Constellation Energy

Constellation has a long-standing and deeply rooted natural gas supply business in Wisconsin, which dates back to 1987. We partner with our customers to help them manage their energy costs in what can be a volatile natural gas market.

Constellation is the largest producer of carbon-free energy in the United States and serves approximately 2 million customers, including three-quarters of the Fortune 100. We operate in 48 states and the District of Columbia, offering a broad portfolio of energy solutions including electricity, natural gas, renewable energy, and energy efficiency services