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All of this sounds great, but at what price ($/kW)? I am currently working on a project where the biosolids from a wwtp are incinerated as a disposal method rather than landfilling. To make it a renewable green energy project, waste heat boilers were added along with a 3MW steam turbine. Cost for the renewable energy portion is $7.33/watt. Rather pricey considering a landfill gas to energy project would typically be closer to $3/watt. At least the fuel is free (kinda). On Thu, Jan 20, 2011 at 11:57 AM, Humphrey,Stephen R <[log in to unmask]>wrote: > As the world attempts to wean itself from fossil fuels — a result of the > converging desires to combat climate change, improve energy security, and > create green jobs — renewables such as the sun, wind, water, and hot rocks > will play a larger role. So will energy sources, such as nuclear and natural > gas, that are cleaner than the current favorites, coal and oil. The question > is: Can any of these resources — or even all of them put together — begin to > approach the scale needed to transform the world’s energy supply? And even > if the world’s economies can muster the resources and willpower to wean > themselves off fossil fuels, how many decades will it take? And can we move > fast enough to stave off the potentially calamitous effects of climate > change? > > > > > http://e360.yale.edu/feature/green_energys_big_challenge__the_daunting_task_of_scaling_up_/2362/ > > > > -Steve > > Dr. Stephen R. Humphrey, Director, > School of Natural Resources and Environment, > Box 116455, 103 Black Hall, University of Florida > Gainesville, FL 32611-6455 USA > Tel. 352-392-9230, Fax 352-392-9748 > http://snre.ufl.edu > > >