Disclaimer: Green Mountain Energy received the highest numerical score among residential electric service providers in Texas in the proprietary J.D. Power 2014 Retail Electric Provider Residential Customer Satisfaction StudySM. Study based on responses from 19,471 consumers measuring 18 providers in Texas and measures opinions of consumers who recently switched electric service providers. Proprietary study results are based on experiences and perceptions of consumers surveyed between September 2013 - June 2014. Your experiences may vary. Visit jdpower.com * Same-day electricity service is available at no additional cost. Monday through Saturday by phone at 866-484-8409 or online. The request must be received prior to 4 p.m. that day.