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Solar Meilleur(scheduled to start in 2023)

Environmentally friendly Solar Meilleur supports the promotion of solar generated power as a main power source.

Environmentally friendly
Solar Meilleur supports the promotion of solar generated power as a main power source.

Output fluctuations due to cloudy sky is one of the issues in expanding the use of solar generated power.
Solar Meilleur uses IoT and AI to forecast future solar radiation conditions and promote the effective use of solar generated power.

  • POINT 01

    Solar radiation forecast

    • Based on the observation data that is regularly gathered from the "Solar TAMAGO" installed at the site, whole sky image analysis and solar radiation forecast AI system, a short-term (from 15minutes ahead or shorter) solar radiation can be forecasted.
    • On the other hand, the observation data from the meteorological satellite Himawari is used to predict solar radiation for more than one hour ahead.
    • By integrating these two types of forecast data, we perform more precise prediction.
  • POINT 02

    Solar TAMAGO

    "Solar TAMAGO" is a device with a built-in whole sky camera and meteorological sensor. It will be installed locally to gather whole sky images, solar radiation, temperature, and humidity.

  • POINT 03

    Service platform

    • Provides forecast data for the requested time from the customers
    • It also provides services such as submitting transmission plan to the OCCTO on behalf of customers.

What is Solar Meilleur?

Japan is aiming for a carbon-neutral society in 2050, announced the “carbon-neutrality by 2050" policy, and its efforts to reduce greenhouse gas emissions by 46% in FY 2030 from its FY 2013 levels, while continuing strenuous efforts in its challenge to meet the lofty goal of cutting its emission by 50%.

For this reason, in the 6th Strategic Energy Plan, solar generated power is positioned as the main power source with a forecast of 14% to 16% in 2030 (6.7% in 2019).

However, since solar generated power fluctuates greatly due to changes in the weather and clouds, it is essential to accurately forecast the amount of power generated by the amount of solar radiation to fully utilize it and provide a stable supply of electricity.

Since 2017, we have been developing the AI "KMOMY” that analyzes clouds, and by applying this technology combined with our IoT device “Solar TAMAGO" that utilizes whole sky image analysis, which resulted in the solar radiation forecast system "Solar Meilleur". We have greatly improved the accuracy of forecasting the amount of solar radiation from 15 minutes ahead or shorter, which previously was technically difficult to achieve.

On the other hand, The Central Research Institute of Electric Power Industry (CRIEPI), a nonprofit foundation, has developed a solar radiation forecast and analysis system "SoRAFAS" based on image data from the meteorological satellite Himawari, and is making forecasts for an hour ahead or more.

Together, we have integrated our short-term forecasting with the long-term forecasting of CRIEPI to enable forecasting of either short-term or long-term, and dramatically improve its accuracy, and with this hybrid system, we are aiming to start a full-scale solar radiation forecast service in 2022.

  • What is Solar Meilleur?

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