EL1XR is an open, modelling-first initiative that designs, optimises, and governs future-proof, multi-vector energy systems—delivering open models, market insights, and deployable solutions with real-world impact.

EL1XR is an open, modular ecosystem of analytical tools for modelling, planning, and operating zero-carbon energy systems. We provide a shared foundation for data-driven policy analysis, market design, and decision-making, focusing on electricity systems and their coupling with heat, hydrogen, and mobility.

Using methods from mathematical optimisation, statistics, and computational science, we build general-purpose tools for:

• ⚡Strategic planning – generation & transmission expansion, adequacy, investment analysis
• 🛠Operation & Market – day-ahead, reserves, flow-based coupling, AC/DC power flows, flexibility integration (BESS, H₂, DSM, EV/V2G)
• 🎲Risk and uncertainty – stochastic optimisation, Monte-Carlo stress testing, robust decisions under extreme conditions

EL1XR is an independent, community-driven effort and a neutral hub for open-source energy-system research. We welcome contributions from academia, research institutes, system operators, and industry partners.

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