Commercial Energy in Seattle, WA

Seattle City Light commercial rates are among the lowest in the Pacific Northwest — based on Washington State averages but typically lower due to municipal hydro sourcing.

The primary commercial electric utility in Seattle is Seattle City Light (City of Seattle, municipal utility). Seattle operates under a regulated utility structure — Seattle City Light supplies electricity at rates approved by the state public utilities commission.

Seattle businesses are eligible for federal incentives including the 30% Investment Tax Credit (ITC) for solar and battery storage, the 179D tax deduction (up to $5.36/sqft for energy-efficient commercial buildings), and the 40% bonus depreciation for qualifying equipment in 2026. Washington state incentives through DSIRE apply. Your utility — Seattle City Light — may also offer direct rebates for qualifying commercial efficiency upgrades. Use our Incentive Finder for a personalized list.

Yes. Seattle Building Tune-Ups Ordinance applies to Tune-Ups: ≥50,000 sqft; Benchmarking: ≥20,000 sqft in Seattle. Seattle's Building Tune-Ups Ordinance (SMC 22.920) requires buildings ≥50,000 sqft to conduct periodic operational tune-ups to optimize energy performance. Seattle also requires annual energy benchmarking for buildings ≥20,000 sqft under the Benchmarking Ordinance (SMC 22.920). Non-compliance can result in financial penalties. Work with a qualified energy auditor or consultant to assess your building's current performance and compliance pathway.

Yes. C-PACE (Commercial Property Assessed Clean Energy) financing is available in Washington. C-PACE allows Seattle commercial property owners to finance energy efficiency, solar, storage, and resiliency improvements with repayment attached to the property via a special assessment — enabling 100% upfront financing with repayment spread over 10–30 years.