Solar Panel Requirements Calculator

Energy demand/day: Wh

	Winter (min)	Summer (Max)
Average hours sun/day
Peak capacity (W)
Suggested panel size (W)
Estimated cost ($)
Total energy provided daily (Wh)

Efficiency readjustment:
Temperature readjustment (-10% efficiency):
Battery efficiency (-60% efficiency):
Wiring loss (-5% efficiency):

Tilt adjustment (+8% efficiency):
Sun tracking (+4% efficiency):

Cost per Watt ($):  
(e.g. 4.0 $/W is for current Si-based PV cells)



version 1.1