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Nomenclature

NºP.: Number of panels.
P.power: Power of the solar panel (Wp).
DC r.: DC rating (kWp).
DF: DC to AC Derate Factor (DC r. * DF = AC rating)
Energy (∑Em): Electricity production from the given system in one year (AC energy) (kWh).
Yield: Ratio between power and energy (kWh/kWp).
Face: Number assigned to the face with the solar array. (Activate layer TX:Face_names to see what it is).
Group: Number of the group of solar panels with same tilt, azimuth and model. Azimuth: Solar panel azimuth in grades.
Tilt: Solar panel tilt in grades.
Relative tilt: Angle between solar panel and roof in grades.
L: Losses.
LID: Light-Induced Degradation.
Em: Average monthly electricity production from the given system (kWh/month).
Ed: Average daily electricity production from the given system (kWh/day). Ed= Em/(month days).
Hd: Average daily sum of global irradiation per square meter received by the modules of the given system (kWh/m2/day).
Hm: Average monthly sum of global irradiation per square meter received by the modules of the given system (kWh/m2/month). Hm = Hd*(monthly days)
Edy: Yearly average of Ed(kWh/day). Edy= ∑Em/(year days)
Emy: Yearly average of Em (kWh/month). Emy=∑Em/12
Hdy: Yearly average of Hd (kWh/m2/day).
Hmy: Yearly Average of Hm (kWh/m2/month). Hmy=Hdy*365/12
∑Hm: Yearly sum of Hm (kWh/m2/year). ∑Hm=Hdy*(year days)

Notes:

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Caution: Photovoltaic system performance predictions calculated by PVWatts® include many inherent assumptions and uncertainties and do not reflect variations between PV technologies nor site-specific characteristics except as represented by PVWatts® inputs. For example, PV modules with better performance are not differentiated within PVWatts® from lesser performing modules.