This document discusses electric vehicles from the perspective of a utility and some of the impacts and opportunities that electric vehicles present. It notes that widespread electric vehicle adoption could nearly double the electrical demand of the average home. However, utilities can mitigate increased loads through infrastructure upgrades and smart grid technologies that allow for optimized and flexible charging. The utility discussed has received a smart grid grant and deployed smart meters, and is considering time-of-use rates and smart charging integration to help manage electric vehicle loads.

1. Electric Vehicles
Utility Perspective
Modesto Irrigation District

2. Timing is Everything

4. Typical Utility Pad Mount
Transformer

5. Potential Impacts to Electric
Distribution System
 Typical 240 volt
charging station
could nearly double
the electrical
demand of the
average home

6. Mitigation for New EV Charging
Loads
 Invest in expensive infrastructure
upgrades
 Optimize existing infrastructure
with Smart Grid technologies and
pricing signals

7. ARRA Smart Grid Grant
 MID has received a $1.5 million Smart
Grid grant from the department of
energy (1 of 100 utilities nationwide)
 MID was one of the first California
utilities to have full deployment of
“Smart” meters

8. Some Benefits of Smart Grid and
Advance Metering Infrastructure
 Monitor System Status
 Pricing Signals – TOU Rates, Real Time
Pricing
 Interruptible Options – delay charging,
threshold

9. Solar PV Customer Rebates
 MID has a solar PV
incentives to
customers that EV
owners can leverage
 Nearly 11
megawatts of Solar
PV interconnected
to date

10. What is being considered
 Time of use residential rates
 Time of use residential rates for EV
owners with an even lower off-peak
price
 Smart Grid interface with Smart
Charging technologies

11. Any Questions?