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The National Renewable Energy Laboratory ("NREL") recently announced the release of the "Western Wind and Solar Integration Study"  (the "WWSIS"), which investigated the operational impact of up to 35% energy penetration of wind, photovoltaic, and concentrating solar power on the power system operated by the WestConnect group of utilities in Arizona, Colorado, Nevada, New Mexico and Wyoming.  The WestConnect group includes the following:  Arizona Public Service, El Paso Electric Co., NV Energy, Public Service of New Mexico, Salt River Project, Tri-State Generation and Transmission Cooperative, Tucson Electric Power, Western Area Power Administration, and Xcel Energy.

The WWSIS was prepared by GE Energy and conducted over two and a half years by a team or researchers in wind power, solar power, and utility operations.   The WWSIS was designed to answer questions that utilities, Public Utility Commissions, developers, and regional planning organizations had about renewable energy use in the West, such as:

  • What is the operating impact of up to 35% renewable energy penetration and how can this be accommodated?
  • How does geographic diversity help to mitigate variability?
  • How do local resources compare to remote, higher quality resources delivered by long distance transmission?
  • Can balancing area cooperation mitigate variability?
  • How should reserve requirements be modified to account for the variability in wind and solar?
  • What is the benefit of integrating wind and solar forecasting into grid operations?
  • How can hydro generation help with integration of renewables?

Continue Reading Release of the “Western Wind and Solar Integration Study”

The Washington State Department of Commerce (formerly the Department of Community, Trade and Economic Development or CTED) has announced that it is attempting to revise Washington’s comprehensive energy plan (the “State Energy Strategy”). 

The State Energy Strategy was last revised in 2003, and it does not serve current energy realities and forecasts. Therefore, the Washington State Legislature has tasked the Department of Commerce with updating the State Energy Strategy while taking account the following three goals and nine principles:Continue Reading Washington Revising its State Energy Strategy

The California Public Utilities Commission ("CPUC") has given the green light to a five-year solar photovoltaic program to develop up to 500 MW of solar PV facilities in Pacific Gas and Electric Co.’s ("PG&E") service area.

The program is designed to allow PG&E and third parties to develop PV facilities:

  • Under the utility-owned part of the program, PG&E may install

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On March 12, 2010, the Arizona Game and Fish Department ("AGFD") released finalized guidelines for solar development in Arizona ("Solar Guidelines"), the objective of which "is to assist energy developers in identifying potential impacts to wildlife and wildlife habitats from their proposed development and potential alternatives to avoid, minimize, and/or mitigate for these negative impacts."  The AGFD encourages local governments and permitting authorities to integrate the recommended study proposals described in the Solar Guidelines.  The document is organized around five basic project development steps:

  1. Wildlife Protection Regulations
  2. AGFD Regulations and Review
  3. Gather preliminary information and conduct site screening
  4. Identify potential impacts to wildlife
  5. Mitigation

The Solar Guidelines were compiled by the AGFD employees and have not undergone any external public review or input from the solar energy industry.  It should be noted that some of the information contained in the Solar Guidelines was taken from the AGFD’s wind guidelines.  In light of the fact that county officials often defer to the AGFD in matters of wildlife concerns, special attention should be given to the section of the Solar Guidelines focused on "Avoiding or Minimizing Impacts" and the recommendations contained therein.Continue Reading Solar Development Guidelines Released by Arizona Game and Fish Department

On Thursday March 11, 2010, the California Public Utility Commission (the "CPUC") created a market for tradable renewable energy credits ("TRECs") in the state.  That’s big news.  In its 149-page decision, the CPUC stated that investor-owned utilities ("IOUs"), energy service providers, and community choice aggregators may now use TRECs to comply with California’s ambitious renewable portfolio standard ("RPS").  These entities are now permitted to purchase a portion of their RPS compliance from generation sources other than those they own (e.g., distributed solar generation facilities within the state and certain out-of-state facilities).

Continue Reading Tradable RECs Now Count Toward California’s RPS

Proposed legislation in the Senate would greatly limit the effectiveness of the grant in lieu of tax credits for renewable energy projects under section 1603 of the American Recovery and Reinvestment Act.

The section 1603 grant currently applies to renewable energy projects, such as wind, solar, geothermal and biomass, that are placed in service before…