Performance ratio
PR puts energy output in the context of irradiance and system capacity. Check the measurement point, capacity basis, period and exclusions before comparing results. This introduction does not replace the standard’s calculation requirements.
Availability
Availability describes an operating perspective on readiness. Time-based and energy-based measures can differ, as can the treatment of planned outages and grid constraints. Confirm the contractual definition before drawing conclusions.
Data quality
Monitoring class, sensors, sampling and missing-data treatment affect comparability. The demo’s internal quality flags do not establish that a particular IEC monitoring class has been met.