Power is king for commercial batteries. On whole sale energy markets you often see high prices in one 1/4 hour, and much lower prices 1 hour later. You can than

Power is king for commercial batteries. On whole sale energy markets you often see high prices in one 1/4 hour, and much lower prices 1 hour later. You can than nicely make an arbitrage profit if you completely cycle the battery. Also many such batteries have similar Max energy and power limits, e.g. 1.5MWh energy vs 1MW power.