Differences

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--- electrical:solar:panels [2023/09/05 21:44]
frater_secessus [efficiency]
+++ electrical:solar:panels [2024/01/04 16:54]
frater_secessus [STC and NOCT] compare
@@ Line 143: / Line 143: @@
 ===== efficiency =====
-The formula for panel efficiency is simply rated watts / square meter.  A 20% panel will make 200w per square meter under lab conditions (ie, 20% of the lab's 1000w standard).
+The formula for panel efficiency is simply rated watts / square meter.  A 20% efficient panel will make 200w per square meter under lab conditions (ie, 20% of the lab's 1000w standard).
@@ Line 191: / Line 191: @@
 While NOCT may be useful for gauging normal harvests, STC is used for system component((like controllers)) sizing because the panels really can make STC power((or even more)) in some real world conditions.  The system needs to be sized to deal with high-output situations, particularly overly high panel voltages.
+>> NOCT is useful for comparing two panels **[that have] the same STC rating**. A panel with a higher rated power at NOCT for example, will generally result in a higher performing panel.((https://solardesignguide.com/stc-and-noct-solar-panel-test-conditions-explained/))
 **PTC** ([[https://www.osti.gov/servlets/purl/93997-mpCvkV/webviewable/|PVUSA]] Test Conditions)((https://solarmazd.com/stc-ptc-noct-what-do-they-mean-and-how-to-use-them/)) is a rarer standard.

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