Quick Answer
- Google signed a 20-year agreement with Constellation Energy on October 6, 2026.
- The total package is 3,590 megawatts (MW): 890 MW of new nuclear capacity plus 2,700 MW of energy supply under a separate 15-year agreement.
- The 890 MW comes from upgrading 11 existing nuclear units in Illinois, Pennsylvania and New Jersey. No new reactor is being built.
- Constellation says it will invest about $4.3 billion in the upgrades. The first one is expected by 2028.
- Price terms were not disclosed in the sources we checked.
What did Google and Constellation announce?
Google and Constellation Energy announced a long-term power deal. Google agreed to a 20-year power purchase agreement. In return, Constellation will upgrade existing nuclear plants so they produce more electricity. The extra power goes to the PJM grid, which serves about 67 million people in the eastern US.
There is also a second part. Google gets 2,700 MW of energy supply through a 15-year agreement, and the two companies set up a 5-year technology alliance with Google Cloud.
Add the first two together and you get the 3,590 MW number in headlines.
What do 890 MW and 3,590 MW actually mean?
A megawatt is a unit of power. One simple comparison: 890 MW is roughly the output of one new nuclear reactor, as one report put it.
| Part of the deal | Size | Term |
|---|---|---|
| New nuclear capacity (uprates) | 890 MW | 20 years |
| Additional energy supply | 2,700 MW | 15 years |
| Total | 3,590 MW |
So only about a quarter of the package is brand new nuclear capacity. The rest is power supply from other sources.
What is a nuclear uprate?
An uprate means making an existing reactor produce more power by upgrading equipment. It does not mean building a new plant. It is faster and cheaper than a new reactor, which can take many years and billions of dollars.
Under this deal, Constellation will upgrade 11 nuclear units across the three states, paid for with the revenue from Google’s contract. The first uprate is expected by 2028, and reports say the new capacity arrives between 2028 and 2032.
Why is Google doing this?
Big tech companies need a lot of electricity for data centers and AI. Google says it wants clean, steady power that runs day and night, and the deal also gives it tools to adjust demand when the grid is stressed. Amanda Peterson Corio of Google said the agreement to fund reactor uprates will strengthen the PJM grid.
Constellation’s CEO Joe Dominguez called it a model for how technology and energy companies can work together.
Is this the first big tech nuclear deal?
No. Other tech companies have signed similar deals. According to Axios, Amazon signed a comparable Constellation deal in Maryland last week, Meta has agreements across three states, and Microsoft buys power from the Three Mile Island restart in Pennsylvania.
The trend is clear: AI needs more power, and nuclear is a popular answer. For more on how fast AI is growing, see our report on OpenAI DevDay and the always-on Dots agents.
What does it mean for jobs?
The companies say the plan will support about 4,400 existing jobs and create about 7,200 construction jobs during the build period.
Will it change my electricity bill?
The sources do not say. Google’s side mentions alignment with the White House Ratepayer Protection Pledge, but no bill impact was given. We will update if details appear.
FAQ
How big is the Google Constellation deal?
3,590 MW in total: 890 MW of new nuclear capacity and 2,700 MW of energy supply.
How long does the agreement last?
20 years for the nuclear power purchase agreement and 15 years for the 2,700 MW energy supply.
Is Google building a new nuclear plant?
No. Constellation will upgrade 11 existing units in Illinois, Pennsylvania and New Jersey.
How much will Constellation spend?
About $4.3 billion on the upgrades, according to the announcement.
When will the new capacity be ready?
The first uprate is expected by 2028, and capacity arrives between 2028 and 2032 per Axios.
Why do tech companies want nuclear power?
They need large amounts of steady, low-carbon electricity for data centers and AI, and nuclear runs around the clock.
