Levelise launches open calculator for modelling solar and battery returnsLevelise has launched the Levelise Calculator, a free open-source tool designed to help installers, energy managers and system designers accurately model the financial performance of solar and battery storage systems. The calculator simulates system performance over a full year using half-hourly data, enabling professionals to assess real-world performance rather than relying on broad assumptions. Unlike ...The post Levelise launches open calculator for modelling solar and battery returns appeared first on Professional Electrician.