pvlib.pvsystem.pvwatts_losses¶
-
pvlib.pvsystem.
pvwatts_losses
(soiling=2, shading=3, snow=0, mismatch=2, wiring=2, connections=0.5, lid=1.5, nameplate_rating=1, age=0, availability=3)[source]¶ Implements NREL’s PVWatts system loss model. The PVWatts loss model 1 is:
\[L_{total}(\%) = 100 [ 1 - \Pi_i ( 1 - \frac{L_i}{100} ) ]\]All parameters must be in units of %. Parameters may be array-like, though all array sizes must match.
- Parameters
soiling (numeric, default 2) –
shading (numeric, default 3) –
snow (numeric, default 0) –
mismatch (numeric, default 2) –
wiring (numeric, default 2) –
connections (numeric, default 0.5) –
lid (numeric, default 1.5) – Light induced degradation
nameplate_rating (numeric, default 1) –
age (numeric, default 0) –
availability (numeric, default 3) –
- Returns
losses (numeric) – System losses in units of %.
References
- 1
A. P. Dobos, “PVWatts Version 5 Manual” http://pvwatts.nrel.gov/downloads/pvwattsv5.pdf (2014).