Every single energy supplier in the UK is regulated by Ofgem, the industry regulator. This means that the smaller, lesser-known companies have to follow exactly the same rules as the bigger, more established ones. If a company goes bust, you’ll be covered by Ofgem – they’ll ensure your supply isn’t cut off, and they’ll appoint a new supplier to take over your tariff.

We’ve done some of the work for you. We homed in on five of the biggest electric companies in Pennsylvania: Constellation Energy, Direct Energy, FirstEnergy Solutions, Green Mountain Energy, and Just Energy. We compared their plans, rates, special offers, and philanthropies, then dug into the contract fine print to uncover sneaky fees and the truth about discounts. Because most providers offer a range of options, we also looked at the companies behind the plans — paying attention to their corporate impact, customer service reputation, and customer resources in particular.
You’ll also see a flat rate and a price per kWh rate for TDU or TDSP (which stand for Transmission and Distribution Utility or Transportation Distribution Service Provider). These are costs that your utility charges for delivering electricity and maintaining power lines. The costs are unique to your local utility and have nothing to do with your electricity provider.
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