Biomass Combustion model and NaN annual energy

The biomass combustion model requires a weather file with relative humidity data. The NREL National Solar Radiation Database (NSRDB) typical year (TMY) files that SAM downloads by default from the Location and Ambient Conditions input page to not contain relative humidity data. We are aware of this issue and will fix it when we can:

github.com/NREL/SAM/issues/111

In the meantime, instead of downloading a default TMY weather file, you can download a single year file, which does contain the humidity data:
File Attachment:

Best regards,
Paul.