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Well, first bid is complete. They quoted a much larger system than I had originally expected. 10.4 kW 30 panel system (Hanwha duo g5 325 Mono). I asked why not poly, and he said the cost savings aren't there and hardly anyone makes them. AP System YC600 dual microinverter x15.
$31,558 gross cost parts and labor = $3.03 per installed watt.
1. Pretty much needs to be ground mount because permitting on a manufactured home is a 60/40 gamble. That adds $0.30 - $0.40 per kWh, or about 12%.
2. Oregon law precludes series inverters if solar is installed on a habitable structure. That means this contractor has only been installing micros and optimizers, so the quoted cost was for one of those even though a series inverter is acceptable on a ground mount. I didn't follow his logic on that...
3. Array would be approximately 50 feet by 10 feet and a line trenched about 150ft to the house.
Should qualify for $14,000 in upfront incentives or a total bill of $17,558. = $1.69 net cost. Federal tax credit of 26% should bring that down to $12,993, or $1.25 net cost.
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