Environmental Impact and Sustainability Applied General Equilibrium Model (ENVISAGE)

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ENVISAGE is a computable general equilibrium (CGE) model that assesses interactions between economies and the global environment as affected by anthropogenic greenhouse gas emissions. Designed to analyze a variety of issues related to the economics of climate change, including baseline of CO2 and greenhouse gases, impact of climate change on economy, adaptation to climate change, and distributional consequences of climate change.

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This tool is included in the Development Impacts Assessment (DIA) Toolkit from the LEDS Global Partnership.


ENVISAGE is a recursive dynamic multi-sector, multi-region CGE model. Its emissions and climate module links economic activities directly to changes in global mean temperature. The model also links changes in temperature to impacts on economic variables such as agricultural yields or damages created by sea level rise. Issues analyzed include the economics of climate change, impact of climate change on economy, adaptation to climate change, and distributional consequences of climate change.

When to Use This Tool

This tool is most useful for development impacts assessments focused on:

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Learn more about the topics for assessing the impacts of low-emission development strategies (LEDS).

Key Outputs

Various quantitative outputs regarding:

  • Baseline emissions of CO2 and other greenhouse gases
  • Impacts of climate change on the economy
  • Impacts of adaptation by economic agents to climate change
  • Impacts of greenhouse gas mitigation policies, e.g., taxes, cap-and-trade
  • The role of land use in future emissions and mitigation
  • The distributional consequences of climate change impacts, adaptation and mitigation at the national and household level.

How to Use This Tool

Training Available
No formal training, documentation provided; Knowledge on Computable General Equilibrium (CGE) recommended

Level of Expertise

Key Inputs

The core database, which includes energy volumes and CO2 emissions, is the Global Trade Analysis Project (GTAP) database, currently version 7.0 with a 2004 base year