In reference to the OP, I definitely feel like there should be some community awareness of the consumption side of bitcoin mining. Whether it be investing directly in renewable sources for your energy, or indirectly assisting coalitions or whomever in getting states more active in utility-scale renewable farms.
Something to think about:
Approx 2,460kWh of energy is extracted from 1
TON of Coal.
Even the smallest mining operation is likely to utilize many multiples of that amount (a 500W system roughly every 3 months).
An off-the-cuff calc of the current network, averaging 65,000 5870s @ 180W a piece is ~12kW system, consuming ~8.5 GigaWattHours (8.5mil kWh) / month, or 3,420TONS of coal / 12,500 Barrels of Oil / 17,000 Barrels of liquified natural gas, every month.
ASICs will be more efficient, but the amount to be deployed will still have a significant power draw, and as bitcoin increases in success, will continue to draw more.
So, just thought htis was a good location to throw out the good spirit of renewables, in helping offset our personal contribution to the detriment of the air