HOMER Energy Support

Modeling thin-film PV

Last Updated: Jul 25, 2016 02:46PM MDT

HOMER uses a very simple model of the PV array.  It assumes the PV power output is linearly related to the global radiation incident on the panel, regardless of temperature.  A panel rated at 5 kW puts out 5 kW at an incident radiation of 1 kWh/m2.  HOMER assumes that it will put out 2.5 kW at an incident radiation of 0.5 kWh/m2.  I know that thin film PV has a lower efficiency than polycrystalline silicon, but that is no problem for HOMER.  You enter the rated power of the panel, and if a 5 kW thin-film array is larger than a 5 kW polycrystalline array, that is of no importance to HOMER.

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