[QUOTE=Mark Johnson;633486]Our boat has been solar self sufficient for the last 15 years and it works great for us! Having had both solar and wind
, I found it to be both quiet, and produce more amps, averaged out over a year. We got rid of our wind
gen years ago, for this reason... It made room for a 110w panel on the stern.
If space makes this an impractical goal, you could let the engine
run in the morning do half the work, and let the solar top them off over the day. No matter the size of the alternator
, they are not great for topping off batteries, as their extra amps cannot be absorbed when batteries are near the top.
We replaced our voltage regulator
with a BALMAR
charge controller. This makes your alternator
act as a programmable 3-stage charger
. It also drops the alternator power (engine drag) if the power is not needed.