This bill establishes a prohibition on public utilities from filing requests for rate increases during specific circumstances. The Board of Public Utilities (board) will not consider or approve such requests if it has directed the utility to file a base rate case to assess whether it has exceeded its authorized rate of return, or if the board is investigating the same issue. This prohibition remains in effect until the board concludes the base rate case or investigation.

Additionally, the bill amends existing legal language regarding the board's authority over public utility rates. It clarifies that the board may require public utilities to submit complete schedules of rates and charges, and it outlines the process for fixing just and reasonable rates. The amendments also specify the board's powers in determining the reasonableness of any rate increases or changes, including the burden of proof resting on the public utility. The bill aims to ensure that rate increases are justified and that the board has the necessary oversight during investigations or proceedings related to rate returns.