1 / 15

ifeu – Institut für Energie- und Umweltforschung Heidelberg

ifeu – Institut für Energie- und Umweltforschung Heidelberg. in cooperation with. Expert Meeting on LCA GHG methodologies for bioenergy beyond biofuels EEA Copenhagen, 10 June 2008 Beyond biofuels methodological and data issues for bioenergy current work in Germany Horst Fehrenbach.

rob
Download Presentation

ifeu – Institut für Energie- und Umweltforschung Heidelberg

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ifeu – Institut für Energie- und Umweltforschung Heidelberg in cooperation with Expert Meeting onLCA GHG methodologies for bioenergy beyond biofuels EEA Copenhagen, 10 June 2008 Beyond biofuels methodological and data issues for bioenergy current work in Germany Horst Fehrenbach

  2. … more than biodiesel and ethanol (Solid) Biomass is in use since the Stone Age. Even today 10 % of world energy use is solid biomass – traditionally applied (cooking and heating).Today’s technologies are highly efficient. Biogas is much notably presumed to be efficient and environmentally sound.And can be even as fuel for transport.

  3. … more than biodiesel and ethanol  However biomass for electricity and heat has to be judged by the same measure as biofuels for transportation.  But there are a number of special issues concerning bioenergy fuel.

  4. Need for action in Germany The Renewable Energy Act (EEG): benefits several types of renewable energy, so biomass for energy use. The currently amended version empowers the government to pass a regulation defining sustainable production and use of biomass. Analogously to the Biomass Sustainability Regulation (biofuel for transportation)= analogously to RES Directive

  5. Need for action in Germany Ministry for Environment (BMU) and Federal Environment Ageny (UBA) requested IFEU and Öko-Institut to adapt the biofuel GHG methodology for biomass for energy and to develop default values.

  6. Selected solid biomass Wood • Chopped wood and/or pellets harvested from Short rotation forestry (SRF) • Pellets - from thinning or other forestry measures - from wood-working co-products (e.g. saw-dust) Ligno-cellulosic materials • Straw and stalks from cereal production organic waste

  7. Selected biogas systems Produced biomass • Maize Silage (EU) Co-products • Stillage from EtOH production organic waste • Biowaste (households, restaurants etc.) • Manure

  8. Selected liquid biofuels The ones yet considered within the BSR ( rapeseed oil, soybean oil, palm oil But also  Jatropha oil

  9. Selected technique for usage Solid biomass: • CHP • (Stirling motor) • (gasification) Biogas • CHP (gas motor) • upgrading to biomethane and diverse use Liquid biofuels • CHP

  10. Differences in GHG methodology compared to liquid biofuels f.tr. (RES, BioNachV) Above all: no need for a fundamentally different approach. However there is a number of specific aspects. • Taking for example: • appropriate time scale (longer term growing cycles), • Special land use change issues concerning carbon stock,(if forestry technology is changing or SRF is implemented) • co-products - energy wood harvested by thinning, other forest co-products- agricult. residues (e.g. straw is waste acc. to RES) • Waste: alternative treeatment/use/non-use (e.g. manure)

  11. Differences in GHG balancing methods compared to liquid biofuels Most decisive: the “Use Phase” For liquid biofuel for transportation minor (negligible) issue For energy use: efficiency is the decisive parameter. Connected issue: what kind of energy is replaced?  system boundary  reference system

  12. System boundary Starting point if biomass is waste Land use change e.g. natural forest to short rotation forest Co-products?  allocation Production of biomass (forestry, agriculture) Alternative treatment or use or non-use Transport of biomass Co-products?  allocation Conversion process(where required) Transport ofconverted / processed biomass Use phase(which way, which efficiency) Requirements for replaced reference system power heat

  13. What reference system Electricity: regional differentiation:  is it fair to have different references per country?  „better use biomass in DE, UK than in FR, SE“ Average or marginal or …?  average mix: is this an appropriate reference ?  marginal effect: can this be defined in an accurate way? Model?

  14. What reference system example: electricity from wood compared with diverse national averages Average mix from several countries

  15. Default values? First: we are on the way to figure out the bunch of sensitive parameters and the bandwidth due to the number of open options.

More Related