Originally Posted by booster
If I did the calcs correctly, both the panels you list with the wattages and sizes have the same efficiency. The gain you would get would be from more efficient placement on the roof.
Those efficiencies are pretty common I think. Our 4 year old Grape solar panels are 20X40 IIRC and 100 watts, so right in the same area, or even a bit better.
Thanks for answering my question booster. When you mean both panels have the same efficiency, you mean the rigid and flexible ones from Solara or when you compare them with mine.
Mine are 90W (21'x41") and Solara are 140W (22" x 59"). My primary goal is having a wider panel area so I can take out one panel to accommodate for a skylight/vent for the bathroom but it would be nice if I can find more efficient ones. Not sure I'm willing to spend that much more money to gain a couple percentage.
I understand that the 140W are bigger but are there other important data to consider when evaluating efficiency of a panel like this?
On the S565M44 panel page: https://www.coastalclimatecontrol.co...lar-panel.html
140 watts Peak Power at STC*
25.1 volts Peak Power Volts
5.58 amps Peak Power Amps
565 watt/hrs Est. Daily Yield (summer)**
22.5% Cell Efficiency*
21.2 lb Weight
Offers the best low-light behavior - grabs current even when the sun is low.
Genuine SunPower® monocrystalline back-contact solar cells. These are the real deal, not the back-contact solar cells made available to the secondary market that don't (and shouldn't) carry the prestigous SunPower name.
These panels have a long lifetime, even under extreme conditions with scratch-resistant, thermally hardened, non-glare, thin glass and excellent mechanical load resistance thanks to a torsion-resistant module frame.