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# Inside Google and Constellation’s 3.59 GW Power Deal
- URL: https://atomicinsider.com/article/inside-google-and-constellations-3-59-gw-power-deal/
- Published: 2026-11-04T08:55:53.000Z
- Updated: 2026-11-04T08:55:53.000Z
- Description: Google has agreed to purchase 890 MW of additional nuclear output and 2,700 MW of electricity from Constellation’s existing portfolio. The agreements combine long-term electricity purchases with investment in additional nuclear generating capacity.
- Author: Oleg
- Tags: Deal Anatomy

## Key dates

- **6 October 2026** — Google and Constellation announce the agreements.
- **By 2028** — First reactor uprate expected to enter service.
- **By end-2032** — Target completion of all 890 MW of nuclear uprates.

## What’s the deal?

Google and Constellation Energy announced two long-term electricity agreements on 6 October 2026, covering a combined 3,590 MW in the PJM electricity market. A 20-year power purchase agreement (PPA) covers 890 MW of additional output from upgrades at 11 existing nuclear reactors. A separate 15-year agreement covers 2,700 MW from Constellation’s existing generation portfolio. Constellation plans to invest more than $4.3 billion in the upgrades, supported by the revenue certainty of Google’s long-term purchasing commitment.

## The terms

The 20-year PPA covers 890 MW of additional nuclear capacity through upgrades at six sites in Illinois, Pennsylvania and New Jersey. Constellation plans to modernise equipment at 11 operating reactors, with the first uprate expected by 2028 and the full programme completed by the end of 2032.

The separate 15-year agreement covers 2,700 MW from Constellation’s existing PJM fleet without adding new capacity. Contract prices, the allocation of electricity across generating plants and the extent of Google’s demand-flexibility commitment have not been disclosed.

## Who’s involved?

Google is the long-term electricity buyer, providing contractual revenue certainty that supports Constellation’s planned investment while meeting its growing power requirements.

Constellation owns the nuclear reactors and is responsible for financing and executing the upgrades, as well as supplying the contracted electricity.

PJM operates the regional wholesale electricity market and coordinates transmission but is not a party to the agreements. The 2,700 MW supply arrangement draws on Constellation’s broader generation portfolio and should not be interpreted as exclusively nuclear.

## What’s next?

Constellation must complete engineering, equipment procurement and installation across six nuclear sites, together with the necessary regulatory and grid processes. The first uprate is expected by 2028, with the remaining capacity expected before the end of 2032.

Google has also committed to reducing non-critical electricity consumption during periods of grid stress. However, the companies have not disclosed the volume subject to curtailment or how this commitment applies across the agreements. Delivery of the additional 890 MW remains dependent on completing the upgrades.

## Why it matters

The agreement illustrates how long-term corporate electricity purchases can support investment in existing nuclear infrastructure. Constellation plans to add 890 MW of generating capacity through reactor upgrades, potentially faster than constructing new plants. The separate 2,700 MW agreement supports existing generation rather than creating additional capacity. Google provides long-term revenue certainty, while Constellation undertakes the capital investment, demonstrating how long-term commercial contracts can underpin nuclear expansion without a direct customer capital contribution.