Potential chemical weapons from living organisms. Toxins are effective and specific poisons produced by living organisms. They usually consist of an amino acid chain which can vary in molecular weight between a couple of hundred (peptides) and one hundred thousand (proteins).
1 NREL previously calculated wind farm land usage at about 85 acres per MW of capacity and capacity density of 3.0 Â±1.7 MW/km 2. 2  Yale calculated wind energy usage down to the turbine level, calculating 1-3 acres per turbine.
1 In 2007, average cost per kilowatt hour of electricity generated by utility-scale wind turbines was 4â7Â¢ per kilowatt hour.  One 10 kilowatt wind turbine system, operating at a site where the average wind speed is at least 12 mph, can generate around 10,000 kilowatts per year.