Data center demand could raise summer electric bills in Maryland, Virginia and Pennsylvania

Bills may rise this summer

Data center demand could make summer electric bills higher in Maryland, Virginia, and Pennsylvania because all three states are served within PJM’s regional power market. PJM capacity prices help power plants stay ready during high demand.

Reuters reported that PJM expected the July 2025 auction results to raise some bills by 1.5% to 5% beginning in summer 2026. Capacity costs are only one part of a bill. Delivery charges, fuel costs, and state rules also matter. Customers still pay different rates based on their utility, supplier plan, and monthly electricity use during the summer cooling season.

Why PJM matters

PJM coordinates wholesale power markets and grid operations across all or parts of 13 states and the District of Columbia, including Maryland, Virginia, and Pennsylvania. The capacity market pays generators to be available when demand is high. Those payments differ from the energy charge per kilowatt-hour a household uses.

Utilities and suppliers can pass approved wholesale costs into customer prices through tariffs, default service rates, or contracts. When capacity prices rise, customers may see the effect later because retail rates change on state schedules. Regulators review how each utility collects those costs from customers and businesses across the state.

The grid has summer supply

On May 7, 2026, PJM said it was prepared for expected summer demand. The grid operator forecast a peak of about 156,400 megawatts and said it had about 180,200 megawatts of generation capacity available. That statement addressed reliability, not household price levels.

A reliable grid can still bring higher bills when capacity costs rise. For families, timing matters because air conditioning increases usage during hot months. A larger bill can result from more kilowatt-hours, higher supply charges, or both. Data center demand can influence wholesale costs before those costs are reflected in retail bills for homes across the region.

Extra backup is ready

PJM said it had about 7,800 megawatts of contracted demand response for the same summer season. Demand response pays participating customers to reduce electricity use during system emergencies. That can help protect reliability when hot weather raises demand. It does not cancel capacity prices already set through market auctions.

For Maryland, Virginia, and Pennsylvania customers, this distinction matters. The region can have enough resources for the expected demand and still face higher bills. Bills depend on wholesale market costs, state-approved rates, and each customer’s use. Conservation can lower usage charges, but it cannot control every bill component during the summer months.

Virginia load is central

Virginia is central to the data center issue because Northern Virginia has the world’s largest data center cluster, according to Dominion Energy. Reuters reported that Dominion had contracted nearly 51 gigawatts of data center capacity as of March 2026. That figure showed requested or contracted future capacity, not the electricity used at any given moment.

Large campuses require continuous power for servers, cooling, and backup systems. When many projects seek service in a single region, utilities plan for more lines, substations, and generation. Those plans can affect future rates after regulators review which costs are reasonable and who should pay them over many years.

Dominion spending rose

On Feb. 23, 2026, Reuters reported that Dominion Energy raised its capital spending plan covering five years to $64.7 billion for 2026 through 2030. The company had previously planned $50.1 billion through 2029. Dominion said it was responding to rising requests for power capacity, including data centers.

Capital spending can cover generation, substations, power lines, and other grid work. Those projects are paid over many years if regulators approve cost recovery. The issue matters beyond Virginia because PJM prices are regional. The debate is how much large users, utilities, and regular customers should pay for new infrastructure in future cases.

Virginia peaks climbed

EIA reported that summer peak load in PJM’s Dominion zone reached 23,905 megawatts in 2025. That was higher than before the recent wave of data center growth. Peak load is the largest amount of electricity demanded at once, so it guides grid planning.

A single hot afternoon can force utilities to prepare enough power lines, transformers, and generation for rare stress hours. Data centers differ from many homes because they use large amounts of power at steady levels. In Virginia, that steady demand adds to air conditioning loads on peak days when summer weather pushes the grid to its limit.

Growth is forecast

EIA said PJM expects peak summer load in the Dominion zone to grow at an average annual rate of 5.4% over the next decade. The agency linked Virginia’s commercial electricity growth to data centers. Forecasts matter because utilities plan before new demand is fully connected. If forecasts are too low, reliability can suffer.

If they are too high, customers may incur unnecessary infrastructure costs. Regulators in Richmond review utility filings to judge whether planned projects are reasonable. PJM load forecasts also affect future capacity planning across regional wholesale markets that include Maryland, Virginia, and Pennsylvania during later auction cycles.

Maryland bills face pressure

Maryland customers are affected because Baltimore Gas and Electric, Pepco, Delmarva Power, and Potomac Edison operate in the PJM region. A Maryland consumer fact sheet dated June 12, 2025, listed summer electric rate information for major utilities. The document showed that supply, delivery, and special riders can change at different times.

Data center demand does not need to be inside Maryland to affect a Maryland bill, because PJM capacity costs are regional. State actions can reduce some customer costs, but approved wholesale charges still flow through bills. Customers should compare supplier terms before switching plans during the hot summer months.

Little-known fact: Summer rates are not only about power used today. Some grid markets charge for “capacity,” meaning customers help pay to ensure enough power plants are available on peak-demand days.

Pennsylvania saw increases

On June 2, 2025, the Pennsylvania Public Utility Commission said typical residential price-to-compare increases among major electric utilities ranged from 5% to 16%. The price to compare is the default generation price customers use when judging supplier offers. It does not include every delivery charge.

Pennsylvania’s large utilities buy supply through auctions and contracts tied to wholesale markets. Higher PJM capacity prices can raise the default price even when a customer’s daily habits stay the same. The commission urged customers to review bills, shop carefully, and seek assistance programs if payment became difficult during the summer or during periods of high demand.

Caps slowed the impact

On Feb. 12, 2026, Pennsylvania Gov. Josh Shapiro said PJM agreed to extend a capacity auction price cap. Reuters reported the agreement was expected to save 67 million Americans about $27 billion on energy bills. A cap limits how high auction prices can go, but it does not remove the need for power plants or grid upgrades.

The action followed legal pressure from Pennsylvania after steep market increases. Maryland and Virginia customers may also be affected, as PJM operates across state lines. The policy shows how state officials are trying to slow regional price shocks in future auction years.

Market changes are debated

On May 6, 2026, Reuters reported that PJM was considering changes to how electricity is bought and sold. The grid operator said data centers had outpaced supplies in parts of the system. PJM warned that an electricity shortfall could appear as early as 2027 if new supply did not arrive fast enough.

Proposed changes included more long-term contracts rather than relying mostly on yearly auctions. Such reforms could affect Maryland, Virginia, and Pennsylvania because all three states are in the same market.

The debate is about cost, reliability, and who pays for new regional demand as it grows, which helps explain why 13 painful truths about living in Maryland in 2026 speaks to broader concerns about affordability and infrastructure.

What households should watch

Households in the three states should watch supply prices, delivery riders, and monthly usage before summer bills arrive. A home using 1,000 kilowatt-hours pays more when either the rate per kilowatt-hour rises or the household uses more electricity.

Customers should check whether they are on a utility default plan or a competitive supplier contract. Fixed rates can protect against some changes, but contract terms matter.

Assistance rules differ by state, and utility shutoff protections have deadlines. Data center demand is one reason prices can rise, but weather, fuel, and grid costs also affect bills in different billing cycles, which is why America’s most and least expensive states for electricity matter for households comparing monthly costs.

Do you think fast-growing data center demand will make summer electric bills harder for households in Maryland, Virginia, and Pennsylvania? Share your thoughts and drop a comment.

This slideshow was made with AI assistance and human editing.

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