Scenarios for Sustainability: A source for freely-available and open-source tools, data, and methods for scenario development. The site focuses on the practicalities of carrying out sustainability assessments and provides links to sites with additional resources.
COMMEND: COMMEND (COMMunity for ENergy environment & Development) is an international initiative designed to foster a community among energy analysts working on energy for sustainable development. COMMEND is an initiative of SEI’s Climate and Energy Program. For more information, see the COMMEND & LEAP page on this site.
WEAP21: WEAP, the Water Evaluation And Planning system is a user-friendly software tool that takes an integrated approach to water resources planning. WEAP and the WEAP21 web site are initiatives of SEI’s Water and Sanitation Program. For more information, see the WEAP page on this site.
LEAP, the Long range Energy Alternatives Planning system, is an integrated energy-environment modeling tool.
WEAP, the Water Evaluation And Planning system, is a user-friendly software tool that takes an integrated approach to water resources planning.
The Scenario Toolkit is a set of open-source software tools to support qualitative scenario development, including links between qualitative and quantitative analyses.
The IPAT-S modeling language is an open-source modeling language designed to support sustainability scenario development. IPAT-S comes with a suite of supporting tools to assist in developing, maintaining, using, and sharing scenario models.
UNEP IEA Training Manual Module 6: Scenario development and analysis The GEO approach to developing scenarios, with contributions from SEI staff.
Developing Quantitative Scenarios: A Handbook for Accidental Practitioners: A short manual outlining an approach to organizing a quantitative scenario analysis. (Note that while it provides a process, it does not go into details about modeling strategies.) (PDF format, 0.3 MB)