Earlier this week, the Environmental Protection Agency (EPA) updated each of its National Top Partner lists, highlighting some of America’s largest green power purchasers. Earlier this week, the Environmental Protection Agency (EPA) updated each of its National Top Partner lists, highlighting some of America’s largest green power purchasers. Southwest Airlines (Dallas & Houston Operations) currently ranks No. 32 on EPA’s Fortune 500 List. Each list highlights EPA Green Power Partners that have completed the largest annual voluntary purchases through July 7, 2009. EPA updates its Top Partner Lists quarterly at http://www.epa.gov/greenpower/toplists/. Southwest Airlines’ Dallas and Houston operations were recognized by the US EPA for its leading green power purchase and for its support and participation in the agency’s Fortune 500 Green Power Challenge. The Dallas and Houston operations are purchasing nearly 16 million kilowatt-hours (kWh) of green power, which is enough to meet 30 percent of the factilities’ purchased electricity use. Southwest Airlines’ Dallas and Houston operations are buying renewable energy certificates (REC) from Reliant Energy.