Klima-Agence is Luxembourg's national climate agency, a trusted, non-commercial voice in a space often crowded by sales pitches and technical jargon. When it came to helping households navigate the real-world decision of going solar, they needed more than an information page. They needed a tool people would actually use, trust, and act on.
We designed and built the full front end of the Klima-Agence Solar Simulator - an interactive tool that lets users explore profitability, self-sufficiency, and the interplay between solar panels, home battery storage, and major household loads like electric vehicles and heat pumps. The simulator is built on a calculation engine developed by ingefo.de, whose technical rigour forms the reliable foundation beneath the experience. Accessibility was a core consideration throughout: the simulator is built to be usable by everyone, regardless of device or ability.
The design challenge wasn't technical accuracy; that was a given. The harder question was how to make that accuracy feel human. Energy decisions are made with limited time, mixed advice, and understandable hesitation. So we built the simulator around that reality: revealing information step by step, keeping the flow calm, and presenting long-term impact in ways that feel immediate and personal. The goal was never to steer users toward a conclusion, it was to help them ask better questions.
This project is part of a long-running partnership with Klima-Agence. Together, we keep building digital tools that translate complexity into usable knowledge -- and that give people the confidence to take their next step.
