WK, An 80% efficiency is achievable if you are dealing with a feedstock that has minimal lignin. Certain food processing wastes will fall in this category. However, so long as you are dealing with straws or manure, 50% is about the best that can be done. Our experience with woody materials indicates that best case is about 35% Jane Turnbull Gasification List Moderator: Tom Reed, Biomass Energy Foundation, tombreed@attbi.com Biomass = Energy Foundation, www.woodgas.com List-Post: <mailto:gasification@crest.org> List-Help: <mailto:gasification-help@crest.org> List-Unsubscribe: <mailto:gasification-unsubscribe@crest.org> List-Subscribe: <mailto:gasification-subscribe@crest.org> - Gasification List Archives http://www.crest.org/discussion/gasification/200202/ Bioenergy 2002 http://www.bioenergy2002.org/ 200 kWe CHP Discussion http://crest.org/discussiongroups/resources/gasification/200kWCHP.html Gasification Reference http://www.crest.org/articles/static/1/1011975339_7.html >