Google bets $4.3B on nuclear upgrades to power data centers amid grid strain

Google has entered into a major multibillion-dollar commitment with Constellation, the nation's largest nuclear operator, to modernize existing atomic power plants across the country. The arrangement exemplifies how tech companies are turning to nuclear energy to satisfy the mounting electricity requirements of artificial intelligence and data center operations.

The Deal#

Under a 20-year power purchase agreement valued at more than $4.3 billion in new investment, Google will guarantee revenue to support efficiency upgrades and improvements at six nuclear facilities spanning Illinois, Pennsylvania, and New Jersey. The project targets 11 reactors in total and is expected to yield an additional 890 megawatts of electrical generating capacity within the next five years—roughly what a single large modern reactor or three small modular reactors might produce.

Google has also signed a separate 15-year supply contract with Constellation covering 2,700 megawatts of power from mixed sources, securing continued funding for the utility's broader fleet of plants.

Solving a Grid Crisis#

The power purchase agreement directly addresses escalating strains on the PJM Interconnection, which manages the electrical grid for 13 states and the District of Columbia and serves as the backbone for the densest concentration of data centers in the nation, particularly around Loudoun County, Virginia. PJM has faced mounting difficulty meeting surging demand from AI infrastructure buildout.

Last year, the grid's independent market monitor filed a formal complaint alleging that PJM was permitting data centers to connect without adequate assurance of reliable service, raising the specter of widespread blackouts. Federal energy regulators have since pressed PJM to revise its procurement strategy to better protect residential customers from bearing the cost of data center expansion. Electricity costs in PJM-served states have risen sharply—New Jersey experienced a 54 percent increase in rates over five years alone.

The Broader Climate Picture#

While nuclear energy offers a low-carbon alternative, Google's broader energy commitments reveal the environmental tensions of AI expansion. The company's deal with Constellation also includes support for natural gas facilities, which remains the largest fuel source in PJM's generation mix and is currently the driver of new infrastructure projects nationwide aimed at supporting data centers.

Google's own sustainability metrics underscore this paradox: the company's carbon emissions climbed 18 percent last year as electricity consumption surged 37 percent, pushing the tech giant further away from its climate targets despite investments in renewable and nuclear sources.