Like the electricity price in Spain is abusive ($ 0,25 Kw/h) i'm thinking invest in renewable energy for mining LTC with GPu's.
At present I pay for 1,2 Kw/h (700 Kw month) more than $ 200 month and the net profits are only $ 110.
Some expert could recommend what it's more viable buy solar panels or windturbines.
The budget is about $ 6000 sufficient to generate 2 Kw/h constantly.
In my village the wind day average are about 12mph and the total  hours yearly sunny are about 2800.