As an Exelon company, Constellation Energy is part of one of the biggest — and historically most polluting — corporations in North America. Given Exelon’s vast production energy, ranking on the PERI Toxic 100 list is perhaps not that surprising. The good news is that Exelon is upfront about its room for eco-friendly improvement and make it easy for Constellation customers to go green, too.
Ameren Illinois is the only company that delivers electricity to Champaign residents (Ameren Illinois, 800-755-5000). However, there are many retail electric suppliers who supply electricity. Residents may choose to receive their supply from Ameren or another provider, residents are encouraged to research before choosing a supplier. Visit this page on the Ameren site for more details.
It’s worth noting that you can switch for free with no exit fee 42-49 days before the end of your contract. Under Ofgem’s standards of conduct, energy firms have to give you between 42 and 49 days’ notice of your tariff ending. You can use this time to decide whether to stick with them, or switch. If you decide to switch, you won’t be charged an exit fee.