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arXiv · 2603.13678

Peak-Load Pricing and Investment Cost Recovery with Duration-Limited Storage

Abstract

Energy storage shifts energy from off-peak periods to on-peak periods. Unlike conventional generation, storage is duration-limited: the stored energy capacity constrains the duration over which it can supply power. To understand how these constraints affect optimal pricing and investment decisions, we extend the classic two-period peak-load pricing model to include duration-limited storage. By adopting assumptions typical of solar-dominated systems, we link on- and off-peak prices to storage investment costs, round-trip efficiency, and the duration of the peak period. The bulk of the scarcity premium from on-peak prices is associated with the fixed costs of storage as opposed to variable costs stemming from round-trip efficiency losses. Unlike conventional generators, the binding duration constraints lead storage to recover energy capacity costs on a per-peak-event basis instead of amortizing these costs over total peak hours. A numerical example illustrates the implications for equilibrium prices and capacity investment.

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BibTeXRIS

Daniel Shen, Marija Ilic, John Parsons. 2026-03-14. Peak-Load Pricing and Investment Cost Recovery with Duration-Limited Storage. https://arxiv.org/abs/2603.13678

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