All Tools

CLEWs

Climate, Land, Energy and Water Systems

CLEWs is a modelling framework for analysing interlinkages across the climate, land, energy and water nexus. Each Starter Data Kit contains data across four categories ready to help build an integrated CLEWs model at country level.

Each Starter Data Kit contains climate, land, energy and water data ready to help create a model. The datasets can be viewed through four categories:

Climate
Scale
Source
Crop Emission Factors
Global
Cao et al. 2026
Livestock Emission Factors
Country-specific
FAOSTAT
Land Emission Factors
Global
MIT Climate Portal, NOAA and Omwoyo et al. 2025
Land Use Change Emission Factors
Regional
IPCC Tier 1 2006 and 2019
Fuel Emission Factors
Global
See OSeMOSYS Starter Data Kits
Land
Scale
Source
Crop Costs
Global
SIWI and APRA
Crop Demand
Country-specific
FAOSTAT (Food Balances)
Crop Yield
Country-specific
FAOSTAT
Livestock Costs
Global
Rapiya et al. (2025)
Livestock Demand
Country-specific
FAOSTAT
Livestock Yield
Country-specific
FAOSTAT
Land Cover
Country-specific
FAOSTAT
Energy
Scale
Source
Energy Demands
Country-specific
See OSeMOSYS Starter Data Kits
Availability Factor
Country-specific
See OSeMOSYS Starter Data Kits
Capacity Factors
Global
See OSeMOSYS Starter Data Kits
Operational Life
Country-specific
See OSeMOSYS Starter Data Kits
Installed Capacity
Country-specific
See OSeMOSYS Starter Data Kits
Efficiencies
Country-specific
See OSeMOSYS Starter Data Kits
Costs
Country-specific
See OSeMOSYS Starter Data Kits
Renewable Potential
Country-specific
See OSeMOSYS Starter Data Kits
Fossil Fuel Reserves
Country-specific
See OSeMOSYS Starter Data Kits
Water
Scale
Source
Variables – Availability, Potential and Withdrawal
Country-specific
AQUASTAT
Costs
Global
Plappally and Leinhard 2012
Efficiency – Power Plant Usage
Global
WRI (2020)

View the guidance document for data, calculations and assumptions