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BRIEFING ON ENERGY IMPROVEMENT DISTRICT MICROGRIDS

Presentation to:US Congressional Staff

May 10, 2010

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Pareto Energys Definition of Microgrid

() (

)

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UNDERSTANDINGOFSTAMFORDENERG

The UBS 103,000 Sq. Ft. Trading Floor Largest in the World

USERS

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Connecticut Generators Use Indonesian Coal

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Coal is Shipped 12,000 Nautical Miles to Bridgeport

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HOW

TH

ECURRENTGRID

DELIVERSENER

30-40% of Coal Use Results in Power60-70% of Coal Use Results in Green House Gas Emissions

Y

TOSTAMFORD

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HOW

TH

ECURRENTGRID

DELIVERSENER

Power to Norwalk Via 345 KV Overhead (5-7% line loss)

Y

TOSTAMFORD

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HOW

TH

ECURRENTGRID

DELIVERSENER

New England T&D System Exposed to Winter Storms

Y

TOSTAMFORD

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HOW

TH

ECURRENTGRID

DELIVERSENER

New England T&D System Exposed to Summer Storms

Y

TOSTAMFORD

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HOW

TH

ECURRENTGRID

DELIVERSENER

Power To Customer Via 13 KV Lines

Y

TOSTAMFORD

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HOW

TH

ECURRENTGRID

DELIVERSENER

Distribution Also Exposed to Weather Outages

Y

TOSTAMFORD

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HOW

TH

ECURRENTGRID

DELIVERSENER

Distribution Failures Due to Short Circuits Have Occurred

Y

TOSTAMFORD

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HOW

TH

ECURRENTGRID

DELIVERSENER

The Grid Serves Critical Infrastructure

Y

TOSTAMFORD

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THEMIC

ROGRIDSOLUTION

STEPBYSTEP

Microgrid Step 1: Locate Power at or Near Its Point of Use

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THEMIC

ROGRIDSOLUTION

STEPBYSTEP

Microgrid Step 2: Combined Heat and Power

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THEMIC

ROGRIDSOLUTION

STEPBYSTEP

Microgrid Step 5: Develop Architecture and Governance

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THEMICROGRIDSOLUTIONSTEPBYST

Microgrid Step 3: Overcome the Grid Interconnection ProblemThe Post-Microgrid Distribution System

P

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MICROGRID

COST-BENEFIT

Comparative Cost of Power in StamfordFor a Customer with Diesel Backup Versus a CHP Microgrid

Costs Grid Only EID

Grid Power + DieselBackup $0.21 $0.23

- vo e eseback-ups $0.21 $0.21

- Trigeneration $0.21 $0.16

- State and FederalIncentives $0.21 $0.13

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MICROGRIDENVIRONME

NTALIMPACT

Comparative Emissions in StamfordFor a Customer with Diesel Backup Versus a CHP Microgrid

NOx

EID Emissions Reduction

CO2

SO2

0 500,000 1,000,000 1,500,000 2,000,000

t

Without EID

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CONSID

ERINGMICROGRID

SINTHENATION

S

CAPITAL

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CONSIDERINGMICROGRIDSINTHENATIONSCAPIT

L

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