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--- electrical:solar:charge_controller [2022/08/09 14:05]
frater_secessus [further reading]
+++ electrical:solar:charge_controller [2022/08/09 14:12]
frater_secessus [MPPT]
@@ Line 43: / Line 43: @@
 high for system needs((particularly with higher than nominal 12v panels )) the controller performs a DC-DC conversion to bring the voltage down to a directly usable level.  Because **current through a conductor is directly proportional to voltage**((https://en.wikipedia.org/wiki/Ohm%27s_law)) this downconversion effectively turns excess voltage into increased amps.(minus conversion losses).
-This ability to decouple panel and bank voltage can result in 10%-30% more power harvested from 12v nominal panels than with a PWM controller.  Marketers like to call this "boost" or "gains" but it really just full capture of whatever power the panel[s] can provide under given conditions.
+This ability to decouple panel and bank voltage can result in 10%-30% more power harvested from 12v nominal panels than with a PWM controller, depending on conditions.  //Average// daily production with MPPT is typically ~+15%((https://www.redalyc.org/journal/849/84959429001/html/)), which may or may not justify the added cost on its own.
 === "boost" effect ===

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