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Data Centers and Your Electric Bill: PJM Hit the $325 Cap Again in 2026

The grid serving much of the Mid-Atlantic and Midwest just paid top price for power capacity for a third straight auction, and its market monitor blames data centers for a big share. Here is what that means for a household bill, and the lines worth checking.

The grid operator that keeps the lights on across much of the Mid-Atlantic and Midwest has now watched its auction for standby power clear at the maximum allowed price three times in a row. PJM Interconnection said on July 14 that its newest auction “came in at the FERC-approved cap, $325/MW-day (UCAP) for the entire PJM footprint,” and once again pointed to “the addition of large data center loads” to its forecast.

So are higher electric bills data centers’ fault? The honest answer is: partly, in some places, according to the people who watch this market most closely, and not necessarily everywhere, according to the International Energy Agency. This guide walks through what the grid numbers say, and then what you can actually check on your own bill.

Where it stands: The latest consumer price report, released October 14, showed that “the electricity index rose 4.4 percent” over the 12 months ending in September, per the U.S. Bureau of Labor Statistics. That is a national average. Bills in the PJM footprint are being pushed by a specific set of costs, described below.

Three auctions, three times at the cap

PJM runs a yearly auction to line up enough power plants to cover peak demand a few years ahead. The cost of that “capacity” is spread to utilities, which pass it to customers through the supply part of the bill. For the last three delivery years, the price hit the ceiling every time.

Delivery year Clearing price (per MW-day) PJM’s note
2026/27 $329.17 At the FERC-approved cap
2027/28 $333.44 At the cap
2028/29 $325 At the cap; third auction under the price collar

PJM itself said “this was the third consecutive auction with the price collar,” the cap-and-floor arrangement that sets limits on the clearing price. When the 2026/27 result came out, the grid operator estimated the cap price could mean “a year-over-year increase of 1.5–5% in some customers’ bills, depending on how load serving entities and states pass on wholesale costs to consumers.” Note the word “some”: your utility, your state and your supply arrangement all change the result.

Are electric bills data centers’ fault? What each side says

Here is where it pays to listen carefully to who is speaking.

PJM, the grid operator, tied its demand growth to data centers directly. For the 2027/28 year, it said peak load was forecast “approximately 5,250 MW higher” and that “nearly 5,100 MW of that increase is attributable to data center demand.”

The independent market monitor, Joseph Bowring of Monitoring Analytics, goes further and puts a dollar figure on it. He told Utility Dive that across the four most recent auctions, “data center-driven capacity charges totaled $29.4 billion — 46% of the $63.6 billion in total capacity charges in that period.” That is the monitor’s estimate, not an official PJM number.

The tech companies say they intend to cover their share. Google, Meta, Microsoft and others pledged at the White House on March 4 “that they would protect consumers from price hikes due to data center energy and infrastructure requirements.” Bowring’s response, per Utility Dive: “meeting that pledge is impossible in PJM under its current rules.” The industry’s trade group, the Data Center Coalition, has said “the data center industry is committed to paying its full cost of service.”

The International Energy Agency adds a useful caution. It says that where supply is tight, “load growth can indeed trigger a need for new investments, potentially raising prices,” but that where a system has spare power, extra demand “can result in more efficient capital utilisation and lower prices.” In plain terms: a data center next to a grid with room to spare is a different story from one plugging into a grid that is already stretched.

Weather mattered this year too. The U.S. Energy Information Administration said some regions saw higher wholesale prices “mainly due to weather events, such as winter storm Fern and high summer temperatures particularly in July.”

What the forecasters expect next

The EIA’s October outlook is blunt about the PJM region: “We forecast wholesale prices in the PJM region this year will increase by 41% compared with 2025, the largest increase across all regions.” Wholesale is not the same as your retail rate, and PJM itself reminds customers that “wholesale costs make up a portion of retail electricity bills.”

For the country as a whole, the agency’s table of average residential prices reads 16.5 cents per kilowatt-hour for 2024, 17.3 for 2025, and projections of 18.2 for 2026 and 18.7 for 2027. Those are national averages; your own rate could be well above or below them.

One real example: PECO in the Philadelphia area

A concrete case helps. PECO, which serves the Philadelphia region inside PJM, said that from June a typical residential customer on its default supply using 700 kilowatt-hours would pay “$4.94 per month” more, “a 3.1% increase.” That figure applies to that utility, that usage level and that period only. It does not tell you what will happen to a bill in Ohio, Virginia or New Jersey.

PECO also showed something useful: the change applied to customers on the utility’s default supply. Households buying from a competitive supplier were on whatever price their contract set. That is why the next section starts with your bill’s supply line.

Four things to check on your own bill

You cannot change what a grid auction does. You can make sure you understand which part of your bill it touches, and confirm you are on the best arrangement you qualify for.

Check What to look for
Supply vs. delivery Which charges are “supply” or “generation” and which are delivery
Price to compare Your utility’s supply rate per kWh, if your state allows shopping
Usage history How this month compares with the same month last year
Help programs Payment plans, budget billing and state assistance

1. Find the supply line. Most bills split charges into supply (the electricity itself) and delivery (the wires that bring it to you). Capacity costs usually sit inside supply rather than on a line of their own. If supply has jumped while delivery stayed flat, wholesale costs are a likely reason.

2. Look up your price to compare. In states where you can choose a supplier, the utility publishes a default supply rate. Our guide to using the price to compare before you switch suppliers explains how to read it and what to check in a supplier contract.

3. Compare your usage, not just the dollars. Your bill likely shows usage in kilowatt-hours for the same month a year ago. If usage rose, weather or a new appliance may matter as much as rates. Our list of ways to get a discount on your electric bill before winter covers the usage side.

4. Ask about help before you fall behind. Utilities usually offer payment plans and budget billing, and states run federally funded energy assistance programs. Our explainer on shutoff protections and LIHEAP help covers who to call.

Where the next decisions get made

The delivery rates your utility charges are set by state regulators, not by PJM. When a utility asks to raise its rates, there is usually a public case where customers can comment. Our walkthrough on finding your utility’s rate case and filing a public comment shows how to find yours. On the wholesale side, the next round is already on the calendar: PJM says the auction for the 2029/30 delivery year “is scheduled for December.”

Frequently Asked Questions

Are data centers raising my electric bill?

It depends on where you live. In the PJM grid region, the independent market monitor attributes a large share of recent capacity charges to data centers, and PJM has tied most of its forecast growth to them. The International Energy Agency says load growth can lower prices where a grid has spare supply, so the PJM experience does not automatically apply everywhere.

How do I know if I am in the PJM region?

Your utility bill or your utility website usually says which regional grid it belongs to. PJM covers much of the Mid-Atlantic and parts of the Midwest. If you are unsure, call your utility and ask which grid operator and which capacity costs apply to your account.

What is a capacity charge on an electric bill?

Capacity is what a grid pays power plants to be available at peak times. In PJM, the price is set in an auction, and those wholesale costs flow into the supply portion of retail bills over time. Many bills do not show capacity as its own line; it is folded into the supply or generation charge.

Can I avoid data center costs by switching electricity suppliers?

Not reliably. Suppliers buy power in the same wholesale market, and delivery charges stay with your utility no matter who supplies you. Comparing a supplier offer against your utility price to compare can still be worth doing, as long as you read the contract terms first.

Where can I get help if my electric bill is already too high?

Start with your utility: ask about payment plans and budget billing. Then contact your state LIHEAP office or the federal National Energy Assistance Referral line for help applying for energy assistance.

Sources

This article is general consumer information, not financial advice. Rates, bills and programs vary by utility and state and change over time; check your own utility and state regulator for current figures.

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