Maryland

Potomac Electric Power electricity rates & savings

Understand your bill, compare rate plans, optimize EV charging, and model solar savings for Potomac Electric Power customers. Gleam helps Potomac Electric Power (Pepco Maryland) customers in Montgomery County and Maryland suburbs find off-peak charging windows, analyze bills, and optimize solar and battery usage.

Current rate plans

Plan	Type	Good for
Standard / flat rate	Standard	Homes with steady usage across the day
Residential Plug-In Vehicle Charging (Schedule R-PIV)	Time-of-use (TOU)	EV owners who can charge overnight or on weekends

Published electricity rates

Rate tier	Price (est.)
Standard flat rate (est.)	$0.13–$0.18/kWh
On-peak / peak (TOU or EV plan)	$0.20–$0.28/kWh
Off-peak / super off-peak	$0.10–$0.14/kWh
Solar export credit (net metering)	$0.13/kWh (retail)

Rates last verified: July 2026. Effective February 2026.

Official sources: Residential rates, Tariff sheet, EV program, and Net metering.

Peak & off-peak hours

Peak · 12pm–8pm weekdays

Off-peak · All other hours (nights, mornings, weekends/holidays)

Illustrative timeline — exact windows vary by season and rate schedule.

Is the TOU or EV plan worth it?

If you drive 700+ miles/month and can charge overnight or on weekends, Potomac Electric Power's time-varying rate often saves money — peak rates can run 2.8× off-peak. If most of your usage happens during peak hours (often late afternoon), TOU may cost more than a flat plan.

Calculate charging, usage, and solar economics

Use rates published for Potomac Electric Power to estimate home electricity use, EV charging, solar savings, or solar payback with rate inflation and EV impact.

Electricity usage →EV grid charging →Solar payback →Home solar savings →

Solar & net metering

Potomac Electric Power uses retail net metering with export credits around $0.13/kWh.

Example EV charging savings

Typical EV: 11,000 miles/year (3,143 kWh)

Scenario	Est. annual cost
Charge during peak ($0.28/kWh)	$880/yr
Charge off-peak ($0.10/kWh)	$314/yr
Estimated savings (off-peak vs peak)	$566/yr

Assumes 11,000 mi/yr, 3.5 mi/kWh, and 100% of EV charging at each rate tier. Real savings depend on your driving, charger, and schedule.

Utility notes

R-PIV applies to whole-home usage via smart meter for customers with a qualifying plug-in vehicle (30+ mile electric range). All-in rates vary with SOS generation season and distribution/transmission riders — stored values are blended estimates. Confirm current cents on Pepco MD tariff pages before relying on exact savings.

Frequently asked questions

What are Potomac Electric Power's off-peak hours?

All hours outside 12pm–8pm weekdays

When are peak electricity rates in Maryland?

12pm–8pm weekdays

Can I switch Potomac Electric Power rate plans anytime?

Most utilities let you change rate plans, but some TOU or EV schedules require enrollment, smart meters, or a minimum commitment. Confirm on your utility's website.

Is Potomac Electric Power's time-of-use plan worth it for EV charging?

Personalize this for your home

If you're a Potomac Electric Power customer, add your provider in Gleam, link your EV, and upload your bill. Gleam finds off-peak charging windows, rate plan savings, and solar opportunities based on your actual usage.

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Gleam is an independent service and is not affiliated with, endorsed by, or sponsored by Potomac Electric Power or any other utility company. Potomac Electric Power is used descriptively to identify the service territory only. Rate information is for reference — always confirm current tariffs on your utility's official website before making billing decisions.