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Charlotte Hatto NORTH ENERGY ASSOCIATES LTD Life Cycle Assessment for Project Kade Wetland Biomass to Bioenergy AMW.

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Presentation on theme: "Charlotte Hatto NORTH ENERGY ASSOCIATES LTD Life Cycle Assessment for Project Kade Wetland Biomass to Bioenergy AMW."— Presentation transcript:

1 Charlotte Hatto NORTH ENERGY ASSOCIATES LTD Life Cycle Assessment for Project Kade Wetland Biomass to Bioenergy AMW

2 Life Cycle Assessment – What is it? Environmental impacts of a product over its lifetime Defined scope and methodology Provides answer(s) to specific question(s)

3 What are the environmental impacts of this product? What if? –‘counterfactual’ scenarios

4 Life Cycle Assessment – Why? LCA checks that processing wetland biomass into a biofuel does actually reduce GHG emissions - and quantifies the savings against standard wetland management UK commitment to reduce Greenhouse Gas (GHG) emissions provides incentive to use biomass for heating supports market price for biomass

5 Scope Greenhouse Gases (GHGs): Carbon Dioxide, CO 2 (from fossil fuels only) Methane, CH 4 Nitrous Oxide, N 2 O Primary Energy GHG & Energy for manufacture of plant & equipment Counterfactuals: Traditional methods of wetland management Heat from coal AMW

6 Use Briquetting: 5 main stages DeliveryHarvesting PROCESSING Biomass mixer Rush - pressed Press fliud Press cake, agbagged Reed – agbagged charred Chipped scrub AD and CHP plant Briquetting

7 Expected significant GHG emissions Direct Fuel Use Transport Harvesting Processing Briquetting Plant & Machinery Transport Vehicles Harvesting Equipment Processing Equipment

8 Combustion CO 2 emitted not included (as ‘biogenic’) – both briquettes and biogas CH 4 and N 2 O emissions are included Wood burner / Boiler efficiency extremely important as it affects the GHG emissions per MJ delivered Efficiency affected by moisture content and feedstock quality

9 Interim Results GHG emissions per MJ delivered heat Wetland Biomass ~ 34g eq.CO 2 per MJ Counterfactual ~ 156g eq.CO 2 per MJ Saving ~ 78%

10 60% GHG saving when GHG emissions for cultivation, processing and transport compared to EU average fossil fuel heating emissions Equates to life cycle GHG emissions < 34.8g CO 2 /MJ* Sustainability requirements for land-use, including biodiversity and carbon stock criteria 2015 Biomass Sustainability Requirements * 3.6MJ = 1kWh

11 Guaranteed payments based on heat generated from biomass boilers between 2p and 7p per kWh for commercial 11p per kWh for domestic Stringent requirements on technology & installation 2015 - sustainability requirements for supplied biomass

12 Summary Current results show savings are in the order 80% within the target set for the RHI The majority of GHG emissions from Harvesting & Processing stages GHG emissions from transportation locally are not highly significant Savings % highly dependent on the counterfactuals

13 Summary  Land management required in any case  Harvesting improves land management  No land use change or food crops displaced  Little current demand for arisings  Low drying requirement  Low GHG emissions

14 Charlotte Hatto NORTH ENERGY ASSOCIATES LTD Life Cycle Assessment for Project Kade Wetland Biomass to Bioenergy thank you for listening AMW


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