# E-5IF® — Energy Five Imperatives Framework > An interactive web tool for comparing energy policy alternatives using the E-5IF® framework, developed by Dr. Luiz Claudio Guimaraes e Silva at King's College London. ## What is E-5IF? The Energy Five Imperatives Framework (E-5IF) is a structured decision-support tool that helps policymakers, regulators, and energy professionals compare energy policy alternatives across five imperatives: 1. **Security of Supply** — reliability and resilience of energy systems 2. **Equity & Just Transition** — fairness in distributing costs and benefits 3. **Environmental Sustainability** — ecological impact and climate alignment 4. **Affordability & Economic Efficiency** — cost-effectiveness for consumers and economies 5. **Governance & Institutional Quality** — regulatory transparency, rule of law, and institutional capacity ## How It Works - Users add two or more energy policy alternatives - Each policy is scored (0–10) on each of the five imperatives - The tool applies **Nash bargaining** (a utilitarian compromise-selection mechanism) to identify the most balanced option - A **proportionality audit** checks whether the chosen policy's trade-offs are transparent and defensible - Results are visualised via radar charts and comparison tables - Users can export a professional **Executive Report (PDF)** for board-level discussions ## Key Features - Policy scoring on five imperatives - Nash bargaining compromise selection - Proportionality audit with qualitative notes - Radar chart comparison visualisation - Customisable thresholds for each imperative - PDF executive report generation - Multi-language support: English, Spanish, Portuguese ## Academic Reference The framework is based on the paper: "The Energy Five Imperatives Framework (E-5IF)" by Dr. Luiz Claudio Guimaraes e Silva Published on SSRN: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=6064928 ## URL https://energy-five-navigator.lovable.app