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flixOpt

Flexible · Low-entry · Investment · X-sector · OPTimization

Model more than costs · Easy to prototype · Based on dispatch · Sector coupling · Mathematical optimization

Model, optimize, and analyze complex energy systems with a powerful Python framework designed for flexibility and performance.

🚀 Get Started 💡 View Examples ⭐ GitHub

🚀 Getting Started

New to FlixOpt? Start here with installation and your first model

💡 Examples Gallery

Explore real-world examples from simple to complex systems

📚 API Reference

Detailed documentation of all classes, methods, and parameters

📖 Recipes

Common patterns and best practices for modeling energy systems

∫ Mathematical Notation

Understand the mathematical formulations behind the framework

🛣️ Roadmap

See what's coming next and contribute to the future of FlixOpt

🏗️ Framework Architecture¶

FlixOpt Conceptual Usage — Conceptual Usage and IO operations of FlixOpt

FlixOpt provides a complete workflow for energy system optimization:

Define your system using Python components
Optimize with powerful solvers (HiGHS, Gurobi, CPLEX)
Analyze results with built-in visualization tools
Export to various formats for further analysis

Community & Support¶

GitHub¶

Report issues, request features, and contribute to the codebase

Visit Repository →

Discussions¶

Ask questions and share your projects with the community

Join Discussion →

Contributing¶

Help improve FlixOpt by contributing code, docs, or examples

Recent Updates¶

What's New in v3.0.0

Major improvements and breaking changes. Check the Migration Guide for upgrading from v2.x.

📋 See the full Release Notes for detailed version history.

Ready to optimize your energy system?

▶️ Start Building

Basic Installation¶

pip install flixopt

Includes the HiGHS solver - you're ready to optimize immediately.

Full Installation¶

For additional features (interactive network visualization, time series aggregation):

pip install "flixopt[full]"

Solver Support¶

FlixOpt supports many solvers via linopy: HiGHS (included), Gurobi, CPLEX, CBC, GLPK, and more.

→ Installation guide

🤝 Contributing¶

FlixOpt thrives on community input. Whether you're fixing bugs, adding components, improving docs, or sharing use cases - we welcome your contributions.

→ Contribution guide

📖 Citation¶

If FlixOpt supports your research or project, please cite:

Main Citation: DOI:10.18086/eurosun.2022.04.07
Short Overview: DOI:10.13140/RG.2.2.14948.24969

To pinpoint which version you used in your work, please reference one of these doi's here: -