Exelon Corp. and Constellation have donated $1.8 million for a new energy exhibit at the

, the first public display of their charitable commitment to the city and state since the merger between the energy giants closed in March, the companies announced Tuesday.


In acquiring Constellation, Exelon promised to maintain the Baltimore company's annual charitable contribution of $7 million in Baltimore and Maryland for at least a decade. The financial commitment was part of a $1 billion package of concessions associated with regulatory approval from the Maryland Public Service Commission.

Calvin Butler Jr., Exelon's senior vice president of corporate affairs, said the donation was an example of the companies' "delivering on [their] promise."

"It's important for us that the mayor, the Maryland Public Service Commission and the governor know we are serious about doing what we said," Butler said after a news conference at the


The new exhibit will be on the center's third floor and will feature interactive displays exploring all aspects of energy, including how it's produced, distributed and consumed, said Van Reiner, the center's president and chief executive officer.

The exhibit, whose details are still being worked out, is expected to open late next year.

"We want to educate people on the ecosystem that is electricity," Reiner said.

The new Exelon-Constellation exhibit will be the first new display since a cellular biology section opened four years ago and will be timely, given recent attention to new energy technology, renewable energy and conservation, Reiner said.

Baltimore Mayor Stephanie Rawlings-Blake praised the companies for their contribution, emphasizing that the

receives little city and state funding and relies mostly on private and corporate donations.

Reiner said the science center's partnership with Constellation and its utility, Baltimore Gas and Electric, goes back many decades. In recent years, Constellation has provided sponsorships, capital investment and membership support, officials said.