Hawaii has not introduced a dedicated large-load or data center tariff. Hawaii generates roughly three-quarters of its electricity from imported petroleum, giving it the highest average electricity price of any US state — a cost structure that constrains large-load, energy-intensive siting far more than any tariff design question would.
Also active in Hawaii: Hawaii's isolated island grids (no interconnection between islands' grids in most cases, let alone to the continental US) mean any large AI or HPC load would need dedicated local generation capacity built specifically to serve it, a fundamentally different economic proposition than mainland grid-connected siting.
Figures compiled from the Edison Electric Institute's "Large Load Projects and Tariffs" (September 2026) member-company summary and public regulatory filings. Confirm current tariff terms directly with Hawaiian Electric and the relevant state public utility commission before relying on any figure for a capital decision.
Weighing Hawaii against another state or a Canadian province with a different rate and interconnection picture entirely? Run both sides of the comparison through our licensed AI data center cost configurator — it applies each jurisdiction's actual power rate, tax treatment and large-load tariff rules to the same seven build configurations.
