Why do I get yield differences when simulating different modules with the same power output?

When simulating different modules that have the same power output and similar characteristics, yield differences are usually due to the low-light performance.

Module manufacturers enter their own data into the PV*SOL database. They have the option to define a specific low-light performance for the module. A specific low-light characteristic curve is then calculated for the module. If a manufacturer does not do this, a standard low-light performance for the respective module type, e.g., monocrystalline, must be assumed.

The low-light performance used for the selected modules can be found in the database.

Example module (600 Wp) with specific low-light performance

Example module (600 Wp) with standard low-light performance