This technical guide provides a overview of the methodologies, data sources, and calculations underpinning the JIM.

 

It outlines how the model estimates various types of impact including direct, supply chain, induced, financing-enabled, and power-enabled effects, while detailing the rationale, assumptions, and limitations behind each approach. Designed as a reference for practitioners, this document supports transparency and consistency in impact measurement and reporting.

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Key sections include:

• Statistics 

• Impact calculations

• Data sources

• Assumptions and limitations​