for about 750,000 US homes.) That kind of load can strain local grids unless new generation and storage arrive quickly. Microsoft says it’s still hunting for ways to keep the hourly target, including a deal with We Energies to add 1.2 gigawatts of carbon-free projects in Wisconsin – like solar and batteries – expected to start coming online in late 2028. And to secure steady, always-on electricity, it’s also widening its options: a 2024 agreement with Constellation Energy is tied to restarting a unit at Pennsylvania’s Three Mile Island nuclear plant.
Why should I care?
For markets: Data centers are turning into power companies’ biggest customers.
Multi-gigawatt facilities are pushing utilities, renewable developers, and big tech into long-dated contracts for solar, batteries, and nuclear. The constraint is timing: new gas plants are often faster to permit and build than wind or solar plus grid upgrades, which could keep natural gas demand – and power prices in constrained regions – in focus even as “clean” deals multiply.
The bigger picture: Climate promises now hinge on grids, not just corporate budgets.
Hourly clean-energy matching assumed electricity demand would rise steadily. AI changes the slope, bringing huge loads on a tight timeline. That makes 2030-era pledges harder to hit without faster permitting, more transmission, and more “firm” power – sources that run regardless of weather – like nuclear, plus large-scale storage.