California Code, Public Utilities Code - PUC § 740.3

(a) The commission, in cooperation with the Energy Commission, the State Air Resources Board, air quality management districts and air pollution control districts, regulated electrical and gas corporations, and the motor vehicle industry, shall evaluate and implement policies to promote the development of equipment and infrastructure needed to facilitate the use of electricity and natural gas to fuel low-emission vehicles. Policies to be considered shall include both of the following:

(b) The commission shall hold public hearings as part of its effort to evaluate and implement the new policies considered in subdivision (a).

(c) The commission's policies authorizing utilities to develop equipment or infrastructure needed for electricity-powered and natural gas-fueled low-emission vehicles shall ensure that the costs and expenses of those programs are not passed through to electrical or gas ratepayers unless the commission finds and determines that those programs are in the ratepayers' interest. The commission's policies shall also ensure that utilities do not unfairly compete with nonutility enterprises.