Researchers correct grid peak load estimates for household battery charging under real-time electricity pricing
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Researcher Lion Hirth released a paper pointing out that previous studies treated wholesale electricity prices as exogenous variables unaffected by charging behavior, overestimating the peak load increase on local distribution grids caused by synchronized household batteries under real-time pricing. The paper's calculations show that under the exogenous price assumption, synchronized charging would push the coincident import peak of the local grid up to 83% above the no-battery baseline; however, under the endogenous price assumption that accounts for charging behavior's reverse impact on wholesale prices, the charging behavior of the same set of batteries actually reduces the peak by 6% below the no-battery baseline. This conclusion remains robust across 20 scenario variants, three types of historical years, and different peak measurement methods.
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- arXiv q-finarXiv Paper: Overestimated Impact of Synchronized Home Batteries on Local Grid Peaks Under Real-Time Pricing
A paper by Lion Hirth published on arXiv points out that existing studies treat wholesale electricity prices as exogenous, overestimating the extent to which synchronized home batteries raise peak load on local distribution networks under real-time pricing.
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