Do the software consider the degradation of energy storage when calculating the return on investment? I updated the DOD of the battery's discharge cycle in the settings. Also, could you clarify what 'SOC battery' means on the result interface? Does this imply that the solar system hasn't fully charged the battery?

Dear Gary,

Thank you for your inquiry.

PV*SOL uses the ‘Number of discharge cycles over depth of discharge (DoD)’ diagram to simulate the service life of the battery. In the financial analysis, you can specify a useful life for the battery in the investment costs. If you enter the service life simulated by PV*SOL here, an investment in a new battery will be taken into account after this time has elapsed.

SOC10 means: State of charge (SOC) of the battery, based on a battery capacity of C10. The diagram shows the average state of charge (based on C10) of the battery for 12 months. In January, the average state of charge is approx. 65 %. Some sources say that Li-ion batteries with an average SOC of 50 % have the longest service life, others say 65-75 %.