Rate cases tied to data centers: 63 tracked in 25 states

This is new state law aimed at keeping data center power costs off your bill; the CPUC still has to write the actual tariff rules, due by January 1, 2028, so there is no bill impact yet.

This does not change your bill directly; it applies a new charge to large new data center customers starting October 2026, which TVA says protects other customers from those costs.

AES Ohio settled for a much smaller increase than it first asked for, about 2.43 dollars a month in year one instead of the original double digit request, but the Public Utilities Commission of Ohio still has to vote on it.

This is a private contract rate for a data center developer, not a residential rate, but its minimum payment terms are meant to stop those costs from being shifted onto household bills.

This is a private contract rate for a data center developer, not a residential rate, built to keep large new loads from raising costs for everyone else.

The large load rate is meant to make data centers and other big new customers cover the cost of the power plants and lines built to serve them, rather than spreading that cost across residential bills.

MLGW is a municipal utility that buys its power from TVA, so its base rates are set by Memphis City Council rather than a state commission, and large customers like xAI are billed under MLGW's own commercial and industrial rate schedules, separate from residential rates.

A May 2026 Earthjustice analysis estimated Mississippi households had already paid roughly 38 million dollars for transmission and other infrastructure connected to the AWS project as of that point, though Entergy disputes how that cost should be characterized.

This is the overall statewide trend behind the individual utility price to compare increases: the average Pennsylvania household's total electric bill grew by roughly a fifth between 2024 and 2026.

This new law is meant to stop the cost of big new electricity users like data centers from landing on ordinary residential bills, rather than raising bills directly.

The order is meant to keep new data centers from pushing their power costs onto residential electric bills by requiring developers to pay for all of their own electricity.

This is a structural change in who pays for data center grid buildout rather than a simple rate increase. The new GS-5 class and the direct-connect tariff are both designed to keep those costs on the data centers.

Xcel Energy Minnesota customers should see a one-time bill credit because they were charged more under temporary rates in 2025 than the final approved rates.

This decision is why your PGE bill went slightly down in mid 2026; it shifted data center costs off residential rates.

A typical PPL residential customer's total monthly bill was set to rise by a few dollars once the new distribution rates took effect July 1, 2026, on top of separate increases in the supply portion of the bill.

If you do not shop for a competitive electricity supplier, the default generation portion of your DC Pepco bill went up about 9.56 dollars a month starting July 2026 because of higher regional power auction prices.

This approved contract is designed to have Amazon's data centers pay their own way, with savings passed to other NIPSCO customers as bill credits rather than costs.

Capacity costs baked into the summer supply price are the main channel through which data center growth is already raising Ameren Illinois electric bills.

If you buy your generation supply from your utility instead of a competitive supplier, this raised the supply portion of a typical FirstEnergy PA household's bill by roughly 3 to 12 dollars a month depending on which of the four utilities serves you.

A PECO household that buys its generation supply from PECO rather than a competitive shopper saw its supply charge rise by about 5 percent starting with its June 2026 bill.

This is a smaller increase than 2025's BGS jump, but it stacks on top of it for JCP&L default-supply customers.

PSE&G default supply customers got a small decrease in mid-2026, unlike JCP&L customers in the same auction.

Meta says the contract means other Alliant customers will not pay for the energy used by its Beaver Dam data center, though consumer advocates say the secrecy around the deal makes that hard for the public to independently verify.

This does not change anyone's electric rate directly, but it is meant to stop the cost of new substations and power lines built for data centers from being added to everyone else's bill.

This tariff does not change home electric rates by itself, but it is meant to make large new data centers pay the full cost of the power plants and lines built to serve them instead of spreading those costs across everyone's bill.

This case does not change what a household pays today, but it is the main tool Illinois regulators are using to try to stop the cost of new grid equipment for data centers from landing on residential bills.

The December 2025 certification of about 9,885 MW of new generation for data center load came with a promise of at least $8.50 a month of downward pressure on a typical bill in 2029 through 2031, because large customers are meant to carry more of the cost. Consumer groups warned it could instead add around $20 a month if the projected data center demand does not show up.

The order is meant to keep this one data center's power costs off the bills of regular DTE residential customers, but critics argue the fast, largely ex parte approval process did not fully test that promise.

Your Alabama Power rate factors are frozen through 2027, but a 3.32 dollar a month charge for the Lindsay Hill gas plant is still coming, now delayed to 2028.

This is a service contract, not a residential rate change. The protections in it exist to keep the cost of serving the data center from shifting onto Tucson homes; whether they hold is the thing to watch in TEP's future rate cases.

If the commission approves the settlement as negotiated, a typical 1,000 kWh residential bill would rise about 6.53 dollars a month once new rates take effect; the case is not yet decided.

A North Carolina Utilities Commission ruling on this case is due by September 20, 2026; if it does not rule in time, Duke's full 18.1 percent original request takes effect instead of the smaller settlement figure.

This does not change a typical home bill by itself, but it sets the rules meant to stop the cost of new data center power hookups from being spread across every Consumers Energy customer's rate.

This case does not set rates directly, but the new solar plant it approves will eventually be paid for through customer rates, and MidAmerican has said data center growth is a major reason it is needed.

Watch for how the Louisiana Public Service Commission enforces cost sharing if Meta's actual power use ever falls short of what was promised, since that is what determines whether these plants ever show up on a typical household bill.

This is a minimum bill requirement for very large new customers, not a rate change for homes, but it exists specifically to keep data center grid costs off residential bills.

Data center growth on Entergy Mississippi's system is being credited with keeping your bill roughly flat instead of rising, according to the company; Mississippi bills remain about 20 percent below the national average.

This applies statewide in the ERCOT region, not just Oncor territory. It does not change a bill directly; it decides whether data center grid costs land on developers or on the delivery rates everyone pays.

This is the single biggest reason ComEd bills jumped in summer 2025 and again in 2026, and PJM and consumer groups both tie it directly to data center demand growth.

This is a default electric supply price increase from the statewide auction, not a JCP&L delivery rate case; shopping for a competitive supplier avoids it.

If you buy default electric supply through PSE&G rather than a third-party supplier, this auction result is why your total bill jumped in mid-2025; it is a supply cost, not a PSE&G delivery rate increase.

This deal is meant to keep the cost of new substations and transmission lines for AWS's data centers off the bills of regular I&M customers by making the data center pay for capacity it reserves, not just power it actually uses.

Since February 2025, new loads of 100 MW or more must sign custom contracts of up to 15 years with financial guarantees and minimum bills, which is the rule meant to keep data center grid costs off residential rates.

This does not change anyone's electric bill by itself; it is a state sales tax break for data center owners, separate from the MPSC cases that set how those same data centers pay for electricity. It applies statewide, regardless of which utility serves the site.