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How can I calculate the PR of different plants?


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I am designing a PV system in 4 warehouses. Each building has its own tilt and azimut, and due to the limitation of PVsyst on the creation of sub-arrays (8 maximum) I cannot calculate the generation of the 4 warehouses together. So I did 4 different PVsyst, one for each building.

But now I have to provide the PR of the whole project. The PR is calculated as follow:

PR = E_Grid / (GlobInc * PnomPV)

For E_Grid and PnomPV I can sum all the energy and the total power peak installed, but for GlobInc is not possible

I thought to do the weighted sum of each PR using the E_Grid of each building. Do you think this can be the solution?

Thanks for your help!

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