BALTIMORE, March 6 /PRNewswire-FirstCall/ -- Constellation Energy (NYSE: CEG) today announced that it has been named to Corporate Responsibility Officer (CRO) Magazine's 100 Best Corporate Citizens list, acknowledging excellence in corporate responsibility.

"Being recognized among the leaders for corporate social responsibility is a tremendous accomplishment for Constellation Energy," said Mayo A. Shattuck III, chairman, president and chief executive officer of Constellation Energy. "We take our commitment to responsible and excellent corporate citizenship in all facets of our business very seriously. Being included in CRO's ranking of the top 100 Best Corporate Citizens affirms that we are focused on doing the right things to make meaningful contributions to our employees, customers, partners, investors and our communities."

In partnership with IW Financial -- a Portland, Maine, research and consulting firm specializing in environmental, social and governance issues -- CRO ranked the corporate responsibility efforts of large-cap companies from the Russell 1000 index in eight categories: climate change, employee relations, environment, financial, governance, human rights, lobbying and philanthropy. CRO then determined the final ranking as a weighted average of these eight categories. With transparency being such an important component of corporate responsibility, IW Financial relies on publicly available data from company financial disclosures, sustainability, environment and citizenship reports, Web sites, Environmental Protection Agency databases and a number of other sources as part of its standardized research processes.

The 2008 list of the 100 Best Corporate Citizens marks the ninth year in publication. A complete list of CRO's 100 Best Corporate Citizens is available on the CRO's Web site (http://www.thecro.com).

Constellation Energy (www.constellation.com), a FORTUNE 125 company with 2007 revenues of $21 billion, is the nation's largest competitive supplier of electricity to large commercial and industrial customers and the nation's largest wholesale power seller. Constellation Energy also manages fuels and energy services on behalf of energy intensive industries and utilities. It owns a diversified fleet of 78 generating units located throughout the United States, totaling approximately 8,700 megawatts of generating capacity. The company delivers electricity and natural gas through the Baltimore Gas and Electric Company (BGE), its regulated utility in Central Maryland.

SOURCE Constellation Energy