Residential Apartments-Master Meter-Schedule MMA
When does peak hit on Potomac Electric Power Co’s Residential Apartments-Master Meter-Schedule MMA? The hour never matters here — only the season. Rates peak November–May.
- off-peak7.33¢
Weekends are off-peak all day — the cheapest time to run anything you can schedule.
What does Residential Apartments-Master Meter-Schedule MMA cost a year?
| Household | Uses | Per year | Works out to |
|---|---|---|---|
| Apartment One or two people, no central air, no electric heat | 4,866 kWh | $893 | 18.3¢ / kWh |
| Family home Three or four people with central air conditioning | 9,453 kWh | $1,743 | 18.4¢ / kWh |
| Home with an EV Same house, plus an electric car charging overnight | 13,103 kWh | $2,425 | 18.5¢ / 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 |
|---|---|---|
| off-peak | 7.33¢ up to 30 kWh18.14¢ | midnight–midnight, June–October |
| off-peak | 7.33¢ up to 30 kWh19.10¢ | midnight–midnight, November–May |
Plus a fixed charge of $2.01 per month.
Should you be on Residential Apartments-Master Meter-Schedule MMA?
The hour of day does not change what you pay here — the month does. Running the same house through the full year, July costs about $198 and February about $113. That $86 swing is part rate and part weather, and it is the reason a budget built on your spring bill will break in July.
There is a usage cliff to watch. The first 30 kWh each month are billed at 7.3¢; past that line the rate steps up to 19.1¢ — 160% more for every unit after. The last kilowatt-hour of a heavy month is the expensive one, which is why cutting a little off a big month saves more than cutting the same amount off a small one.
Before a single kilowatt-hour moves, this plan charges $24 a year in fixed fees. On the apartment above that is 3% of the whole bill; on the house with a car charging in it, 1%. 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.
If this is new to you
- What is a baseline allowance? Tiered electricity rates explained
A cheap allowance, then a cliff. Where the cliff sits is the whole game.
- 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.
- Why is my electric bill so high in summer?
Usually three causes at once, and only one of them is your air conditioner.
- How to compare electricity plans without getting it wrong
Six things that break a comparison, and the order to check them in.
Where this comes from
- Effective
- 2025-08-01
the date this tariff took effect
- Covers
- delivery + supply
Generation + Transmission + Distribution + Procurement Cost Adjustment
- Enrollment
- open to new customers