The California Public Utility Commission (“CPUC”) recently announced that it will reopen the Rule 21 Working Group. Rule 21 governs the interconnection of distributed generation to a utility’s distribution system.

Each of the three largest investor-owned utilities—Pacific Gas and Electric, Southern California Edison, and San Diego Gas and Electric—have a version of Rule 21 in their electric tariffs, which are subject to approval by the CPUC. The last Rule 21 workshop was held in 2008. The CPUC stated that, given the substantial changes in the technical and regulatory landscape in the past several years, Rule 21 is in need of reconsideration and has set forth a list of issues it believes should be addressed by the new Working Group. These include:

  • The need for transparency in processing, queue information, and customer application information
  • The need for review and potential reconsideration of technical screens within Rule 21 to ensure that the appropriate issues are being studied
  • The need for articulation of cost-allocation methodology when network upgrades are required
  • The need for review of utility tariffs for consistency with each other and with state law
  • The need for additional standard interconnection agreements to accommodate the different types of distributed generation projects anticipated to come online

The first meeting of the Rule 21 Working Group will be Friday, April 29, 2011 from 10:00 a.m. to 3:00 p.m. at the Auditorium of the CPUC located at 500 Van Ness Avenue, San Francisco, CA.