| 4d Electric LLC | EC | 2021 | Active |
| 850 Trades LLC | EC | 2024 | Active |
| A & E Electric | EC | 2021 | Active |
| Academy School District Twenty | EC | 2006 | Active |
| Adachi Electric LLC | EC | 2024 | Active |
| ADV Electric Llc | EC | 2021 | Active |
| Advanced Electric Group | EC | 2012 | Active |
| Affordable Services Corp | EC | 2024 | Active |
| Amp Electric Inc. | EC | 2014 | Active |
| Amped Up Electrical Services LLC | EC | 2025 | Active |
| ANJ Electric LLC | EC | 2012 | Active |
| Anue, LLC | EC | 2024 | Active |
| Apache Electric and Maintenance Inc | EC | 2020 | Active |
| Aspen Sign & Lighting Co., Inc | EC | 2016 | Active |
| Aspen View Electric LLC | EC | 2023 | Active |
| ATC Heating, LLC | EC | 2025 | Active |
| Atmosphere LLC | EC | 2024 | Active |
| B.S. Electric LLC | EC | 2026 | Active |
| Bee Electric LLC | EC | 2015 | Active |
| Bender Electrical Services LLC | EC | 2026 | Active |
| Bertanzetti Electric, LLC | EC | 2005 | Active |
| BES Electric Service | EC | 2004 | Active |
| Bible Electric, Inc. | EC | 1997 | Active |
| Big Dog Electric LLC | EC | 2022 | Active |
| Bourland Electric LLC | EC | 2019 | Active |
| Brasier Lighting and Power LLC | EC | 2025 | Active |
| Bridge Electric LLC | EC | 2021 | Active |
| Brodhagen Enterprises LLC | EC | 2025 | Active |
| Brookman Electric, LLC | EC | 2025 | Active |
| C & C Electric, LLC | EC | 2009 | Active |
| C & D Electric, Inc. | EC | 1988 | Active |
| C2 Electrical Solutions LLC | EC | 2026 | Active |
| Caillouette Electric, LLC | EC | 2026 | Active |
| Carbon Electric LLC | EC | 2019 | Active |
| Cardinal Electric LLC | EC | 2003 | Active |
| Celtic Electrical LLC dba Celtic Electric | EC | 2018 | Active |
| Centennial State Electric | EC | 2000 | Active |
| Chivalry Carpentry & Electricity LLC | EC | 2003 | Active |
| Chosen Electrical Services LLC | EC | 2017 | Active |
| Cloudfire Services, Inc. | EC | 1965 | Active |
| CO Energy Electric LLC | EC | 2021 | Active |
| CO-Pro Electric LLC | EC | 2018 | Active |
| Colorado Circuit Tree LLC | EC | 2023 | Active |
| Colorado Electrical LLC | EC | 2020 | Active |
| Colorado Electrical Systems, LLC | EC | 2017 | Active |
| Colorado Springs Electrical Contractor Inc | EC | 2023 | Active |
| Colowatt Electric LLC | EC | 2016 | Active |
| Cornerstone Power Solutions LLC | EC | 2026 | Active |
| COS Neighborhood Electrician, LLC | EC | 2024 | Active |
| CTP Electric LLC | EC | 2015 | Active |
| Curtis Electrical Contractors, LLC. | EC | 2001 | Active |
| Dauntless Solutions LLC | EC | 2025 | Active |
| Denham Electric | EC | 2015 | Active |
| DePaul Electric, Inc. | EC | 2011 | Active |
| Die Hard Inc. | EC | 2015 | Active |
| Diller Electric | EC | 2012 | Active |
| Distinguished Electrical Company LLC | EC | 2023 | Active |
| District Electric Co LLC | EC | 1969 | Active |
| Divide South Inc | EC | 2017 | Active |
| DMCP Services | EC | 2016 | Active |
| Dr Electric LLC | EC | 2012 | Active |
| Eagle Eye Electric Services, LLC | EC | 2020 | Active |
| Eastex Tower LLC | EC | 2010 | Active |
| Eden Electric & Construction, Inc. | EC | 1995 | Active |
| El Paso County Government | EC | 1997 | Active |
| El Paso County School District Number Eleven | EC | 1983 | Active |
| Electric Service of Colorado, Inc | EC | 2023 | Active |
| Electrical Excellence Enterprises | EC | 1986 | Active |
| Electrical Experts of Colorado LLC | EC | 2017 | Active |
| Electrical Pros of Colorado LLC | EC | 2020 | Active |
| Electrical Solutions, LLC | EC | 2007 | Active |
| Electro Data Comm | EC | 1993 | Active |
| Elite Service Electricians, LLC | EC | 2024 | Active |
| Eluxx LLC | EC | 2026 | Active |
| EMF Electric | EC | 2009 | Active |
| Empire Incorporated | EC | 2009 | Active |
| EnJ Electric LLC | EC | 2023 | Active |
| Eoco Inc | EC | 2021 | Active |
| ESI Technologies LLC | EC | 2026 | Active |
| Essential Electric, LLC | EC | 2013 | Active |
| Excalibur Electric LLC | EC | 2022 | Active |
| Faith Enterprises Incorporated | EC | 1988 | Active |
| Family First Electric, LLC | EC | 2020 | Active |
| Fezatte Electrical LLC | EC | 2025 | Active |
| Fischer Electric LLC | EC | 2022 | Active |
| Force Electric LLC | EC | 2021 | Active |
| Foster Electric Corporation | EC | 1988 | Active |
| Front Range Electric of CO | EC | 2007 | Active |
| Gaddie Electric | EC | 2001 | Active |
| GDS Electric | EC | 2007 | Active |
| Gibson Electric LLC | EC | 1994 | Active |
| Glenn Wilson Electric Inc | EC | 2012 | Active |
| GOAT Electric Ltd. | EC | 2023 | Active |
| Good Light Electric LLC | EC | 2025 | Active |
| Grady Electrical Systems, LLC | EC | 2010 | Active |
| GrayC Electric Inc | EC | 2023 | Active |
| Green Electric Inc | EC | 1985 | Active |
| Greenhouse Technologies LLC | EC | 2023 | Active |
| Gregory A Engberg, LLC | EC | 2014 | Active |
| Gringo Dave's Electric, Inc. | EC | 2007 | Active |