Jaime Solorza On Sun, Sep 9, 2018, 10:31 AM Chuck McCown <[email protected]> wrote:
> Try to set the angle to the same as the latitude. So roughly 40 degrees > of > tilt angle. > > Rather than a 3x3 array, figure out the area. > You get roughly 11 watts per square foot for amorphous panels. > > Then take that wattage and try to find panels that will both fill the area > but also add up to your max inverter input voltage. > > Many grid tie units are string inverters designed for series strings that > will go up to 1000 volts now. > So overvoltage will probably not be an issue. > > -----Original Message----- > From: Sterling Jacobson > Sent: Saturday, September 08, 2018 10:59 PM > To: AnimalFarm Microwave Users Group > Subject: Re: [AFMUG] OT Solar and battery backup > > Okay, forget oversize I guess. > > I like the idea of non-roof mount. > > What if I made a pergola type deck cover, but sort of mounted an array of > 3 > x 3 panels tilted southward on top? > > > > -----Original Message----- > From: AF <[email protected]> On Behalf Of Chuck McCown > Sent: Saturday, September 8, 2018 7:58 PM > To: [email protected] > Subject: Re: [AFMUG] OT Solar and battery backup > > The only reason to oversize an array here in Utah if fed by Rocky Mountain > Power is if you made an effort to run electrical heating loads in the > winter > to offset some natural gas usage. Nice to run the AC as much as you want > in > the summer too. > > I have wonder if I put a small inverter to back feed my home and > disconnect > the mains during an outage, if the inverter would spoof the grid tie > inverters into coming on. I am pretty sure they would if the inverter put > out a good clean sine wave. But if the inverters got satisfied that there > was mains power and they kicked on, they would overvoltage things pretty > quickly, so I would have to have some kind of load that would ballast the > grid tie inverter a bit. Be fun to experiment with. > > -----Original Message----- > From: Robert Andrews > Sent: Saturday, September 08, 2018 7:45 PM > To: [email protected] > Subject: Re: [AFMUG] OT Solar and battery backup > > & while they are selling your solar to your neighbor they don't lose the > 20-28% line lossage from the power plant that becomes additional profit > for > them! They bill the neighbor like the loss is still there and give you > credit for your solar like the loss is going to happen. > > > > On 09/08/2018 03:55 PM, Chuck McCown wrote: > > I choose to mount on the ground rather than the roof. If you have the > > room you can get optimal placement and tilt angle. > > Grid tie inverters are the way to go. One large one is much more cost > > effective than the microinverters when calculated dollars per watt. > > You can get inverters for about 15 cents per watt. > > Mounting (that I designed out of unistrut) is about 15 cents per watt. > > Panels can be had for 50 cents per watt. > > 10 kW is a pretty good size for most homes. > > If you oversize it, Rocky Mountain Power will erase all your carryover > > credit each spring thus selling your net production to your neighbors at > > retail rate while not giving you any credit for it. So the target is > the > > $8.48 monthly bill (the minimum in Utah when on RMP) and no extra > > power in your credit account each March. > > Screw batts. Batts will double the cost of the system. > > Nice generator with an automatic transfer switch and a propane tank ( > > if you are a prepper) or natural gas if you are not worried about it. > > *From:* Sterling Jacobson > > *Sent:* Saturday, September 08, 2018 1:10 PM > > *To:* AnimalFarm Microwave Users Group > > *Subject:* [AFMUG] OT Solar and battery backup > > > > What’s the current good method for adding a 10 panel system with > > battery backup for 100A home system? > > > > Seems like several solar panel kit options that use microinverters > > tied to a main system which ties to the main breaker. > > > > But not sure how to integrate battery system into that. > > > > Seems like the current solar guys all want to just install the solar > > system and send extra to the grid or offset, not backup battery. > > > > And on top of that, what if I want a standard Generac 11kw generator > > integrated into the mix? > > > > ---------------------------------------------------------------------- > > -- > > -- > > AF mailing list > > [email protected] > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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