4mwp photovoltaic power plant project


Municipality Montalto di Castro


Enertel Services Ltd.




The photovoltaic system in question is defined as GRID-ON, i.e., connected to the national grid.
Consisting of 15,980 modules, divided into 799 strings each having 20 modules in series, for a total area occupied by the plant of about 6.32 hectares.
Based on the UNI 8477 and UNI 10349 standards, the irradiance calculated on modules exposed at 0° to the south and inclined to the horizontal by 32° with an albedo factor chosen: Green Grass turns out to be 1657 kWh/m².


The power at STC conditions (module irradiance of 1000 W/m² at 25°C temperature) is found to be:
PSTC = PMODULE x N°MODULE = 245 x 15980 = 3,915,100 Wp

Considering a B.O.S. (Balance of system) efficiency of 85%, which takes into account losses due to various factors such as: higher temperatures, dusty module surfaces, efficiency differences between modules, losses due to the conversion system the power on the AC side will be equal to:
PCA= PSTC x 85% = 3,327,835 Wp

The energy that can be produced on an annual basis by the photovoltaic system is given by:
E [kWh/year) = (I x A x Kombre x RMODULI x RBOS)
E = (1657 x 25,945.128 x 0.95 x 14.4% x 85% ) = 4,999,002.44 kWh/year

The value of 4,999,002.44 kWh/year is the energy that the photovoltaic system will produce in one year.

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