If you're here looking up FirstEnergy (formerly Allegheny Power) customer care, you probably already know who they are. But it helps to get an idea of how big they are and what their support operation looks like if you are a customer. FirstEnergy (formerly Allegheny Power) also goes by or is associated with the names First Energy, Allegheny, Allegheney Power. They are considered to be part of the following sectors and industries: electric, utility. FirstEnergy (formerly Allegheny Power) is associated with terms like electricity generation, transmission and distribution, energy management, other energy-related services, public company by their customers and industry analysts. They employ less than 50 people according to customers in the know.