As the leading producer of nuclear energy, the U.S. has some of the world’s cheapest electricity—which for the industrial sector averages between 6.75  and 9.33 cents per kWh. These prices are either trumped or competitive with other nuclear power-producing countries such as Russia ($0.11 cents per kWh), Canada ($0.10) and China ($0.08). India, which doesn't quite make it into the top 10, generates 30 billion kWh annually at an average of $0.08 cents per kWh.
Ironically, technology can make the utilities’ problem worse, not better—at least in the short term. In the past, grids were developed because it was cheaper to generate large quantities of power and distribute it over wide distances, rather then generate smaller quantities closer to the place of use. It is for this reason that electricity is seen as a business that benefits from “economies of scale”.
If you spend most of your leisure time out of the house, none of these plans will do much for your bottom line. But if home is your favorite place to be, you could profit. Based on the estimates of energy companies, most people use about 31% of their total energy on the weekends. If you go through the average 1,000 kWh per month, you'll get about 310 kWh for free. Using data compiled by the EIA, we estimated 30% of average total energy is also used during evenings (including weekend evenings), working out to about 300 free kWh.

Of FirstEnergy’s two plans, “Residential Fixed Price” (July 2019) and “Residential Fixed Price” (July 2020), the longer term contract comes with a reduced rate, per usual. If you’re hesitant to enter into a lengthy commitment because you’re planning to move within the next year or two, it’s nice to know that FirstEnergy builds a moving loophole into its cancellation policy. If you’re changing addresses and FirstEnergy does not service your new neighborhood, it doesn’t levy a cancellation fee. Opting out for any other reason comes with a $50 fee, cheaper than any other flat-rate cancellation fee we’ve seen. In fact, it might still be cheaper to go with the longer contract if you aren’t sure when you’ll move, or whether you can take your FirstEnergy service with you.
To be clear, no matter fuel portfolio of the plan you choose, your electricity’s make-up will be identical to your neighbors’. Depending on where you live, that could a mix of renewable and fossil fuels. Certificates offset your electricity use by putting an equal amount of clean energy into the electricity grid. If a plan is 100% renewable, that means it’s 100% offset with certificates.
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.
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.