Open Climate Fix's Quartz Solar tool, integrated into the National Energy System Operator's operations, saves Great Britain's grid operator GBP 30 million per year by accurately forecasting solar generation and reducing the need for reserve capacity. The AI-powered tool, combining machine learning, satellite imagery, and weather data, updates every 15 minutes and has halved forecasting errors. By using multiple data sources and providing probabilistic output, the tool has improved forecasting methods and could potentially save up to GBP 150 million per year by 2035. Open Climate Fix, a non-profit organization founded in 2019, is exploring commercialization opportunities to fund further research and expand into other markets like the Netherlands, focusing on AI-powered energy system projects with open source code.