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Sustainable Energy Ireland

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Sustainable Energy Ireland

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  1. Sustainable Energy Ireland Exploiting the Resource David Raubenheimer March 2004

  2. Fibrowatt Overview • Developer owner operator • Power from agricultural residues • 65 MW operational • 2,650,000 MWh produced, 3.7 million tonnes fuel • Overview of Fibrowatt’s plants

  3. The Carbon Cycle CARBON (CO2) Flue Gases ENERGY BEDDING & FEED ELECTRICITY MANURE BIOMASS Ash NUTRIENTS

  4. Power Stations

  5. Fibropower Commissioned Jul 1992 Design output 12.7MW Burns 150,000 t/yr of poultry litter & other biomass

  6. Fibropower - Operational Experience • Development of know-how • Fuel characterisation difficult • Biomass knowledge fragmented • No available standards • Now runs exceptionally well • New fuels trialled

  7. Fibrogen Commissioned Nov 1993 Design output 13.5MW 3-5 yr Govt contract for 85,000 t/yr of meat & bone meal

  8. Fibrogen • Commercially similar to Fibropower • 8% larger • New fuel handling – design trials • Technically very successful • Achieves 90 – 100% availability • Converted to burn MBM

  9. Fibrothetford Commissioned 1998 Design output 38.5MW Burns 460,000 t/yr of poultry litter & other biomass

  10. Fibrothetford • Significant scale up – 3x • New fuel storage – design trial • Environmentally sensitive site • Environmental standards changed • Construction contractors more cautious • Scale up caused technical problems • Now running well

  11. How it Works – in the plant

  12. Technology – Current Plants

  13. Fuel Pits at Fibrogen

  14. Thetford Fuel Hall

  15. Fuel Trucks Unloading

  16. Fibrogen - MBM Conversion

  17. Inside the Boiler

  18. Technology - Results • Poultry litter burns very well • Characterisation is difficult • Handling needs care • Combustion performance • Certain arrangements excluded

  19. Technologies Reviewed • Have reviewed a number • Stepwise development strategy • Fluidised Bed • Gasification • Digestion • High tech may be counterproductive

  20. What a Project Needs • Available, contactable & characterised fuel supply • Affordable electrical connection • €4+ million to develop • 2 - 5 yrs development, 2 yrs construction • Incentivised construction contractors • Available land and local support

  21. What a Project Needs (2) • Power Purchase Agreement • Bankable • Long term (construction +15 years) • Technology specific • Ash fertiliser sales routes • Abundant political support

  22. Summary • 2,650,000 MWh • 3,700,000 tonnes of fuel • Significant teething problems overcome • Structure new market with care • Particularly the Power Sale arrangements • Consistent and broad political support