What is modeled — and what is not
Production
1,617 kWh/kW-year state planning benchmark from the existing PVWatts-based CalcuRiver dataset.
Installed cost
$3.43/W planning benchmark for Hawaii.
Electricity value ceiling
48.00¢/kWh · EIA residential benchmark for Hawaii (2026-07).
Hawaiian Electric rate context
14.99¢/kWh · Shift and Save daytime. This is utility rate-plan context, not a verified solar export-compensation rate.
Utility source: Hawaiian Electric Shift and Save Schedule R rates · verified 2026-09-29.
Production: NREL PVWatts methodology · Cost: 2026 state / local marketplace benchmark.
Why exact Hawaiian Electric solar savings stay guarded
CalcuRiver has a calculator-ready utility rate profile for Hawaiian Electric, but that does not automatically make the same plan a valid solar import/export tariff. Until a solar-specific compensation rule is verified, the calculator shows production, cost and a retail-value ceiling without flattening export compensation to an invented rate.
Continue this Hawaii cost analysis
Why this solar estimate changes
Solar value is driven by local production, installed cost, the retail value of electricity you avoid buying, and the compensation you receive for exported energy. CalcuRiver does not assume export credits equal the retail rate unless that utility program is explicitly verified.
Core logic: self-used solar offsets retail purchases; exported solar is valued only under a verified export-compensation rule.
Methodology & source policyConnect solar to the rest of the utility bill
Solar economics are easier to interpret when the tariff, storage and vehicle loads are connected to the same local context.
Utility tariff profile
Review the source tariff and verification status behind local electricity economics.
EV charging costs
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Battery + TOU economics
See whether storage changes self-consumption and time-of-use economics for this utility.
EV charger installation
Estimate Level 2 charger electrical work in the same state.