phelas

phelas develops Catalyst, a BESS (Battery Energy Storage System) modelling software that enables developers and project financiers to evaluate large-scale battery storage projects in Europe. The platform combines FCR, aFRR, Day-Ahead, Intraday, and EEG revenue streams into one coherent model, computing simulations using real degradation curves, cell chemistry parameters, and ramp-rate limits. Catalyst calculates thousands of parameter configurations ranked by NPV, IRR, or CapEx, with quarter-hourly dispatch simulation and support for all EU markets including Germany, France, and Spain. The software uses a deterministic LP/MILP solver rather than black-box AI, ensuring every result is traceable and auditable for investment committees, with custom market data import and professional PDF and Excel report generation. Founded in 2020, headquartered in Gilching, Germany, The company has raised $5.2M at the Seed stage, backed by investors including E44 Ventures, Axon Partners Group, Hubraum, BNV Partners, TechFounders..