We build software for solar on buildings. BREOS powers engineering-grade simulation in Designer, while Hub handles the members, billing and day-to-day operations of renewable energy communities.
It started with BREOS, an open-source simulation engine born from PhD research. Designer turns it into a browser workflow for planning solar systems, and Hub runs the energy communities those systems power.
Energy access is changing. Not every roof is suitable for solar, yet everyone deserves a share of the transition. Renewable Energy Communities (RECs) and Collective Self-Consumption (CSC) make that possible by letting neighbors share a single solar array.
Our tools meet on this idea: design the shared system with Designer, backed by BREOS for simulation accuracy, then operate the community day-to-day with Hub.
Traditional solar forecasts assume static weather and static behavior. Reality isn't static.
Our engine runs thousands of Monte Carlo simulations, capturing weather variance, consumption, and equipment ageing. The result is a risk-aware payback projection with confidence bands, not a single optimistic date.
BREOS came out of PhD research at the University of Porto and is public under BSD-3. It's the engine underneath Designer and Hub, and you can read every line of it today.