The best photovoltaic solar panels
Thought I would share some information on what are rated as the best/most efficient panels available. Sanyo HIT Power N Series. The cells are hybrids of monocrystalline silicone, surrounded by ultr...
Forum Discussion
smkettner wrote:
$$ per watt is economic efficiency. Unless mounting space is limited then watts per sq. ft. is space efficient.
That is the only efficiency I know.
We have those DM panels with 22v Voc and low Isc compared with same wattage 21v Voc and higher Isc of "normal" panels.
You can have equal size equal cost for the watts panels, but one makes more amps. So why do we care about those watt thingies? You have to look at what amps you get for the size and cost.
It is amps what am!
Unfortunately, the 24v and up panels have only half the amps of a 12v panel, so now it is all up to the MPPT to make things even. Which is why you have to look at the MPPT controller too. You can't just compare panels, you have to compare the 24v panel/MPPT combo for amp making comparisons.
