Understanding ERCOT NPRR 1043 and Non-WSL Energy Storage Resources
Learn about ERCOT NPRR 1043 which ensures Energy Storage Resources are settled at nodal prices, and understand scenarios where Non-WSL treatment applies. Dive into the details of how charging Load is managed under NPRR 1043 and the implications for stakeholders in the energy sector.
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Presentation Transcript
NPRR 1043 Overview ERCOT Staff BESTFORCE Sept. 11, 2020
NPRR 1043, Clarification of NPRR 986 Language Related to Wholesale Storage Load Main purpose of the ERCOT-sponsored NPRR is to ensure that Energy Storage Resources (ESRs) are settled at nodal prices for discharging and charging regardless of WSL treatment NPRR replaces the term ESR Load that is not WSL with the term Non-WSL ESR Charging Load This ensures nodal pricing for ESRs that are not receiving WSL treatment 2 PUBLIC
Non-WSL ESRs Preamble to PUC Rulemaking in Project 39917 contemplates that WSL should be optional There are 3 scenarios in which an ESR would not receive WSL treatment: 1. The Resource Entity elects not to request WSL 2. The ESR s charging Load cannot be separately metered or separately measured via sensors (per NPRR 1020) 3. The ESR forfeits its WSL status by failing to submit valid annual paperwork per NPRR 1020 3 PUBLIC
Non-WSL ESRs If the ESR is able to isolate its charging Load but chooses not to request WSL treatment, metered charging Load will be settled at nodal but (unlike WSL) will be subject to Load Ratio Share-based charges If the ESR is unable to isolate its charging Load via separate metering or NPRR 1020-style sensors, a default percentage will be applied to identify charging Load NPRR 1043 proposes a ratio of 85% charging Load to 15% auxiliary Load ERCOT seeks stakeholder input on the proper ratio 4 PUBLIC
Questions? 5 PUBLIC
