RRRP q, m MW Responsive Reserve capacity that was a 1 / hour Yes Responsive Reserve Replacement per QSE per market—The portion of the Ancillary Service Supply Responsibility of QSE but is replaced in the market for q m, the hour. RTRRAMT q $ adjustment to QSE share of the costs for 1 / hour Calculated Yes Real-Time Responsive Reserve Amount per QSE—The q’s Responsive Reserve, for the hour. DARRAMT q $ share of the DAM cost for Responsive 1 / hour Calculated Yes Day-Ahead Responsive Reserve Amount per QSE—QSE q’s Reserve, for the hour. Non-Spin Description Each QSE, on whose behalf ERCOT purchases Ancillary Service capacity in the DAM and SASMs (if any), is charged for its net share of the costs ERCOT incurred for each service. For each such QSE, its share of the DAM costs has been calculated in Section 4.6.4, Settlement of Ancillary Services Procured in the DAM; its share of the net total costs incurred in both DAM and SASMs less its DAM charge is calculated in the following three sections. The net total costs for Non-Spin for a given Operating Hour is calculated as follows: The Procured Capacity for Non-Spin Amount Total per Market is summed across all markets, including the Day-Ahead Market and the Supplemental Ancillary Service Markets, and then summed with the Failure to Provide Non-Spin Capacity Amount Total to determine the total cost, ERCOT-Wide for each hour of the Operating Day. Calculation Unit Description Interval Source Variable Frequency NSCOSTTOT $ net total costs for Non-Spin for the hour. 1 / hour Yes Non-Spin Cost PCNSAMTTOT m $ total payments to all QSEs for the 1 / hour Yes Procured Capacity for Non-Spin Amount Total by market—The Ancillary Service Offers cleared in the market for Non-Spin, for the hour. m PCNSAMT q, m $ payment to QSE for its Ancillary 1 / hour Yes Procured Capacity for Non-Spin Amount per QSE by market—The q Service Offers cleared in the market for Non-Spin, for the hour. m
RRRP q, m MW Responsive Reserve Replacement per QSE per market—The Responsive Reserve capacity that was a portion of the Ancillary Service Supply Responsibility of QSE q but is replaced in the market m, for the hour. 1 / hour Yes RTRRAMT q $ Real-Time Responsive Reserve Amount per QSE—The adjustment to QSE q’s share of the costs for Responsive Reserve, for the hour. 1 / hour Calculated Yes DARRAMT q $ Day-Ahead Responsive Reserve Amount per QSE—QSE q’s share of the DAM cost for Responsive Reserve, for the hour. 1 / hour Calculated Yes Non-Spin Description Each QSE, on whose behalf ERCOT purchases Ancillary Service capacity in the DAM and SASMs (if any), is charged for its net share of the costs ERCOT incurred for each service. For each such QSE, its share of the DAM costs has been calculated in Section 4.6.4, Settlement of Ancillary Services Procured in the DAM; its share of the net total costs incurred in both DAM and SASMs less its DAM charge is calculated in the following three sections. The net total costs for Non-Spin for a given Operating Hour is calculated as follows: The Procured Capacity for Non-Spin Amount Total per Market is summed across all markets, including the Day-Ahead Market and the Supplemental Ancillary Service Markets, and then summed with the Failure to Provide Non-Spin Capacity Amount Total to determine the total cost, ERCOT-Wide for each hour of the Operating Day. Calculation Variable Unit Description Interval Frequency Source NSCOSTTOT $ Non-Spin Cost net total costs for Non-Spin for the hour. 1 / hour Yes PCNSAMTTOT m $ Procured Capacity for Non-Spin Amount Total by market—The total payments to all QSEs for the Ancillary Service Offers cleared in the market m for Non-Spin, for the hour. 1 / hour Yes PCNSAMT q, m $ Procured Capacity for Non-Spin Amount per QSE by market—The payment to QSE q for its Ancillary Service Offers cleared in the market m for Non-Spin, for the hour. 1 / hour Yes
Nodal_Settlements_Handbook.docx