| Business | Phone |
| Whitestone Energy 321 Railroad Ave, Greenwich 6830 | (203) 622-9222 |
| Elite Energy Systems Llc 14 Charles St, Greenwich 6830 | (203) 422-2319 |
| Greenwich Energy Capital Mgmt 25 Lewis St # 303, Greenwich 6830 | (203) 661-7939 |
| Greenwich Energy Investments 67 Mason St # 2, Greenwich 6830 | (203) 861-1360 |
| High Energy Capital 34 E Putnam Ave, Greenwich 6830 | (203) 622-8355 |