Market securitization charges are a new line item on Texas electricity bills. They’re a direct outcome of Winter Storm Uri, paying for some of the extraordinary costs of that storm.
The Texas legislature passed House Bill (HB) 4492 in 2021 in response to the storm’s financial impact on the ERCOT power region. The legislation allows Texas REPs to add the charge to their bills for the next 30 years
You can’t avoid paying these fees, which are from a regulatory change. But you might as well understand them, since you’ll be paying them for the next 3 decades.