Champion Energy Services, a subsidiary of Calpine Corporation (NYSE:CPN), has once again ranked highest in customer satisfaction among Texas residential retail electricity providers (REPs), according to the J.D. Power 2016 Electric Provider Retail Customer Satisfaction Study¿ released last week. This is the sixth time Champion Energy has received the top ranking in the past seven years. The J.D. Power study, conducted by surveying customers throughout the state, measures customer satisfaction with REPs across six factors: price, billing and payment, corporate citizenship, communications, enrollment/renewal and customer service. Champion Energy's overall satisfaction score of 793 is the highest overall score of any ranked Texas REP since the study began. "This ranking validates our belief in the strength of the Champion Energy brand," said Trey Griggs, Executive Vice President and Chief Commercial Officer at Calpine Corporation. "Through their focus on an exceptional customer experience, the team at Champion has built a strong platform for additional growth." "In today's economy, customer loyalty can never be taken for granted," said Michael Sullivan, Champion Energy's CEO. "I am privileged to lead a team of hard working employees who deliver excellent service and results year after year. It's this culture of customer satisfaction that has earned Champion Energy this unparalleled reputation in the market." About the J.D. Power Study Champion Energy Services received the highest numerical score among 20 ranked residential electric service providers in Texas in the J.D. Power 2016 Retail Electric Provider Residential Customer Satisfaction Study¿. Study based on responses from 5,900 consumers, measuring the opinions of consumers who recently switched electric service providers. Results are based on experiences and perceptions of consumers surveyed between August 2015 and June 2016. Your experiences may vary. Visit jdpower.com. About Champion Energy Services Champion Energy Services, a subsidiary of Calpine Corporation (NYSE: CPN), is one of the fastest-growing and largest retail electric providers in the United States. Champion Energy serves residential, governmental, commercial and industrial customers in deregulated electric energy markets across the U.S. Champion Energy serves more than 2 million residential customer equivalents, with a peak load near 4,000 megawatts. Champion Energy's growth is driven by competitive, straightforward pricing and a reputation for maintaining the highest levels of satisfaction with its customers. For more information, visit https://www.champion.energy.