Google, Constellation Add 890 MW Nuclear Capacity to PJM

Google and Constellation Energy have signed a 20-year power purchase agreement that will support 890 MW of new nuclear capacity across 11 Constellation-owned units in Illinois, Pennsylvania and New Jersey. The agreement is expected to unlock more than $4.3 billion in investment, sustain around 4,400 existing jobs and create approximately 7,200 construction jobs. The companies have also agreed a separate 15-year energy supply deal covering 2,700 MW of existing generation across the PJM market.

 

Nuclear Uprates Offer a Faster Route to New Firm Power

 

The 890 MW will come from uprating existing nuclear plants rather than building a new reactor. Constellation plans to upgrade equipment including turbines, steam generators and digital control systems to increase the efficiency and output of operating units, with the first uprate expected by 2028.

That approach gives Google a route to support new firm generation without waiting for a greenfield nuclear project to move through permitting, construction and grid interconnection. The additional capacity is roughly equivalent to the output of a large conventional reactor and will remain available to the wider PJM grid rather than being dedicated to one site.

 

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Google Is Linking Load Growth With New Supply

 

The agreement comes as electricity demand rises from AI infrastructure, manufacturing and industrial electrification. Google is framing the deal as part of a broader effort to bring new power onto the system alongside its own growth, rather than adding demand without supporting additional supply.

That is also why the structure includes demand-response and load-shaping capabilities. Google will be able to reduce non-critical electricity use during periods of grid stress, while the new nuclear capacity and existing 2,700 MW supply agreement provide a larger base of firm power within PJM.

 

The 2,700 MW Agreement Supports Existing Generation

 

Alongside the new 890 MW, Google and Constellation have signed a 15-year energy supply agreement covering another 2,700 MW from Constellation’s existing fleet. The aim is to provide longer-term revenue certainty for operating assets while keeping that electricity available to the PJM market.

That makes the arrangement broader than a standard PPA. One part funds incremental capacity, while the other supports existing generation, giving Constellation a more stable commercial base across several plants as it invests in upgrades and future capacity.

 

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AI Is Being Applied to the Energy System Itself

 

Constellation has also expanded its technology relationship with Google through a five-year agreement covering Google Cloud and Gemini Enterprise. The companies plan to use AI for site selection, power flow modelling, permitting, interconnection planning, asset health monitoring, outage management and infrastructure security.

The stated aim is to shorten project timelines, improve plant performance and reduce the cost of delivering new capacity. For Constellation, the partnership also brings AI into operational areas that directly affect grid reliability, rather than using it only for back-office functions.

 

The Partnership Could Become a Model for AI-Era Power Deals

 

The agreement responds directly to growing concern about how large new electricity users should support the grids they depend on. By funding uprates, maintaining existing nuclear capacity and adding demand flexibility, Google and Constellation are trying to show how large technology companies can contribute to supply growth as their power needs increase.

The next test will be delivery. The first uprate is expected in 2028, and the value of the model will depend on whether the 890 MW of new capacity arrives on schedule and whether the AI tools improve construction, dispatch and plant performance in practice.

 

Source: Constellation Energy