How to build a 400 MW AI campus when the utility company says ‘wait’

Utilities take seven to twelve years to build the substations and transmission lines needed for major new power users, but companies building AI data centers plan in months, not years. That mismatch is pushing some developers to skip the wait for grid connections entirely and build their own power systems on site, known as microgrids, using generators, batteries, and solar.

This matters to homeowners because of how utility upgrades get paid for. When a utility builds new infrastructure to serve one large data center, that cost often doesn't stay with the company that caused it. Instead, it can get spread across the regional rate base, meaning everyday customers in the area end up covering part of the bill through their own electric rates. Developers choosing to go off-grid or build their own power supply keep those costs on their own side of the meter rather than passing them to neighboring homes and businesses.

The piece also argues that these on-site systems only deliver promised savings if they're run with software that predicts conditions and adjusts in real time, rather than older systems that just follow fixed rules. Whether this trend spreads or stays concentrated in major data center hubs will depend on how utilities and regulators respond, but it's worth watching if you live near a planned data center campus, since it could affect both local grid upgrades and who ends up paying for them.