DETROIT – Electricity rates will depend on time of day, and year, for DTE customers starting in March. The news came in mailers sent to customers this month to notify them of the upcoming change.

The time-of-day rate will charge customers nearly 35 percent more during peak times in the summer, to meet high demand for air conditioners and other appliances. Peak hours are weekdays from 3 to 7 p.m.

EV owners typically recharge their vehicles in off-peak hours, saving them money.

From October to May the rate will be $0.16 per kilowatt hour and $0.20 per kilowatt hour from June to September.

However the off-peak rate of $0.15. per kilowatt hour will be lower than the current, average customer rate for 20 hours during the week and all weekend, according to DTE.

The transition comes in response to the Michigan Public Service Commission ordering Michigan’s electric utilities to implement time-based pricing.