Rofl..... fuck yea they do.... more then you will ever know... Half of the power for your grow room prolly comes from a power plant burning coal...
Coal is primarily used as a solid fuel to produce electricity and heat through combustion. World coal consumption was about 6,743,786,000 short tons in 2006 and is expected to increase 48% to 9.98 billion short tons by 2030. China produced 2.38 billion tons in 2006. India produced about 447.3 million tons in 2006. 68.7% of China's electricity comes from coal. The USA consumes about 14% of the world total, using 90% of it for generation of electricity.
6,743,786,000 short tons / 365 = 18476000 short tons world wide / day (2006)
US use is 14% of that or 2587000 short tons daily (2006)
second reference:
Coal mining in the United States is a major industry, and reached an all-time high of 1.06 Gt (1.17 billion short tons) in 2008, being mined in 25 states. The US was a net exporter of coal in 2008, with the surplus of exports over imports equalling 4% of the total mined.
1.17 billion short tons = 1 170 000 000 short tons or 3205400 short tons per day
factoring in the export ratio, that is 3205400/1.04 = 3082000 short tons consumed in the US daily (200
