Contact Delmarva

Residential customer service

1-800-375-7117

Mon to Fri, 7 a.m. to 7 p.m. ET

Power outage (24/7)

1-800-898-8042

Or text OUT to 67972

Gas emergency (Delaware only)

302-454-0317

Maryland gas is served by other utilities

Payment mailing address

Delmarva Power
P.O. Box 17000
Wilmington, DE 19886-7000

Company fact sheet

Legal name
Delmarva Power & Light
Parent company
Exelon (NASDAQ: EXC)
Acquired via
Pepco Holdings merger (2016)
States served
DE, MD, VA
Total electric customers
~1.2 million
Gas customers (DE only)
~140,000
Regulator (MD)
MD PSC + FERC
Grid operator
PJM Interconnection

Quick actions

  • 1

    Start service

    Call 1-800-375-7117 at least 3 business days before move-in. Have your new address, move-in date, and SSN or ID ready.

  • 2

    Stop service

    Same line. The final bill is sent to your forwarding address.

  • 3

    Compare supply rates

    In Maryland you can keep Standard Offer Service (SOS) from Delmarva, or pick a competitive supplier. See our MD supply guide.

Compare MD suppliers

About Delmarva Power

Delmarva delivers electricity across the Delmarva Peninsula. In Maryland it covers the Eastern Shore IOU territory between Choptank Electric Cooperative (the rural co-op) and the Eastern Shore municipal towns. It is part of Exelon, the largest electric utility holding company in the US.

1.2M

Total electric customers (3 states)

~210K

Maryland electric customers

5,000+

Square miles of service territory

PJM

Wholesale grid operator

Delmarva became part of Exelon in March 2016, when Exelon completed its $6.8 billion acquisition of Pepco Holdings (the parent of Delmarva, Pepco, and Atlantic City Electric). Before that, Delmarva had been a Pepco Holdings subsidiary since 2002, and before that it was part of Conectiv. Locals sometimes still call it Conectiv or just Delmarva, but the bill says Delmarva Power.

In Maryland, Delmarva is regulated by the Maryland Public Service Commission (PSC). The PSC sets the delivery rates Delmarva is allowed to charge and runs the auction that sets Standard Offer Service, the default supply price for customers who do not shop a competitive supplier.

CallMePower explains

How your Delmarva bill is built

Every Maryland electric bill has two parts: supply (the energy itself) and delivery (the wires that bring it). Delmarva is always the delivery company. You can choose who handles supply.

Supply

The price of the kilowatt-hours (kWh) you actually use. Charged in ¢/kWh.

  • Standard Offer Service (SOS) if you do nothing. Delmarva buys the power at PSC-run auction and resells it at cost.
  • Competitive supplier if you shop one through MD's Maryland Electric Choice program.

Delivery

The cost of moving electricity through Delmarva's wires. This part cannot be shopped.

  • Customer charge: a fixed monthly fee, like a subscription.
  • Distribution: ¢/kWh wires charge.
  • Transmission, EmPOWER Maryland, universal service, and franchise tax adders.

Why this matters: A competitive supplier only changes the supply line. Delivery, customer charge, and riders stay the same. Always compare a competitive offer to the current Delmarva SOS rate, not the rate that was in effect when you signed your last contract.

Delmarva service area in Maryland

Delmarva is the electric IOU for most of Maryland's Eastern Shore, alongside Choptank Electric Cooperative (rural areas) and a handful of municipal utilities (Berlin, Easton, St. Michaels, Crisfield, Vienna, and others).

Maryland counties

Cecil, Kent, Queen Anne's, Caroline, Talbot, Dorchester, Wicomico, Somerset, Worcester. Roughly 210,000 electric meters in MD.

Excludes Choptank Electric Cooperative members and the Eastern Shore municipal towns.

Beyond Maryland

All 3 Delaware counties (electric + gas in northern DE), plus the Virginia portion of the Delmarva Peninsula (Accomack and Northampton counties).

Delaware is the only state where Delmarva delivers natural gas.

Insider tip

Maryland SOS is laddered, which dampens price spikes

Maryland's Public Service Commission stacks Standard Offer Service purchases over several quarterly auctions. The blend means that at any given moment, your Delmarva SOS rate reflects a weighted average of wholesale prices going back about 12 to 24 months.

What that means for you: After a hot summer with high PJM prices, SOS does not jump in one shot the way Basic Service does in some other states. The increase rolls in over a year. The flip side: when wholesale prices drop, SOS savings also arrive slowly. Time competitive supplier shopping for the start of each rate period (1 June and 1 October are the residential reset dates) so you can compare apples to apples.

Frequently asked questions

Does Delmarva deliver natural gas in Maryland?
No. Delmarva's gas distribution operates only in northern Delaware. In Maryland, natural gas in the Salisbury area is provided by Chesapeake Utilities, while the rest of the Eastern Shore relies on propane and oil. Western Maryland gas customers use Columbia Gas of Maryland or Washington Gas depending on county.
If I switch to a competitive supplier, does Delmarva still deliver my power?
Yes. Delmarva still owns the poles, wires, and meter. Your bill still comes from Delmarva (the supplier charge appears as a line item on the same bill). The outage line, billing inquiries, and emergency response do not change.
Can I get help paying my Delmarva bill?
Yes. Ask Delmarva about the Maryland Energy Assistance Program (MEAP) and Electric Universal Service Program (EUSP), both administered by the Maryland Department of Human Services. Federal LIHEAP funding flows through these programs.
My power is out. Who do I call?
Delmarva, always. Call 1-800-898-8042 or text OUT to 67972. Never call your competitive supplier for an outage; they do not control the wires.
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