Just had my 8.54 kW system switched on yesterday. So excited!
Early Christmas present.
Early Christmas present.
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Just had my 8.54 kW system switched on yesterday.
Damn, out there you guys don't have 3 feet from the roof ridge restriction huh.
Ground mounted my 24 panels, fixed tilt, 19º @180º azimuth. No roof worries and no expensive cleaning worries along with liability concerns.
I noticed the same thing. It makes for a more aesthetic installDamn, out there you guys don't have 3 feet from the roof ridge restriction huh.
Meh... to each his own. The only marginal concern with a roof mount is the additional labor required to replace it... eventually... maybe. Roof anchors are pretty much fool proof these days and cleaning only boosts output for ~2 weeks in most areas before you reach peak dirt again. Not much benefit to cleaning.
Now active! Peak at 5.26 kW in few days of winter sun. Should I expect it to hit panel max (6.8) in summer?
helpful info to know! PVWatts estimates 10,400 KWh which equates to approx 250 similar days of winter sunshine. Seems a bit low but i've only had it a weekPanels lose ~0.5% / C. In the summer panels typically run 70C and their rating is based on 20C. So you're looking at a ~25% decline. Peak power is usually in April or May.
Just had my 8.54 kW system switched on yesterday. So excited!
Early Christmas present.
Well I live at 51° North so very different from your Southern location.
We have a generous government incentive. So it was only about $1.90 per watt for the whole install. Forecast to generate 10,000 kWh per year.
In my four seasons climate I can see striking differences from day to day, depending just on temperature, as you say.Panels lose ~0.5% / C. In the summer panels typically run 70C and their rating is based on 20C. So you're looking at a ~25% decline. Peak power is usually in April or May.
I also like my ground mount panels because I can adjust the pitch with the seasons (from 15º around the summer solstice to 55º around the winter solstice, in 10º increments) and they make it easy to pull the snow off in the mornings — I use a window squeegee on a 16 foot painter's pole for that. The downside is that the cost of the ground mount hardware was quite high, even though I did my own post hole and trench digging (in rocky glacial moraine) and concrete work. I like not having holes in my precious roof, as well as no need to route wires through an attic with blown fiberglass in it (I hate working in my attic). It also keeps the panels a lot cooler, as you said.I highly recommend a ground-mounted system if you have space, say 1/2 acre or more. They are easy to access, easier to work on (great for DIYers), provide stronger racking, no need to conform to roof dimensions required by code (at least in most US localities), permitting fees negligible ($600 in fee-hungry California when I installed) compared to the total system cost, no need to remove the panels if you need to replace your roof, and much cooler panel temperatures (heat is a solar panel's worst enemy). My dark, concrete tile roof hits 160ºF in the summer when the ambient temperature is a bit over 100ºF. Ground-mounted systems can be hidden from view with shrubs or hedges clipped right at the panel ridgeline vertically and horizontally to prevent panel shading...