RCWG Update to WMS

March 13, 2013

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General Update Agenda Items for Today:

Incorporate NPRR 511 changes into the VC Manual (no vote) Long Term Fuel Cost Solution for Fuel Adder (no vote)

Other Items NPRR 385 – Impact Test to CMWG Load Providing Capacity – Tabled

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Incorporate NPRR 511 Changes into VC Manual

Reviewed language changes in VC Manual related to NPRR 511

Luminant suggested:

NPRR 511 tabled at

TAC, so WMS needs toensure VCM changes match direction takenwith NPRR 511.

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Long Term Fuel Cost Solution for Fuel Adder

Exploring the solution that would allow Generators to be compensated for fuel costs in their Mitigated Offer Cap.

Interim solution would be to provide generic fuel costs on a monthly basis

Longer term solution to provide individual costs, perhaps as often as daily

ERCOT exploring ability to implement NPRR 485 at least for generic fuel costs on a nearer-term basis.

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