The Levelised Cost of Frequency Control Ancillary Services in Australia's National Electricity Market

Joel Gilmore, Tahlia Nolan and Paul Simshauser ()

Cambridge Working Papers in Economics from Faculty of Economics, University of Cambridge

Abstract: Over the period 2016-2021 Australia's National Electricity Market (NEM) experienced an investment supercycle, with 16,000MW of new utility-scale variable renewable plant commitments (and an additional 8,000MW of rooftop solar PV) in a power system with a ratcheted peak demand of 35,000MW. The sharp rise in intermittent asynchronous resources and the disorderly loss of 5,000MW of synchronous coal-fired generation plant placed strains on system security - most visibly represented by the rapid deterioration in the distribution of the power systems' (50Hz) Frequency. This in turn necessitated material changes to the NEM's suite of Frequency Control Ancillary Service (FCAS) markets. Utility-scale batteries are ideally suited for FCAS duties, but unlike the wholesale electricity market, there is no forward price curve for Frequency Control Ancillary Services, nor is there any systematic framework for determining equilibrium prices that might otherwise be used for investment decision-making. In this article, we develop an approach for quantifying long run equilibrium prices in the markets for Frequency Control Ancillary Services, with the intended application being to guide the suitability of utility-scale battery investments under conditions of uncertainty and missing forward FCAS markets.

Keywords: Frequency control ancillary services; electricity markets; battery storage (search for similar items in EconPapers)
JEL-codes: D25 D80 G32 L51 Q41 (search for similar items in EconPapers)
Date: 2022-01-10
New Economics Papers: this item is included in nep-ene and nep-reg
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Working Paper: The Levelised Cost of Frequency Control Ancillary Services in Australia’s National Electricity Market (2022)
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Persistent link: https://EconPapers.repec.org/RePEc:cam:camdae:2203

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