Kallog
the example system I refferenced that cost $8220.00
didnt include any of the available government tax credits.
the $0.18 cents per kWh credit is not a government subsidy.
the power companies charge more for green energy as shown in the below link where consumers can purchase green energy blocks of 100 kWh to support environmentaly friendly power generation such as solar power.
https://customerservice.southerncompany.com/corporate/green_residential_signup.asp in the example of a actual electrcity bill posted above if the consumer purchased a 100 kWh block for every 100 kWh he used durring the month he could purchase 15 blocks
because he used 1564 kWh that month.
the purchase would cost him either $3.50 or $4.50 per 100 kWh block depending on the plan he chooses.
he would pay either $52.50 or $67.50 extra on his bill.