Switching electric suppliers is a legit thing, and can save you a bit of money, or get you renewable/green power if that's important.
But the way to do it is to go to this website. https://www.papowerswitch.com. Just tell the solicitor that's how you choose your energy supplier. They may claim they have a lower rate than the web site is showing, but I guarantee you it's like $.001 /kWh.
Even at the website, watch out for:
--variable rates (they could rize quickly)
--cancellation fees
--fixed rate for X months (after which the rates skyrocket)
--monthly fees above the rate per kWh
Best approach is to find a good rate that allows you to switch with no cancellation fees, or a very short term, and keep track of the rates. If you're not willing to keep track of it, your best bet is stick with the default supplier from DLC. Those rates are regulated by the PUC.