Have you ever had someone knock on your door, ask to see your electric bill and then promise you a better deal? There's a good chance this was a competitive energy supplier, and this so-called "deal" may cost you in the long run.

Today, WBUR Senior Climate and Environment Reporter Miriam Wasser joins The Common to take us through the first piece in her three-part series looking into competitive electric suppliers and the vulnerable communities they harm the most.

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