| Aa American Electric Inc | EC-01 | 2009 | Active |
| Ae Electrical Services LLC | EC-01 | 2025 | Active |
| Airbest Home Services | EC-02 | 2026 | Active |
| Alavez Electric Inc | EC-01 | 2023 | Active |
| All Systems Integrated Inc | EC-06 | 2004 | Active |
| Allison Electrical Const Inc | EC-01 | 1992 | Active |
| Alroco Electric LLC | EC-01 | 2025 | Active |
| Alta Performance Services LLC | EC-01 | 2024 | Active |
| Am-Tel Communications LLC | EC-09 | 2010 | Active |
| Ampere Electric LLC | EC-01 | 2025 | Active |
| Anderson Electric 211 LLC | EC-02 | 2017 | Active |
| BCT Electrical Services Inc | EC-01 | 2005 | Active |
| Bens Electric LLC | EC-02 | 2023 | Active |
| Blue Line Water Inc | EC-3A, EC-91 | 2022 | Renew by Dec 23, 2026 |
| Boone Electric Construction | EC-01 | 2005 | Active |
| Bowers Home Services LLC | EC-01 | 2026 | Active |
| Bright Light Electric LLC | EC-01 | 2025 | Active |
| Btu Mechanical | EC-07 | 2015 | Active |
| Capital Lighting Company Inc | EC-01 | 2014 | Renew by Dec 10, 2026 |
| CBK Electrical Inc | EC-01 | 2012 | Active |
| Champ's Electric LLC | EC-02 | 2025 | Active |
| City Sign Service | EC-01 | 2026 | Active |
| Clean Water Pumps&Filters LLC | EC-3A, EC-91 | 2022 | Active |
| CMC Electric LLC | EC-02 | 2023 | Active |
| Coastline Electrix LLC | EC-01 | 2025 | Active |
| Commercial Communication SVC | EC-09 | 2000 | Active |
| Crimson City Electric LLC | EC-01 | 2023 | Active |
| Current Electric Of Wa LLC | EC-01 | 2007 | Active |
| Current Solutions NW | EC-01 | 2019 | Active |
| Dedicated Electrical SRVC LLC | EC-01 | 2015 | Active |
| Destiny City Electric LLC | EC-01 | 2012 | Active |
| Durapower Solutions | EC-07 | 2026 | Active |
| Electric Pro Inc | EC-01 | 2016 | Active |
| Electrical Outfitters NW Inc | EC-01 | 2021 | Active |
| Elite Electric Inc | EC-01 | 1995 | Active |
| Emerald State Electric LLC | EC-01 | 2015 | Active |
| Essential Electric | EC-01 | 2020 | Active |
| Evans Electric Group Inc | EC-01 | 2005 | Active |
| Far West Technologies Inc | EC-01 | 2025 | Active |
| Far West Technologies INC | EC-06 | 2011 | Active |
| First Light Veterans Contr LLC | EC-01 | 2023 | Active |
| Foundation Specialist LLC | EC-01 | 2020 | Active |
| Garner Electric Washington LLC | EC-01 | 2014 | Active |
| GCW Electric LLC | EC-02 | 2017 | Active |
| Hayes Heating And Cooling Inc | EC-01 | 2017 | Active |
| HB Electric Solutions Inc | EC-01 | 2016 | Active |
| Interstate Electric LLC | EC-01 | 2026 | Active |
| J M Corp & Son | EC-01 | 1990 | Active |
| Linx Integrated | EC-01 | 2008 | Active |
| Luminz Electric LLC | EC-01 | 2023 | Active |
| Madrona Electric LLC | EC-01 | 2015 | Active |
| McDonald & Sons Ventures LLC | EC-01 | 2019 | Active |
| McMullen Electric LLC | EC-01 | 2022 | Active |
| Meridian Center Electric Inc | EC-01 | 1969 | Active |
| Nexen Electrical Contractors | EC-01 | 2025 | Active |
| Northwest Electric Const Inc | EC-01 | 2006 | Active |
| Northwest Electrical & Ser Inc | EC-01 | 1999 | Active |
| Nuuco Electric Company | EC-01 | 2023 | Active |
| OHMS Electrical Services LLC | EC-01 | 2020 | Active |
| P & R Electrical Services LLC | EC-01 | 2020 | Active |
| P A C Fire | EC-06 | 2025 | Active |
| Pacific Home Electric LLC | EC-02 | 2007 | Active |
| Papa Nick Electric LLC | EC-01 | 2024 | Renew by Dec 18, 2026 |
| Piece Of Mind Home Comfort | EC-02 | 2025 | Active |
| PNW Electrical Services LLC | EC-01 | 2022 | Active |
| Puyallup Heating & A/C | EC-01 | 2018 | Active |
| Puyallup Valley Electric LLC | EC-01 | 2026 | Active |
| R & R Electric Services Inc | EC-01 | 2004 | Active |
| R-C True Line Corporation | EC-01 | 1997 | Active |
| Rainier Electrical LLC | EC-01 | 2025 | Active |
| Rainier Heating & Cooling LLC | EC-02 | 2026 | Active |
| Rainier Heating & Cooling LLC | EC-01 | 2025 | Active |
| Ranger Heating & Cooling LLC | EC-02 | 2019 | Active |
| Red Hawk Fire Protection LLC | EC-06 | 2021 | Active |
| Red House Electric LLC | EC-02 | 2011 | Active |
| Reed Electric | EC-01 | 2024 | Active |
| Refrigeration Unlimited LLC | EC-01 | 2019 | Active |
| RKB Electric LLC | EC-01 | 2023 | Active |
| RMG Electric LLC | EC-02 | 2024 | Active |
| Royal Electric | EC-02 | 2026 | Active |
| Royal Electric LLC | EC-01 | 2026 | Active |
| Schauble Electrical LLC | EC-01 | 2023 | Active |
| Schwab Electric LLC | EC-02 | 2017 | Active |
| Security Gate and Access LLC | EC-10, EC-06 | 2012 | Active |
| Serenity Air Inc | EC-01 | 2024 | Active |
| Simply Electric LLC | EC-02 | 2026 | Active |
| Sound Heating & A/C Inc | EC-01 | 2014 | Active |
| South Hill Electric LLC | EC-01 | 2025 | Active |
| Spark Pro Electric LLC | EC-02 | 2024 | Active |
| Sunrise Electric LLC | EC-02 | 2025 | Active |
| Tac Electric LLC | EC-01 | 2025 | Active |
| Theater One Inc | EC-06 | 2009 | Active |
| Tides Electric LLC | EC-02 | 2015 | Active |
| Top Notch Electrical LLC | EC-01 | 2024 | Active |
| Traust Electric LLC | EC-02 | 2025 | Active |
| Trident Electrical LLC | EC-02 | 2026 | Active |
| True Light Electric Inc | EC-01 | 1996 | Active |
| Wired Up Building Soltns LLC | EC-01 | 2026 | Active |
| Woodland Electric LLC | EC-01 | 2020 | Active |
| Zippy Zack Electrical SVCS LLC | EC-02 | 2026 | Active |