The generator inlet air temperature is 40

If the engine room temperature exceeds 40°C (104°F), the generator must be derated per the generator derate schedule and cool outside air must be ducted directly to the generator air intake. [pdf]
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Price per kwh of energy storage lithium battery

In 2022, volume-weighted price of lithium-ion battery packs across all sectors averaged $151 per kilowatt-hour (kWh), a 7% rise from 2021 and the first time BNEF recorded an increase in price. [pdf]

Solar energy storage power supply 1 kWh

If the PV system has an output of 1 kW for one hour, it has generated an amount of energy equal to 1 kilowatt hour. The storage unit will be charged after a few hours even in suboptimal weather. [pdf]