.....About COPYRIGHT CONDITIONS
The documents, tables and figures presented here in reversed chronological order can be freely used and reproduced providing that:
1. The source is duly acknowledged stating:
2. The tables and figures, if copied from the original documents, are not altered in any way.
"Well-to-Tank Report” Version 4.a
JEC Well-To-Wheels Analysis
(Report EUR 26237 EN - 2014)
- WTT Report (Version 4.a)
- WTT Appendix 1 (Version 4.a) – Conversion factors and fuel properties
- WTT Appendix 2 (Version 4.a) – Summary of energy and GHG balance of individual pathways
- WTT Appendix 4 (Version 4.a) – Description, results and input data per pathway
JEC Biofuels Programme
“EU renewable energy targets in 2020: Revised analysis of scenarios for transport fuels”
(Report EUR 26581 EN – 2014)
JEC “WELL-to-WHEELS Report” Version 4.a
(Report EUR 26236 EN - 2014)
"Effect of oxygenates in gasoline on fuel consumption and emissions in three Euro 4 passenger cars”
(Report EUR 26381 EN - 2014)
"Well-to-Wheels Analysis of Future Automotive Fuels and Powertrains in the European Context” Version 4
(Report EUR 26028 EN - 2013)
- WTT Report (Version 4)
- WTT Appendix 1 (Version 4) – Conversion factors and fuel properties
- WTT Appendix 2 (Version 4) – Summary of energy and GHG balance of individual pathways
- WTT Appendix 3 (Version 4) – Energy requirement and GHG emissions for marginal gasoline and diesel fuel production
- WTT Appendix 4 (Version 4) – Description, results and input data per pathway
- WTT Appendix 5 (Version 4) – References
- TTW Report (Version 4)
"Well-to-Wheels Analysis of Future Automotive Fuels and Powertrains in the European Context” Version 3c
(Report EUR 24952 EN - 2011)
- Well-to-Tank Report Version 3c
- Tank-to-Wheels Report Version 3c
- Well-to-Wheels Report Version 3c
- Well-to-Tank Appendix 1 Version 3c – Description of individual processes and detailed input data
- Well-to-Tank Appendix 2 Version 3c – Description and detailed energy and GHG balance of individual pathways
- Well-to-Tank Appendix 3 Version 3c – Energy requirement and GHG emissions for marginal gasoline and diesel fuel production
- Well-to-Tank Appendix 4 Version 3c – Step-by-step input data for individual pathways
- Well-to-Tank Appendix 5 Version 3c – References
- Tank-to-Wheels Appendix 1 Version 3c – Vehicle retail price estimation
- Well-to-Wheels Appendix 1 Version 3c – Summary of WTW Energy and GHG balances
- Well-to-Wheels Appendix 2 Version 3c – WTW GHG Emissions of Externally Chargeable Electric Vehicles
(Report EUR24770EN - 2011)
JEC Biofuels Programme - Standard Presentation
JEC-WTW results VERSION 3
Calculations of GHG and energy balances for a new WTW Version 3 have been recently completed. Main changes concern biofuels with modified and new pathways for ethanol, bio-diesel and biogas.
The full WTT and WTW reports are in preparation and will be posted here in due course but, because of the current interest in these pathways, JEC decided to publish the main results at this point. The following documents have been made available since November 2008:
Updated version of WTT Appendix 2 giving the updated energy and GHG balance of all pathways: WTT App 2 v30 181108.pdf
Updated WTT Appendix 4, consisting of 5 Excel workbooks detailing the input data for all pathways
Updated TTW report and TTW App 1 with updates regarding Diesel technologies
It is worth highlighting that JEC input data are relevant to the European Commission's Calculations of GHG emissions from biofuels
A spreadsheet (see BioF Action at the Institute of Energy) contains the subset of the current JEC input-data database, which is relevant to the calculation of default emissions for Biofuels, using the methodology specified by the European Commission in the draft EU Directive on the promotion of the use of energy from renewable sources. The methodology used to account for co-products is significantly different, leading to different energy and GHG balances.
The database of input data is updated occasionally, when we find more accurate or up-to-date figures. Therefore the default greenhouse gas savings calculated from the latest data may not correspond to those quoted in Commission’s working documents using a "snapshot" of the database at some past date.
Neither WTW results by JEC nor the default GHG savings in the RED Directive include land-use change
Increased demand for crops resulting from their use in Biofuels is likely to lead to an expansion of cropped area at the expense of other land uses, as well as to more intensive production on existing cropland. This can happen directly, by planting crops for Biofuels on pasture or natural land, or indirectly, by displacing food production ("Indirect Land Use Change). The change in land use and the intensification can be expected to increase GHG emissions. However, the scale of the increased emissions is very uncertain and controversial. Therefore JEC has not included them in any of the results presented here, which therefore represent only the "direct emissions" attributed to Biofuels production.
WTW Version 2C – March 2007
Version 2c of March 2007 replaces version 2b (May 2006) and corrects encountered errors:
- Most significantly: changes in the cost data for the "ethanol from straw" pathway
- Other minor corrections affect the GHG balance of biodiesel pathways and the cost data for the "ethanol from wood" and some hydrogen pathways
There are 10 documents available for download, offering various levels of information/data detail:
- A slide pack summarises the main results and messages.
The Well-to-Wheels (WTW) report provides and integrated analysis of the complete pathways in terms of energy, GHG emissions, costs and potential availability of alternative fuels. Its two appendices cover in more detail:
- Energy and greenhouse gas balances for all pathways
- Cost data and calculations
The Well-to-Tank (WTT) report details the WTT portion of the pathways, including cost and availability estimates. There are three WTT appendices covering:
- Individual processes and input data
- Detailed energy and GHG balances for individual WTT pathways
- Energy requirement and GHG emissions for gasoline and diesel fuel production
- The Tank-to-Wheels (TTW) report describes the vehicle configurations and performance. The appendix gives details on vehicles retail price estimation.
Well-to-Wheels Master Presentation
WTW Version 2b - May 2006: “Availability and Cost of Biomass for Road Fuels in EU”
The second edition of the well-to-wheels study was released in May 2006. Compared with the first issue of the study, increased attention has been given to biofuel options.
Consequently, it was felt valuable to gain input and discussion from other expert groups, including authors of other recent studies, to compare information, test the reliability of the assumptions on the JEC study, and find new information to reduce the existing areas of uncertainty.
Enlosed the proceedings of the Biofuels Workshop held in May 2006.