Solar Lattice

Mitigation

Battery charging strategy tuning

ID
mit:bess-charging-strategy
IRI
https://solarlattice.org/kb/mit/bess-charging-strategy
Status
active

Battery charging strategy tuning means adjusting how a co-located battery charges so that it captures PV energy that would otherwise be curtailed. It applies to grid curtailment yield losses at PV-plus-storage sites, and only where a battery is present. Curtailed energy can be partly recovered through DC-coupled or AC-coupled battery charging. This works only if the battery has spare capacity and power headroom, its controls allow charging, and its operating objective gives value to the charge. Before tuning, rebuild available power from irradiance and plant data, then sort each constrained interval by cause, including battery charging limits. At storage sites, track whether curtailed PV energy was charged, clipped or abandoned, so you can see what the charging strategy recovers. Charging strategy tuning does not remove the curtailment itself, so it should go together with tracking curtailment separately and using curtailment-aware performance metrics.

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