7.56 KW system in Dublin CA (SF Bay Area) SolarWorld 280+Enphase M250 $25700 - $3.4/W

[radareclipse]

I can't believe this thread keeps going and going.

[solar pete]

Hi All,

Just for the newbies. There are people on this forum who are actively engaged in referral program work. This means they want you to buy your solar from a vendor because they get paid. Better off to do your own home work people, have had reports that there are a few very unhappy with installers they were recommended here.

site sponsor www.solarreviews.com or www.solar-estimate.org can be helpful, cheers.

[Andywill]

Hi,

I am in Pleasanton. Can you please PM the name of installer? Thank you.

[abyebye]

PM sent

[aboeingdriver]

HI,
Can you send the name of the installer.
The best quote I have now is 3.95 for a 8k system with LG 300's and enphase micoinverters.

[abyebye]

Yeah, I started with them too

Hi,

Can you send me your installer info, so I can get a quote? Solarcity wants $35k for a 7kw system, what a rip off.

[raghu4026]

Hi,

Can you send me your installer info, so I can get a quote? Solarcity wants $35k for a 7kw system, what a rip off.

[paul65k]

As it says in the PVOutput title, max output power is 15KW. However it is over paneled to help compensate for the weather here. Does about 27,000 KWH a year, keeps the house warm. Bruce Roe

Just think how much more output you would get from your system if you lived in Arizona.

To help possibly answer the comparison; my little 4.4Kw system put out 7390 Kwh last year...........we are on the north west border of AZ along the Colorado River and technically in the Mohave desert

[aboeingdriver]

Can you send me a pm on the installers name. I live in Livermore am collecting bids also.
Thanks
Mark

[solar_newbie]

Thank you for PM. I can not reply, but I contact the installer to get the quote. So far, he got the best quote.

[solar_newbie]

Can I have a reference also? I am in San Ramon and in the middle of bidding for my home solar.

Thanks,

[Yaryman]

Thanks for the info. It's the highest efficiency estimate I have seen so far.

", I was told at 5.87 KW system would generate about 10,000 Kwh per normal year."

solardreamer,
That estimate was for a house in Brentwood, CA. We get none of the fog that most of the SF Bay Area gets most days.
The sales rep giving me the estimate was from a company that does many installations out here, so he should have a good idea
what their systems will produce.

[J.P.M.]

Thank you. That's a helpful reference point. I agree the EPBB is conservative.

Use PVWatts with an 8 - 10 derate instead of the 14 %. That seems to be a slightly more realistic # You can be as conservative or optimistic as wanted, but starting with something that has a better likelihood of being something akin to reality may be a better way.

[solardreamer]

Thanks for the info. It's the highest efficiency estimate I have seen so far.

Not speaking for the OP, I was told at 5.87 KW system would generate about 10,000 Kwh per normal year.
It was the salespersons estimation that this year with very little rain the system would generate about 10,600 Kwh.
Of course, it's the salesperson's job to sell you more than you need. So maybe the system would generate more power than he was stating,
but he was understating the output so I would buy more panels. Yes people actually do that.

[solardreamer]

Thank you. That's a helpful reference point. I agree the EPBB is conservative.

I expect my system to generate more than 11,000 kwh per year. I didn't ask for any guraranteed output when I signed the contract. (after getting more than a dozen of quotes, somehow I started to ignore this)

So I emailed my vendor about this today. And I was told that they used EPBB calculator on line, http://www.csi-epbb.com/default.aspx. This calculator is a bit conservative, system tend to produce about 5-10 percent more than what this calculator predict. If someone want a guaranteed output they would use this calculator to predict.