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An API (Application Programming Interface) is simply a communication bridge that allows different software systems to exchange information seamlessly. 🌐
Our forecasting API works like a weather expert available 24/7 to answer your specific questions. Your systems can automatically ask questions like “What will solar production be tomorrow at our Berlin plant?” by sending a structured request to our API. The API immediately processes this request and returns organized forecast data that your systems can automatically understand and use. 🚀
The key benefits of using our API include:
No specialized programming knowledge is required to begin using our API — our comprehensive documentation includes ready-to-use code examples to simplify implementation.
Our API enables seamless integration with operational systems through RESTful endpoints with extensive documentation available at our developer portal. 🧑💻
In any case, you’ll need your individual token (available in your SteadyWeb account or automatically at the top of the documentation when you logged in) and most likely the uuid of your site (available in the interface under its name).
Our API delivers forecasts with an average response time of 350ms, typically ranging between 300-600ms depending on query complexity. Simpler requests (single-variable, hourly time step, 24-hour horizon) perform significantly faster than average.
The API architecture supports efficient parallel processing, allowing you to make multiple simultaneous calls for optimized performance. ⚡
No. While we don’t strictly enforce per-minute site limits, we recommend aligning API call frequency with forecast update intervals. Weather forecasts update every 3-6 hours for meteorological (MET) forecasts and every 10-15 minutes for satellite (SAT) forecasts. ⏲️
Expert+ subscriptions with real-time measurement feedback benefit from calls synchronized with new data transmissions. Making requests more frequently than once per minute provides no additional value, as forecast data remains unchanged.
The standard response format is JSON, providing structured forecast data with intuitive object hierarchy and comprehensive metadata. For systems with specific format requirements, we also support CSV output for tabular data processing and specialized formats. 📃
All response formats include identical data content. The API documentation provides detailed schema definitions, field descriptions, and sample responses for each format.
Our comprehensive API documentation is available to help you integrate our solar and wind forecasting services seamlessly. 👍 The documentation includes detailed endpoints, parameter descriptions, response formats, and code examples.
SteadyMET and SteadySAT represent our two forecasting technologies with distinct data sources and applications. SteadyMet utilizes meteorological weather forecast models for comprehensive coverage, while SteadySat leverages real-time satellite imagery for enhanced short-term accuracy. 🛰️⛅
While SteadyMet is included in all subscription tiers, SteadySat functionality is available in premium subscription levels (Expert+ and Enterprise). Our system intelligently blends both technologies to deliver optimal forecasting results across all timeframes — from immediate predictions to long-range outlooks.
Our forecasting platform integrates data from +20 major national and international meteorological centers, ensuring comprehensive global coverage and maximum accuracy. 🌐 For specific locations requiring enhanced precision, we deploy the high-resolution WRF (Weather Research and Forecasting) model.
Our advanced algorithms intelligently combine multiple model scenarios to generate both highly accurate mean forecasts and detailed quantile distributions. This approach quantifies uncertainty levels across all prediction horizons, providing you with complete confidence metrics for operational decision-making.
Forecast accuracy varies depending on the specific variable, time horizon, and geographical location being analyzed. It is not possible to provide an exhaustive and global answer to this question but you can find a summary of our performance here.
Conventional error metrics like Mean Absolute Error (MAE) can create misleading comparisons between our satellite and meteorological forecasting technologies.
SteadySAT excels at capturing rapid temporal variability and sudden cloud transitions that occur on minute-to-minute timescales — dynamics that traditional meteorological models inherently smooth out. 🛰️☁️ When rapid alternations between clouds and sunshine occur, SteadySAT accurately predicts these transitions but may experience small timing offsets (such as a 15-minute shift in cloud clearing). These minor timing differences can produce higher MAE scores despite providing significantly more actionable information for operational decision-making.
For intraday operations requiring precise cloud movement prediction, SteadySAT’s ability to capture pattern variability delivers superior operational value despite potentially different conventional error metrics. 🚀
We employ a sophisticated multi-layered ensemble forecasting approach that integrates three key dimensions:
This comprehensive methodology allows our system to identify optimal scenario combinations for each specific location and timeframe. 💪
Our proprietary optimization algorithms dynamically weight each forecast component based on historical performance and current conditions, delivering probabilistic forecasts with precise uncertainty quantification for all variables of interest.
This approach significantly outperforms single-model methodologies, particularly in complex weather situations and longer forecast horizons.
No. Unlike traditional forecasting services that require months or years of historical data, our advanced calibration algorithms are designed to optimize performance using real-time measurement feedback rather than extensive archives. 🔄
Customers with real-time correction subscriptions can achieve optimal forecasting performance by implementing measurement feeds (power output, irradiance, temperature) immediately upon service activation.
For maximum performance enhancement, we recommend providing all available atmospheric measurements (temperature, wind, humidity, etc.) as additional input parameters for our optimization algorithms, creating a truly site-specific forecasting solution.
Yes. Our platform lets you create custom groups that automatically aggregate forecasts across any number of installations. You can easily sum or average forecasts from selected sites, generating unified predictions with comprehensive uncertainty metrics.
Our system takes care of geographical weighting, time zone adjustments, and statistical correlations to ensure accurate portfolio-level forecasting. 🎯
For large-scale regional or country-level aggregations, contact us to explore our enterprise solutions.
Our comprehensive forecasting platform delivers predictions for over 30 meteorological variables essential for renewable energy operations and advanced weather-dependent applications.
☀️ Core solar variables include GHI, DNI, DHI, GTI (for any surface orientation), and clear sky indices.
🍃 Wind forecasts cover speed, direction, and gust factors at multiple altitudes. Temperature forecasts include ambient, module, and dew point measurements.
Additional parameters encompass relative humidity, precipitation probability and intensity, cloud cover by altitude, atmospheric pressure, and specialized indicators like soiling probability.
All variables are available across all forecasting horizons with complete uncertainty quantification, enabling sophisticated operational modeling and decision optimization.
Yes. You can request a hindcast service. Our hindcast service provides comprehensive pre-implementation performance validation tailored to your exact locations. 📊
This service recreates historical forecasts spanning 1-2 years, precisely matching the operational configuration you’ll receive post-implementation. By comparing these hindcast predictions against your historical measurements or third-party estimates, you can measure expected forecast performance metrics specific to your sites, variables, and time horizons.
Our forecast update schedule is optimized to maximize accuracy across all prediction horizons. ⏲️
Long-range forecasts (2-15 days ahead) are refreshed 4 times daily following major global weather model releases.
Short-term forecasts (6-48 hours ahead) update up to 8 times daily in North America and Europe, with slightly reduced frequency in other regions.
Ultra-short-term forecasts for premium subscriptions with SteadySat technology are refreshed every 5-15 minutes as new satellite imagery becomes available, providing near-continuous updates for critical operations.
No. We focus exclusively on forecast horizons where scientifically validated accuracy can be achieved (0-15 days). 🔍 While monthly and seasonal predictions are technically possible through combined meteorological-climatological methods, their skill level remains significantly limited, particularly in mid-latitude regions with high weather variability.
For these reasons, these products are not included in the Steadysun catalog.
Our Expert+ subscription tier provides comprehensive access to historical satellite-derived irradiance data through the SteadySat technology. 🛰️
This feature enables retrieval of satellite-estimated irradiance measurements from the moment of site creation up to the most recent satellite update (typically 15-30 minutes prior to current time, depending on your geographical location and satellite refresh rates). The historical satellite data includes GHI, DNI, DHI, and derived metrics with minute-level granularity, providing valuable insights for performance analysis, site evaluation, and operational benchmarking.
Contact our sales team for customized pricing and implementation details.
When creating your system, we strive to provide forecasts as quickly and accurately as possible.
As mentioned above, we use multi-model weather forecasts generated by us. As your site is potentially located in an area of the world where we do not yet provide forecasts, a delay of up to 40 min is possible for the generation of your first high-accuracy probabilistic forecasts.
Given that we already cover a large part of the world’s land surface, in the vast majority of cases, your forecasts will be available very quickly (5-30s) and will already include maximum precision (visible by the presence of quantiles). This is the case, for example, for the whole of Europe.
Should this unfortunately not be the case, a temporary deterministic forecast, derived from a single meteorological model (the American GFS model), will be displayed until the calculations have been completed.
Our platform maintains a comprehensive archive of all forecast data, enabling robust historical analysis and performance verification. Standard subscription tiers include access to a rolling 90-day forecast history that accumulates automatically from the moment your site is created in our system.
For advanced applications requiring extended historical data, we maintain permanent archives of all source weather data, processed forecasts, and verification statistics.
Our platform supports multiple integration pathways for connecting your real-time measurement data with virtually any third-party monitoring system, SCADA environment, or other platform.
Standard integration options include REST APIs with comprehensive documentation, secure SFTP data transfer protocols, and specialized connectors for major energy management systems.
The platform supports both push and pull data architectures with configurable data formats including JSON, CSV, XML, and industry-specific standards.
Our subscription process allows you to begin accessing forecasts within minutes !
After completing registration, you can immediately create your first site configurations and begin receiving forecasts.
For enterprise-level implementations requiring custom packages, volume pricing, or specialized configurations, our commercial team provides personalized onboarding assistance to ensure optimal setup for your specific operational environment.
🎁 Before committing to a subscription, you can test our services for free for 30 days to explore our forecasting capabilities. If you haven’t already, take advantage of this trial to ensure our solutions meet your needs.
No. Start with a single location and scale as needed—whether you’re expanding gradually or deploying across multiple sites simultaneously. 🚀
The platform’s dynamic pricing automatically applies volume discounts as your site count increases, ensuring cost-efficiency at every stage of implementation.
The platform features an intelligent subscription management system that dynamically adapts to changes in your monitoring portfolio.
When you add new sites, your subscription automatically updates within a one-hour modification window. A new invoice is generated immediately, covering the remainder of your current billing period and extending to the end of your initial contract (monthly or annual). Volume discounts are immediately applied to ensure cost efficiency as your portfolio grows.
For site reductions, your contract updates at the conclusion of your current billing term (monthly or annual), avoiding disruption to ongoing operations.
The system also includes a “site credit” feature — if you remove sites and later add an equal or lesser number within the same billing period, no additional charges apply.
Here are some examples:
To add extra services like SFTP delivery, dedicated tracking, and more, simply contact our sales team. Our experts will help you find the best package tailored to your needs!
Our platform offers three specialized site configurations to address distinct forecasting needs across meteorological and renewable energy applications:
📡 Meteorological Sites provide comprehensive atmospheric variable forecasting with minimal setup requirements. Simply specify location coordinates to access over +30 weather parameters including irradiance metrics, temperature variables, precipitation forecasts, and atmospheric conditions.
☀️ Photovoltaic (PV) Sites deliver specialized solar power production forecasts alongside comprehensive weather variables. The configuration engine supports advanced system modeling including multi-orientation arrays, tracking systems, bifacial modules, detailed loss parameters, and custom power conversion characteristics.
🍃 Wind Farm Sites generate detailed wind power production forecasts using advanced wind flow modeling. Configuration options include turbine specifications, hub height parameters, precise position mapping, power curves, and farm-level efficiency factors. The system accounts for complex terrain effects, wake interactions, and site-specific meteorological patterns to deliver highly accurate power output predictions alongside standard atmospheric variables.
While our system accommodates varying levels of configuration detail through intelligent default parameters, certain key specifications significantly enhance forecast accuracy:
For Photovoltaic Systems, we recommend providing at minimum:
The system automatically applies industry-standard values for other parameters like temperature coefficients, inverter efficiency curves, and system losses. However, providing these details when available will further improve forecast precision.
For Wind Farm Systems, optimal configuration includes:
All remaining parameters utilize intelligent defaults based on similar installations. Our configuration interface provides contextual guidance for each parameter, helping you understand the importance and impact of each setting on forecast quality.
Currently, this is not possible. Site relocation requires creating a new site with the correct geographical coordinates. To properly move a site:
The new site will receive a unique identifier (UUID), but you can maintain the same display name for continuity in your portfolio management.
Currently, complete site deletion is not available.
However, you can deactivate sites at any time, which will automatically adjust your billing. This allows you to reactivate sites instantly without losing their configurations.
For organizations with specific legal requirements regarding data retention or deletion, our team can implement custom protocols. Please contact us.
If you subscribe online, you can currently send data exclusively via the API. How your data is utilized depends on your subscription level:
Advance+ Plan: Your data is used for continuous calibration of your power production, ensuring automatic adjustments to loss parameters for improved accuracy.
Expert+ Plan: In addition to calibration, your data can enhance the accuracy of your forecasts in real time during API calls—provided you include the appropriate argument in your request.
By leveraging your data effectively, you can optimize performance and achieve more precise energy forecasts.
You can update your portfolio seamlessly by managing your sites through the API or the SteadyWeb interface:
API Management: Create or deactivate sites directly via the API, giving you full control over your portfolio while optimizing costs.
SteadyWeb Interface: Alternatively, you can manage your sites through the user-friendly SteadyWeb platform.
Keeping your portfolio up to date ensures efficient billing management and better operational control. 💪
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