[hayden55]

Originally Posted by redpoint5

Here's the most recent solar bid for my parents:

7.8 kW Solar Proposal
Your Annual Electricity Use 10,680 kilowatt-hours
Annual Solar Production 9,693 kilowatt-hours
20 x Hanwha Q.cell 390-watt mono solar modules with SolarEdge (1) SE7600H-US w/ (20) P400 DC Optimizers

Total System Cost $23,450.00
Oregon Solar Rebate $5,000.00
Utility Incentives $9,000.00
Your Cost $9,450.00 = $1.21/watt

Bid from same company for my house:
7.02 kW Solar Proposal
Your Annual Electricity Use 7,089 kilowatt-hours
Annual Solar Production 7,101 kilowatt-hours
18 x Hanwha Q.cell 390-watt mono split cell solar modules with SolarEdge SE6,000H-US (18) P400 DC Optimizers

Total System Cost $17,306.00
Oregon Solar Rebate $1,404.00
Utility Incentives $2,106.00
Your Cost $13,796.00 = $1.97/watt

Note that my parents is ground mount, and my house is roof mount. Ground mount has higher associated cost due to more extensive racking and concrete pouring.

Do you have a break down on their hourly labor rates, inspections, permit fees, and what they are using for hourly production estimates?