California ISO

Market and Administrative Charges

Many specific charge type categories are used within ISO settlements and invoice processes according to a Market Participant's involvement in the ISO Markets.

Grid Management Charge (GMC)
Settlement Charge Type Prices - Prior to 01-Apr-2009
Start-Up Fuel Costs
Transmission Access Charge (TAC)
Charges assessed, on behalf of the Participating Transmission Owner, to parties who require access to the ISO Controlled Grid.
WECC NERC/ERO Costs
Wheeling Access Charges

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