If you're here looking up The United Illuminating Company 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. The United Illuminating Company also goes by or is associated with the names United Illuminating. They are considered to be part of the following sectors and industries: electric, utilities. The United Illuminating Company is associated with terms like transmission and distribution, subsidiary of avangrid by their customers and industry analysts. They employ 130 people according to customers in the know.