Constellation and the Archdiocese of Baltimore Announce Construction of 5.4 Megawatt Solar Project

December 10, 2015

​BALTIMORE, MD — Constellation, a subsidiary of Exelon Corporation and a leading competitive retail energy supplier, and the Archdiocese of Baltimore today announced the construction of a 5.4-megawatt (DC) aggregate solar generation project. The solar power system, located at Perryman Station in Harford County, Md., is expected to generate enough electricity to meet approximately 20 percent of the Archdiocese’s electricity needs. 

“Pope Francis has invited the Church and all of us to take steps to responsibly care for our common home,” Archbishop William E. Lori said.  “This new solar power system will allow us not only to better manage our energy costs and devote more funding to the many important programs and ministries we have in place to support our community, but also to educate our parishioners about sustainable initiatives.”

The project expands Constellation’s role as the No. 1 solar energy producer in Maryland. The company operates more than 35 megawatts of solar projects in the state and expects to have an additional 25 megawatts operational by the end of 2015. 

The project required no upfront capital from the Archdiocese. Constellation will own and operate the solar power system. The Archdiocese will purchase the electricity generated by the solar panels from Constellation under a 20-year power purchase agreement. 

“Constellation is committed to supporting renewable energy in Maryland, and we are pleased to help the Archdiocese better manage their energy costs through supporting this solar power project,” said Mark Huston, president of Constellation Retail. "This system will allow them to devote more funding to important community programs and share the importance of clean energy resources with their parishioners.” 

The solar power system will be composed of approximately 17,700 photovoltaic panels and is expected to generate approximately 7.2 million kilowatt-hours of electricity in the first year. Generating the same amount of electricity using nonrenewable sources would result in the release of approximately 5,000 tons of carbon dioxide, or the equivalent emissions from 1,045 passenger vehicles annually, according to U.S. EPA data for the region.

Constellation currently owns and operates more than 250 megawatts of solar installations that have been completed or are under construction for commercial and government customers throughout the United States.  

By structuring its solar projects as power purchase agreements or solar services agreements, Constellation offers solar installations that may require no upfront capital from customers and may provide fixed power costs that are less than projected market rates. Constellation commercial customers, universities, college systems, hospitals and government agencies interested in on-site solar installations may contact Constellation at or 1-877-427-2005.

Tags: Clean & Efficient Energy Supply

About Constellation

Constellation is a leading competitive retail supplier of power, natural gas and clean energy solutions for homes and businesses across the continental United States. Constellation's family of retail businesses serves approximately 2 million residential, public sector and business customers, including three-fourths of the Fortune 100. Baltimore-based Constellation is a subsidiary of Exelon Corporation (Nasdaq: EXC), the nation's leading competitive energy provider, with 2020 revenues of approximately $33 billion, and more than 30,000 megawatts of owned capacity comprising one of the nation's cleanest and lowest-cost power generation fleets. Learn more at or on Twitter at @ConstellationEG.

For more information, contact:

Christina Pratt, Constellation