Reuniwatt
- Company typePrivate
- Founded2010
- HeadquartersParis, France
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
Reuniwatt firmographics
Firmographics- Name
- Reuniwatt
- Legal name
- Reuniwatt SAS
- Website
- https://reuniwatt.com
- Company type
- Private
- Founded year
- 2010
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Ownership category
- akta.pro rank
Reuniwatt industry classification
Industry- Product category
- Solar and Wind Power Forecasting Software
- NAICS
- Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)
- SIC
- Services-Computer Processing & Data Preparation (7374)
- akta.pro primary industry
- Solar Design, Engineering & Performance Software (PV Modeling, Digital Twins, Monitoring) (EUAMABAH)
- akta.pro secondary industry
- DER Data Management, Forecasting & Analytics (Solar/Load Forecasts) (EUADALAM)
Keywords
Where Reuniwatt is headquartered
LocationHeadquarters
- HQ city
- Paris
- HQ country
- France
- HQ region
- Europe
Offices3 records
Markets served
Reuniwatt business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Marketing or Sales, Supply Chain, Infrastructure, Operations
Revenue model
- Software-as-a-Service (SaaS) Forecasting: Subscription-based access to solar and wind power forecasting platforms including DayCast™, HourCast™, and InstaCast™. Customers pay for ongoing access to forecasts and data services.
- Hardware Sales: Sale of proprietary sky observation equipment including Sky InSight™ infrared all-sky imagers and Sky Cam Vision™ whole-sky cameras for cloud monitoring installations.
- Data Services: Satellite-based solar irradiance data services through SunSat™ providing historical, real-time, and forecasted irradiance data worldwide.
- Professional Services: Consulting and implementation services for solar plant operations, hybrid PV-Diesel systems, and specialized forecasting solutions for mining and off-grid applications.
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
Reuniwatt product offering
Product offeringCore offering
Reuniwatt develops and sells cloud observation hardware (patented thermal infrared all-sky imagers and whole-sky cameras), satellite-based solar irradiance estimation services, and solar/wind power forecasting software across multiple time horizons (intra-hour, intra-day, and day-ahead). Its products combine numerical weather prediction models with machine learning to deliver high-resolution cloud cover and irradiance forecasts for utility-scale renewable energy operators, grid managers, mining companies, defense/space agencies, and atmospheric researchers.
Product overview
Reuniwatt offers a comprehensive portfolio of cloud observation and solar/wind power forecasting products organized around three core technology pillars: (1) sky observation hardware including Sky InSight™ (thermal infrared all-sky imager for 24/7 cloud monitoring) and Sky Cam Vision™ (visible-range whole-sky camera); (2) satellite-based services via SunSat™ (kilometric-resolution irradiance estimation from geostationary satellites) and SunSat™ Digital Twin (asset health-check); and (3) forecasting software spanning multiple time horizons — InstaCast™ (intra-hour), HourCast™ (intra-day), and DayCast™ (day-ahead to 7-day). The forecasting products combine NWP models with machine learning. Additional offerings include PARCS (PV installation mapping from satellite imagery) and historic backtests for forecast validation. The portfolio serves renewable energy, atmospheric sciences, defense & space, and aviation sectors.
Differentiator
Problem solved
Functional benefit
Products and services
- Sky InSight™ Patented thermal infrared all-sky imager hardware that enables 24/7 continuous cloud cover monitoring with high accuracy, day and night, for solar plant operators, research institutions, and aviation/defense applications.
- Sky Cam Vision™ Whole-sky camera operating in the visible range for daytime cloud observation and solar irradiance forecasting, intended for ground-based installation at solar plants and research sites.
- SunSat™ Satellite-based solar irradiance estimation service that processes geostationary satellite imagery (Meteosat, MSG, Himawari-8) to retrieve cloud cover and ground-level solar irradiance at kilometric resolution for past, present, and future timeframes worldwide.
- SunSat™ Digital Twin Satellite-based health-check service for solar assets, providing real-time performance assessment of photovoltaic installations by comparing expected and actual irradiance.
- DayCast™ Day-ahead and up to seven-day horizon wind and solar power forecast service combining numerical weather prediction (NWP) model outputs with proprietary machine learning algorithms, for energy traders, utilities, and renewable portfolio managers.
- HourCast™ Intra-day wind and solar power forecasting service that continuously updates forecasts for the remaining hours of the day by ingesting real-time geostationary satellite imagery, for intraday trading and grid balancing.
- InstaCast™ Intra-hour solar forecasting service delivering minute-scale predictions derived from ground-based all-sky imager data, used for very short-term PV plant control, ramp event prediction, and hybrid PV-diesel system management.
- PARCS – Mapping of Solar Installations Photovoltaic installation mapping service using satellite and aerial image processing to produce precise and updated cartography of solar installations across a defined territory, for government agencies, grid operators, and project developers.
- Backtests – Historic Solar and Wind Power Forecasts Hindcast/historic forecast service that allows renewable energy operators to validate the performance of solar and wind power forecasts against historical weather and production data before purchase or deployment.
Quantifiable outcome
- Minute-scale PV production forecasting accuracy enabling precise ramp event prediction
- +2 more outcomes
Companies that use Reuniwatt
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles4 records
Reuniwatt technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability7 records
Feature8 records
Reuniwatt partnerships and signals
Strategic signalPartnerships
18 partnerships are on record, tiered core, major and minor.
- OHB Digital ServicescorePart of EO4ER consortium selected by ESA for Destination Earth initiative to develop Digital Twin Component prototype for the energy sector. OHB Digital Services provides IT and cutting-edge software development expertise.
- THU Smart Grids Research GroupcorePart of EO4ER consortium bringing Smart Grids Research Group expertise in energy data management and decentralized renewable energy integration.
- CNES (SOLiS Project)coreParticipates in SOLiS project funded by France 2030, contributing cloud prediction expertise to advance satellite-based optical communications technology.
- TotalEnergiesmajorTotalEnergies supports Reuniwatt's international development in Australia, providing resources and market access for renewable energy forecasting services.
- ESA (European Space Agency)coreSelected for Destination Earth flagship initiative through EO4ER project to develop Digital Twin Component prototype for energy sector risk assessment.
- SunologycoreCollaboration for residential solar irradiation forecasting through Sunology's STREAM app, providing unlimited irradiance estimates for residential solar producers.
- EUROCONTROLcoreEstablished contrail observatory at Reuniwatt's Innovation Hub supporting EUROCONTROL's contrail avoidance research and aviation climate impact reduction efforts.
- IGNfabcorePartnership with French National Geographic Institute (IGN) through IGNfab programme for PARCS project enabling satellite-based solar installation mapping across French territories.
- NOAAminorR&D partnership for atmospheric sciences and meteorological research collaboration.
- CNRSminorR&D partnership with French National Centre for Scientific Research.
- CNESminorR&D partnership with French Space Agency for space applications.
- DWDminorR&D partnership with German Meteorological Service.
- LATMOSminorR&D partnership with Laboratoire Atmosphères, Milieux, Observations Spatiales.
- KITminorR&D partnership with Karlsruhe Institute of Technology.
- Observatoire Côte d'AzurminorR&D partnership with Côte d'Azur Observatory.
- IGEminorR&D partnership with Institut des Géosciences de l'Environnement.
- Politecnico di MilanominorR&D partnership with Politecnico di Milano university.
- CzechGlobeminorR&D partnership with CzechGlobe research center.
Scale indicators4 records
Recent moves9 records
Expansion highlights6 records
Reuniwatt competitors and assessment
Company assessmentDirect peers
- Vortex: Spanish meteorological services company providing wind and solar resource data and forecasting for the renewables industry. Directly comparable offering to Reuniwatt's DayCast™/HourCast™/InstaCast™ with a similar utility/IPP target market across Europe and Latin America.
- Solargis: Slovakia-headquartered specialist in solar resource assessment and forecasting with global data services. Closely comparable to Reuniwatt's SunSat™ and forecasting product lines, serving the same utility, IPP and developer buyer base with overlapping PV-irradiance and grid-forecasting offerings.
- Steady Sun: France-based solar forecasting scale-up whose intra-day and day-ahead solar nowcasting products overlap directly with Reuniwatt's core business. Both compete head-to-head for French and European utility and energy-trader contracts.
Broad incumbents
- DNV: Global energy advisory and software powerhouse (formerly Garrad Hassan) offering renewables forecasting, resource assessment and asset-management software. Overlaps with Reuniwatt in solar forecasting and grid-integration services but at much broader scale and from a different business model (consulting-led).
- DTN: US-based provider of weather, climate and operational intelligence with energy-trading and renewable-power forecasting products. Overlaps with Reuniwatt's energy-trading and grid-management use cases but serves a much broader agricultural, aviation and commodities customer base.
- Meteoblue: Switzerland-based weather forecasting company with strong energy-sector products and high-resolution global models. Comparable to Reuniwatt's NWP+ML and satellite-processing stack but operating more broadly across industries rather than specialising only in solar/wind forecasting.
Emerging players
- Tomorrow.io: Weather intelligence SaaS company offering hyperlocal forecasts via proprietary sensors and ML, with growing energy and renewables applications. Comparable on the satellite/ML forecasting technology axis but currently focused on cross-industry weather data rather than the renewables-specialist niche Reuniwatt occupies.
- KISTERS: German vendor of environmental data, hydrometeorology and renewables-forecasting platforms. Comparable to Reuniwatt on the environmental-monitoring and forecasting SaaS side, particularly for European grid and water-management buyers, though KISTERS is larger and more software-portfolio diversified.
Regional players
- Weathernews Inc. Japan-headquartered global weather services company with energy-sector forecasting capabilities. Comparable forecasting competence and energy-industry focus but primarily anchored in APAC, providing regional rather than direct competition to Reuniwatt in Europe.
Others
- OpenWeather: UK-based weather data API and forecasting vendor serving energy, logistics and other sectors. Comparable as an alternative data and forecast supplier for utility/IPP buyers, though positioned as a commoditised data provider rather than the specialist renewables-forecasting offering Reuniwatt sells.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
Reuniwatt social profiles
Digital presenceReuniwatt financial estimates
Financial estimateRevenue estimate
Valuation estimate
Reuniwatt leadership team
Management profileNumber of profiles
Profiles2 records
Reuniwatt subsidiaries and ownership
Company hierarchySubsidiaries1 record
Reuniwatt funding detail
Funding detailFunding overview
Funding rounds2 records
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Reuniwatt M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Reuniwatt
What does Reuniwatt do?
Reuniwatt develops and sells cloud observation hardware (patented thermal infrared all-sky imagers and whole-sky cameras), satellite-based solar irradiance estimation services, and solar/wind power forecasting software across multiple time horizons (intra-hour, intra-day, and day-ahead). Its products combine numerical weather prediction models with machine learning to deliver high-resolution cloud cover and irradiance forecasts for utility-scale renewable energy operators, grid managers, mining companies, defense/space agencies, and atmospheric researchers.
Is Reuniwatt a public or private company?
Reuniwatt is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Reuniwatt founded?
Reuniwatt was founded in 2010. It employs 11 to 50 people.
Where is Reuniwatt based?
Reuniwatt is headquartered in Paris, France, in the Europe region.
How does Reuniwatt make money?
Four revenue lines are on record. Software-as-a-Service (SaaS) Forecasting is the primary driver. The others are hardware Sales, data Services and professional Services.
Who are Reuniwatt's main competitors?
Direct peers on record are Vortex, Solargis and Steady Sun. Broad incumbents are DNV, DTN and Meteoblue. Emerging players are Tomorrow.io and KISTERS. Weathernews Inc. is listed as a regional player. OpenWeather is listed as an others.
Does Reuniwatt have an API?
No public API is recorded for Reuniwatt.
What industry is Reuniwatt in?
Reuniwatt's product category is Solar and Wind Power Forecasting Software. Its primary akta.pro industry code is EUAMABAH, Solar Design, Engineering & Performance Software (PV Modeling, Digital Twins, Monitoring), with a secondary code of EUADALAM, DER Data Management, Forecasting & Analytics (Solar/Load Forecasts). Its NAICS code is 5182 and its SIC code is 7374.