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Environmental Wood SupplyEnvironmental Wood Supply was created in 2000 by Ever-Green Energy and Duke Energy Generation Services to fuel the St. Paul Cogeneration biomass plant. |
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Environmental Wood Supply (EWS) was created in 2000 by Ever-Green Energy and Duke Energy Generation Services to locate and purchase clean wood waste to fuel the St. Paul Cogeneration biomass plant. The wood waste includes tree trimmings and clean industrial and construction debris that would otherwise be openly burned or disposed of in other ways. Ever-Green Energy manages the City of Saint Paul's Wood Recycling Center located just a few miles from the CHP plant. Managing this site ensures a steady supply of boiler fuel and a place to temporarily store wood waste delivered by suppliers. Trucks transport the boiler fuel to the CHP plant over a 12- to 16-hour period seven days a week. How it WorksWood suppliers and producers pay EWS to drop off logs and brush. EWS pays vendors who drop off wood waste that has been processed into mulch. Workers then grind or screen the product once again in a final sizing process before transporting it to the CHP plant to be fed into the boiler. EWS also operates equipment that allows it to perform grinding operations off-site, upon request, when an accumulation of wood waste makes it necessary, such as in an area where trees have been damaged or downed by a storm. PerformanceBiomass fuel in the form of wood waste is working well in St. Paul. It's a viable fuel that is supporting the local economy by keeping a valuable renewable resource out of the waste stream, creating jobs in the recycling and transportation industries and keeping energy dollars in the local community. The availability of wood waste also helps to stabilize fuel prices as the price of many other fuels has become increasingly volatile. The environmental benefits are a significant plus. Using wood waste as fuel has reduced District Energy's use of coal by more than 60 percent as the thermal energy is now delivered by the CHP facility. Reduced fossil fuel usage has resulted in significantly lower carbon dioxide, sulfur dioxide and particulate emissions. Taking into account a CHP facility is twice as efficient as a conventional electricity-only power plant, results in a win-win situation for District Energy, its customers and the community. As District Energy continues to transition from fossil fuels to renewable fuels, it's clear that Environmental Wood Supply will play an even greater role in the company's future. |
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