I plan to use green energy as well but with wind turbine, solar panel is good but the price per watt produced is too high, between 1~2 euro while the wind turbine come with 0.50~1 euro the watt.
Ya, I've been doing that for a while...
https://bitcointalk.org/index.php?topic=1783328.0The problem is that wind energy is even more unreliable than solar, not to mention the upkeep and maintenance involved is quite a bit more than solar. I found that for mining purposes, wind energy is nearly useless and with the technology available today I honestly think you are better off just using energy from the grid. The only time wind turbine energy at a small scale would be beneficial in my opinion is to charge batteries where grid energy is unavailable. I'm sure this will change someday as the technology improves, but for home users it just isn't there yet.
If you're considering any type of alternative energy powered mining operation, the main expense is going to be batteries. Grid tying eliminates that, which is why my earlier comment quote below makes a ton of sense.
So instead of looking at mining as a problem that needs to be solved with a ton of solar panels, look at it as a solution for how to benefit from excess energy production.