Today marks a huge milestone: Exactly 10 years ago, on April 24, 2016, the very first „Hello World“ commit for OpenEMS was made. What started as a visionary project has evolved into the leading „Open Source Operating System for the Energy Transition“.
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OpenEMS stands for…
„Our open-source energy management system helps users manage energy intelligently by making complexity transparent and manageable, and providing future-proof CO₂ and cost savings—unlike closed systems.“
A Success Story in Numbers
Today, the „value“ of the developed code is estimated at over $20 million. But the true value lies in its people:
- A Software worth more than 20 million $
- A global community with users from 53 countries.
- Over 100 contributors who continuously improve the code.
- ~ 1,400 stars on Github
- Regularly 15,000 to 20,000 users in the OpenEMS Community per month
- Professional governance by the OpenEMS Association e.V.
- Used in productive systems, pilot projects and labs around the world
Why OpenEMS Matters Today
As we face the generation-defining task of the energy transition, the problem is no longer just about generating or even storing renewable energy. The challenge is integration.
OpenEMS serves as the bridge, integrating:
- Local EMS: Intelligent, decentralized and cyber-secure sector coupling of battery storage, heat, and mobility.
- Edge, UI, & Backend: A full open-source IoT software stack for real-time control and monitoring.
- Modern Features: From AI-based forecasts and dynamic electricity tariffs to smart vehicle charging
Looking Ahead: The Future of the Energy Revolution
While we celebrate a decade of achievements, 2026 brings new challenges and opportunities. The focus is shifting toward large-scale C&I storage, smart meter gateway communication, and navigating complex regulatory landscapes like §14a EnWG.
OpenEMS is more than just software; it is the infrastructure for a sustainable future—comparable to how the internet made knowledge available to everyone.
Happy Birthday, OpenEMS! Here’s to the next 10 years of empowering the decentralized energy revolution together.