Electric Bills Rise in Massachusetts Today. The Biggest Power Buyers Aren't on the Hook.

At midnight Saturday, three New England utilities quietly reset a number most of their customers will never notice. National Grid's fixed-price electricity supply rate in Massachusetts jumped from 15.372 cents to 17.185 cents per kilowatt-hour, an 11.8 percent increase; its variable option rose from 15.546 to 16.074 cents. Eversource and Unitil moved on the same day, the same way they do every August and February.

Here is the twist: most Massachusetts households will not feel it. State data shows just 26.6 percent of electric customers statewide were still on this "basic service" rate as of March, the only group directly exposed to Saturday's hike. About 51 percent have already moved to municipal aggregation, where a city or town negotiates its own supply contract and shops the rest of the market for a better deal.

Read it this way: that split is a small, dated preview of a much bigger sorting now underway in American electricity. The customers with leverage, capital, or scale keep finding ways to opt out of the price the grid charges everyone else. The customers without it get whatever the reset says. Saturday's rate case is not really about Massachusetts. It is about who still has to wait in line for power, and who no longer does.

Zoom out from New England and the same pattern shows up at a scale that makes a percentage point on a utility bill look almost quaint. The International Energy Agency's Electricity 2026 report finds that more than 2,500 gigawatts of renewable, large-load, and storage projects are currently stalled in grid interconnection queues worldwide, and warns that annual grid investment needs to rise roughly 50 percent by 2030, from about $400 billion today, just to keep pace. A lack of grid capacity, the agency says, is becoming a defining bottleneck, with queues at record levels almost everywhere.

The companies that can afford not to wait in that queue are doing exactly that. Meta signed deals in January with Oklo, Vistra, and TerraPower for up to 6.6 gigawatts of nuclear power by 2035, aimed squarely at its Prometheus AI data center campus in New Albany, Ohio, and its broader footprint inside the PJM grid region. Oklo says pre-construction on its 1.2 gigawatt Ohio power campus starts this year, with a first phase targeted for 2030. None of that power waits behind households for a spot on the shared system; it is purpose-built, contracted, and financed directly by the buyer.

The financing behind that shift is getting help from Washington, too. The Department of Energy loaned Constellation $1 billion in November to support restarting nuclear capacity, and in June announced a $17.5 billion "American Nuclear Supply Chain" loan program meant to accelerate ten large-scale reactors, exactly the kind of patient, capital-intensive bet that a shared, regulated grid struggles to make on a data center's timeline. Meanwhile BloombergNEF puts 2026 capital spending among the 14 largest data center operators at close to $750 billion, up from roughly $450 billion last year, with 23 gigawatts of capacity now under construction, about three-quarters of it in the United States. That is money moving fast, toward power that answers to one customer instead of a rate case.

Put the Massachusetts rate case next to the Ohio power campus and the shape of the thing comes into focus. It is not that AI is draining the grid dry, and it is not, today, a story about capital chasing energy in the abstract. It is a story about exit. The biggest power buyers in the country are increasingly building or contracting their own generation, on their own schedule, backed by their own capex and federal loan guarantees, while the shared grid, the one still governed by rate cases and queues, keeps serving whoever is left behind on it.

The grid is not shrinking for anyone. It is splitting into two lanes: one bankrolled by hyperscaler capex and federal loan guarantees, built to a 2030 or 2034 date the customer picked, and a second lane still queued behind everyone else, funded a rate case at a time. Massachusetts households just found out which lane they are in.

Watch whether that gap widens or narrows this fall, when more state utilities file their own rate cases, and when the Department of Energy's loan program starts putting dollars behind actual concrete at Oklo's Pike County site. The first turbines there are not due until 2030. The next basic-service bill is due in February.

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