Pepco Standard Offer Service: DC's Default Rate Explained

Every month, a Washington DC renter opens a Pepco bill, sees the total, and pays it. Few scroll past the delivery charges to find the line that reads "Supply" or "Generation." That line reflects what they are paying for the electricity itself, separate from the cost of moving it through the wires.

For most DC households, that supply charge comes from Pepco's Standard Offer Service, the default supply option that kicks in automatically when no competitive supplier has been chosen. Understanding what SOS is, how its rate is set, and when (or whether) it makes sense to leave it is the starting point for managing what you actually pay for power.

Standard Offer Service is the default electricity supply arrangement for Pepco customers in Washington DC. When the District deregulated its electricity market, it gave residents and small businesses the right to choose their own electricity supplier. For anyone who doesn't make that choice, the utility provides supply through SOS.

Pepco itself does not generate the power behind SOS. Instead, the company procures it through a competitive wholesale process overseen by the DC Public Service Commission (DCPSC). The results of those procurement auctions determine the SOS rate that appears on customer bills. The DCPSC reviews and approves the rate, which means it isn't simply a number Pepco sets on its own.

It helps to think of SOS as a government-supervised fallback. It is not a punishment for inaction, nor is it inherently a bad deal. It simply exists so that no customer is ever left without a supply rate while they consider their options.

The DCPSC is Washington DC's independent utility regulator. Its job is to ensure that electricity and natural gas services are safe, reliable, and reasonably priced for District residents. When it comes to SOS, the commission approves the wholesale procurement process that Pepco uses to source power, then reviews the resulting rates before they go into effect.

Pepco typically procures SOS supply in tranches, meaning multiple auctions are spread across time rather than one big annual purchase. That approach is meant to reduce exposure to price spikes at any single moment in the wholesale market. The blended result of those tranches becomes the SOS rate customers see.

Because the process is tied to wholesale energy markets, the SOS rate changes periodically. Historically it has moved both up and down depending on regional grid conditions, natural gas prices (which heavily influence power prices in the PJM grid that serves DC), and seasonal demand. Customers who want to track official rate filings can review dockets directly on the DCPSC website.

As of June 2026, Pepco's Standard Offer Service supply rate is approximately 16.1 cents per kilowatt-hour (kWh). That figure covers only the supply (generation) portion of the bill. Delivery charges, which include transmission, distribution infrastructure, and various DC-specific riders, are separate and apply regardless of which supplier a customer uses.

For context, a typical DC apartment using around 700 kWh per month would pay roughly $113 in supply charges under SOS before delivery costs are added. Actual totals vary by usage and by the specific riders and taxes on a given bill.

For the most current rate, always check ElectricRates.org's Washington DC page or the DCPSC directly, since rates can change between billing periods.

Washington DC's deregulated market allows licensed third-party suppliers to compete for residential and commercial electricity customers. In theory, competition should push supply prices below the SOS rate. In practice, that isn't always what happens.

As of June 2026, the lowest competitive supply offer available in the DC market is approximately 17.6 cents per kWh, which is actually higher than the 16.1-cent SOS rate. That means switching to a competitive supplier right now would cost most DC customers more on the supply portion of their bill, not less.

This doesn't mean competitive suppliers are never useful. Some offer fixed-rate contracts that hedge against future SOS rate increases. Others bundle renewable energy certificates for customers who want their supply matched to green sources. But anyone shopping purely for the lowest price should compare carefully before signing anything. Visit ElectricRates.org's DC rate comparison tool to see live offers side by side with the current SOS rate.

The SOS rate is not static. Over the years, DC customers have seen it climb during periods of tight natural gas supply or high regional demand, and fall when wholesale power markets loosened. The COVID-era drop in electricity consumption, for example, coincided with softer wholesale prices that were reflected in SOS rates during that window.

More recently, inflationary pressure on fuel costs pushed SOS rates higher across many mid-Atlantic states. The 16.1-cent figure current as of June 2026 reflects that broader environment. Customers who locked into a fixed-rate supplier contract a few years ago at a lower price may have done well. Those who signed contracts at peak prices may have overpaid compared to SOS.

The lesson most energy analysts draw from that history is straightforward: the SOS rate serves as a useful benchmark. Any competitive offer should be measured against it at the time of signing, not against what the market looked like 18 months earlier.

One point that confuses many DC residents is what actually changes when they switch suppliers. The answer: only the supply portion of the bill. Pepco continues to deliver electricity through its wires, respond to outages, and handle billing for the vast majority of customers regardless of which supplier is chosen. Most competitive suppliers in DC use consolidated billing, meaning customers still receive one Pepco bill with the supplier's charges appearing as a separate line.

This means that if a tree falls on a power line during a storm, the call still goes to Pepco. Service reliability does not depend on who sells the electrons. For customers worried that switching means dealing with a new company for everything, that concern is generally unfounded.

Supply rate comparisons matter most to customers who are already paying their full bill without assistance. For households facing hardship, Washington DC offers several programs that can reduce electricity costs more significantly than any rate switch.

The DC Department of Energy and Environment (DOEE) administers energy assistance programs including Weatherization Assistance and coordinates with federal Low Income Home Energy Assistance Program (LIHEAP) funding. Pepco also offers its own customer assistance programs for qualifying low-income households. Eligibility thresholds and benefit levels change, so current details are best confirmed directly with DOEE or through Pepco's customer service.

For households already enrolled in assistance programs, switching to a competitive supplier can sometimes complicate billing arrangements, so it is worth checking with the program administrator before making a change.

Pepco's Standard Offer Service is a well-regulated, competitively procured default that, as of June 2026, is actually cheaper than any competing retail supplier offer in the DC market. That is not always the case, and it won't necessarily remain true as wholesale conditions shift.

The smartest move for any DC resident is to check current offers periodically rather than assuming either that SOS is always best or that switching always saves money. Both assumptions have been wrong at various points in recent history.

For a current side-by-side look at SOS versus live competitive offers, the Washington DC rate comparison page at ElectricRates.org pulls rate data updated daily so customers can make the comparison without any guesswork.