Vectren Corporation is an energy holding company headquartered in Evansville, Ind. Vectren's wholly owned subsidiary, Vectren Utility Holdings, Inc., serves as the intermediate holding company for three operating utilities: Vectren Energy Delivery of Indiana - North (Vectren North), Vectren Energy Delivery of Indiana - South (Vectren South) and Vectren Energy Delivery of Ohio (VEDO).

Vectren North provides energy delivery services to 570,000 natural gas customers located in central and southern Indiana. Vectren South provides energy delivery services to 142,000 electric customers and 111,000 gas customers located in southwestern Indiana. Vectren South also owns and operates electric generation to serve its electric customers and optimizes those assets in the wholesale power market. VEDO provides energy delivery services to approximately 314,000 natural gas customers located in west central Ohio.

Vectren's total generation is nearly 1,300 megawatts (MW) and includes 1,000 MW of coal-fired generation, 295 MW of gas-fired generation and 3.2 MW of landfill gas-fired power. In addition, the company has 30 MW of purchased wind power and another 100 MW of purchased power. Furthermore, interruptible load and demand side management initiatives can yield more than 60 MW of energy savings to meet peak demand if needed.

Vectren's Nonutility Group is involved in four primary business areas: Infrastructure Services, Energy Services, Energy Marketing and Coal Mining. Infrastructure Services provides underground construction, repair, and replacement services (Miller Pipeline and Minnesota Limited.) Energy Services provides energy performance contracting services and renewable energy project development (Energy Systems Group). Energy Marketing markets natural gas (ProLiance Energy). Coal Mining mines and sells coal (Vectren Fuels).