Years AfterYears After

PurchasePurchaseYears AfterYears After

PurchasePurchase

0000 5555

$20,000$20,000$20,000$20,000

$30,000$30,000 $30,000$30,000

$40,000$40,000$40,000$40,000

$50,000$50,000$50,000$50,000

Cu

mu

lati

ve C

ost

Cu

mu

lati

ve C

ost

Cu

mu

lati

ve C

ost

Cu

mu

lati

ve C

ost

LI-ION BATTERIESLI-ION BATTERIESLI-ION BATTERIESLI-ION BATTERIES

10101010 15151515

LeafLeaf

VoltVolt

PriusPrius GasolineGasolineAutoAuto

Regulation Services and Regulation Services and the Cashback Carthe Cashback CarRegulation Services and Regulation Services and the Cashback Carthe Cashback Car

$4.00/gal. $4.00/gal. $0.09¢/kWh (2009 avg)$0.09¢/kWh (2009 avg)Maintenance costs and rebate not Maintenance costs and rebate not appliedapplied

$4.00/gal. $4.00/gal. $0.09¢/kWh (2009 avg)$0.09¢/kWh (2009 avg)Maintenance costs and rebate not Maintenance costs and rebate not appliedapplied

Payment to owners of cashback vehicles average $2,400 annually

Payment to owners of cashback vehicles average $2,400 annually

•PJM Study- a PJM Study- a 3% Reduction in 3% Reduction in Demand of Top Demand of Top 20 5hr Blocks in 20 5hr Blocks in 5 Mid-Atlantic 5 Mid-Atlantic States Could States Could Save $280 Save $280 Million annuallyMillion annually

•Brattle Group- Brattle Group- a 5% Reduction a 5% Reduction in Grid Peak in Grid Peak Load (757 GW) Load (757 GW) Can Result in $3 Can Result in $3 Billion Savings Billion Savings Annually, for PV Annually, for PV Over 20 Yrs of Over 20 Yrs of $31 Billion$31 Billion

Grid Benefits of Demand Grid Benefits of Demand ResponseResponseGrid Benefits of Demand Grid Benefits of Demand ResponseResponse

2

BillingBack OfficeCustomer

Bills

Dominion Substation E-Grid

DatabaseElectrical GISBased Control

B

G

System & RegionalOperations Center

B GL

G

G

G

DistStorage

GGG

Regional Transmission

Operator (RTO)

AMI

AMI

AMI

AMI

AMIUtility Defined

Microgrid

AMIHome Microgrid

Military, Commercial, Industrial Microgrid

Dominion MicroGrid Vision

Dominion MicroGrid Vision

The Hunt for Transmission and

Distribution Losses

The Hunt for Transmission and

Distribution Losses 2010 Electric System Loss ∼ 10.3% Includes Transmission, Distribution and “Behind the Meter”

Transmission Loss ~1.5%

Transmission to Distribution Loss

~0.9%

Secondary Loss ~1.6%

Distribution to Secondary Loss

~0.8%

High & Low Voltage

Distribution Loss ~0.5%

Behind the Meter ~5%

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