![]() RGC Resources RGC Resources is an energy company which is engaged in the regulated sale and distribution of natural gas to residential, commercial and industrial customers. | ![]() Tecogen Tecogen is a company that designs, manufactures, markets, installs, and maintains combined heat and power products. | MarkWest MarkWest is a company that specializes in gathering, processing, and transporting natural gas. | |
Founding Date | Founding Date 1912 | Founding Date 2000 | Founding Date 2002 |
Type | Type Public | Type Public | Type Subsidiary |
Tags | |||
Locations | Locations Roanoke, US HQ | Locations North Billerica, US HQ Toronto, CA Portland, US Waltham, US | Locations Denver, US HQ |
Employees | Employees 1064% decrease | Employees 911% decrease | Employees 592 |
Valuation ($) | Valuation ($) 207 m | Valuation ($) 21.4 m | Valuation ($) N/A |
Financial | |||
Revenue (est.) | Revenue (est.) $95.3m (FY, 2025) | Revenue (est.) $27.1m (FY, 2025) | Revenue (est.) N/A |
Net income | Net income $13.3m (FY, 2025) | Net income ($8.2m) (FY, 2025) | Net income N/A |

Tecogen is a company that designs, manufactures, markets, installs, and maintains combined heat and power products.
View companyMarkWest is a company that specializes in gathering, processing, and transporting natural gas.
View company