Data-to-Deal: Component 4. Modelling: Undertaking Deliberative Modelling – A Best Practice Brief.

This best practice brief presents Component 4 of the Data-to-Deal (D2D) framework, which addresses Modelling. This component focuses on the role of scenario-based, policy-relevant modelling in translating shared national visions into implementable transition strategies that are credible to domestic stakeholders and finance partners. Component 4 comprises six sub-components of successful modelling: (i) establishing governance and institutional arrangements; (ii) choosing fit-for-purpose models aligned with policy questions and national priorities; (iii) ensuring transparency and openness in methods and data; (iv) integrating demand-side modelling that reflects spatial and socioeconomic realities; (v) communicating results to inform policy and finance; and (vi) translating modelling into endorsed transition plans. Together, these sub-components guide countries from shared visions and targets towards implementable transition plans grounded in evidence, credibility, and ownership. The brief draws on practical experience and case studies, including Ecuador, Kenya, and the Latin America and Caribbean region as a whole, to illustrate best practices for developing robust modelling workflows that support financing and implementation.