32,700 megawatts of clean, low-cost energy turns volatile markets into reliable ones

Customers expect always-on power. Constellation delivers.

Constellation is the leading source of wholesale energy in the U.S. for utilities, municipal co-ops and energy retailers. We take a customer-centric approach, balancing power generation with consumer demand to deliver price stability and ensure generation availability through changing market and weather conditions – even during perfect storms of record-breaking temperatures, peak energy use, and power delivery disruptions.

A diverse portfolio that advances clean energy.

Constellation’s wholesale business supports our generation and customer load obligations through the optimization of Exelon's diverse portfolio of 32,700 megawatts of owned generation capacity, which comprises one of America’s cleanest and lowest-cost fleets of power plants.

Constellation also is among the 10 largest natural gas marketers in the nation. We manage a robust fuels platform of transport, storage, and supply to serve the demand of our gas-fired generation plants and customers. Our trading desk is the third largest in the nation.

Constellation's 65,000-square-foot trading floor

Constellation's traders buy and sell energy from the state-of-the-art, 65,000-square-foot trading floor. It operates 24/7 and monitors the pricing and market activity in North America's ISOs (Independent System Operators) and RTOs (Regional Transmission Organizations.)

A wholesale energy market is where competing generators offer their output to retailers. Competition drives innovation and consumer choice.  Wholesale markets also allow for a real-time alignment of energy supply and demand, which keeps prices low and steady.

Constellation’s trading desk is backed by the financial strength of parent-company Exelon and led by a best-in-class team with unmatched technical knowledge, enabling it to maintain a leadership position from which to buy, sell, and monitor the energy marketplace. Our wholesale team includes energy traders and natural gas traders who manage customer accounts by market region and timeframe; Generation Dispatch that serves as a conduit between our traders, grid operators, and Exelon power plants; and meteorologists who provide real-time and long-range weather information to anticipate market demand.

Customers get price and service stability. Investors get superior financial results.

Constellation manages market volatility, delivers consistency and efficiency, and helps customers meet environmental goals. Direct access to every part of the value chain helps us bring innovative, integrated energy solutions and empowers customers to make smarter choices.

For more than 10 years, customers have counted on us as a trusted and dependable wholesale and retail energy supplier. What could we do for you?