WEC Energy Group operates regulated electric and natural gas utility businesses serving customers across Wisconsin, Illinois, Minnesota, and Michigan through subsidiaries including Wisconsin Energy Corporation, Wisconsin Public Service Corporation, Peoples Gas Light & Coke Company, North Shore Gas Company, Minnesota Energy Resources Corporation, and Upper Michigan Energy Resources Corporation. The company generates revenues through rate-regulated operations providing electricity generation, transmission, and distribution services, as well as natural gas distribution and transportation to residential, commercial, and industrial customers, with cost recovery mechanisms for fuel, purchased power, and other operating expenses approved by state utility commissions. In addition to core utility operations, WEC Energy invests in renewable energy infrastructure including solar and wind projects and manages a diversified capital structure comprising common equity, preferred stock, and debt while maintaining investment-grade credit ratings across its major subsidiaries.