SteadySat

Solar forecasts and live data based on satellite imagery

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For the next hours, for intraday forecasting need

SteadySat provides advanced solar irradiance and production forecasts up to 6 hours ahead. This product combines real-time satellite imagery with in-situ observations processing, weather forecast, physical models and artificial intelligence.

Cloud properties and evolution are monitored and predicted in real-time, improving the accuracy of solar forecasts for the next few hours and anticipating the risks of variability.

Satellite coverage

Intraday power forecast for a 12MWp PV plant (Germany) 

Intraday power forecast for a 12MWp PV plant

Intraday power forecast for a 17MWp PV plant (Australia) 

Intraday power forecast for a 17MWp PV plant

Satellite-based GHI forecast above Western Europe 

Satellite-based GHI forecast above Western Europe

6 hours 

Max time horizon 

5 - 15 minutes

Update frequency  

1 min 

Forecast time-step  

Power, GHI, DNI, DHI, GTI, Temperature, Wind 

Available parameters  

Site, Portfolio, City, Region or Country 

Coverage  

PV, Trackers, Bifacial, CSP 

Technology  

API, SFTP, etc. 

Data delivery  

P10, P20,… , P80, P90 

Confidence levels  

KEY BENEFITS

WORLDWIDE COVERAGE 

Real-time process of images coming from five geostationary meteorological satellites.  

ACCURACY IMPROVEMENT 

Frequently updated information of current and upcoming weather situations. Local weather effects are more accurately predicted at specific locations with nowcasting. SteadySat perfectly complements SteadyMet with precise intraday forecasts thanks to high-resolution remote sensing observations. 

TAILORED OUTPUTS 

In terms of parameters, update frequency, granularity and delivery settings. 

CUSTOMERS NEEDS

This product is tailored to meet your solar business needs. It is particularly suitable for the optimization of storage dispatch and intraday trading markets.

Anticipate electricity price evolution on spot power markets

Power trading & portfolio management

Optimize transactions on power markets. Reduce unbalancing costs. Manage risks.

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Solar forecasting for distribution system operators

Interconnected grid management

Reduce grid management costs.

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Irradiance forecasting for plant operations

Plant operation

Make your solar and wind power plants more profitable. Limit penalties, maximize revenues. 

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Solar forecasting for self consumption

Smart grids & smart cities

Define the best control strategy and maximize self consumption.

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METHODOLOGY

SteadyMet is based on an optimal combination of several Numerical Weather Prediction (NWP) models. These models simulate the evolution of the atmosphere (step 2) from initial atmospheric conditions estimated by assimilation of meteorological observation data over a global or local granularity (step 1). For this purpose, the area of ​​calculation is divided into a three-dimensional grid with more or less large mesh.


Weather model’s outputs of interest (solar radiation, temperature, wind, etc.) are then optimized (step 3), by using production/irradiance observations, to take into account local phenomena, and by leveraging artificial intelligence technologies.



Ready-to-use forecasts, in a customized format, are then disseminated (step 4) through our proprietary web interface, csv files delivered via (S)FTP platforms or API.

Step 1

DATA ACQUISITION

From 5 geostationary satellites.

Different channels providing information on the atmosphere, clouds and aerosols.

Every 5 to 15 minutes.

Step 2

MODELING 

Cloud detection, classification and motion prediction.

Accurate estimation of clear sky conditions using real-time aerosols prediction.

Calculation direct and diffuse irradiance components in cloudy conditions.

PV modeling based on physical models and plant features.

High-resolution topographical corrections (down to 90m).

Probabilistic forecasting using physical and statistical approaches.

Step 3

OPTIMIZATION 

Based on historical and/or real-time on-site measurements.

Continuous accuracy improvements using state-of-the-art machine learning techniques.

To take into account local weather phenomena and power plants’ behavior.

Step 4

DELIVERY 

Flexible delivery (API, SFTP, etc..).

Customized format (csv, txt, etc.).

Dedicated and secured web interfaces (visualization, data analytics and warnings).

Forecast performance monitoring.

METHODOLOGY  

SteadySat compiles live images from 5 geostationary satellites (step 1) and processes them (estimation of motion vector and application on the last available image) to estimate the clouds position for the next few hours. This cloud position is used to forecast the irradiance (step 2). The satellite imagery also allows us to estimate the global horizontal irradiance at acquisition time (10 to 15 minutes).

Forecasts are then optimized (step 3), by using production/irradiance observations, to take into account local phenomena, and by leveraging artificial intelligence technologies.

Ready-to-use forecasts, in a customized format, are then disseminated (step 4) through our proprietary web interface, csv files delivered via (S)FTP platforms or API. 

Step 1 data acquisition
Step 2 modeliing
Step 3 optimization
Step 4 delivery

Step 1

Step 2

Step 3

Step 4

DATA ACQUISITION 

MODELING 

OPTIMIZATION 

DELIVERY 

From 5 geostationary satellites.

Different channels providing information on the atmosphere, clouds and aerosols.

Every 5 to 15 minutes.

Cloud detection, classification and motion prediction.

Accurate estimation of clear sky conditions using real-time aerosols prediction.

Calculation direct and diffuse irradiance components in cloudy conditions.

PV modeling based on physical models and plant features.

High-resolution topographical corrections (down to 90m).

Probabilistic forecasting using physical and statistical approaches.

Based on historical and/or real-time on-site measurements.

Continuous accuracy improvements using state-of-the-art machine learning techniques.

To take into account local weather phenomena and power plants’ behavior.

Flexible delivery (API, SFTP, etc..).

Customized format (csv, txt, etc.).

Dedicated and secured web interfaces (visualization, data analytics and warnings).

Forecast performance monitoring.

Sign up for your 30-day free trial now! 

OTHER PRODUCTS AND SERVICES

Steadymet, day ahead solar forecasting

Forecasts using numerical weather prediction models

Reduce penalties

Plan and minimize spinning reserves

Sell electricity at the best price on day-ahead markets

LEARN MORE +
Steadyeye, next minutes solar forecasting

Forecast from ground based fisheye sky imagery

Anticipate intra-hour variations of production

Minimize and manage spinning reserves in real time

Reduce genset consumption and increase their lifetime

LEARN MORE +
Solar energy feasability study

Technical and economic studies on renewable energy and electrical systems

Assessment of gains brought by forecasting

Solar resource and yield assessment

Sizing and control of hybrid systems

Development of grid codes

LEARN MORE +
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Bâtiment Dauphin
18 rue du Lac Saint-André
73370 Le Bourget-du-Lac
France

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QUOS Group
18 Allée du lac Saint André
BP 40328
73382 Le Bourget-du-Lac
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