Agenda - 03-15-2006-1 - Laserfiche WebLink

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The primary customers identified as potential energy users for a landfill gas -to- energy project at the Eubanks Road site are the County, Duke Power, and PSNC Energy, The County would primarily use power and /or waste gas heat from the electric generation gas combustion process for the proposed operations building, transfer station, and other on -site power and heating uses Given the relatively low projected on -site usage of available electrical energy, it was assumed that all electric power generated from the project would be sold to Duke Power and that the County would buy back electricity for its needs The cogeneration potential (exhaust gas heat recovery for building and /or water heating, etc.) was not factored into the project economics at this time because of the lack of a large user like a school, industrial process, or commercial building complex in the immediate area. If plans to construct a new public school complex and animal shelter in the area are implemented, the economics of landfill gas recovery should be reevaluated with respect to cogeneration of electricity and heat for these additional needs (i.e., energy demands in addition to the proposed transfer station, operations building, and other existing on -site uses already factored into this preliminary landfill gas recovery feasibility analysis). Cogeneration may potentially lower overall energy cost's while using waste heat for internal building(s) uses and providing clean, complete combustion of the waste gases. Direct sale of pipeline grade gas to PSNC Energy was considered under the high -Btu gas production alternative. The following power and gas production alternatives were considered. Option I — Power Generation using Microturbine Technology — Utilization of combined gas flow from both the North Eubanks and South Eubanks MSW Landfills Option 2 — Power Generation using Microt'urbine Technology — Utilization of gas flow from South Eubanks MSW Landfill • Option 3 — Power Generation using Internal Combustion Engine Technology — Utilization of combined gas flow from both the North Eubanks and South Eubanks MSW Landfills • Option 4 — Power Generation using Internal Combustion Engine Technology — Utilization of gas flow from the South Eubanks MSW Landfill Option 5 — Production of Pipeline Grade Gas using Pressure Swing Adsorption Technology — Utilization of combined gas flow from both the North and South Eubanks MSW Landfills Based on the projection of annual costs and revenue, a net operating loss is anticipated for each power generation option over the life of the project (2007 to 2030) Losses for Options 1 through Orange County 5 March 2006 Draft