Thank you for your trust over the last decade. We wish all our customers, followers, supporters and friends a Happy and Prosperous New Year!
We are also very proud to announce that in 2020 we’ll be celebrating the 10th Anniversary of Reuniwatt!

A look back at what happened in Reunion Island over the last decade

Since the 1980’s the energy consumption on Reunion Island had been increasing rapidly. To counteract the increasing dependency on fossil fuels, the french government passed the Energy Transition Law for Green Growth (LTECV) and with it set ambitious goals for all french insular zones not interconnected with the continental power grid: 50% of renewable energy in the mix in 2020, and energy autonomy from 2030. One task remains to be solved: The local grid operator needs to rely on steady input from renewable resources. Reuniwatt was founded to tackle the the potential impact of PV injection on the grid stability on Reunion Island, at a time when there was a need for reliable solution for this problem. Today, 10  years later, solar irradiance forecasts are a standardly used way to allow a safe penetration of solar on the grid. As a pioneer in solar forecasting, it was our goal to develop the best skills in earth observation, which we have expanded through intensive research and development. Today we are proud to be a market leader in the field of energy meteorology and high-class all-sky cameras. 

Thank you all for your trust and support over the last decade. Thank you for all your questions, which will always allow us to learn more and expand our knowledge. We are looking forward to the next ten years of experiences.

New References Page

To start the year with new beginnings, we would like to introduce you to our new customer references page:

There you will find customer references and information on projects we have accomplished, such as our flagship project Le Portail on Reunion Island. By the end of 2017, 12 projects with electricity storage had already been inserted into the electrical system of Reunion Island, and Le Portail is a flagship project for PV + storage solutions on the island. It sits on top of E. Leclerc shopping centre in Saint-Leu and is the island’s first megawatt-scale rooftop installation, commissioned in 2014. With an installed capacity of 1MWp, the plant is equipped with lithium-ion batteries to ensure a stable power output. Go to our references page to download the project factsheet and learn more about our forecasting services in action.


About Reuniwatt (
Reuniwatt is a major player of the solar radiation and cloud cover assessment and forecasting. Based on solid Research and Development works, the company offers reliable products and services intended for professionals of various fields, making the best out of two key facets of the meteorology: atmospheric physics and data sciences. A particular focus has been placed on solar energy forecasting, while developing cutting edge solutions to improve the short-term prediction of the solar resource.
The company has won many grants, including H2020’s SME Phase 1 programme, which makes Reuniwatt a European Champion with regard to innovation.