Seattle Electricity Rates
ElectricChoice Energy Research · Updated
- The average residential electricity rate in Seattle is 11.52¢ per kWh, roughly 37% below the national average.
- A typical Seattle home pays about $95/month for electricity, with winter heating bills reaching $120–$140.
- Seattle City Council has approved a 4.8% rate increase for 2027 under the biennial rate plan.
Why Seattle Power Is So Cheap
Seattle residents are served by Seattle City Light, a publicly owned municipal utility governed by Seattle City Council — not a state PUC. Bills use a two-tier conservation rate: the first 400 kWh each month costs just 6.38¢/kWh, while usage above 400 kWh is billed at 10.44¢/kWh. This structure rewards energy conservation and keeps bills remarkably low for moderate usage.
| 11.52¢ | Effective Residential Rate | Blended cost per kWh under Seattle City Light’s two-tier conservation rate at 800 kWh including service charge. |
| −37% | Below U.S. National Average | Seattle residents pay roughly a third less than the current U.S. benchmark of 18.34¢/kWh. |
| ~$95 | Average Monthly Bill | Typical monthly cost for a home using 800 kWh, well below the national average. |
| 480K | Customers Served | By Seattle City Light within the City of Seattle, making it the 10th-largest public utility in the US. |
Two-Tier Conservation Rate — Residential Tariff Breakdown
Effective · Authorized under Seattle City Council Ordinance 126888
| Bill Component | Description | Rate / Cost |
|---|---|---|
| Monthly Service Charge | Fixed grid connection fee | $5.81 / month |
| Tier 1 Energy (first 400 kWh) | Conservation baseline — low-cost block | 6.383¢ / kWh |
| Tier 2 Energy (above 400 kWh) | Usage above conservation threshold | 10.44¢ / kWh |
| Effective Blended Rate | All-in cost at typical 800 kWh usage | ~11.52¢ / kWh |
Municipal Public Utility
Unlike most US cities served by investor-owned utilities, Seattle City Light is owned by the City of Seattle and governed by the City Council. There are no shareholders to pay — all revenue goes back into grid maintenance and capital improvements.
Nearly 100% Hydroelectric
Seattle City Light’s generation is 87% hydroelectric, fed by dams on the Skagit River (Ross, Diablo, Gorge) and long-term BPA contracts for Columbia River hydro. This makes it one of the greenest and cheapest utilities in the country.
Conservation Tiered Pricing
The two-tier rate structure deliberately incentivizes conservation: at 400 kWh the rate jumps 64%. Most Seattle homes use 600–900 kWh, making Tier 2 the marginal rate for typical households. The design reflects Seattle’s environmental values.
Rate Structure & Bill Estimates
Seattle City Light uses a single residential rate schedule with two energy tiers. There are no time-of-use or demand-charge alternatives — all residential customers are billed on the same conservation-tiered tariff set by Seattle City Council.
Monthly Bill Estimator by Usage Level
Calculated using Seattle City Light two-tier rates effective January 1, 2026
| Usage Level | Household Type | Monthly Bill | Effective ¢/kWh |
|---|---|---|---|
| 400 kWh | Apartment — Uses only Tier 1 | $31.34 | 7.84¢/kWh |
| 800 kWh | Typical Home — Active — blended tiers | $73.10 | 9.14¢/kWh |
| 1,500 kWh | Large Home — Electric Heat | $146.18 | 9.75¢/kWh |
Bills include the $5.81 monthly service charge. At 400 kWh all usage falls within Tier 1. At 800 kWh and above, the Tier 2 rate (10.44¢) applies to every kWh beyond 400. Actual bills may include city taxes and conservation charges.
How the Two-Tier Rate Works
Seattle City Light’s conservation rate rewards moderate usage — every kWh above the 400 kWh threshold costs 64% more
The low-cost tier covers essential household usage. A 400 kWh apartment stays entirely in Tier 1, paying just ~$31/month including the service charge.
Every kWh above 400 is billed at the higher tier. A typical 800 kWh home pays Tier 2 on half its usage, making this the marginal rate for most Seattle households.
Unlike investor-owned utilities, Seattle City Light does not offer time-of-use pricing. Rates are the same regardless of time of day, day of week, or season.
Rate History
Seattle City Light’s 800 kWh bill has risen from $74.51 in January 2021 to $92.32 in January 2026. Seattle City Council has approved an additional 4.8% increase for 2027 under the biennial rate plan.
2027 Biennial Rate Increase
Seattle City Council has approved a 4.8% residential increase for 2027, the second year of the 2026–2027 biennial rate plan. A typical 800 kWh bill rises from ~$95 to $99/month. The increase funds grid modernization and wildfire resilience improvements.
Biennial Rate Adjustment
Strategic Plan Rate Path
Council-Approved Increase
Infrastructure Investment
Biennial Rate Plan
COVID Rate Freeze Ended
Winter Bills & Hydropower
Seattle bills range from $63 in July to $131 in December. This month (September), a typical home pays around $73. Seattle City Light generates 87% of its power from hydroelectric dams with near-zero carbon emissions.
12-Month Seasonal Bill Estimate
Modeled for a typical 800 kWh home under Pacific Northwest heating degree days — winter peaks, mild summers
Seattle bills swing from $63 in July to $131 in December. Winter electric heating drives December–February peaks, while Seattle’s mild summers — where most homes lack air conditioning — produce the lowest bills of the year.
Seattle City Light Generation Fleet
Fuel mix powering Seattle — carbon-neutral since 2005
Seattle City Light has been carbon-neutral since 2005 and generates 87% of its power from hydroelectric dams: Ross Dam (360 MW), Diablo Dam (159 MW), and Gorge Dam (170 MW) on the Skagit River, plus Boundary Dam (1,040 MW) on the Pend Oreille River. BPA contracts provide additional Columbia River hydro. The utility is one of the greenest large utilities in the world.
Seattle vs. the Rest
Seattle’s 11.52¢/kWh rate is 37% below the U.S. average of 18.34¢/kWh, comparable to Tacoma (10.88¢) and Spokane (12.14¢), and significantly cheaper than Portland, OR (15.22¢).
Effective Residential Electricity Rate Comparison
Effective rate per kWh based on benchmark 800 kWh residential consumption
Washington State’s hydro-rich municipal utilities consistently rank among the cheapest in the nation. View our comprehensive 50-state electricity price index or see the full Washington electricity rates page for statewide data.
Programs & Discounts
Seattle City Light offers some of the most generous utility assistance and incentive programs in the country, including a 60% bill discount for qualifying low-income residents, free weatherization, and EV charger rebates.
HomeWise Weatherization
Free home weatherization for income-qualifying Seattle households including insulation, air sealing, and duct repair. Income threshold: 80% area median income. Helps reduce winter heating bills by 15–25%.
Utility Discount Program (UDP)
60% discount on Seattle City Light bills for qualifying low-income Seattle residents. One of the most generous utility discount programs in the country — a typical 800 kWh bill drops from ~$95 to ~$38/month.
EV Charging Incentives
Seattle City Light offers up to $1,000 rebate for home Level 2 EV charger installation. Additional rebates available for multifamily property EV infrastructure to support Washington’s growing electric vehicle adoption.
Frequently Asked Questions
What is the average electricity rate in Seattle?
About 11.52¢/kWh under Seattle City Light’s two-tier residential tariff, roughly 37% below the national average of 18.34¢/kWh. Seattle has among the cheapest electricity of any major U.S. city.
Is Washington a deregulated electricity state?
No. Washington is fully regulated. Seattle City Light is a municipal utility owned by the City of Seattle and governed by City Council. There is no retail choice for residential consumers.
Who is the electric utility for Seattle?
Seattle City Light, a publicly owned municipal utility serving the City of Seattle and King County. For outages: 206-684-3000 or seattle.gov/city-light.
Why is Seattle electricity so cheap?
Hydroelectric power. Seattle City Light generates 87% of its electricity from Pacific Northwest dams, which have virtually zero fuel costs once built. The municipal ownership structure (no shareholders) also keeps rates low — all revenue goes back into grid maintenance rather than investor dividends.
What is the average monthly electric bill in Seattle?
About $85–$95/mo for 800 kWh. Winter heating bills (Dec–Feb) can reach $120–$140 for homes with electric heat. Seattle summers are mild and most homes don’t have or need AC.
How do I report a power outage in Seattle?
Call Seattle City Light at 206-684-3000 or report online at seattle.gov/city-light/outages. The utility provides a live outage map with restoration estimates.
How does Seattle compare to other Pacific Northwest cities?
Seattle’s 11.52¢/kWh is typical for the hydro-rich PNW. Tacoma (10.88¢) is slightly cheaper. Portland, OR (15.22¢) costs more because Portland General Electric has a more diverse fuel mix with less hydro. All three cities remain well below the national average of 18.34¢/kWh.
