Impact Analysis of Utility-Scale Energy Storage on the ERCOT Grid in Reducing Renewable Generation Curtailments and Emissions

TL;DR

This study analyzes how utility-scale energy storage can reduce renewable energy curtailments and CO2 emissions in the ERCOT grid by 2033, emphasizing strategic integration of storage with renewable projects.

Contribution

It provides a comprehensive projection of renewable integration and storage impact in ERCOT from 2023 to 2033, highlighting strategies to minimize emissions and optimize renewable utilization.

Findings

Storage reduces renewable curtailments significantly.

Strategic storage deployment enhances renewable energy utilization.

CO2 emissions are substantially lowered with storage integration.

Abstract

This paper explores the solutions for minimizing renewable energy (RE) curtailment in the Texas Electric Reliability Council of Texas (ERCOT) grid. By utilizing current and future planning data from ERCOT and the System Advisor Model from the National Renewable Energy Laboratory, we examine how future renewable energy (RE) initiatives, combined with utility-scale energy storage, can reduce CO2 emissions while reshaping Texas's energy mix. The study projects the energy landscape from 2023 to 2033, considering the planned phase-out of fossil fuel plants and the integration of new wind/solar projects. By comparing emissions under different load scenarios, with and without storage, we demonstrate storage's role in optimizing RE utilization. The findings of this paper provide actionable guidance for energy stakeholders, underscoring the need to expand wind and solar projects with strategic storage solutions to maximize Texas's RE capacity and substantially reduce CO2 emissions.