California Code, Public Utilities Code - PUC § 2840.6

(a) It is the intent of the Legislature that state policies dramatically advance the efficiency of the state's use of natural gas by capturing unused waste heat, and in so doing, help offset the growing crisis in electricity supply and transmission congestion in the state.

(b) It is the intent of the Legislature to reduce wasteful consumption of energy through improved residential, commercial, institutional, industrial, and manufacturer utilization of waste heat whenever it is cost effective, technologically feasible, and environmentally beneficial, particularly when this reduces emissions of carbon dioxide and other carbon-based greenhouse gases.

(c) It is the intent of the Legislature to support and facilitate both customer- and utility-owned combined heat and power systems.

(d) This article does not apply to, and shall not impact, combined heat and power systems in operation prior to January 1, 2008, or combined heat and power systems with a generating capacity greater than 20 megawatts.