What Google Actually Bought
On 6 October 2026 Google and Constellation Energy announced a deal that Reuters sizes at 3,590 megawatts in PJM Interconnection, the largest US grid, which serves about 67 million people. The headline number joins two different contracts, and only one of them adds power to the grid.
| Piece | Term | Capacity | What it does |
|---|---|---|---|
| Nuclear uprates | 20 years | 890 MW | New output at 11 units in Illinois, Pennsylvania and New Jersey |
| Energy supply | 15 years | 2,700 MW | Keeps existing Constellation plants economic |
| Total | - | 3,590 MW | About 25 percent is new capacity |
Uprates mean upgrading turbines, steam generators and digital control systems at plants that already run. The companies say that adds capacity without the multi-year timelines or interconnection bottlenecks of new construction, with the first uprate expected by 2028 and more than $4.3 billion of Constellation investment.
The 2,700 MW part is a 15-year energy supply agreement that, in the companies' words, keeps operating assets economically viable without taking resources off the grid. The International Business Times adds that it is not tied to a specific generation source. It is a revenue guarantee for existing plants, not new supply.
Why PJM Rules Shaped The Structure
The companies say the agreement answers PJM's "Bring Your Own Power" proposal. The International Business Times reports that in January the PJM Board of Managers outlined a framework under which large-load customers can bring new generation with them or face greater curtailment risk when the grid is tight.
The deal also includes load-shaping and demand-response measures that let Google cut non-critical power use during grid stress. The release ties the agreement to the White House Ratepayer Protection Pledge and says Google will add capacity without passing costs to residential customers.
So the structure is the message: a data centre buyer pays for new megawatts and offers to flex its own demand, instead of joining the queue for existing power. The sources describe a commercial agreement and mention no regulatory decision on it.
Not Only A Google Story
The deal arrives days after Constellation's 20-year agreement with Amazon, which adds 190 MW and extends the life of Calvert Cliffs in Maryland, World Nuclear News reports. On 2 October Oracle committed to subscribe to output from the Point Beach plant in Wisconsin and said it would absorb about $300 million in rising energy costs.
Outside the US the pattern looks similar. The same report notes that Google signed a long-term deal with Finland's Fortum covering up to 50 percent of the Loviisa plant's capacity, which underpins uprates and lifetime extensions until 2050.
In each case the buyer funds or guarantees capacity at plants that already exist, which is faster than building new. The open question for everyone else is how much firm power is left to contract once the largest buyers have done the same.
What Other Operators Should Do
If you run a data centre, a colocation site or an energy-intensive plant in PJM territory, assume the rules will keep rewarding load that arrives with its own supply and can be curtailed. Ask your utility or landlord which curtailment terms apply to your site.
Price your flexibility. A contract that lets you cut non-critical load in a grid emergency, as Google's does, is now a bargaining asset rather than a cost. Also check the term of every supply contract, since the Google pieces run 20 and 15 years.
Outside the US, read the Fortum deal as proof that long-term, uprate-backed supply contracts are not only an American structure, and follow your own grid operator's large-load rules, which may differ from PJM's.
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