Cluster studies reduce the financial burden of grid expansion by evaluating multiple nearby data center proposals as a single combined load rather than through separate reviews. According to the authors of the newly released report, this method allows utilities to identify shared infrastructure solutions that integrate new demand more efficiently and at a lower cost.
“A cluster study can examine the combined demand of multiple facilities and identify coordinated, system-level solutions that can accommodate projected load growth more efficiently and at lower cost.”
Essentially, instead of looking at every new building on its own, engineers look at groups of buildings located close together. This means they can plan for one major power line or transformer that serves the whole group, which is cheaper and faster than building separate, overlapping equipment for every individual customer.
The Little Hoover Commission published its report ‘Data Centers and California Electricity Policy’ in Sacramento in March 2026. Led by Chair Pedro Nava, the oversight agency outlines a strategic framework to integrate energy-intensive data centers into the state’s grid without compromising ratepayer affordability or climate targets.
