| Business | Phone |
| Alternative Heating Systems 1630 63rd St, Boulder 80301 | (303) 443-2881 |
| Digital Solar Technologies 5775 Arapahoe Ave, Boulder 80303 | (303) 442-6553 |
| Rms Electric 2820 Wilderness Pl, Boulder 80301 | (303) 444-5909 |
| Lighthouse Solar 3550 Frontier Ave., Boulder 80301 | (303) 638-4562 |
| Lumos Solar 3550 Frontier Ave., Boulder 80301 | (303) 449-2394 |