Solar Quote help

[KRenn]

After doing a lot more reading, I have a question about inverter sizing with this set up. I know originally the first two quotes were going to put the panels on two different sides of my roof. Southwest and southeast facing. With this quote below, he wants to put all the panels on the southwest facing roof. I checked the inverter sizing tool on Power-one's website and it said that this would be 111% of the inverter's capacity and could result in loss of power generation.

I know that Naptown said that in the first quote with panels facing different directions that would minimize clipping and would work fine if set up correctly by the installer. But with all the panels on one side with this power one inverter, would that still be true or should this be changed? Am I worrying about nothing? But i also understand about trying to keeo the inverter at peak efficiency for longer periods of time. But, I would hate to lose what could be a decent amount of production.

Also, is the power one inverters the way to go? Seems that they have a lower start up voltage and really good efficiency. If I remember from reading some posts on here, fronius inverters don't seem to be highly recommended.

(20) Sunpower SPR X21 345 Panels
(1) Power-One PVI 6000 OUTD-US-W inverter

DC STC Rating = 6900 kW

Thanks.

The inverter size is right on the borderline for that size system, your next possible step up would be utilizing two 3.6kW Power-One inverters instead. I'd ask the company to quote you how much more it would be to go up to the two smaller inverters, it shouldn't be all that much.

[Joker45]

The inverter size is right on the borderline for that size system, your next possible step up would be utilizing two 3.6kW Power-One inverters instead. I'd ask the company to quote you how much more it would be to go up to the two smaller inverters, it shouldn't be all that much.

Thanks for the input. I'm going to be talking to him tomorrow and I will ask him for a price on that configuration.

Just got my latest PG&E bill in today. Freaking $360 electric bill......

[Joker45]

Okay I signed paperwork on a system late last week. Here is what I ordered.

(18) Sunpower X21-345 Panels
(1) Power-One PVI 6000 inverter
System Cost = $29,906
Tax Credit = $8,971
Net Cost = $20,935

DC STC Rating = 6210 kW

First yr production = 11,649 kWh
Current annual usage = 14,074 kWh

Gross Cost/kW DC = $4.81
Net Cost/kW DC = $ 3.37

I went with a little smaller system then originally planned due to once they actually did a site survey, they discovered that 21 panels would not fit on the one roof and would have to be either downsized or split between the two roofs. I decided that I wanted to keep them all on one roof I case I wanted to add more panels to the other roof down the road for some reason.

This includes production and consumption monitoring and a 12 year roof warranty. It's supposed to be installed and final inspects by August 9th. Then it's waiting on PG&E to install the net meter.

[Colasec]

Congrats on the great pricing, Joker. I've interviewed nine companies and right now my best quote for an 18-panel Sunpower X21 345 system is $5.18 gross/kW (I am in Orange County). If your company does work down here, can you please PM me with their contact info? (my post count isn't high enough to PM yet)

Thanks!

[rx100]

Joker45, could you please share your installer's information? I'm looking out for a similar system in San Jose CA

[Joker45]

Pm sent

[SolarQuadrant]

Hello, I am looking for an installer in the Bay Area too; would you please PM the contractor/dealer contact information. - Thank you

[Joker45]

Hello, I am looking for an installer in the Bay Area too; would you please PM the contractor/dealer contact information. - Thank you

You got it. Pm sent.

[csriram45]

PM me details as well

Please PM me as well. I have a about the same price as yours but for 16 panels vs 18 so would definitely be interested. Is this a cash only offer or could you also do the Sunpower loan?

[HBJoe3]

Congrats on the great pricing, Joker. I've interviewed nine companies and right now my best quote for an 18-panel Sunpower X21 345 system is $5.18 gross/kW (I am in Orange County). If your company does work down here, can you please PM me with their contact info? (my post count isn't high enough to PM yet)

Thanks!

Colasec,
I am in OC too, did you find a decent company yet? Please PM me if/ when you do.
Thanks

[Joker45]

Please PM me as well. I have a about the same price as yours but for 16 panels vs 18 so would definitely be interested. Is this a cash only offer or could you also do the Sunpower loan?

Mine is a cash purchase but the price was good for the sunpower loan also. Pm sent.

[jlgarza15]

Hi Joker, I live in Bakersfield can you PM the installer that did that job? Thanks!

[Joker45]

Hi Joker, I live in Bakersfield can you PM the installer that did that job? Thanks!

Info sent.

[mattwillruss]

Joker,

can you send me your installer info?

Thanks

[foobar]

+1 please send me installer info as well. Thanks in advance.