The answer to Arizona data center power demands could be on your roof
A new report by Rewiring America proposes that data center companies fund residential upgrades like rooftop solar and home batteries to free up grid capacity, addressing growing energy demands and community opposition. This distributed energy model aims to bring more renewables online and alleviate fears of soaring energy bills and pollution from increased fossil fuel generation in Arizona and nationwide. Experts acknowledge the potential benefits for the climate and households, but raise concerns about the practicality and speed of scaling such a program to meet the unique energy needs of data centers.
A new report from the nonprofit Rewiring America suggests a novel approach to address the escalating energy demands of data centers, particularly in states like Arizona. Instead of data centers building their own power generation or straining already-squeezed utilities, the report proposes they fund residential electrification through rapid deployment of rooftop solar, home batteries, and efficiency upgrades in low-income households. This strategy aims to free up grid space, bring more renewables online, and potentially mitigate community opposition, which is a growing concern across the country.
According to Ari Matusiak, cofounder and CEO of Rewiring America, this model allows data centers to essentially get their power from households, redirecting billions of dollars that tech companies like SpaceX might otherwise spend on on-site fossil fuel generation. The report argues this could be a faster way for data centers to secure energy, while also benefiting households with energy savings and providing utilities with grid stability and reduced investment in new power plants and transmission infrastructure.
However, experts like Gary Dirks, a senior director at the Global Futures Laboratory at Arizona State University, acknowledge the worthiness of the approach but caution that it won't be simple or fast, primarily due to the logistical challenges of coordinating thousands of individual homeowners. Arizona Public Service (APS), for example, is currently deluged with 30 GW of data center requests against its 10 GW maximum supply capacity, illustrating the scale of the energy crunch. Data centers are projected to more than double current energy demand by 2027.
While existing virtual power plant programs, such as APS's Cool Rewards, have demonstrated success in managing demand spikes, scaling them to meet data centers' immense and consistent energy needs presents unprecedented challenges. Concerns include the sheer volume of energy required by a single data center (more than 100,000 homes), mismatched production and use patterns, fair compensation structures for participants, and the readiness of the local workforce to install thousands of systems rapidly. Despite these hurdles, proponents like Stacy Tellinghuisen of Western Resource Advocates see the proposal as a valuable "piece of the puzzle" that could offer immediate relief to household energy bills and bridge the gap between data center development and community concerns.