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[California Energy Commission Letterhead]

Notice of Staff Workshop

Intermittency Analysis Project:
2006 Renewable Baseline and 2010 RPS Scenario Results

AGENDA - Posted August 8, 2006. (Acrobat File PDF 1pg. 16kb)

Proposed Presentation Outline - Posted August 8, 2006. (Acrobat File PDF 4 pgs 44kb)

The California Energy Commission Public Interest Energy Research (PIER) Program renewable energy research staff will conduct a workshop to present the preliminary findings and results, and to seek public comment on the Intermittency Analysis Project (IAP) 2006 Baseline and 2010 Projections.

*** Notice Time Change ***
9:00 a.m. to 5:00 p.m.

1516 Ninth Street
First Floor, Hearing Room A
Sacramento, California

(Wheelchair Accessible)

Audio from this meeting will be broadcast over the Internet.
For details, please go to:

Electronic copies of the agenda and workshop notice are available on the Energy Commission's web site at [www.energy.ca.gov/pier/notices/].


The purpose of this Staff Workshop is to present the IAP findings and preliminary results for the 2006 renewable baseline and the 20 percent renewables by 2010 Renewables Portfolio Standard, RPS, scenarios. As the first of two project workshops, this meeting will focus on:

  • Renewable portfolio scenarios (2010 - 20 percent renewables and 2020 - 33 percent renewables),

  • Resource locations and penetration levels,

  • Transmission upgrades, new development plans and assumptions, and

  • Hourly and sub-hourly system reliability, dispatchability and operational impacts under the developed 2010 - 20 percent renewables scenario.

The renewable portfolio accounts for energy production from all renewable sources throughout the state and has been developed in conjunction with California utilities and various transmission study groups. Transmission simulations, production estimates, impacts on the transmission system, system reliability, dispatchability and potential system cost impacts (i.e., value of forecasting) due to increasing 2010 and 2020 penetration will also be discussed. The staff welcomes public comments/feedback on process and results.

The findings and recommendations will be presented by an industry team, which has worked in close collaboration with representatives from California utilities, regional transmission study groups, industry stakeholders and state agencies, involved in transmission planning.


The Energy Commission's Intermittency Analysis Project (IAP) is focused on examining the statewide system impacts of higher levels of variable renewables on the California grid, and to recommend technical, operational and policy strategies for mitigating impacts based on world-wide experience.

The IAP group has been working with the California utilities (Pacific Gas and Electric, San Diego Gas & Electric, Los Angeles Department of Water and Power, Sacramento Municipal Utility District, Southern California Edison, and the Imperial Irrigation District), the California Public Utilities Commission, the California Independent System Operator, the Consortium for Electric Reliability Technology Solutions, the Center for Energy Efficiency and Renewable Technologies, the renewable industry, the California Wind Energy Collaborative and the Energy Commission's Transmission Planning and Siting offices to ensure coordination and review of results and findings from the IAP. Close coordination with the utilities will help ensure mitigation measures and impact studies are relevant to current system needs. Other technical advisors from industry such as the Utility Wind Integration Group and the National Renewable Energy Laboratory are also participating.

This study will provide quantified system and transmission impacts of variable or weather dependant renewable generation. Results will be useful to guide transmission management and investment decisions as well as prioritization of resource development needs.

Written Comments

Written comments on the workshop topics are due by 5:00 p.m. on August 29, 2006. The Energy Commission encourages comments by e-mail. Those submitting comments by electronic mail should provide them in either Microsoft Word format or as a Portable Document format (PDF) to dyen@energy.state.ca.us. Please include "IAP Comments" in the subject line or first paragraph of your comments. For comments by postal mail, please hand deliver or mail the original and one copy to:

California Energy Commission
Attn: IAP, Dora Yen-Nakafuji
1516 Ninth Street, MS-43
Sacramento, CA 95814-5512

Please include your name, organization and contact information on all correspondence. All written material related to this workshop will become part of the public record.

Public Participation

The Energy Commission's Public Adviser, Margret J. Kim, provides the public assistance in participating in Energy Commission activities. If you want information on how to participate in this forum, please contact the Public Adviser's Office at (916) 654-4489 or toll free at (800) 822-6228, by FAX at (916) 654-4493, or by e-mail at [pao@energy.state.ca.us]. If you have a disability and require assistance to participate, please contact Lou Quiroz at (916) 654-5146 at least five days in advance.

Please direct all news media inquiries to Claudia Chandler, Assistant Executive Director, at (916) 654-4989.

For technical questions on the project, please email Dora Yen-Nakafuji, Wind Energy Technical Lead at [dyen@energy.state.ca.us].

Mail Lists:
5503 Existing Renewables,
5504 New Renewables,
5506 Emerging Renewables,
5507 RPS
Transmission e-mail list server
Energy policy e-mail list server
Renewables e-mail list server

Date Posted: June 27, 2006

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