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Energy performance index (EPI)
Chart
Basic info
Description | The energy performance index is the ratio between a system’s actual yield and simulated yield. Ideally, the value should be as close to 100% as possible. The simulated yield is calculated based on a daily irradiation value at the module level, module temperature, and the technical properties of the components, such as inverter characteristics or module efficiency. |
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Prerequisites | Simulation is configured under System configuration (wrench icon) > Calculations > Simulation. See Simulation and solar power chart. |
Further details | |
Relevant chart | Energy performance index chart |