BIOETHANOL GREENHOUSE GAS CALCULATOR - HGCA

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Table of ContentsExecutive Summary ........................................................................................................ i1. Introduction ............................................................................................................ 11.1 Why is a GHG calculator required? ............................................................... 21.2 Why now? ...................................................................................................... 31.3 Scientific basis ............................................................................................... 41.4 Possible uses for the calculator ...................................................................... 42. Scope of work ........................................................................................................ 53. Who should use the calculator and why ................................................................ 54. Using the Calculator .............................................................................................. 64.1 Data Input Page .............................................................................................. 64.1.1 Data Input Help ...................................................................................... 74.1.2 Farming inputs and Yields ..................................................................... 84.1.3 Pre-processing ........................................................................................ 94.1.4 Feedstock Transport ............................................................................. 104.1.5 Processing ............................................................................................ 104.1.6 Transport to End-Use ........................................................................... 124.1.7 Calculation ........................................................................................... 124.2 Report Page .................................................................................................. 124.3 Calculations Page ......................................................................................... 145. Underlying factors and calculations ..................................................................... 165.1 Agricultural Inputs ....................................................................................... 175.2 Effects of Straw Removal ............................................................................ 175.3 Fossil Fuels and Electricity .......................................................................... 185.4 Transport ...................................................................................................... 185.5 Credits .......................................................................................................... 196. Default Bioethanol Production Chains ................................................................ 216.1 Basic wheat-to-ethanol pathway .................................................................. 216.2 Farming Inputs and Yields ........................................................................... 226.3 Pre-processing (Drying and Storage) ........................................................... 226.4 Transport to Processing................................................................................ 226.5 Processing .................................................................................................... 226.6 Transport to End Use ................................................................................... 237. References ............................................................................................................ 24Definitions and terminology ........................................................................................ 26Figure 1: Main input sheet for the calculator ................................................................. 7Figure 2: Data Input Guidance Sheet ............................................................................. 8Figure 3: Farm-level inputs - data requirements ............................................................ 8Figure 4: Pre-processing inputs, data requirements ..................................................... 10Figure 5: Feedstock Transport to Processing- data requirements ................................ 10Figure 6: Processing / Conversion, data requirements................................................. 11Figure 7: Ethanol Transport to end-use, data requirements ......................................... 12Figure 8: Calculator Reporting Screen - calculation outputs ....................................... 13Figure 9: Calculations Page ......................................................................................... 15Figure 10: Basic assumptions for default wheat to ethanol pathways (LCVP, 2004) . 21Table 1: Farming share of energy and GHG emissions for ethanol production ............ 2
Table 2: GHG emission factors for fertilizers, seeds and pesticides ........................... 17Table 3: Effects of straw removal on fertilizer requirements ...................................... 18Table 4: GHG emissions factors for fossil fuels and electricity .................................. 18Table 5: GHG emissions factors for freight transport ................................................. 19Table 6: Default farming inputs and yields.................................................................. 22Table 7: Default fuel inputs and surplus electricity outputs ........................................ 23
Page 1: BIOETHANOL GREENHOUSE GAS CALCULATO
Page 5 and 6: 11. IntroductionA recent lifecycle
Page 7 and 8: 3recovery (LCVP report; Rickeard et
Page 10 and 11: 64. Using the CalculatorThe bioetha
Page 12 and 13: 8DATA INPUT GUIDANCEThe table below
Page 14 and 15: 10PRE-PROCESSING(DRYING AND STORAGE
Page 16 and 17: 12• Surplus electricity (kWh/t et
Page 18 and 19: 14Clicking the BACK button takes th
Page 20 and 21: 165. Underlying factors and calcula
Page 22 and 23: 18kg of nitrogen fertilizer (as N)
Page 24 and 25: 20As in the LCVP study, imported so
Page 26 and 27: 226.2 Farming Inputs and YieldsFor
Page 28 and 29: 247. ReferencesBauen, A., Howes, J.
Page 30 and 31: 26Definitions and terminologyThe fo
Page 32 and 33: 28Climate Change (UNFCCC definition
Page 34 and 35: 30Kyoto Protocol is the Protocol, d
Page 36 and 37: 32continued supply depends, in many
Page 38: 34In this case ‘delivery’ is as

BIOETHANOL GREENHOUSE GAS CALCULATOR - HGCA

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