This would work OK for it's intende use, an off-grid way to recharge some batteries. But for a normal house, it is at least 10X undersize, maybe 20X. It would not even run a toaster.
On a small boat house boat there would be an engine with an alternator that is the primary source of power when away from the dock. This was intended as a supplement. When you do the calculations to see what you need you to have to seriously de-rate the panels because the sun will not be at 90 to the panel unless you install a tracking system with two motors and NO ONE does this. It is cheaper to simply buy more panels. The rating also assumes a sunny day. So you derate them based on the sin of the angle and your local weather and also for any shading. THese smallflexible pannelsare designed for very light duty use, like keeping batteries from self-discharging On Mon, Mar 11, 2019 at 2:37 AM Gregg Eshelman via Emc-users <[email protected]> wrote: > > This one has to be too good to be true. > https://www.ebay.com/itm/1500w-Flexible-Solar-Panel-Kit-System-120A-Controller-3000w-Inverter-House-Boat/333107282098 > Says it includes 15 100W panels, connecting cables, inverter etc. for $89. > Dunno what else would be required to tie it into a domestic power supply, but > at that price it's highly tempting. Would definitely take a bite out of the > air conditioning bill in summer, if it's anywhere near as good as it > claims.Better control systems using PWM and MPPT can wring the best out of a > PV panel. > I've a long south facing front on my shop building. It could use an awning > angled to 44.25 degrees, covered with solar panels. I'd have to cut down a > tree but I'm thinking of doing that anyway because it's an evergreen that > constantly drops seed pods and needles. > IIRC if your panels aren't on movable mounts the best compromise is to angle > them to match your degrees latitude. > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
