Jua is a sophisticated tool that uses artificial intelligence (AI) for weather-dependent energy trading. The tool harnesses data, metrics, and deep neural network learning to deliver highly accurate measurements and modelling for weather, climate, and atmosphere. As the first 'Large Physics Model', Jua predicts weather conditions with extreme accuracy, precision, and speed, which is critical for those trading energy linked to weather conditions. It can provide weather parameters needed for energy trading up to 16 days ahead, with pinpoint timing of weather events and extreme high forecast accuracy, enabling users to understand the scale of weather events. Jua distinguishes itself by utilizing millions of fresh data points and unprecedented data sources to achieve exceptional prediction accuracy, outperforming existing models. It empowers users to identify major weather events early, allowing them to anticipate events that may critically impact energy infrastructure. Rather than relying on traditional post-processed forecasts dependent on third-party weather models, Jua offers a novel weather model, propelled by massive amounts of primary data, innovative data sources, and state-of-the-art AI technology. This results in unique insights and a pioneering large physics model of the atmosphere.