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Friday, March 27, 2015
Hawaii Electric Car Charging Costs More Than Gasoline for 33 MPG Car
By News Release @ 3:37 PM :: 6041 Views :: Energy, Cost of Living

The Hawaiian Electric Companies launch online EV Bill Savings Estimator

News Release from Hawaiian Electric

HONOLULU, March 26, 2015 - Residential customers who have or are considering an electric vehicle now have a new tool to estimate how much money they can save by using special time-of-use (TOU) EV charging rates offered by the Hawaiian Electric Companies.

The new EV Bill Savings Estimators and instructions are accessible at:

“Plug-in electric vehicles are key to a clean energy future for Hawaii,” said Jim Alberts, Hawaiian Electric senior vice president for customer service. “EVs can help reduce our dependency on imported oil, reduce greenhouse gas emissions, and save customers money in the process.”  (Uh ... except for the fact that the vast majority of Hawaii's electricity comes from ... uh ... burning oil.)

There are estimator versions for:

1) a customer enrolled in the current TOU EV rate;

2) a customer enrolled in the standard (non-TOU) residential rate, called Schedule R; or

3) a customer enrolled in the standard (non-TOU) residential rate with a rooftop solar system under a Net Energy Metering agreement.

With a recent electric bill in hand, anyone can input data to discover the amount of savings from using the TOU EV rate. The calculation is illustrative, based on individual factors such as actual household electricity use.

Under the TOU EV rate schedule, the cost per kilowatt-hour for home charging varies depending on the time of day. For example, the Oahu TOU EV rate provides a discount of about 6 cents per kilowatt-hour for electricity consumed during off-peak hours from 9 p.m. to 7 a.m. Customers can still charge vehicles at any time, but rates are somewhat higher during other hours.

A typical customer with a battery electric vehicle can save about 30 percent on fuel cost by using the standard residential rate to charge at home compared to a non-electric vehicle fueled at the gas pump.* When applying the TOU EV rate, the Bill Savings Estimator will show an additional 15 percent savings for Oahu customers charging an EV at home.

The new savings estimators are part of the Hawaiian Electric Companies’ support for electrification of transportation that includes the discount TOU charging rates and company-owned fast chargers. Learn about EVs and signing up for TOU rates for EV charging

*based on a gas-fueled vehicle that gets 25 miles per gallon.

  *   *   *   *   *


25 mpg x 1.30 = 32.5 mpg at standard residential rate

25 mpg x 1.45 = 36.25 mpg at TOU EV Rate


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