Differences

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--- electrical:solar:pvwatts [2023/06/17 13:27]
frater_secessus [SYSTEM INFO]
+++ electrical:solar:pvwatts [2023/06/17 13:33]
frater_secessus [SYSTEM INFO] pwm efficiency clarification
@@ Line 83: / Line 83: @@
   * your array size in **kW**.  A kilowatt is 1,000w, so a 200w = 0**.**2kW (zero-point-two)((the calculator is set up like this because it is designed to model large residential and commercial installations that are measured in kW))
-  * accept the default losses for MPPT systems.  PWM systems should use something like 30%
+  * accept the default losses for MPPT systems.  PWM systems should use something like 30%((PWM doesn't really have 30% losses in the system;  on average it leaves ~30% unharvested.  The end result is the same, math-wise))
   * if your panels are flat (most are) adjust tilt to zero

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