The effect of short term storage operation on resource adequacy

Journal article (2023)

Authors

Sebastian Gonzato Katholieke Universiteit Leuven
K. Bruninx Katholieke Universiteit Leuven, Energy and Industry
Erik Delarue Katholieke Universiteit Leuven
Research Group
Energy and Industry
Copyright: © 2023 Sebastian Gonzato, K. Bruninx, Erik Delarue
DOI: https://doi.org/10.1016/j.segan.2023.101005
Capacity remuneration mechanisms Security of supply Electricity storage Adequacy assessments Capacity credits Resource adequacy
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Published Date

2023

Language

English

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Research Group

Energy and Industry

Abstract

The potential contribution of short term storage technologies such as batteries to resource adequacy is becoming increasingly important in power systems with high penetrations of Variable Renewable Energy Sources (VRES). However, unlike generators, there are multiple ways in which storage may be operated to contribute to resource adequacy. We investigate storage operational strategies which result in the same amount of Expected Energy Not Served (EENS) but differing Loss of Load Expectation (LOLE) to investigate the range of LOLE possible and what factors affect this range. A case study of a Belgium-like power system using an economic dispatch model, typical of state-of-the-art adequacy assessments, results in a LOLE ranging between 2 and 6 h/yr, with the difference decreasing for greater storage duration and increasing for higher installed capacities of storage. Capacity Credits (CCs), which give the relative contribution of a resource to system adequacy, may also be affected by storage operation and the CC of storage is shown to differ by up to 30% depending on the operation and how the CC is calculated. Given these findings, it is recommended that modellers be explicit and transparent about the storage operation they assume in adequacy assessments and capacity credit calculations.