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GGRN began development of the patent-pending, Greensteam process in 2007, constructed a demonstration plant near Bakersfield, California in 2010, and is in the final stages of testing and commercializing the Greensteam technology.
GGRN's business model is to license the technology to project partners who will build, own and operate Greensteam plants.
What makes Greensteam revolutionary is that the process is projected to be 20% more efficient than any current biomass combustion technology while producing 80% less air emissions without employing costly pollution control equipment. The ultra-low air emissions are projected to be USEPA Best Available Control Technology (BACT) for biomass combustion. Greensteam is potentially the only technology capable of meeting new, even more stringent EPA air emissions standards for biomass combustion.
- 20% Less Operating Cost than Current Biomass-to-Energy Plants; up to 30% less than fossil fuel-fired plants
- Ultra-low NOx and Volatile Organic Compound (VOC) emissions capable of meeting stringent permitting standards
- Ability to handle a variety of renewable carbon-neutral biomass fuels including forest, agricultural and municipally derived fuels.
- ½ the capital cost of emerging gasification solutions
GGRN believes that the sweet spot for the Greensteam process is:
- Small to medium applications (200 MMBTU/hr-1000 MMBTU/hr or approximately 10-50 MWe equivalent)
- Applications requiring process steam or combined heat and power
- Locations with high energy costs, stringent regulatory compliance requirements and policy incentives favoring renewable energy
- Locations with access to sustainable sources of waste or residual biomass available from forest, municipal or agricultural sources
- Ten-plus year energy sale contracts with reliable purchasers.
This capitalizes on Greensteam's capital cost advantage vs. developing gasification and its emissions advantage vs. traditional combustion. Moreover, projects in this size range are both economically viable and supportable with sustainable biomass supplies. Examples include:
- Steam for Enhanced Oil Recovery
- Steam for Chemical or Minerals Processing
- Paper Mill Bark Boiler Retrofits
- Cogeneration for Food Processing Plants
- Repowering Coal Fired Utilities
- Cogeneration for Distillers
- Industrial Parks
The Greensteam biomass-to-steam process is particularly advantageous in locations where disposal of waste biomass is an issue, renewable energy is encouraged, and air quality is a major concern. Replacing fossil fuel-derived energy with Greensteam creates a net reduction in carbon dioxide emissions which has an increasingly important monetary as well as environmental value.