Ex-Ante Carbon balance Tool

FAO

Ex-Ante Carbon balance Tool

EX-ACT – Guidelines, Tool version 9

Year of publication 2022

Place of publication Rome, Italy ;

Pages 200 p.

Author FAO

Publisher FAO ;

Product type Book (stand-alone)

ISBN 978-92-5-136233-4

Edition Second edition

Full item page

To cite or share https://doi.org/10.4060/cc0142en

Synopsis (short abstract) This document presents the methodology used to build the EX-Ante Carbon Balance Tool version 9 (EX-ACT). It describes in detail the main logic behind the tool, the tool structure, and the underlying equations and parameters used to calculate the carbon balance. EX-ACT is a land-use-based accounting system developed by the Food and Agriculture Organization of the United Nations (FAO) to evaluate the effects of the interventions in agriculture on greenhouse gas (GHG) emissions and carbon stock changes expressed as carbon balance. The carbon balance comprises changes in GHG emissions and carbon stock changes in the five quantifiable carbon pools: above-ground biomass, below-ground biomass, litter, deadwood and soil. The current version of EX-ACT is primarily based on the Intergovernmental Panel on Climate Change (IPCC) reports "Refinement to the 2006 Guidelines for National Greenhouse Gas Inventories" (2019) and "Supplement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories: Wetlands" (2014), complemented by other scientific research.

Cite this content as:

FAO. 2022. Ex-Ante Carbon-balance Tool | EX-ACT – Guidelines. Second edition – Tool version 9. Rome.

https://doi.org/10.4060/cc0142en

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Language English

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The Carbon Balance of the World Bank-financed Land Husbandry, Water Harvesting and Hillside Irrigation (LWH) Project of the Government of Rwanda: Application of the EX-Ante Carbon-balance tool (EX-ACT)
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Agriculture can play an important role in climate change mitigation while contributing to increased food security and reductions in rural poverty. The Ex-Ante Carbon-balance Tool (EX-ACT) can estimate the mitigation potential of rural development projects generated from changes in farming systems and land use. The study presents and discusses the EX-ACT analysis performed on the World Bankfinanced Land Husbandry, Water Harvesting and Hillside Irrigation Project of the Government of Rwanda. Estim ates of the impact of project activities on greenhouse gas emissions and carbon sequestration demonstrate that the implementation of the LWH project will provide additional environmental benefits by helping to mitigate climate change. Thus it reflects possible synergies between mitigation and rural development goals through a watershed approach.
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The 2030 Agenda and Paris Agreement tied the knot between sustainable economic development and a climate-resilient, low greenhouse gas (GHG) emissions future. Moving forward, accounting for potential changes in GHG emissions will be a vital component of any agricultural investment, project, or policy proposal under consideration by any country, institution, or organization. To support the international community’s efforts with quantifying changes in GHG emissions, the Food and Agriculture Organization of the United Nations (FAO) developed the Ex-Ante Carbon-balance Tool (EX-ACT). Based on the Intergovernmental Panel on Climate Change (IPCC) methodology, EX-ACT provides its users a consistent way of estimating and tracking the impact of agricultural, forestry, and other land-use (AFOLU) investments and policies on GHG emission levels. EX-ACT is a free, open-source, Excel-based model and is available in all UN languages, as well as Bahasa, Vietnamese, Portuguese, and German.
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EX-Ante Carbon-balance Tool (EX-ACT) 2017

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EX-Ante Carbon-balance Tool (EX-ACT) is a tool developed by the Food and Agriculture Organization of the United Nations (FAO). It is aimed at providing ex-ante estimates of the mitigation impact of agriculture, forestry and fishery development projects, estimating net Carbon (C) balance from greenhouse gas (GHG) emissions and C sequestration. EX-ACT is a land-based accounting system, measuring C stocks, stock changes per unit of land, and CH4 and N2O emissions expressed in t CO2-e per hectare an d year. The main output of the tool is an estimation of the C-balance that is associated with adoption of alternative land management options, as compared to a ‘business as usual’ scenario. EX-ACT has been developed using primarily the IPCC 2006 Guidelines for National Greenhouse Gas Inventories (IPCC 2006), complemented by other existing methodologies and reviews of default coefficients where available. Default values for mitigation options in the agriculture sector are mostly from the 4th Asse ssment Report of IPCC chapter 8, Smith et al.2007. Default values for wetlands (inland and coastal) are from the 2013 supplement to the IPCC 2006 (IPCC 2014). Thus, EX-ACT allows for the C–balance appraisal of new investment programmes by ensuring an appropriate method available for donors and planning officers, project designers and decision makers within agriculture, forestry and fisheries sectors in developing countries. The tool can also help to identify the mitigation impacts of various inv estment project options, and thus provide an additional criterion for consideration in project selection. These technical guidelines for using EX-ACT aim at providing the user with the details of procedures and numbers used to perform calculation of C balance.