variables_style_rules.csv

variable;description
tz;timezone
latitude;latitude
longitude;longitude
dni;direct normal irradiance
dni_extra;direct normal irradiance at top of atmosphere (extraterrestrial)
dni_clear;clear sky direct normal irradiance
dhi;diffuse horizontal irradiance
bhi;beam/direct horizontal irradiance
ghi;global horizontal irradiance
ghi_extra;horizontal irradiance at top of atmosphere (extraterrestrial)
gri;ground-reflected irradiance
ape;average photon energy
aoi;angle of incidence between :math:`90\deg` and :math:`90\deg`
aoi_projection;cos(aoi)
airmass;airmass
airmass_relative;relative airmass
airmass_absolute;absolute airmass
poa_ground_diffuse;in plane ground reflected irradiation
poa_direct;direct/beam irradiation in plane
poa_diffuse;total diffuse irradiation in plane. sum of ground and sky diffuse.
poa_global;global irradiation in plane. sum of diffuse and beam projection.
poa_sky_diffuse;diffuse irradiation in plane from scattered light in the atmosphere (without ground reflected irradiation)
surface_tilt;tilt angle of the surface
surface_azimuth;azimuth angle of the surface
solar_zenith;zenith angle of the sun in degrees
apparent_zenith;refraction-corrected solar zenith angle in degrees
solar_azimuth;azimuth angle of the sun in degrees East of North
temp_cell;temperature of the cell
temp_module;temperature of the module
temp_air;temperature of the air
temp_dew;dewpoint temperature
relative_humidity;relative humidity
wind_speed;wind speed
wind_direction;wind direction
pressure;atmospheric pressure
albedo;ratio of reflected solar irradiance to global horizontal irradiance, unitless
precipitable_water;total precipitable water contained in a column of unit cross section from earth to top of atmosphere
v_mp, i_mp, p_mp;module voltage, current, power at the maximum power point
v_oc;open circuit module voltage
i_sc;short circuit module current
i_x, i_xx;Sandia Array Performance Model IV curve parameters
effective_irradiance;effective irradiance
photocurrent;photocurrent
saturation_current;diode saturation current
resistance_series;series resistance
resistance_shunt;shunt resistance
transposition_factor; the gain ratio of the radiation on inclined plane to global horizontal irradiation: :math:`\frac{poa\_global}{ghi}`
pdc0; nameplate DC rating
pdc, dc; dc power
gamma_pdc; module temperature coefficient. Typically in units of 1/C.
pac, ac; ac power
eta_inv; inverter efficiency
eta_inv_ref; reference inverter efficiency
eta_inv_nom; nominal inverter efficiency