Ditto. My brother-in-law installs home windmill generators for roughly $12,000 USD that start paying for themselves after 6 years, and in most cases, you begin to sell power back to the power companies. 
I might add that he's a conservation but we all know that evil conservatives are not environmentally friendly.. 
Would you have a link on that?
(I live in a windy place, but never found a set cheap enough)
How many KW etc????
Anyway, getting back to Alfalfa, do you guys know how far north it can be grown? Where I live, red clover is a bit on the limit, but I have mastered it, and it is wet enough for Alfalfa. pH is also fine, I have organic soil with something up to 6.4, which is considered good, - and rising.
Maneure (from cattle) as well as compost, I have in ample quantity for several hectars of Alfalfa.
Actually, I have been growing quite a bit (and increasing) of silage from maneure and clover + grass exclusively, getting the same crops as by fertilizing.
Now, with rising fertilizer prices, this all becomes more deasible, - LOL, my stock of cow maneure is actually worth some 25.000 $!!!!!
Anyway, in our environment (whereabouts I live), every acre will save some ....say 250$ per year...in fertilizer, if a mastery of this is achieved. But few have done it yet. Experiments are costly, and this is all done through trial....and error.
And BTW, silage from red clover stinks in a funny way. But cattle love it...
