Lowest $/W for SunPower system

[Moe]

In Southern California I give my clients with shingle roofs around $3.4/w for sun power panels and enphase 250
Of course, there other contions that change
that number slightly up or down, electric panel upgrades, roof conditions and such...

[oilerlord]

In Southern California I give my clients with shingle roofs around $3.4/w for sun power panels and enphase 250
Of course, there other contions that change
that number slightly up or down, electric panel upgrades, roof conditions and such...

Because of high voltage in cold climates, SunPower / Enphase is a combo that won't work in where temperatures can fall below -20C in winter. Instead, I went with ABB 0.25 micros that, with a little shopping around, ended up costing a lot less than the M250's.

If a deal can be found on discontinued SunPower gear; I'd go for it. FWIW, I took a chance on 42 used SunPower E18 all-black panels on Craigslist at $0.44/w. They work great and look awesome.

[solar4me]

I've seen as low as $3.35 in the Phoenix area.

To be clear, was that before, or after tax credit, "friends & family discount" discount, for a dealer's own use, etc. ? Prepaid lease ? Did you see the contract ?

Basic price per watt on a 10kW system without any discounts or other funny business involved.

Would you kindly share type/brand/model of panels, inverter type/model & (optimizer/micro-inverter model)? This will help better understanding the great price got.

[nightlfy]

$4/watt for 12 - 327w panels for 3.9kW system; Sunpower 3800 inverter. 30yr old rounded clay tile roof; installed onto single pitch.

[Moe]

$4/watt for 12 - 327w panels for 3.9kW system; Sunpower 3800 inverter. 30yr old rounded clay tile roof; installed onto single pitch.

That's kinda overpriced a little...

[genesmasher]

That's kinda overpriced a little...

I am currently pricing out a 6Kw system in San Diego. So far I got a few quotes for LG/Enphase (3.4-4.0/Wt); one for Sunpower/SMA6000 (~$4/Wt). If I could find someone with Sunpower/Enphase at ~$3.5/Wt, I'd be interested.

[LLtK]

I am currently pricing out a 6Kw system in San Diego. So far I got a few quotes for LG/Enphase (3.4-4.0/Wt); one for Sunpower/SMA6000 (~$4/Wt). If I could find someone with Sunpower/Enphase at ~$3.5/Wt, I'd be interested.

Genesmasher: I'm at the start of pricing phase and received 2 proposals so far. Would you like to exchange proposal info?

[Moe]

I am currently pricing out a 6Kw system in San Diego. So far I got a few quotes for LG/Enphase (3.4-4.0/Wt); one for Sunpower/SMA6000 (~$4/Wt). If I could find someone with Sunpower/Enphase at ~$3.5/Wt, I'd be interested.

I can get you sun power/enphase combo for less than $3.5/w but apparently I'm not allowed to give out my company name on an open source solar forum infested with advertisements for solar city

Look me up or feel free to email me

[LLtK]

I can get you sun power/enphase combo for less than $3.5/w but apparently I'm not allowed to give out my company name on an open source solar forum infested with advertisements for solar city

Look me up or feel free to email me

Moe: Please see your PM for my email address. Thanks.

[genesmasher]

I can get you sun power/enphase combo for less than $3.5/w but apparently I'm not allowed to give out my company name on an open source solar forum infested with advertisements for solar city

Look me up or feel free to email me

PM me as well.

[sensij]

I can get you sun power/enphase combo for less than $3.5/w but apparently I'm not allowed to give out my company name on an open source solar forum infested with advertisements for solar city

Why would anyone ever pair Sunpower with Enphase? The voltage isn't right... Enphase takes 48 V max, and the lowest SP panel I've seen has a 50.9 Voc. Even if you ignored that, clipping would be something nasty on the 327+ W panels of the last two generations. Anyone selling Sunpower+Enphase is trying to steal your money.

[Moe]

Why would anyone ever pair Sunpower with Enphase? The voltage isn't right... Enphase takes 48 V max, and the lowest SP panel I've seen has a 50.9 Voc. Even if you ignored that, clipping would be something nasty on the 327+ W panels of the last two generations. Anyone selling Sunpower+Enphase is trying to steal your money.

See now you are flat out lying...
Sun power and enphase are just brand names, btw
And my clients are reporting their electric bills are in negative

Who's trying to steal people's money???

[sensij]

Just brand names?

Enphase has two products that anyone would ethically install in a new system. The M215 and the M250. Go ahead, click the links and see... 48 V max DC input.

Sunpower is a panel manufacturer, and their panels operate at a higher voltage than most others, making them incompatible with Enphase's microinverters. Recent generations include the E19 and E20 series (65 Voc / 55 Vmpp), the X21 series (68 Voc / 57 Vmpp). Panels older than that are obsolete, but still had a Voc too high for Enphase.

The only person lying is the one that says they can sell a functional Sunpower+Enphase installation for < $3.50 / W.

[Moe]

Just brand names?

Enphase has two products that anyone would ethically install in a new system. The M215 and the M250. Go ahead, click the links and see... 48 V max DC input.

Sunpower is a panel manufacturer, and their panels operate at a higher voltage than most others, making them incompatible with Enphase's microinverters. Recent generations include the E19 and E20 series (65 Voc / 55 Vmpp), the X21 series (68 Voc / 57 Vmpp). Panels older than that are obsolete, but still had a Voc too high for Enphase.

The only person lying is the one that says they can sell a functional Sunpower+Enphase installation for < $3.50 / W.

I am not lying, you are just jealous and completely out of line.
I sold such systems with enphase 250 for less than 3.5/w and may I add with electric panel upgrade as well...
so far the energy produced from an 11.5 kw DC STC in just 2 months in southern california is 4.2 Mega watt per hour (MWh)
those are real numbers...

please try to show some respect when speaking with a much experienced Engineer!

what are your credentials btw, what is your collage degree?

[J.P.M.]

Others may certainly do as they wish, but FWIW: As mods. have alluded/suggested in the recent past, I usually shun (ignore) rude people or adolescent behavior types except to comment on what I believe to be egregious or unsafe remarks or statements. I also shun those with skin in the game who also use this forum for a lead generator or for personal gain.