Click on the energy companies below to read customer reviews: Best Worst Worst Best A Z Energy Companies : Best to Worst Company Ranking Rating (0-5) Stars Spark Energy 1 3.8 Public Power 2 3.56 Green Mountain Energy 3 3.44 Constellation 4 3.35 Direct Energy 5 3.34 North American Power 6 3.21 Abest Power & Gas 7 3 Aequitas Energy 8 3 4 Choice Energy 9 3 Clearview Energy 10 3 conEdison Solutions 11 3 Discount Power Inc. 12 3 Think Energy 13 3 Hiko Energy 14 3 Perigee Energy 15 3 Starion Energy 16 3 Sunwave Gas & Power 17 3 Town Square Energy 18 3 Verde Energy 19 3 Viridian Energy 20 3 XOOM Energy 21 3 Energy Rewards 22 3 Cirro Energy 23 2.78 Ambit Energy 24 2.57 Agera Energy 25 2.57 Liberty Power 26 2.21 Mega Energy 27 2.03 Energy Companies : Worst to Best Company Ranking Rating (0-5) Stars Mega Energy 1 2.03 Liberty Power 2 2.21 Ambit Energy 3 2.57 Agera Energy 4 2.57 Cirro Energy 5 2.78 Abest Power & Gas 6 3 Aequitas Energy 7 3 4 Choice Energy 8 3 Clearview Energy 9 3 conEdison Solutions 10 3 Discount Power Inc. 11 3 Think Energy 12 3 Hiko Energy 13 3 Perigee Energy 14 3 Starion Energy 15 3 Sunwave Gas & Power 16 3 Town Square Energy 17 3 Verde Energy 18 3 Viridian Energy 19 3 XOOM Energy 20 3 Energy Rewards 21 3 North American Power 22 3.21 Direct Energy 23 3.34 Constellation 24 3.35 Green Mountain Energy 25 3.44 Public Power 26 3.56 Spark Energy 27 3.8 Energy Companies : By Name Company Ranking Rating (0-5) Stars 4 Choice Energy 1 3 Abest Power & Gas 2 3 Aequitas Energy 3 3 Agera Energy 4 2.57 Ambit Energy 5 2.57 Cirro Energy 6 2.78 Clearview Energy 7 3 conEdison Solutions 8 3 Constellation 9 3.35 Direct Energy 10 3.34 Discount Power Inc. 11 3 Energy Rewards 12 3 Green Mountain Energy 13 3.44 Hiko Energy 14 3 Liberty Power 15 2.21 Mega Energy 16 2.03 North American Power 17 3.21 Perigee Energy 18 3 Public Power 19 3.56 Spark Energy 20 3.8 Starion Energy 21 3 Sunwave Gas & Power 22 3 Think Energy 23 3 Town Square Energy 24 3 Verde Energy 25 3 Viridian Energy 26 3 XOOM Energy 27 3