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Competitive retail energy solutions and wholesale energy supply.

Constellation is a leading competitive retail and wholesale supplier of power, natural gas and energy products and services for homes and businesses across the continental United States. Our direct access to every part of the energy value chain delivers innovative, integrated energy solutions that give customers more choice in how they buy, manage and use energy.

Constellation has the market expertise, stability and scale to help customers maximize the value of their energy needs. For more than a decade, Constellation customers have relied on us to manage market volatility and provide value. 
As one of the nation’s largest retail energy suppliers, Constellation's power supply is backed by Exelon’s industry-leading portfolio of top-performing power plants and investment-grade balance sheet. Our core strategy of balancing power generation with customer load allows us to better manage through changing market and weather conditions. It also means we can offer consistent, high-quality service and stable prices to customers.
Constellation also is among the 10 largest natural gas marketers in the nation and manages a robust fuels platform of transport, storage and supply to serve the demand of our gas-fired generation plants and customers.