The rapid expansion of artificial intelligence technology has driven a surge in energy demand, prompting technology companies to seek solutions to power new data centres that often require vast amounts of electricity. However, the traditional energy sector faces challenges in meeting this demand swiftly, as constructing large-scale power plants, solar farms, and battery storage facilities typically takes years.

To address this gap, three companies—Tesla Inc., Sunrun Inc., and Renew Home—have announced a collaborative effort aimed at leveraging distributed energy resources in millions of American homes to supply additional power capacity. Tesla, known for its electric vehicles and battery technology; Sunrun, the nation’s largest installer of rooftop solar panels and residential batteries; and Renew Home, a Google spinoff managing smart thermostats and other connected devices, plan to use software to coordinate home-based energy assets. Their approach involves directing home batteries to charge during periods of high solar generation and discharge later when electricity demand peaks, particularly in the evening.

The partnership intends to create sufficient electrical capacity to meet the needs of 17 large data centres during peak demand times. According to Mary Powell, CEO of Sunrun and a former utility executive, this method could circumvent the traditionally lengthy process of building new utility-scale infrastructure. "We’re sitting on top of solutions right now," Powell said, highlighting the potential of existing residential devices to ease grid strain.

Utilities often have enough capacity to serve new data centres under normal conditions but face constraints during extreme weather events or peak periods. Expanding grid capacity conventionally entails costly and time-consuming projects, such as new power plants or transmission lines, with expenses frequently passed down to consumers via higher electricity bills. The three companies argue that integrating home energy systems as a distributed “virtual power plant” can reduce or delay such investments.

The initiative includes adjusting thousands of residential thermostats by small margins and managing devices like water heaters to optimize energy consumption patterns. While some states, such as California, have implemented similar programs, scaling efforts nationwide will require cooperation from utilities, grid operators, and state regulators.

Energy policy expert Leah Stokes of the University of California, Santa Barbara, called the plan a “paradigm shift” in electricity system management, emphasizing the value of harnessing smart devices to bolster the grid. She noted that California’s program has already delivered capacity on par with a nuclear power plant, managing to support significant energy loads.

Renew Home CEO Ben Brown highlighted the scale of the project, citing the company’s network of eight million devices across six million homes, which could quickly ramp up capacity. The companies also emphasize the financial incentives for participating households, who receive payments or credits on their electricity bills in exchange for allowing their devices to be managed as part of the virtual power plant. In 2025, Sunrun and Renew Home paid $67 million to customers contributing to grid support.

Last June, during a period of high electricity demand, Sunrun activated roughly half of the capacity from its 130,000 enrolled rooftop solar and battery systems across multiple states and territories, including California, New York, and Puerto Rico, to assist local grids.

The approach may also mitigate some of the opposition faced by large data centres and new utility projects, as some regions have imposed bans or severe restrictions on data centre construction and associated infrastructure due to concerns about energy consumption and environmental impact. Data centres can consume as much electricity as a midsize city, and demand is expected to grow significantly as the U.S. competes with China to lead in artificial intelligence development.

Recently, a federal energy regulator introduced guidelines intended to expedite data centre connections to the grid, contingent on their ability to reduce electricity use during peak periods. These guidelines also aim to improve transparency around grid investment costs to protect consumers from rising bills.

The partnership between Tesla, Sunrun, and Renew Home represents a significant experiment in utilizing distributed residential energy resources to meet the evolving demands of a technology-driven economy while addressing grid reliability and cost challenges.