A-TOU Residential Service - Time-of-Use
When does peak hit on Central Maine Power Co’s A-TOU Residential Service - Time-of-Use? Peak hits 5pm–9pm on weekdays, all year.
- peak50.31¢
- off-peak6.75¢
Weekends are off-peak all day — the cheapest time to run anything you can schedule.
What does A-TOU Residential Service - Time-of-Use cost a year?
| Household | Uses | Per year | Works out to |
|---|---|---|---|
| Apartment One or two people, no central air, no electric heat | 4,866 kWh | $1,061 | 21.8¢ / kWh |
| Family home Three or four people with central air conditioning | 9,453 kWh | $1,749 | 18.5¢ / kWh |
| Home with an EV Same house, plus an electric car charging overnight | 13,103 kWh | $1,995 | 15.2¢ / kWh |
Estimates, not quotes. We run three made-up but realistic households through this tariff hour by hour for a full year — including the way air conditioning loads the afternoon and an EV loads the small hours. Your own bill depends on when you actually use electricity, which is exactly the thing a per-kWh number hides.
What you actually pay
| Period | Rate | Applies when |
|---|---|---|
| peak | 50.31¢ | 5pm–9pm |
| off-peak | 6.75¢ | 9pm–5pm, midnight–midnight |
Plus a fixed charge of $26.71 per month.
Should you be on A-TOU Residential Service - Time-of-Use?
This is a time-of-use plan, which means the clock decides your bill as much as the meter does. At the worst hour you pay 50.3¢ a kWh; at the best hour, 6.7¢ — 7.5× apart for identical electricity.
That gap is worth real money only if you can move load into it. Every kilowatt-hour a day you shift from 5pm to midnight is about $159 a year. A dishwasher run is roughly 1.5 kWh; an EV commute charge is 8 to 12. If your day is fixed — you are home in the evening and the air conditioner runs when it runs — a plan like this costs you more, not less.
Before a single kilowatt-hour moves, this plan charges $321 a year in fixed fees. On the apartment above that is 30% of the whole bill; on the house with a car charging in it, 16%. Fixed charges are invisible in a cents-per-kWh comparison and they punish small users hardest — if you use very little electricity, the headline rate is the least important number on this page.
Expect the bill to move with the calendar. The same family home costs about $195 in July and $118 in February — a $77 spread driven by heating and cooling far more than by anything you chose. Budget against the July figure, not the average, and a summer bill stops being a surprise.
How it compares to Central Maine Power’s other plans
Measured against the other residential plans this utility files, a family home lands 2nd cheapest of 2. The cheapest option, A Residential Standard Offer Service, would run about $178 a year less.
Against A Residential Standard Offer Service, which looks like the plan you land on by default, this one comes out $178 more per year (11%). We infer the default from the tariff structure rather than a flag in the data, so confirm it against your own bill before you switch.
If this is new to you
- What is a time-of-use electricity rate?
The same kilowatt-hour, priced differently depending on when you use it.
- Should you switch to a time-of-use electricity plan?
A wide peak-to-off-peak gap is a lever, not a saving. Levers need something to move.
- When should you charge an electric car at home?
The single biggest load most homes can move, and the easiest to automate.
- Why is my electric bill so high in summer?
Usually three causes at once, and only one of them is your air conditioner.
Where this comes from
- Effective
- 2026-01-01
the date this tariff took effect
- Covers
- delivery + supply
우편번호 매핑에서 이 지역 서비스 종류가 Bundled — 배달과 공급을 함께 판다
- Enrollment
- open to new customers
Tariff document: https://www.cmpco.com/documents/d/cmp/atou