Unicom company supplies electricity to 3.4 million residential and business customers in Illinois. Read press releases and find employment.

Servicing Western Chicago suburbs, this energy company describes its services in heating, air filtration, air conditioning and humidifying.

Represents 28 consumer-owned utilities and provides them with a variety of services, including legal and government representation.

Investor-owned holding company for two utilities is based in Chicago. See a message from the chairman, or find out about service territories.