--- title: "Accurate solar & wind forecasting API | Steadysun" description: "Accurate weather and power forecasts to reduce risks, cut losses and boost renewable energy performance. Start using our powerful API today." featured_image: "https://steady-sun.com/wp-content/uploads/2025/01/steadysun-favicon.png" url: "https://steady-sun.com/" date_modified: "2026-01-22T15:33:24+01:00" --- # Solar and wind energy forecasting API ## Optimize and secure renewable production with our powerful API. Get accurate weather and power forecasts. Live irradiance data. ## An API designed for performance and scalability ### Top-rated accuracy By combining +20 weather models and 5 satellites , our unique multi-model technologies delivers more accurate solar and wind energy forecasts. ### Worldwide data Global coverage, all technologies & aggregation levels. Time horizon from minutes to weeks with updates up to 5 minutes . ### Easy setup Online subscription in full autonomy. Easy access to forecasts via API , SFTP or CSV files . Compatible with any platform and fully customizable. ### Competitive pricing One of the most affordable solutions on the market. With usage-based pricing , you pay only for the forecast points you need. [Start today!](https://steadyweb.steady-sun.com/account/signup/) [Book a demo](https://steady-sun.com/contact-us/) --- ![Logo of SONABEL - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-sonabel.webp) ![Logo of METEO FRANCE - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-meteo-france.webp) ![Logo of Rte (Le réseau de transport d'électricité) - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-rte.webp) ![Logo of red eléctrica - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-red-electrica.webp) ![Logo of EDF renouvelables - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-edf-renewables.webp) ![Logo of EDT ENGIE - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-edt-engie.webp) ![Logo of HONDA - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-honda.webp) ![Logo of ENGIE Green - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-engie-green.webp) ![Logo of ENERCAL - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-enercal.webp) ![Logo of Contigo Energía - ex Gesternova](https://steady-sun.com/wp-content/uploads/2025/05/contigo-energia-ex-gesternova-steadysun-partners.webp) ![Logo of JUWI - grey](https://steady-sun.com/wp-content/uploads/2025/01/logo-juwi.webp) ![Logo of ACWA POWER](https://steady-sun.com/wp-content/uploads/2025/05/logo-acwa.webp) ## What we do ### Empowering professionals with high-precision forecasts to optimize renewable energy variability , boost revenue , and improve efficiency Solar forecasts Wind forecasts​ Live solar data Hindcast data Accurately anticipate your photovoltaic production, optimize grid injection, reduce risk and comply. Get highly accurate solar power generation forecasts with our advanced Steadymet technology that combines over 20 leading weather models to deliver the market’s most reliable solar predictions.Whether you manage photovoltaic farms, trade energy, or operate grids, our forecasts enable you to optimize production and reduce risks up to 15 days ahead. Discover our solar energy forecasts Anticipate your wind power production, reduce imbalance costs, and enhance operational efficiency with precision. Gain up to 16 days of forward visibility with ultra-accurate wind forecasts. Our Steadymet technology integrates over 20 leading weather models with detailed confidence intervals to support smarter planning and decision-making.Ideal for wind farm management, energy trading, or ensuring grid stability with precise production predictions. Discover our wind energy forecasts Don't let weather fluctuations catch you off guard anymore. Track your real-time production and react instantly. Combining satellite observations, ground-based data, and advanced modeling, our live solar energy forecasts delivers remarkably accuracy for the coming minutes and hours.Ideal for:Hybrid power plant managementIsland grid balancingOptimizing intraday trading operationsMaximizing self-consumption rates Discover our real-time solar forecasts Rebuild past weather and production to analyze performance, size your systems, and evaluate profitability. Our hindcast data simulates what our forecasting model would have predicted at your specific project sites under past weather conditions.Use these datasets to:Evaluate site potential and financial viabilityTrain and fine-tune your AI modelsOptimize and stress-test your energy management strategiesAssess model performance Discover our hindcast data ## Loved by the companies you trust ### They optimize their operations with Steadysun “The forecasts provided by Steadysun have significantly optimized the management of our clients’ assets. Their responsiveness and ability to understand our needs strongly motivate us to continue this collaboration and explore their new products!” Frédéric Bienvenu Product Owner, Energy Pool “A responsive, available, and professional team. Professionals products.” Villa Yves Head of Energy Management Department, Electricité de Tahiti (EDT) “Using Steadysun’s forecasting solutions, we reduced grid code penalties by 50% and cut PV production losses from curtailment by 75%.” Mr. L., COO Solar plant located in a microgrid/insular network [Experience Steadysun's API No credit card required](https://steadyweb.steady-sun.com/account/signup/) --- ## Real use cases, real impact ### Our energy forecasts are designed to meet all your business needs Plant operation & maintenance Make your solar and wind power plants more profitable. Limit penalties, increase revenues. Learn more Solar hybrid power systems & Microgrids Promote solar energy use. Reduce investment and operating costs. Learn more Insular system management Maximize solar energy use and maintain grid balance on islands or microgrids. Learn more Renewable energy trading & Portfolio management Optimize transactions on power markets. Manage risks. Learn more Research & Innovation Get vast, timely environmental data to validate models, track phenomena, and accelerate discoveries. Learn more Solar and wind project development Assess the future profitability of solar and wind projects, factoring in weather variability. Learn more --- ## Sign up for your 30-day free trial now! Discover the best of Steadyweb, our autonomous forecasting plateform. Optimize** two plants free** with Expert+ features – no commitment ! [Experience Steadysun's API No credit card required](https://steadyweb.steady-sun.com/account/signup/) ![Aerial image of solar PV field](https://steady-sun.com/wp-content/uploads/2025/04/solar-power-plant-field-aerial-view-solar-panels-1-scaled.jpg) --- ## About steadysun ## Why choose Steadysun solar and wind forecasting API? [Get your trial](https://steadyweb.steady-sun.com/account/signup/) ### Our expertise - Cloud and weather observation - Solar and wind energy forecasting - Energy consumption forecasting - Services and consulting in solar / wind energy and electrical systems. 🏆 Top rated accuracy in 2023 🌍 Trusted in +10k sites in 80 countries 👍 Service availability rate commitment > 99.7% Our API has been specifically developed to **deliver our ultra-accurate forecasts seamlessly across any platform**, ensuring fast, reliable access to critical data wherever you need it. ### Our innovative solar and wind technologies - Our Big Data technology aggregates geospatial data from **+20 numerical weather models**, satellite observations, and ground measurements. - Combines a **physics-AI hybrid approach** with machine learning at the core of its algorithms to improve forecast accuracy. - Evaluate the probability of an event and optimize your decisions in the face of weather risks using **confidence intervals**. - Using the regional WRF (Weather Research and Forecasting) model, capable of achieving a **resolution of up to 1 km**. ### Our team of experts Created in 2013 and originating from CEA and INES, Steadysun leverages advanced expertise in renewable energy, meteorology, artificial intelligence, and data science. Our collaborations with French laboratories allow us to remain **at the forefront of innovation**. [Meet our team](https://steady-sun.com/about-us/) ### Our customer support Our team supports you throughout all your projects, from integrating our solutions to daily use. Need assistance or advice? **We’re happy to help you** maximize the value of our forecasts and optimize your operations. 🚀 [Contact us](https://steady-sun.com/contact-us/) #### That’s Steadysun today! 1000+ - Active users 50 - Clients 80 - Countries served --- ## They're talking about us ![Logo of LA TRIBUNE Auvergne-Rhône-Alpes](https://steady-sun.com/wp-content/uploads/2025/08/La-Tribune-AURA-logo.jpg) ![Logo of B SMART X 4Change](https://steady-sun.com/wp-content/uploads/2025/08/B-smart-X-4-change.jpg) ![Logo of LE DAUPHINE libéré](https://steady-sun.com/wp-content/uploads/2025/08/logo_dauphine-libere.png) ![Logo of ACTU ENVIRONNEMENT.com](https://steady-sun.com/wp-content/uploads/2025/08/logo-actu-environnement.png) ![Logo of CEA (Commissariat à l'énergie atomique et aux énergies alternatives)](https://steady-sun.com/wp-content/uploads/2025/03/logo-cea-e1766157702784.jpeg) ![Logo of pv magazine](https://steady-sun.com/wp-content/uploads/2025/08/pv-magazine-logo-e1766155083649.png) ![Logo of L'ENERGEEK](https://steady-sun.com/wp-content/uploads/2025/08/logo-lenergeek.jpg) ![Logo of EDF, une rivière un territoire](https://steady-sun.com/wp-content/uploads/2025/08/Logo-edf-une-riviere-un-territoire-e1766155145988.webp) ![Logo of L'Echo du Solaire](https://steady-sun.com/wp-content/uploads/2025/08/l-echo-du-solaire-logo.png) ![Logo of ENVIRONNEMENT MAGAZINE](https://steady-sun.com/wp-content/uploads/2025/08/environnement-magazine-logo.png) ![Logo of CEA liten](https://steady-sun.com/wp-content/uploads/2025/08/Logo-CEA-LITEN.png) ![Logo of GROUPE Ecomedia](https://steady-sun.com/wp-content/uploads/2025/08/Logo-groupe-ecomedia.jpg) ![Logo of Le Journal des Entreprises](https://steady-sun.com/wp-content/uploads/2025/08/Le-Journal-des-Entreprises_Logo.jpg) ![Logo of enviscope - MAG2LYON](https://steady-sun.com/wp-content/uploads/2025/08/Mag2LyonEnviscope-logo.webp) --- ## Latest analyses and news ## Follow us to stay updated on renewable energy forecasting ## Most recent blog posts Steadysun news Steadysun contributes to surpassing the 50% renewable energy milestone in Tahiti March 4, 2026 Steadysun news Our energy forecasting platform: review and key figures 2025 November 13, 2025 Steadysun news From France to the world: Steadysun surpasses 1,000 users in over 80 countries! September 25, 2025 ## Upcoming events The Business Booster (TBB) 2026 Booth upcoming October 28 - 29 Messe Munich, Hall 6