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pv producing negative electric power

After running building simulation with photovoltaic panels using Sandia model, I got this warning: Generator: photovoltaic named tiltedpv is producing negative electric power.I am using simple ideal inverter with the generator rated 20000 watts.Does anyone know why this issue occurred?

pv producing negative electric power

After running building simulation with photovoltaic panels using Sandia model, I got this warning: Generator: photovoltaic named tiltedpv is producing negative electric power.I am using simple ideal inverter with the generator rated 20000 watts.Does watts.I defined number of modules in series and series string in parallel to be 1.Does anyone know why this issue occurred?

pv producing negative electric power

After running building simulation with photovoltaic panels using Sandia model, I got this warning: Generator: photovoltaic named tiltedpv is producing negative electric power.I am using simple ideal inverter with the generator rated 20000 watts.I defined number of modules in series and series string in parallel to be 1.Does anyone know why this issue occurred?