Electric VehiclesElectric Vehicles

Utility PerspectiveUtility PerspectiveModesto Irrigation DistrictModesto Irrigation District

Timing is EverythingTiming is Everything

Typical Utility Pad Mount Typical Utility Pad Mount TransformerTransformer

Potential Impacts to Electric Potential Impacts to Electric Distribution SystemDistribution System

Typical 240 volt Typical 240 volt charging station charging station could nearly double could nearly double the electrical the electrical demand of the demand of the average homeaverage home

Mitigation for New EV Charging Mitigation for New EV Charging LoadsLoads

Invest in expensive infrastructure Invest in expensive infrastructure upgradesupgrades

Optimize existing infrastructure Optimize existing infrastructure with Smart Grid technologies and with Smart Grid technologies and pricing signalspricing signals

ARRA Smart Grid GrantARRA Smart Grid Grant

MID has received a $1.5 million Smart MID has received a $1.5 million Smart Grid grant from the department of Grid grant from the department of energy (1 of 100 utilities nationwide)energy (1 of 100 utilities nationwide)

MID was one of the first California MID was one of the first California utilities to have full deployment of utilities to have full deployment of “Smart” meters“Smart” meters

Some Benefits of Smart Grid and Some Benefits of Smart Grid and Advance Metering InfrastructureAdvance Metering Infrastructure Monitor System StatusMonitor System Status Pricing Signals – TOU Rates, Real Time Pricing Signals – TOU Rates, Real Time

PricingPricing Interruptible Options – delay charging, Interruptible Options – delay charging,

threshold threshold

Solar PV Customer RebatesSolar PV Customer Rebates

MID has a solar PV MID has a solar PV incentives to incentives to customers that EV customers that EV owners can leverageowners can leverage

Nearly 11 Nearly 11 megawatts of Solar megawatts of Solar PV interconnected PV interconnected to dateto date

What is being consideredWhat is being considered

Time of use residential ratesTime of use residential rates Time of use residential rates for EV Time of use residential rates for EV

owners with an even lower off-peak owners with an even lower off-peak priceprice

Smart Grid interface with Smart Smart Grid interface with Smart Charging technologiesCharging technologies

Any Questions?Any Questions?