Transmission for a 33 rps
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Transmission for a 33% RPS. Keith E. Casey Vice President Market and Infrastructure Development California ISO The Independent Energy Producers Association 29 th Annual Meeting South Lake Tahoe, California September 22-24, 2010. Planning for a 33% RPS. Where are we and what is left?

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Transmission for a 33% RPS

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Transmission for a 33 rps

Transmission for a 33% RPS

Keith E. Casey

Vice President

Market and Infrastructure Development

California ISO

The Independent Energy Producers Association

29th Annual Meeting

South Lake Tahoe, California

September 22-24, 2010


Planning for a 33 rps

Planning for a 33% RPS

  • Where are we and what is left?

  • How do we plan effectively?


Transmission for a 33 rps

Calculating the “33% RPS Net-Short”

Numbers based on CTPG Phase 2 Study


Approved transmission projects could potentially achieve the 33 rps if fully utilized

Approved transmission projects could potentially achieve the 33% RPS if fully utilized.

Net-Short = 53 TWh


Transmission for a 33 rps

Base case plan will heavily utilize new transmission facilities.

  • Base case – Generation projects with approved PPAs or in CAISO interconnection queue.


Approved transmission provides a base case for evaluating supplemental needs

Approved transmission provides a base case for evaluating supplemental needs.

  • Alternative resource scenarios might be desirable if

    • Reduce generation procurement costs

    • Can be developed more expeditiously (siting/land-use issues)

    • Provide integration benefits through regional diversity

  • Additional resource scenarios include:

    • Higher Out-of-State scenario (e.g., RECs)

    • Higher distributive generation scenario

  • Potential benefits of different resource procurement scenarios needs to be weighed against any incremental transmission costs.


Next steps

Next Steps

  • December 2, 2010 - ISO stakeholder meeting to review draft results of its 33% RPS transmission studies.

  • January 2011 – Draft report issued

  • January 2011 (or sooner) – FERC Order on CAISO revised transmission planning process.

  • March 2011 – ISO releases its 2011 Annual Transmission Plan


California iso proposed comprehensive revisions to its transmission planning process

California ISO proposed comprehensive revisions to its transmission planning process.

  • New criterion for “policy-driven” transmission to achieve 33% renewable energy by 2020

  • Statewide planning approach

  • Whole system planning instead of single-project approach for a comprehensive transmission plan

  • Comprehensive planning process for addressing:

    • Reliability,

    • Generation interconnections,

    • Policy-driven (i.e., RPS mandates), and

    • Economics


Ferc notice of proposed rulemaking regarding transmission planning and cost allocation

FERC notice of proposed rulemaking regarding transmission planning and cost allocation

  • Five areas of “deficiency”

    • Lack of requirement for regional plan

    • Lack of consideration for needs driven by federal and state policy

    • Obstacles to non-incumbent transmission providers

    • Lack of coordination between regions

    • Deficient cost allocation methodologies


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