Originally Posted by Debby36
I have been to several forum sites asking about wind energy without results. I am looking for information on affordable systems (under $10,000). I would especially like to find a system that lends itself to do it yourself installation.
Fun with numbers. . .
number of years to break even [BE]=
installed system price[IP]/(yearly on-the-grid utility cost[GC] - yearly repair/maintenance for the system[YRM]).
so BE = IP/(GC-YRM)
Let's say IP = $10,000, GC is $1200/yr and BE is 10 years, max.
YRM= GC - (IP/BE) = $1200 - ($10000/10) = $200 per year, max.
The avg. house takes 1 kw all the time but the batteries need to be able to supply >10 kw for hours at a time. For batteries, you get 50% to 90% of the energy out of them that you put into them.http://www.windsun.com/Batteries/Battery_FAQ.htm#Lifespan%20of%20Batteries
Lead-acid battery lifetimes, from the Web:
lifetime charge/discharge cycles
10 = number of samples
150 = min sample value
1000 = max sample value
465 = sample avg.
400 = sample median
200 = sample mode
50% lasted between
Deep cycle batteries may last longer.