E3 · May, 2026
As data centers and AI-enabled computing drive a scale of load growth utilities haven't seen in decades, large load tariffs have become the primary mechanism for allocating costs and protecting existing customers from cost shifts — but designs vary so widely that comparing them is difficult. In this new whitepaper, E3 partners with Halcyon to leverage data from Halcyon's Large Load Tariff Tracker and examine how these tariffs translate into actual electricity bills for large customers and how costs differ across regions and rate designs.