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

SB 1837 establishes rules for electric utilities during rate suspension periods when a proposed rate change is under review. It allows utilities to implement interim rates not exceeding the proposed rate, requires 45 days' notice to retail providers, and mandates refunds for overcollections or surcharges for undercollections. The bill directly affects Texas electric utilities operating within ERCOT and retail electric providers in their service areas. Key provisions include prohibiting regulators from considering certain costs (like legislative advocacy) in rate decisions and setting a 155-day timeline for final rate implementation after filing. This bill amends Texas Utilities Code Sections 36.062 and 36.1091.