Definition
PVUSA Test Conditions (PTC) is a module rating method developed by NREL/PG&E: 1000 W/m² irradiance, 20°C ambient temperature, 1 m/s wind, AM 1.5 spectrum. CEC publishes PTC values; used in California Solar Initiative.
Key Takeaways
- PTC = PVUSA Test Conditions, more realistic than STC.
- 1000 W/m², 20°C ambient, 1 m/s wind, AM 1.5.
- PTC Pmax typically 88–92% of STC.
- CEC publishes PTC values for US incentive programs.
Frequently Asked Questions
1 commonly searched questions about PTC (PVUSA Test Conditions).
PTC vs. STC?
STC: 25°C cell, controlled lab. PTC: 20°C ambient (cell typically warmer), more realistic. PTC values typically 88–92% of STC nameplate.
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