WEC Energy Group is a Milwaukee, Wisconsin–based regulated energy holding company whose primary businesses are the generation, transmission and distribution of electricity and the distribution of natural gas. The company operates through a set of utility subsidiaries that provide bundled energy service, customer billing and energy-related programs to residential, commercial and industrial customers. As a regulated utility group, WEC’s operations focus on delivering reliable service while managing infrastructure investment and compliance with state and federal utility regulation.
Its utility subsidiaries include well-known regional operators such as We Energies and Wisconsin Public Service, along with Chicago-area natural gas utilities that were part of the Integrys Energy Group acquisition. Collectively, these businesses serve customers across Wisconsin, parts of Illinois and portions of the Upper Peninsula of Michigan, offering local grid services, natural gas delivery and customer energy solutions tailored to regional needs.
WEC Energy Group’s activities span electric generation (including utility-scale and contracted resources), transmission and distribution system maintenance, natural gas distribution and a range of customer-facing services such as energy efficiency programs, demand response and renewable energy offerings. The company has been involved in modernizing its grid infrastructure, investing in reliability and safety upgrades, and integrating more renewable resources while managing the transition away from older fossil-fueled generation assets in line with regulatory and policy developments.
Historically, a notable milestone for the company was the 2015 acquisition of Integrys Energy Group, which expanded its geographic footprint and utility portfolio. Today, the company emphasizes long-term capital investment in infrastructure, regulatory engagement, and operational reliability, while pursuing initiatives related to sustainability and the energy transition under the oversight of its executive leadership and board of directors.