Solcast, the weather and irradiance data API built for Solar

We offer the worlds-largest solar API, delivering weather and irradiance data in historical datasets, live estimated actuals and forecasts 

The Solcast API offers data in various formats to meet the needs of over 350 customers managing 300 GW of solar projects globally. This includes TMYs, historical actuals, live data, and forecasts. We also provide grid aggregations to support energy price modelling, grid management and grid scale load forecasting. Explore how our comprehensive data solutions can enhance every stage of your solar project. Learn more and see how our tailored solutions can elevate your solar projects.

Data built for solar 

Make every decision count with data designed specifically for solar projects. From planning to operation, our solar insights ensure you’re leveraging the most accurate and detailed information available. Track, measure, and forecast with the confidence that your data covers every crucial detail.

Bankable, high-fidelity actuals 

Trust your results. Our globally validated data delivers high-resolution accuracy, ensuring your models, reports, and projects are reliable and bankable. Count on data that’s consistent, unbiased, and globally recognized.

High-resolution solar forecasts 

Optimize your solar assets with live, high-resolution forecasts. The Solcast API processes over 100 million forecasts per hour, modelling cloud all over the world, to deliver you the highest standard of data. Whether it’s production, downtime, or power management, our data drives your decisions with unmatched accuracy and precision.

Enterprise-grade API 

Integrate seamlessly with a scalable API designed for solar. Whether you’re building new products or enhancing existing platforms, our API empowers your teams and customers to make better decisions, faster.