First I want to thank people who contribute to this board, I've learned a tremendous amount by just reading these forums over the past year - thank you. I started with the dummies guide, and went directly to reading this board.
I live in Northern California, East Bay and it can get intensely hot and sunny in the summer months. I'm in the process of taking proposals for Solar on my primary residence. Looked into the leasing but decided purchasing was a better option. Some specs about our home: 2 story house, tile roof and located in walnut creek, CA. Our annual energy usage is between 11-15kWh (last three years) and I'd like to try and offset my energy with 100% solar, if possible. I have multiple roofs so the quotes presented have panels on both the east and west facing roof. I've spoken with multiple companies and received multiple quotes, all which cover 100% off my energy needs and narrowed it down to the 3 quotes below:
Option 1 (Company A): [/w Optimizers]
(26) Sunpower SP 320 panels = 8,320W (1,100KW monthly)
Inverters: SE7600A-US w/ Optimizers
26 split between two roofs
Price: $35,680 before $500 coupon, $500 Armed Service coupon, $1,360 state, $720 Dealer special = $32,600 then 30% federal = Net = $22,820
Price/Watt is $3.91/w before federal and $2.74/W after federal
Option 2 (Company B) [/w Optimizers]
(33) SolarWorld SW290 Mono = 8,378 (1040KW monthy)
Inverter: SE7600A-US (240v) w/ Opimizers
also split between roofs
Price: $30,152 before 30% federal = Net = $21,107
Price/watt is $3.59/w before federal and $2.51 after federal
Option 3 (Company C) [/w Microinverters]
(24) Sunpower SPR-X21-345-C-AC = 8,280 (11,573KW monthly)
(24) Micro inverters - 96 cell GEN 3.0-HV-208/240v
12 on each roof.
Price: $35,500 before 30% federal = NET = $24,850
(there might be an additional $1,500 if my employer is still part of the affiliate program - TBD)
Price/watt is $4.28/w before federal, and $3.00/w
Warranties for:
Option A: 25 years (SE inverter would be extended to 25)
Option B: 20y Product, 25y production, inverter 12y + $500 for 25Y
Option C: is from Sunpower direct, 'assuming' 25y bumper-2-bumper
Option B is the cheapest with 33 Solarworld Panels, gotten from an independent dealer with excellent yelp reviews. Option A is also interesting in that its only 26 panels and made by SunPower. I'm currently debating, micros vs. optimizers and pairing older SPR panels with SE optimizers and Inverter.
Any input would be appreciated. Thanks