This is the link to PVWatts: http://pvwatts.nrel.gov
Here are the steps on how we calculate the solar production using PVWatts 5:
1. Enter the customer’s address.
2. Fill in the inputs based on the data you defined in the Platform:
- System Size
- Array type
- System Losses – to obtain this, the formula is [(1 – Derate Factor) * 100%]
- Inverter Efficiency