https://utilityratecalc.com/washington/ New and coming changes to residential electricity rates in Washington, from the official tariffs. en-us Mon, 02 Nov 2026 12:00:00 +0000 https://utilityratecalc.com/washington/seattle-city-light/Base service charge (Schedule RSC): $0.39 per day to $0.55 per day, from January 1, 2027. Seattle City Light, RSC (Residential: City Default (with Schedule RSS, Residential: Suburban Default)). Source: Ordinance 127473, SMC 21.49.030, Schedule RSC.Mon, 02 Nov 2026 12:00:00 +000005c06751d7518ff4 https://utilityratecalc.com/washington/seattle-city-light/Energy charge (Schedule RSC): 13.38¢ per kWh to 14.17¢ per kWh, from January 1, 2027. Seattle City Light, RSC (Residential: City Default (with Schedule RSS, Residential: Suburban Default)). Source: Ordinance 127473, SMC 21.49.030, Schedule RSC.Mon, 02 Nov 2026 12:00:00 +00001c1053093f4ba22b https://utilityratecalc.com/washington/avista-utilities/Colstrip adjustment (Schedule 99): −0.482¢ per kWh to 0¢ per kWh, from October 1, 2026. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history (columns Sch 99, 8/1/2026 and 10/1/2026).Thu, 01 Oct 2026 12:00:00 +0000f063f855bad67808 https://utilityratecalc.com/washington/avista-utilities/Participatory funding (Schedule 61): 0.003¢ per kWh to 0.001¢ per kWh, from August 1, 2026. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 61, Second Revision Sheet 61.Sat, 01 Aug 2026 12:00:00 +000040103e9bdfa86a3e https://utilityratecalc.com/washington/avista-utilities/Decoupling mechanism (Schedule 75): 0.068¢ per kWh to 0.139¢ per kWh, from August 1, 2026. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 75, Eleventh Revision Sheet 75.Sat, 01 Aug 2026 12:00:00 +0000608c57d4b3aa43cb https://utilityratecalc.com/washington/avista-utilities/Renewable energy credit revenue mechanism (Schedule 98): −0.018¢ per kWh to 0.093¢ per kWh, from August 1, 2026. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 98, Twelfth Revision Sheet 98.Sat, 01 Aug 2026 12:00:00 +0000ae97bf19824aa0f8 https://utilityratecalc.com/washington/avista-utilities/Power cost surcharge (Schedule 93): 0.291¢ per kWh to 0.751¢ per kWh, from July 1, 2026. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 93, Substitute Sixteenth Revision Sheet 93.Wed, 01 Jul 2026 12:00:00 +00000ffbf6095952b005 https://utilityratecalc.com/washington/tacoma-power/Customer charge (Schedule A-1, all but collectively metered apartments): $28.30 per month to $31.30 per month, from April 1, 2026. Tacoma Power, A-1 (Residential Service). Source: Tacoma Power Schedule A-1 Residential Service, effective April 1, 2025 (old value) and April 1, 2026.Wed, 01 Apr 2026 12:00:00 +000085f6b2a2c04f1398 https://utilityratecalc.com/washington/tacoma-power/Delivery charge (Schedule A-1): 4.2057¢ per kWh to 4.6295¢ per kWh, from April 1, 2026. Tacoma Power, A-1 (Residential Service). Source: Tacoma Power Schedule A-1 Residential Service, effective April 1, 2025 (old value) and April 1, 2026.Wed, 01 Apr 2026 12:00:00 +0000959f805b26cc392f https://utilityratecalc.com/washington/snohomish-county-pud/Energy charge (Schedule 7, before the BPA Residential Exchange Credit): 10.263¢ per kWh to 10.613¢ per kWh, from April 1, 2026. Snohomish County PUD, 7 (Residential Service). Source: Snohomish County PUD Electric Utility Rates, Schedule 7 – Residential Service.Wed, 01 Apr 2026 12:00:00 +000025fc05c5df0429f2 https://utilityratecalc.com/washington/seattle-city-light/Base service charge (Schedule RSC): $0.30 per day to $0.39 per day, from January 1, 2026. Seattle City Light, RSC (Residential: City Default (with Schedule RSS, Residential: Suburban Default)). Source: Ordinance 127122, SMC 21.49.030, Schedule RSC.Thu, 01 Jan 2026 12:00:00 +0000d772513b862d2ce2 https://utilityratecalc.com/washington/seattle-city-light/Energy charge (Schedule RSC): 13.22¢ per kWh to 13.38¢ per kWh, from January 1, 2026. Seattle City Light, RSC (Residential: City Default (with Schedule RSS, Residential: Suburban Default)). Source: Ordinance 127122, SMC 21.49.030, Schedule RSC.Thu, 01 Jan 2026 12:00:00 +000085d31a4b365baddb https://utilityratecalc.com/washington/avista-utilities/Wildfire expense balancing account (Schedule 88): 0.138¢ per kWh to 0.106¢ per kWh, from January 1, 2026. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 88, 2nd Substitute Fourth Revision Sheet 88.Thu, 01 Jan 2026 12:00:00 +0000ee672be103e991b3 https://utilityratecalc.com/washington/avista-utilities/Energy charge, first 800 kWh (Schedule 1): 9.17¢ per kWh to 10.322¢ per kWh, from January 1, 2026. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 1, Twentieth Revision Sheet 1.Thu, 01 Jan 2026 12:00:00 +0000c88118a669af9cad https://utilityratecalc.com/washington/avista-utilities/Energy charge, next 700 kWh (Schedule 1): 10.774¢ per kWh to 12.127¢ per kWh, from January 1, 2026. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 1, Twentieth Revision Sheet 1.Thu, 01 Jan 2026 12:00:00 +00001ccecc6f2608bc12 https://utilityratecalc.com/washington/avista-utilities/Energy charge, over 1,500 kWh (Schedule 1): 12.749¢ per kWh to 14.349¢ per kWh, from January 1, 2026. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 1, Twentieth Revision Sheet 1.Thu, 01 Jan 2026 12:00:00 +0000e59b07d33adcffef https://utilityratecalc.com/washington/avista-utilities/Residential exchange credit (Schedule 59): −0.411¢ per kWh to −0.246¢ per kWh, from November 1, 2025. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 59, Twenty Third Revision Sheet 59.Sat, 01 Nov 2025 12:00:00 +00007b227f71994a3e49 https://utilityratecalc.com/washington/avista-utilities/Clean energy implementation (Schedule 64): 0.039¢ per kWh to 0.036¢ per kWh, from November 1, 2025. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 64, First Revision Sheet 64.Sat, 01 Nov 2025 12:00:00 +00009ae5437f2dd4dc3c https://utilityratecalc.com/washington/avista-utilities/Insurance expense balancing account (Schedule 66): 0.095¢ per kWh to 0.145¢ per kWh, from November 1, 2025. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 66, Second Revision Sheet 66.Sat, 01 Nov 2025 12:00:00 +00006bd51e852972b30b https://utilityratecalc.com/washington/avista-utilities/Low income rate assistance (Schedule 92): 0.607¢ per kWh to 0.751¢ per kWh, from November 1, 2025. Avista Utilities, 1 (Residential Service). Source: Avista Washington electric rate history; Schedule 92, Seventeenth Revision Sheet 92.Sat, 01 Nov 2025 12:00:00 +00003dfa47b4ea9d8aee https://utilityratecalc.com/washington/snohomish-county-pud/Base charge, Medium service (Schedule 7): $0.59 per day to $0.80 per day, from April 1, 2025. Snohomish County PUD, 7 (Residential Service). Source: Snohomish County PUD Electric Utility Rates, Schedule 7 – Residential Service.Tue, 01 Apr 2025 12:00:00 +000059df796dcac111e0 https://utilityratecalc.com/washington/clark-public-utilities/Energy charge: 8.16¢ per kWh to 8.79¢ per kWh, from March 1, 2024. Clark Public Utilities, Residential (Residential Electric Service). Source: Clark Public Utilities Currents newsletter, February 2024 (Rate change effective March 1).Fri, 01 Mar 2024 12:00:00 +0000baa9e72ab60009fe https://utilityratecalc.com/washington/clark-public-utilities/Basic charge: $12.00 per month to $19.00 per month, from March 1, 2024. Clark Public Utilities, Residential (Residential Electric Service). Source: Clark Public Utilities Currents newsletter, February 2024 (Rate change effective March 1).Fri, 01 Mar 2024 12:00:00 +00003781bdd002554f93