Overview

The Transition Analysis tool from OS-Climate is an open-source scenario modelling framework known as WITNESS with a graphical interface (SoSTrades). It structures the global energy, economic, resource and climate transition problem using numerical simulation. The tool allows users to run multiple scenarios, compare strategic options and assess long-range transition pathways, making it relevant for climate and financial analysis. Finance professionals may use it to support climate risk assessment, strategic planning and investment evaluation under alternative decarbonisation scenarios.

Organisation behind the tool

OS-Climate is an open-source initiative hosted by the Linux Foundation that develops data and analytical tools to integrate climate risk into financial decision-making. The Transition Analysis tool is part of OS-Climate’s suite of climate and finance tools, and is developed collaboratively with contributors from finance, technology and research communities.

What the tool does

• Provides a system-of-systems framework (WITNESS) to build a global transition model.
• Integrates multiple best-in-class models for economic, energy, resources and climate dynamics.
• Enables users to run and compare alternative transition scenarios and strategy trade-offs.
• Supports optimisation of global investments against objectives such as economic development and emissions reduction.
• Assesses impacts and value of energy technologies or resources under different futures.
• Projects future trajectories of economy, energy, resources, climate and policies.

Target audience

Primary users:

• Financial analysts and risk teams.
• Climate and sustainability professionals.
• Portfolio managers assessing long-term transition impacts.

Other potential users:

• Researchers studying integrated assessment and transition scenarios.
• Policymakers exploring energy and climate futures.

Relevance to finance professionals

Risk assessment

• Evaluating transition risk under varied climate and policy scenarios.
• Analysing impacts of decarbonisation pathways on economic variables.

ESG analysis

• Supporting climate-related scenario inputs for reporting and disclosures.
• Informing environmental risk metrics used in sustainability frameworks.

Market/commodity insights

• Providing insight into future energy mix dynamics and technology implications.
• Informing assessments of resource value under transition pathways.

Investment context

• Supporting long-term strategic planning linked to climate and energy transition conditions.
• Assisting comparison of investment trade-offs aligned to climate objectives.