Google is turning to demand-response programs to cover the power needs of its artificial intelligence data centers during peak hours, lining up 1 gigawatt of flexible capacity with five US utilities and scaling a virtual power plant partnership with Voltus tenfold.

Demand response is a long-standing tool of grid management, one in which large electricity users are called on to reduce or shift consumption when supplies run tight. Under these arrangements, Google's facilities can dial down or reschedule work whenever the electrical grid gets stretched thin. The strategy comes as AI workloads drive electricity demand sharply higher, leaving utilities to connect very large new loads faster than they can build the generation and transmission required to serve them. Demand response offers a way to squeeze more use out of the grid that already exists. For Google, that means shifting or curtailing certain machine-learning workloads when electricity is scarce.

What Google Has Signed

By March 19, 2026, Google had integrated a total of 1 gigawatt (GW) of demand-response capacity. That capacity comes through long-term contracts with five US utilities: Entergy Arkansas, Minnesota Power, DTE Energy, Indiana Michigan Power, and the Tennessee Valley Authority (TVA).

A bigger move followed. On October 22, 2026, Google announced a tenfold expansion of its partnership with Voltus, growing the agreement from an initial 100 megawatts (MW) to approximately 1 GW of aggregated distributed capacity aimed at the PJM Interconnection region, the largest regional transmission organization in the United States, coordinating the grid across all or parts of 13 states and the District of Columbia. The Voltus contract runs through 2040 and will add 1,070 MW of virtual power plant capacity.

Virtual Power Plants, Explained

A virtual power plant has no smokestacks or turbines. It is a network of many small energy resources, managed together so they behave like one large power plant. In Google's programs, those resources come from residential, commercial, and industrial participants, and technologies such as batteries and smart thermostats let them trim their consumption on cue.

Google's stated goals for the programs stack up neatly. They are meant to improve grid reliability and help new large loads connect more quickly, while also lowering dependence on building fresh generation or transmission infrastructure.

How Google Got Here

Google's first demonstrations of demand-response capabilities started in 2024 with the Omaha Public Power District. Agreements with additional utilities followed in 2025, including Indiana Michigan Power and TVA. By early 2026, the patchwork had grown into the 1 GW portfolio spread across five utilities, and the Voltus expansion later that year pushed the strategy into PJM territory with a much larger footprint.

Regulatory Pushback in Michigan

Not everyone is applauding, though. The Michigan Attorney General has filed a petition challenging aspects of Google's data center contracts with DTE Energy. The filing points to ongoing regulatory scrutiny of these arrangements and of what they could mean for costs borne by ordinary consumers.

The petition serves as a reminder that utility contracts with big tech firms are not purely private deals. When a utility signs special terms with a data center operator, regulators and consumer advocates want to know who ultimately pays.

What to Watch Next

Attention now turns to how the Michigan challenge to the DTE Energy contracts plays out, whether the Voltus capacity in PJM comes online as planned, and whether Google adds more utilities to its roster.