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I am sure there are recent life cycle cost assessments of small scale biomass power plants since they are required for most public projects. The challenge with most small scale power plants is that the cost of the equipment and labor often outweigh fuel savings from renewable fuels.
If I recall there is a small turbine at the VA hospital in White River Junction. Small backpressure turbines require large heat demand. An example of small power generation with large heat demand is a small 500 kWe turbine at a sawmill right there across the river in New Hampshire which heats a very large number of wood dry kilns. I think it was installed in about 2000. Organic Rankine Cycle (ORC) systems are often suggested but they also have very large low quality waste heat effluent that must be justified economically. They are best applied is you already have a hot oil boiler with excess heat capacity.
We looked at a small, 500 kWe, gasifier with an internal combustion engine recently but the low cost of heat and power did not make it feasible, even with biochar as a co-product.
From: main@Biochar.groups.io <main@Biochar.groups.io> On Behalf Of Robert Lehmert via Groups.Io
Thank you, Tom, for your informative reply.