IGS Energy is a family-owned energy company based in Dublin, Ohio, founded in 1989. It has become one of the leading energy providers in the U.S. and Canada, serving over 5 million customer equivalents with a workforce of more than 1,500 employees. The company offers a range of energy solutions, including natural gas, electricity, and solar energy, along with tools for energy efficiency and demand management.

Initially established as Interstate Gas Supply, IGS Energy has expanded its services across 18 states, catering to residential, commercial, and industrial customers. The company operates 20 compressed natural gas (CNG) refueling stations in several states, supporting alternative fuel infrastructure. Under the IGS Solar brand, it provides solar services, including community solar projects and residential rooftop solar programs. IGS Energy is committed to sustainability and customer service, reinvesting a significant portion of its earnings to support its mission and ensure long-term stability.