SunPower or LG?

[InmarketforPV]

Thanks foo1bar, I agree both are quoted at high end. I do have quotes from local small companies using Tier2 panels like REC, Mission Solar, lower at $2.8~3/W, but decided to go with Tier1 panels, these are the only quotes I got so far offering SP and LG. So optimizer does have advantage of monitoring individual panel performance?
To J.P.M, located at Bay Area, NorCal, yea.. everything here is bumped up...
Both systems estimated similar annual production ~15700KWh, annual cost to PGE will be roughly $5k, so both systems have about 6 years cost recovery after tax credit.

[J.P.M.]

I'm with Foo1bar on system cost. Both those costs seem high by maybe 30+% or so.
Where are you located ?
What is the annual cost per year for the power either system will produce ?

[foo1bar]

So:
$39200 / 11060W = $3.54/W
$40400 / 10250W = $3.94/W

Neither of those is great IMO.

I think the optimizer is probably slightly more efficient than microinverter - BUT - I don't think there's truly unbiased research to show the efficiencies in various scenarios.
And if everything else were equal, I'd want per-panel monitoring.
I'd probably even be willing to pay a very small (~1%) premium for that capability. In this case you're getting it at cheaper price.

1> I would look for a different small local company that does solar and see if one of them can do ~$3/W for a 11kW system.
2> I would look at pvwatts to get my own estimate of production. And see if I could do a smaller than 11kW system.
3> I would make sure that the contract included any needed main panel upgrade or power service upgrade to have a 10-11kW system. (Even if you need a panel upgrade, I think it's likely you can get a 11kW system for ~$3/W.)

[InmarketforPV]

Hello, I am trying to finalize my PV project after 6 quotes and some research, and now narrows down between SunPower and LG. Here is a comparison of the two,

1. Direct quote from SunPower, all in one Equinox system, A-series 410 W panel with micro inverters x 25, 10.25 KWp system, standard 25yrs warranty entire system, degradation at 0.25%/yr, quoted at ~$40,400.
2. LG quote from local solar company, 395 W LG panel x 28, with SolarEdge inverter + optimizer, 11.06KWp system, 25 yrs warranty on parts, 15 yrs workmanship and roof-penetration, 15 yrs production warranty - incl. reimbursement of electric bills during system down, degradation at 0.33%/yr, quoted at ~$1.2K less than SunPower.

Interestingly, although bigger system from LG (0.81KW more), their estimated power generation is about the same as SunPower's estimate - maybe adding overhead just to insure their production warranty.

I don't find much of cost benefit going with LG, but local company's top ranked reviews on service and commitment on reimbursing system down cost (not with SunPower) now make it a hard decision for me. Long term, small company sustainability vs SunPower is also a concern. Technically, small company trying to sell me that optimizer is more efficient than microinverter, both energy and cost wise, also with microinverter, system not able to monitor individual panel while optimizer could do so? Can I get some advice helping me to decide? Thanks in advance!