Are ERP results factoring in kWh capacity degradation over time? #188
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When I look at the ERP results and the graph says the following: Is this year 1, or is it factoring in kWh capacity degradation and giving a survival rate over the BESS expected life? I see in the User Manual it says "The REopt web tool does not currently account for battery degradation or loss of capacity over time in its dispatch and energy/power calculations". Does this mean that capacity degradation is not factored into the ERP simulation? |
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The modeling behind the ERP results uses the dispatch timeseries from the optimization. These are "levelized" over the analysis period for all generation sources (e.g., the PV dispatch accounts for 0.5%/year degradation). However, in REopt we do not currently account for battery degradation in the determination of state of charge (you can "cost" degradation using the codebase, but not the web tool). So in short, you are correct that the ERP does not factor in battery capacity degradation. |
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The modeling behind the ERP results uses the dispatch timeseries from the optimization. These are "levelized" over the analysis period for all generation sources (e.g., the PV dispatch accounts for 0.5%/year degradation). However, in REopt we do not currently account for battery degradation in the determination of state of charge (you can "cost" degradation using the codebase, but not the web tool).
So in short, you are correct that the ERP does not factor in battery capacity degradation.