ASTM E2939
Standard Practice for Determining Reporting Conditions and Expected Capacity for Photovoltaic Non-Concentrator Systems
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About This Item
ASTM E2939 is the ASTM standard that addresses how to determine reporting conditions and expected capacity for photovoltaic non-concentrator systems. It provides a structured basis for describing performance in a way that is more consistent and easier to compare across systems. For engineers, buyers, and evaluators, this technical document helps support clearer capacity reporting and more reliable performance communication for photovoltaic systems that do not use concentration.
Purpose of ASTM E2939
The purpose of this standard is to establish a common practice for identifying the conditions under which photovoltaic system results are reported and for estimating expected capacity under those conditions. By focusing on reporting conditions, ASTM E2939 helps reduce ambiguity in performance claims and technical comparisons. Its guidance is especially relevant when a photovoltaic non-concentrator system needs a consistent framework for evaluation, documentation, or acceptance-related review.
Common use cases of ASTM E2939
This standard is commonly used when specifying, reviewing, or comparing photovoltaic non-concentrator systems in a procurement or technical assessment setting. It may support performance reporting, capacity estimation, and consistency in documentation for system evaluation. ASTM E2939 is also useful when stakeholders need a shared reference for how expected capacity should be stated, especially where clear reporting conditions are important for engineering review or product comparison.
Why ASTM E2939 matters
ASTM E2939 matters because clear reporting practices improve consistency, reduce misunderstanding, and support more dependable decision-making. When expected capacity is described under defined conditions, results are easier to compare and verify. That can help with compliance efforts, quality control, and product evaluation, while also lowering the risk of miscommunication between manufacturers, specifiers, and end users. In practice, it supports more transparent and defensible photovoltaic performance reporting.
- Reporting conditions for performance data
- Expected capacity for photovoltaic systems
- Non-concentrator system evaluation
- Consistent technical documentation
- Publication Date: 2023-08-08
- Publisher: ASTM
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