About Steadysun, your trusted partner for accurate energy forecasting

Together, contribute to a more sustainable, reliable and accessible energy future for all.

Better predictability - Less risk - More renewables

Steadysun team group photo outside INES in front of solar panels under cloudy sky

Our mission

Transform weather variability into a strategic advantage to accelerate the energy transition

Our team of meteorology and data science experts is committed daily to making wind and solar energy more predictable, profitable, and integrated into the global energy mix. By mastering weather uncertainty, we actively contribute to a more sustainable, reliable, and accessible energy future for all.

Steadysun, a pioneer in renewable forecasting since 2013

Driven by a clear vision – to actively participate in building a decarbonized world – we have been developing innovative forecasting solutions since 2013 that concretely accelerate the global energy transition.

Prestigious origins, a promising future

Steadysun was born from French scientific excellence, emerging from the CEA (French Alternative Energies and Atomic Energy Commission) and INES (National Solar Energy Institute). This prestigious lineage has equipped us with incomparable technical expertise and a rigorous approach to applied research.

Growth driven by innovation

Steadysun has transformed from a promising startup into a leading player in the field of solar and wind power production forecasting. Our technology now equips hundreds of installations worldwide, significantly contributing to the massive integration of renewable energies into the global energy mix.

Each forecast we deliver embodies our initial commitment: to create a more sustainable, predictable, and efficient energy future.

Logo of CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
Logo of INES (Institut National de l'Energie Solaire)
Large field of solar panels
Land-based turbine by the sea

Addressing the challenge of renewable variability

The massive development of renewable energies, particularly solar and wind, is the central pillar of usage electrification and achieving carbon neutrality by 2050 – an essential condition for limiting global warming to +4°C. These low-carbon energies display increasingly competitive costs compared to greenhouse gas-emitting fossil fuels, making their deployment economically indispensable.

However, sensitivity to weather conditions represents the main obstacle to the massive integration of renewable energies, impacting:

This is why Steadysun develops cutting-edge predictive solutions to transform this constraint into a strategic lever.

Our approach

We envision to make renewable energies as reliable and controllable as conventional sources, without compromising our climate.

By preparing energy players to manage intermittency with precision, our ultra-accurate forecasting technologies empower our partners to:

Freepik AI-generated plant growing from dry soil at sunrise
Transmission tower at dusk in a natural landscape

Let us help you optimize your operations with our ultra-accurate energy forecasts

We collaborate with a diverse group of actors accross the electricity value chain, supporting them through every stage of their projects: grid managers, project developers and energy management systems, power plant operators, off-grid micro-grid operators, energy traders, aggregators and research institutes.

Our core competencies are structured around different activities:

Our strength ?

Our cutting-edge multi-model approach combines meteorological expertise, advanced physical modeling, and artificial intelligence. This synergy enables us to deliver forecasts of unparalleled reliability.

Through our comprehensive quantile forecasts (P0 to P100), we measure uncertainty with precision, enabling risk-aware decision-making in volatile energy markets.

Graphs and sky imagers in Tahiti

Steadysun in a few figures

2013

Year of foundation

20

GWp forecast portfolio

24

Countries worldwide

18

Partners

Our values

The DNA behind every forecasts

A passion for innovation

We constantly push the boundaries of what is possible. Our engineers and meteorologists work relentlessly to create the energy solutions of tomorrow.

Performance

Excellence is not a finality, but a continuous commitment. Every algorithm, every model, every forecast is rigorously optimized to ensure increasingly reliable and efficient results.

Respect & celebration of diversity

We strongly believe that diversity is our greatest strength. By valuing different perspectives, experiences, and talents, we create an environment where innovation thrives naturally.

Customer satisfaction

We place people at the heart of every interaction. Listening, responsiveness, and transparency guide our daily commitment to provide tailored solutions and build lasting relationships of trust.

Environmental protection at the heart of our actions

Our forecasts drive the energy transition forward. We are committed to making renewable energy more reliable, powerful, and competitive, for a cleaner future.

+120 customers worldwide

Steadysun is aimed at all players of the electricity value chain

Steadysun provide cutting-edge forecasting products and services that enable actors across the entire energy value chain to accurately anticipate the variability inherent in solar and wind production. This mastery of intermittency provides them with a decisive strategic advantage to fully leverage their renewable assets.

Building on this expertise, we deliver solutions that help balance grids, reduce power plant operating costs, secure trading portfolios, and maximize self-consumption. Beyond economic gains, we accelerate the massive integration of renewable energies into the global energy mix by making them more predictable and controllable.

By transforming solar and wind into reliable and competitive resources, we contribute to a more sustainable, resilient, and accessible electrical system.

Solar and wind project developers

Secure your investments and optimize the sizing of your future power plants with our ultra-precise production forecasts.

Solar and wind power plant operators

Maximize the profitability of your installations by reducing balancing penalties and optimizing your maintenance interventions.

Solar and wind portfolio managers

Effectively balance your energy mix and reduce your exposure to risks related to weather variability.

Electricity traders & aggregators

Accurately anticipate available volumes to optimize your market positions and maximize your trading margins.

Electricity transmission and distribution network managers

Massively integrate renewable energies into your mix while maintaining grid stability and reducing balancing costs.

Energy management system (EMS) providers

Enrich your solutions with our forecasting APIs to offer your customers advanced energy optimization and intelligent control functionalities.

Our team

Passionate experts serving the energy transition

The Steadysun team unites passionate experts dedicated to making wind and solar energy more predictable, profitable, and seamlessly integrated into the global energy mix. 

With deep expertise in renewable energy, meteorology, artificial intelligence, and data science, they develop innovative solutions to tackle the challenges of weather variability.

Steadysun team outside INES – Side view with solar panels and building under blue sky

Our partners

Steadysun is involved in research and innovative projects with many industrial companies, research laboratories, universities and institutional organizations.

Career

Join our team and help shape the world of tomorrow

Do you want to give meaning to your career and actively contribute to the energy transition? We are constantly looking for talented and motivated people to join our team.

If you are motivated by technical challenges, data science, meteorology, or clean energy, your expertise will find fertile ground at Steadysun to fully express itself and make a difference.

Wind turbines on mountain at dusk
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