Generates, transmits, distributes and sells electric energy in southeastern, east central and northern Wisconsin and in the Upper Peninsula of Michigan.

Sells wholesale electricity to 5 municipally owned systems, 2 rural cooperatives, 2 municipal joint action agencies and 48 other public utilities and power marketers throughout the region.

Purchases, distributes and sells natural gas to retail customers, and transports customer-owned gas in 4 distinct service areas in Wisconsin.

Has more than 60 gas service contracts for supply, pipeline capacity, underground storage and balancing services, and 26 gas transportation contracts.