Constellation

Constellation traces back to 1999 when Baltimore Gas and Electric created it as a holding company. They were acquired by Exelon in 2012, then spun off as an independent company in 2022. Today they're one of the nation's largest clean energy producers. The 90-day satisfaction guarantee is their headline feature—and it's real. Sign up, try them for three months, cancel without penalty if you're not happy. Fine print: this only applies to fixed-rate plans and is NOT valid in Texas, Connecticut, or Illinois. They earn high marks on OH Energy Ratings (4.47/5, Top Provider designation) and have a BBB A+ rating. However, their BBB customer reviews tell a different story—1.14 out of 5 stars, with complaints about rates higher than expected. After 90 days, the $100-150 early termination fee kicks in.

Rates tend to run 9.89¢ to 10.99¢ per kWh in Ohio. That's not the cheapest you'll find, but it's not outrageous either. What you're really paying for is the safety net. The 90-day guarantee, the established company, the app that doesn't crash. Some people are happy to pay a bit more for that. They've got fixed rates (12, 24, 36 months), variable rates, green energy options, and some kind of rewards program. Most people just want the fixed rate, but the options are there if you care about that stuff.

Customer service is decent. Phone lines have extended hours, there's live chat, and their mobile app handles most account stuff without needing to talk to anyone. When you do need to call, wait times are reasonable. Not amazing, but not the hour-long holds you get with some companies. The 90-day guarantee tells you something about how they think about customer service. If they weren't at least okay, they couldn't afford to let people walk away that easily.