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Constellation Energy and Google have agreed to support $4.3 billion in equipment upgrades at 11 existing nuclear plants in the PJM region, adding a planned 890 megawatts of generating capacity. The first project is expected to be completed by 2028, with the full group of uprates due in the early 2030s; exact project schedules and the deal’s financial terms have not been disclosed.
Constellation Energy and Google have agreed to a 20-year partnership supporting equipment upgrades at 11 existing nuclear plants in the PJM electricity region, with Constellation estimating the work will add 890 megawatts of generating capacity. The plan, which Constellation says will cost more than $4.3 billion, is intended to expand nuclear output without building new reactors.
The upgrades, known as power uprates, involve replacing or improving equipment such as turbines, steam generators and digital control systems. Constellation says the changes will allow its plants to produce more electricity using their existing reactor infrastructure. The company described the projects as varying from plant to plant; the source report did not specify the full scope of work at each site.
Constellation spokesperson Paul Adams told Canary Media that one project will add 348 MW to the 2,317-MW Limerick plant near Philadelphia. The 2,327-MW Salem plant in southern New Jersey is set for a 97-MW increase. Constellation expects to finish the first Google-backed uprate by 2028 and complete the group in the early 2030s.
Constellation puts the initiative’s total budget above $4.3 billion, or slightly more than $4,800 per kilowatt of additional capacity. The report did not provide the contract’s electricity pricing, the allocation of costs between the companies, or a plant-by-plant timetable. Google is the buyer under the long-term power arrangement, but details of the purchase terms were not included.
More Capacity for PJM’s Tight Grid
The planned capacity would serve the PJM Interconnection, which operates the largest U.S. wholesale electricity market and faces growing demand. PJM spans 13 states and the District of Columbia. The grid operator’s spokesperson, Jeff Shields, said the region needs additional supply to meet demand, support reliability and ease upward pressure on prices.
The projects could provide more power from plants that already operate, but the announcement does not establish how much they will lower electricity bills or when consumers might see an effect. Their contribution also depends on regulators approving the uprates and the upgrades being completed as scheduled. The long-term Google agreement offers a revenue commitment for the added output, a structure also used in clean-energy deals for wind and solar.
For the region’s power supply, the approach pairs existing nuclear generation with other potential sources of new capacity. Evan Vaughan, executive director of renewables trade group MAREC Action, told Canary Media that long-term revenue agreements can support generation across technologies. He also said new solar, wind and storage remain important, particularly as siting and permitting make new large power plants challenging.
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A Faster Route Than New Reactors
A power uprate increases a plant’s rated output through equipment and systems changes rather than construction of a new reactor. The report describes these projects as generally faster and less costly than building a reactor, although Constellation’s stated cost of more than $4.3 billion makes this a major capital program. The company’s estimate is above the reported per-kilowatt cost of utility-scale solar paired with storage, a new combined-cycle gas plant and Constellation’s separate effort to restart the undamaged reactor at the former Three Mile Island site.
The announcement follows other corporate-backed nuclear capacity plans. Constellation and Meta previously announced a smaller uprate project adding 30 MW, while Georgia Power and Google agreed to support 96 MW of uprates at two Georgia plants. Separately, the Department of Energy announced a $4.2 billion loan for three Vistra-owned nuclear plants in Pennsylvania and Ohio, including support for 433 MW of previously announced uprates with Meta as the electricity buyer.
Canary Media reported that the federal administration has set a goal of adding 5 gigawatts of carbon-free nuclear capacity by 2029 without deploying a new reactor. Uprates can contribute to that objective, but Constellation’s full program is scheduled to extend into the early 2030s, beyond the stated target year.
Project Costs and Terms Still Missing
The announcement does not identify the electricity price in the Google agreement, how its costs are divided, or the exact schedule and upgrade details for each of the 11 plants. Constellation has named Limerick and Salem and provided capacity figures for those projects, but has not provided a complete site-by-site breakdown in the material reported by Canary Media.
The projected 890 MW is planned additional generating capacity, not a statement that all upgrades have been completed or that the full amount is already available to the grid. The timing depends on project execution and the required regulatory approvals. The source report does not give a complete account of those approvals or their status. The effect on regional power prices and the contribution to Google’s electricity demand also remain unspecified.
First Upgrade Targeted for 2028
Constellation says it expects the first uprate to be completed by 2028, followed by the remaining projects through the early 2030s. The next details to watch are the identification and schedules of the other plant upgrades, regulatory steps, and any further information from the companies about the deal’s power-purchase and financing terms.
The projects will also be measured against broader additions to the PJM system, including the Vistra uprates backed by a federal loan and Meta agreement, as well as new renewable and storage development. No later milestones or revised completion dates were provided in the source report.
Key Questions
What did Constellation and Google announce?
They announced a 20-year partnership supporting equipment upgrades at 11 Constellation nuclear plants in the PJM region. Constellation estimates the work will add 890 MW of generating capacity.
What is a nuclear power uprate?
An uprate raises a plant’s generating capacity by upgrading equipment and systems, rather than constructing a new reactor. Constellation cited turbines, steam generators and digital control systems as examples of equipment that may be improved.
When will the added capacity be available?
Constellation expects the first project to be completed by 2028 and the full group of uprates in the early 2030s. The announcement does not provide precise dates for every plant.
How much will the program cost?
Constellation says the initiative will cost more than $4.3 billion, or slightly over $4,800 per kilowatt of planned added capacity. The announcement did not disclose Google’s contribution or the full financial terms.
Will the deal lower electricity prices?
That is not established by the announcement. PJM said more supply could support reliability and ease upward price pressure, but no projected bill savings or price impact from this specific program was provided.
Source: rss
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