What is modeled — and what is not
Production
1,094 kWh/kW-year state planning benchmark from the existing PVWatts-based CalcuRiver dataset.
Installed cost
$2.64/W planning benchmark for Washington.
Electricity value ceiling
14.71¢/kWh · EIA residential benchmark for Washington (2026-07).
Puget Sound Energy rate context
7.55¢/kWh · Super off-peak. This is utility rate-plan context, not a verified solar export-compensation rate.
Utility source: Puget Sound Energy filed Schedule 327 · verified 2026-09-28.
Production: NREL PVWatts methodology · Cost: 2026 state / local marketplace benchmark.
Solar export source: PSE Customer Connected Solar / Schedule 150 · PSE Customer Connected Solar FAQ · verified 2026-10-03.
Puget Sound Energy export policy encoded
PSE Schedule 150 nets eligible customer generation against usage and banks excess net-metering kWh for later bill periods. Banked credits expire March 31 each year. Schedule 150 remains available until a replacement customer-connected-solar schedule is in place. Annualized kWh banking is a planning approximation. Enter annual household use; credits that remain at the March 31 reset are excluded from the base savings value, and fixed charges remain outside the estimate.
Continue this Washington cost analysis
City solar pages in this utility context
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
Compare transportation electricity costs in the same state.
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.