Hello SAM team:
I have a few questions regarding snow loss with 1-axis trackers:
Page 10 of the "Integration, Validation, and Application of a PV Snow Coverage Model in SAM" paper indicates the Authors were able to implement overnight snow stow angle to increase snow shedding:: " By instructing the simulation of the Mesa Top systemto set the nighttime tilt angle to 20° instead of 5°, we found that the energy predictions for the
simulated system could potentially increase on the order of 1-2% as a direct result of snow
sliding during the night"
- Is it possible to set a nighttime tilt angle in SAM (or Pysam)?
- If an an angle can be set, does SAM allow sliding overnight to occur, such that I would see an effect in %coverage? Marrion's paper refers to "daytime" hours and based on the runs I've done sliding only seems to occur with irradiance >0.
- Assuming nighttime sliding is not allowed, is there a way to override?
Thank you,
Brian