DTE Energy Company engages in the energy-related businesses and services. The company’s Electric segment generates, purchases, distributes, and sells electricity to approximately 2.3 million residential, commercial, and industrial customers in southeastern Michigan. It generates electricity through coal-fired plants, hydroelectric pumped storage, and nuclear plants, as well as wind and solar assets. This segment owns and operates 702 distribution substations with a capacity of approximately 37,710,000 kilovolt-amperes (kVA) and approximately 4,55,300 line transformers with a capacity of approximately 33,570,000 kVA.