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[California Energy Commission Letterhead]

Notice of Staff Workshop
Intermittency Analysis Project:
Results from 2010 and 2020 Scenarios

AGENDA - Posted: January 30, 2007. (PDF file. 1 pgs. 20 kb)

The California Energy Commission Public Interest Energy Research renewables staff will be conducting a workshop to present the findings and results from the Intermittency Analysis Project (IAP). This final workshop will focus the analysis of the 2010 and 2020 renewable penetration scenarios.

9 a.m.- 5:30 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 website at www.energy.ca.gov/pier/notices/.

Participation through WebEx, the Energy Commission's on-line meeting service

To participate in the meeting using the WebEx onscreen and audio functions, please go to the following URL in your web browser on the date and time of the meeting:www.energy.ca.gov/pier/notices/

(If the link above does not work, go to: https://energy.webex.com/ and enter the meeting number: 923 989 955 .

When prompted, enter your information and the following meeting password: meeting@9am

Provide your phone number, when prompted, to receive a call back on your phone for the audio of the workshop. Alternatively, you can call 1-866-469-3239 (toll free in the U.S. and Canada).

If you have difficulty joining the meeting, please call the WebEx Technical Support number at 1-866-229-3239.

Participation through audio only

If you do not have computer access and wish to participate in the meeting by phone, you can call 1-866-469-3239 (toll free in the U.S. and Canada).

Please be aware that the workshop's WebEx audio and onscreen activity will be recorded.


The purpose of this Staff Workshop is to present the IAP findings and results for the 2010 - 20 percent and 2020 - 33 percent scenarios. The workshop is the second and final public workshop for the project. Presentations will focus on:

  • Process developed for locating in-state renewable resources and transmission to sustain 2010 - 20 percent and 2020 - 33 percent renewables.
  • Hourly and sub-hourly system reliability and operational impacts found under the developed 2010 - 20 percent and 2020 - 33 percent renewables scenarios.

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 and Renewable Portfolio Standards (RPS) issues.


The Energy Commission's 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 and 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 the industry such as the Utility Wind Integration Group and the National Renewable Energy Laboratory are also participating.

The IAP scenarios and datasets have been developed for all in-state renewable resources. The process also involved active participation by California utilities, various transmission study groups and industry stakeholders.

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 p.m. on Friday, February 23, 2007Wednesday, February 28, 2007. 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 e-mail Dora Yen-Nakafuji, Wind Energy Technical Lead at dyen@energy.state.ca.us.

Note: California Energy Commission's formal name is State Energy Resources Conservation and Development Commission.

Date Posted: January 24, 2007

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