PUC §454.56: (a) The commission, in consultation with the Energy Commission, shall identify all potentially achievable cost-effective natural gas efficiency savings and establish efficiency targets for the gas cor

(a) The commission, in consultation with the Energy Commission, shall identify all potentially achievable cost-effective natural gas efficiency savings and establish efficiency targets for the gas corporation to achieve, consistent with the targets established pursuant to subdivision (c) of Section 25310 of the Public Resources Code. (b) A gas corporation shall first meet its unmet resource needs through all available natural gas efficiency and demand reduction resources that are cost effective, reliable, and feasible. (c) By July 1, 2018, and every four years thereafter, each gas corporation shall report on its progress toward achieving the targets established pursuant to subdivision (a). (d) Notwithstanding subdivision (c) of Section 25310 of the Public Resources Code, if the commission concludes in its review pursuant to paragraph (1) of subdivision (b) of Section 454.55 that the targets established for gas corporations to achieve pursuant to subdivision (a) are not cost effective, feasible, or pose potential adverse impacts to public health and safety, the commission shall revise the targets to the level that maximizes the amount of energy efficiency savings and demand reduction and shall modify, revise, or update its policies as needed to address barriers preventing achievement of those targets. (e) The commission shall ensure that there are sufficient moneys available to gas corporations to meet the efficiency targets established pursuant to subdivision (a). This subdivision shall not be construed to authorize the commission to impose or increase any tax.