Module degradation accounts for the fact that module performance degrades over time. Many modules have a first-year drop sometimes called "burn-in", followed by a degradation rate typically between 0.25% - 0.75% per year.
HelioScope currently models the first year of a solar array's production and does not account for degradation by default. That said, we do include an industry-standard 2% soiling loss in the Condition Set, which can be modified to include specific degradation values.
How to Account for Year 1 Degradation
- Edit the Condition Set for your project
- Go to the Soiling section
- Increase your soiling losses to account for degradation
- Note: you can increase soiling monthly