Relating to interim rates charged by electric utilities during a rate suspension period.

HB 3157 allows electric utilities in Texas to implement temporary rates during a rate review period, provided the rates do not exceed the originally proposed rate. Utilities must notify retail electricity providers in their service area at least 45 days before the temporary rate takes effect and must refund excess payments or add surcharges to recover shortfalls if the final approved rate differs. The bill directly affects electric utilities operating within the ERCOT grid and retail electricity providers. It applies only to rate proceedings initiated after the law's effective date, repealing prior provisions about interim rate handling.