API instructions - total energy

In the API instructions ( nsrdb.nrel.gov/api-instructions ) it has this formula (which looks like it's calculating the capacity factor):

# Divide sum of generation by the number of periods times the system size
df.sum() / (525600/int(interval) * system_capacity)

where the system_capacity is in kW (even though it is shown in the comments as MW - see sam.nrel.gov/node/73432 ).

However 'generation' is calculated in MW earlier on:

df = np.array(ssc.data_get_array(dat, 'gen'))

Does that mean that the formula should read:

df.sum() / (525600/int(interval) * (system_capacity/1000) ) ?

Hello,

The API example is provided to illustrate how to use the NSRDB data with the SAM SDK. You should perform your own dimenstional analysis to ensure that the units in your code are correct.

Best regards,
Paul.