[RE-wrenches] solar lease questions
marco at pvthawaii.com
Sat Dec 17 16:09:07 PST 2022
I've been doing PV on the Big Island since 2000.
15 kW STC DC on 7.6 kW AC is ridiculous and not atypical typical of
Sunrun's crank-out-the-design-by-some-computer-program approach. When said
program calculates a 120 percent offset, does that factor in power output
clipping? I think not. Especially on the Kona side, which is sunnier than
the east side of the island, such a DC-AC ratio is pretty much sure to clip
A LOT I'm thinking.
Our current residential electric rates here on Hawaii Island are between
42.5 to 47 cents/kWh.
On Sunday, December 18, 2022, jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:
> HI All,
> I”ve got a friend in hawaii, big island near Kona that is looking at a
> sun run lease and she’s asking me questions.
> I’m not that familiar with the electric rates nor the games that Sun Run
> is doing.
> They are pushing a 20 yr lease with the following system:
> 38 x 400 watt panels
> 2 x SE 3.8kw
> 2 x power wall
> it will offset 120% of her load
> loan is $398 month/ 20 yrs which is $95,000
> My first really big question is thats 15.2kw on 7.6kw of inverter? That
> doesn’t sound right, 2 x DC/AC ratio?
> Does it make sense to have the batteries?
> And if you paid for the system outright, what would that be in Hawaii?
> Any and all help and advice is welcome,
> or if there any installers near there, that would also be helpful.
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