Here is a little math from my system.
Solar Investment: 64K
Yearly Saving and Income: 14K
Expected Life: 30 years
30*14K = 420K Income
420K - 64K = 356K profit over 30 years.
Break Even: 64K / 14K = 4.6 Years.
When its sunny, I'm makin money!
Wow. Wondering how this works out.
How many KW is your system?
How much of the 14K savings from your existing bill (i.e. setting your bill to zero) and how much is actual net income from the utility (for excess generation)?
I live in CA and we only get paid ~3c/kWh for excess generation beyond setting our bill to $0 over the course of a year (our bill gets offset at the nominal rate if our cumulative bill is over $0 on an annual basis).
Our solar panel system is 2.25 kW and cost $9600. We generate more electricity than we use. Our system saves us about $500/year, so it'll take us awhile to pay off our system. Assuming the historical rate of electricity increases, it'll take about 15 years to pay it off.
Here's our blog post describing our solar panels: http://bit.ly/1AZpsqb
Sorry I was not following this thread.
Here is a summary.
Initial Install $90,136.00
PA Grant -$22,500.00
Federal rebate -$27,014.00
Expansion $33,610.00
Federal rebate -$10,083.00
Total Out of Pocket $64,149.00
Srec Sales 2010 -$2,580.00
Srec Sales 2011 -$4,070.00
Srec Sales 2012 -$4,810.00
Srec Sales 2013 -$10,070.00
Srec Sales 2014 -$10,832.50
Srec Sales 2015 $0.00
Total Srec -$32,362.50
Power Saved/Income 2010 -$1,757.45
Power Saved/Income 2011 -$2,300.66
Power Saved/Income 2012 -$2,455.59
Power Saved/Income 2013 -$3,265.91
Power Saved/Income 2014 -$3,406.98
Power Saved/Income 2015 -$2226.31
Total Power Saved.Income -$15,412.90
Remaining Payoff $16,373.60 Payoff Date 5/21/2016
2015 SRECs not yet sold 15@ approx. $465.00 = $6,510.00
The system is 17.58 KW and generates about 24 to 25 MW per year.
Most of the income is from the sale of Washington DC SRECs. 1 MW = 1 SREC and DC SRECs are selling for $465.00 each right now. I live and generate in PA, but I registered my system to sell SRECs in DC before DC changed its law to prohibit it. I was grandfathered into DC.