear Schedule Calculation 240 MWh ScheduleHour Ending 09:00
Example for 07:57
((48-24)*1/60*.5)+(24*1/60) = 0.6
For Discussion and Informational Purposes Only
9
ABCGIA Hourly Imbalance Report
03/02/2005 (Non-QF)
HR
Test
Sched.
in kwh
SUSD
Sched.
in kwh
Comm.
Sched.
in kwh
Total
Output
in kwh
Comm.
Def.
@ 110%
ESIC
TSUSD
@ 90%
AC
TSUSD
Excess
@ 50%
AC
Comm
Excess
<=120%
@ 90%
AC
Comm
Excess
>120%
<=150
@ 75%
AC
Comm.
Excess
>150%
@ 50%
AC
Notice
Event
System
Event
Def.
Energy
Price
$/kwh
Excess
Energy
Price
$/kwh
Def..
Energy
$ Charge
Comm.
Excess
Energy
$ Credit
TSUSD
$ Credit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8,063
15,812
73,125
6,250
0
0
0
0
0
0
0
0
0
0
0
0
0
3,250
25,000
20,750
0
0
0
0
0
6,250
257,291
673,400
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
680,425
250,000
4,375
0
0
0
0
11,500
24,650
334,515
679,650
810,000
812,500
812,650
830,780
850,600
846,000
844,800
839,650
836,480
828,040
818,375
813,410
807,350
653,675
279,000
21,125
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
30,000
0
4,000
0
0
0
0
8,063
15,812
73,125
6,250
0
0
0
0
0
0
0
0
0
0
0
0
0
3,250
25,000
20,750
0
0
0
0
3,437
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2,588
4,099
0
10,000
12,500
12,650
30,780
50,600
46,000
44,800
39,650
36,480
28,040
18,375
13,410
7,350
0
4,000
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
None
None
None
None
None
Yes
Yes
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.058500
0.055071
0.048152
0.000000
0.000000
0.000000
0.000000
0.040000
0.040000
0.049927
0.024557
0.013784
0.014823
0.014258
0.014634
0.014756
0.014780
0.015173
0.024000
0.014701
0.014822
0.048509
0.014833
0.015239
0.049831
0.040000
0.040000
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1,930.50
0.00
211.87
0.00
0.00
0.00
0.00
0.00
(93.17)
(184.19)
0.00
(124.06)
(166.76)
(162.33)
(405.40)
(671.99)
(611.90)
(611.78)
(856.44)
(482.67)
(374.05)
(802.22)
(179.02)
(100.81)
0.00
(144.00)
0.00
0.00
0.00
0.00
0.00
(359.01)
(569.23)
(3,285.82)
(138.14)
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
(145.76)
(900.00)
(747.00)
For Discussion & Informational Purposes Only
10
Summary of Other GIA Changes
Old GIA Deficient Energy – charged @ 110%
ESIC (Average heat rates) Comm. Excess – paid @ 90% AC Test – paid @ 90% AC of approved
amount (Excess above approved not paid)
Startup/Shutdown – paid @ 90% AC for all energy produced
All Schedules = 15 min. liability for Deficient Energy during Notice Events
AC = Avoided CostESIC = Entergy System Incremental CostTSUSD = Testing, Startup and Shutdown Periods
Revised GIA Deficient Energy – charged @ 110% ESIC (Incremental heat rates) Comm. Excess <=120% of schedule paid @ 90% AC Comm. Excess >120% and <=150% of schedule paid @ 75%
AC Comm. Excess >150% of schedule paid @ 50% AC TSUSD Energy – paid @ 90% AC of approved amount TSUSD Excess Energy – paid @ 50% AC for excess above
approved Internal Schedules = 10 min. liability for Deficient Energy
during Notice Events External Schedules = 15 min. liability for Deficient Energy
during Notice Events
For Discussion and Informational Purposes Only
Section II -- GRS Bills
For Discussion and Informational Purposes Only
12
GRS Calculation Factors Instantaneous Imbalance = Difference
Between SCADA Output & Linear Schedule Snapshots Taken at Clock-Ten-Minute Intervals
Hourly Capacity Used = Absolute maximum Instantaneous Imbalance ( + or - )
Daily Service Used = Largest Hourly Capacity Used for the day
Daily Charge = Daily Service Used x GRS Tiered Rates
For Discussion and Informational Purposes Only
13
Performance Classes
Three class structure Measures ability to stay on
schedules Classes are determined monthly at
month end based on Percentage component & number of Unit Trips declared
For Discussion and Informational Purposes Only
14
Percentage Component Calculation
Based on ten-minute snapshots Calculation = Tier 1 Snapshots / Applicable
Snapshots Tier 1 Snapshots = instantaneous
imbalances that fall within Tier 1 Applicable Snapshots = Total snapshots with
schedules or generation above 10 MW MINUS any snapshots exempted by unit trips or in hours with Testing schedules only
For Discussion and Informational Purposes Only
15
Unit Trip Component Delivering Party has the right but NOT the
obligation to declare unit trips Exempts three consecutive snapshots following
a unit trip from Percentage Component of the Performance Class calculation
Declare unit trips in writing with supporting documentation to the SOC no later than one business day after the end of the month in which the unit trip occurred
For Discussion and Informational Purposes Only
16
Component Measures
Performance Class A
Performance Class B
Performance Class C
Percentage Component > 90% < 90% > 70% < 70%
Unit Trip Declared No more than 2 No more than 4 5 or more
For Discussion and Informational Purposes Only
17
GRS Tiered Rates($ / kw-day)
Comparison of Schedule vs. Output Performance Class A Rates
Performance Class B Rates
Performance Class C Rates
Tier 1 – Lower bound – 0 MWUpper bound – the greater of 10 MW or 2.5% of the power scheduled at the time of the Snapshot.
$0.00 $0.00 $0.00
Tier 2 – Lower bound – the greater of 10 MW or 2.5% of the power scheduled at the time of the Snapshot.Upper bound – the greater of 25 MW or 20% of the power scheduled at the time of the Snapshot.
$0.008 $0.021 $0.041
Tier 3 Lower bound – the greater of 25 MW or 20% of the power scheduled at the time of the Snapshot.Upper bound – the greater of 40 MW or 40% of the power scheduled at the time of the snapshot.
$0.016 $0.041 $0.082
Tier 4 Lower bound – the greater of 40 MW or 40% of the power scheduled at the time of the Snapshot.Upper bound – none
$0.058 $0.074 $0.115
For Discussion and Informational Purposes Only
18
ABCGRS 10 Minute Snapshot Report
Snapshot
Date/Time
GRS Exemp-tion Type
Unit
Trip
Count
Test Schedule KW
SUSD
Schedule
KW
Comm.
Schedule
KW
Total
Schedule
KW
Total
Output
KW
GRS
Difference
KW
Greater of
2.5% of
Sched. or
10 MW
Tier
1
Snapshot
Applicable
GRS
Snapshot
GRS
Daily KW
Value
Set
03/02/200504:30
04:40
04:50
05:00
06:00
06:10
06:20
06:30
06:40
06:50
07:00
07:10
07:20
07:30
07:40
07:50
08:00
08:10
08:20
08:30
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5,500
11,500
18,000
29,500
5,000
0
0
0
87,500
237,580
150,000
0
0
0
0
0
0
0
0
0
0
0
0
150,000
300,000
250,000
250,000
250,000
250,000
275,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
5,500
11,500
18,000
29,500
155,000
300,000
250,000
250,000
337,500
487,580
425,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
800,000
0
13,810
19,561
29,561
257,070
332,491
356,923
368,608
438,315
502,964
475,458
788,206
783,956
779,707
778,645
776,521
804,139
795,641
889,121
915,678
(5,500)
2,310
(1,439)
(61)
102,070
32,491
106,923
118,608
100,815
(15,384)
(50,042)
11,794
16,044
20,293
21,355
23,479
(4,139)
4,359
(89,121)
(115,678)
10,000
10,000
10,000
10,000
10,000
10,000
10,000
10,000
10,000
12,189
10,625
20,000
20,000
20,000
20,000
20,000
20,000
20,000
20,000
20,000
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Yes
Yes
No
No
No
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
For Discussion and Informational Purposes Only
19
ABCGRS 10 Minute Snapshot Report
(cont.)
ABC – Performance Class Calculations
Number of Snapshots in Tier 1:Number of Applicable Snapshots:Percentage Component:Unit TripsPerformance Class
820
40%0
C
For Discussion and Informational Purposes Only
20
ABCGRS Daily Charge Report
(Non-QF)
Account: ABC
Performance Class: C
Snapshot Datetime
Unit Trip Exemption
Test Schedule
KW
SUSD Schedule
KW
Comm. Schedule
KW
Total Schedule
KW
Total Output
KW
GRS Imbalance
KW
GRS
Tier Allocation
GRS
Tier
(1,2,3,4)
GRS
Tier
Price
GRS
Daily
$ Charge
03/02/2005
06:30 0 0 0 250,000 250,000 368,608 118,608
10,000
40,000
50,000
18,608
118,608
1
2
3
4
0.000
0.041
0.082
0.115
0.00
1,640.00
4,100.00
2,139.92
$ 7,879.92
For Discussion & Informational Purposes Only
21
GRS Statistics for March 2005
March 2005 charges for all generators:
Generators in Performance Class A: Generators in Performance Class B:Generators in Performance Class C:
212K
522
For Discussion and Informational Purposes Only
22
Section III -- Bill Comparisons Bill with GRS charges and no GIA charges.
Explanation: GRS imbalance based on a 10 min snapshot. GIA imbalance based on an integrated hour.
Bill without GRS charges but with GIA charges / credits. Explanation: All the GRS imbalance falls within Tier 1 which has 00.00 rate (no charge). All GIA imbalances are subject to imbalance charge or credit.
For Discussion and Informational Purposes Only
23
AAAGRS Daily Charge Report
(QF)
Account: AAA
Performance Class: B
Snapshot Datetime
Unit Trip Exemption
Test Schedule
KW
SUSD Schedule
KW
Comm. Schedule
KW
Total Schedule
KW
Total Output
KW
GRS Imbalance
KW
GRS
Tier Allocation
GRS
Tier
(1,2,3,4)
GRS
Tier
Price
GRS
Daily
$ Charge
03/20/2005
19:30 0 0 0 50,000 50,000 38,125 (11,875)
10,000
1,875
11,875
1
2
0.000
0.021
0.00
39.37
$ 39.37
For Discussion & Informational Purposes Only
24
AAAGIA Hourly Imbalance Report
03/20/2005 (QF)
HR
Test
Sched.
in kwh
SUSD
Sched.
in kwh
Comm.
Sched.
in kwh
Total
Output
in kwh
Comm.
Def.
@ 110%
ESIC
TSUSD
@ 90%
AC
TSUSD
Excess
@ 50%
AC
Comm
Excess
<=120%
@ 90%
AC
Comm
Excess
>120%
<=150
@ 75%
AC
Comm.
Excess
>150%
@
50%
AC
Notice
Event
System
Event
Def.
Energy
Price
$/kwh
Excess
Energy
Price
$/kwh
Def..
Energy
$ Charge
Comm.
Excess
Energy
$ Credit
TSUSD
$ Credit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
TOTAL
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
437
20,563
21,000
21,000
21,000
21,000
21,000
21,000
20,979
20,021
20,000
20,000
50,000
21,333
417
0
0
76,788
69,986
65,536
60,406
59,403
63,010
66,400
68,555
68,111
68,663
61,139
57,057
56,150
51,206
51,445
60,006
65,071
41,154
48,350
51,644
45,750
42,550
44,968
41,066
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.0000000.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.0000000.000000
0.000000
0.000000
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
$0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
$0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
$0.00
For Discussion and Informational Purposes Only
25
AAAGRS Daily Charge Report
(QF)
Account: AAA
Performance Class: B
Snapshot Datetime
Unit Trip Exemption
Test Schedule
KW
SUSD Schedule
KW
Comm. Schedule
KW
Total Schedule
KW
Total Output
KW
GRS Imbalance
KW
GRS
Tier Allocation
GRS
Tier
(1,2,3,4)
GRS
Tier
Price
GRS
Daily
$ Charge
03/28/2005
15:50 0 0 0 420,000 420,000 413,824 (6,176) 6,176 1 0.000 $ 0.00
For Discussion and Informational Purposes Only
26
AAAGIA Hourly Imbalance Report
03/28/2005 (QF)
HR
Test
Sched.
in kwh
SUSD
Sched.
in kwh
Comm.
Sched.
in kwh
Total
Output
in kwh
Comm.
Def.
@ 110%
ESIC
TSUSD
@ 90%
AC
TSUSD
Excess
@ 50%
AC
Comm
Excess
<=120%
@ 90%
AC
Comm
Excess
>120%
<=150
@ 75%
AC
Comm.
Excess
>150%
@
50%
AC
Notice
Event
System
Event
Def.
Energy
Price
$/kwh
Excess
Energy
Price
$/kwh
Def..
Energy
$ Charge
Comm.
Excess
Energy
$ Credit
TSUSD
$ Credit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
TOTAL
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
327,833
350,000
350,000
350,000
350,000
350,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
420,000
350,000
325.208
329,500
352,625
355,750
354,560
352,480
360,080
421,600
421,650
422,480
422,560
422,560
422,585
422,605
422,610
422,480
418,560
420,040
420,980
421,205
421,500
421,600
421,650
362,500
341,580
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1,440
0
0
0
0
0
0
0
0
1,440
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.057540
0.000000
0.000000
0.000000
0.000000
0.0000000.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.0000000.000000
0.000000
0.000000
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
91.15
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
$91.15
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
$0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
$0.00
For Discussion and Informational Purposes Only
27
For Discussion and Informational Purposes Only
Questions?
