Open Climate Fix

What Open Climate Fix does

Open Climate Fix is a UK non-profit research organization founded in 2019 by Dan Travers and Jack Kelly (formerly Technical Lead for wind power forecasting at Google DeepMind). The organization develops AI-powered forecasting tools that address the variability of weather-dependent renewable energy sources, with a primary focus on solar PV generation forecasting. Its core offering is Quartz Solar, the leading solar PV generation forecast across Great Britain, used daily in production by the UK's National Energy System Operator (NESO) and by power trading desks including Octopus Energy Trading. Quartz Solar integrates PVNet, an in-house machine learning model that synthesizes real-time photovoltaic data, numerical weather predictions from providers including ECMWF and the UK Met Office, and multi-spectral satellite imagery from EUMETSAT to produce probabilistic forecasts. In February 2025 the organization launched Cloudcasting, a world-first generative AI capability that predicts cloud movements by forecasting future satellite imagery up to three hours ahead with fifteen-minute update cadence, delivering a reported 100% improvement in solar forecast accuracy over traditional methods.

The product portfolio also includes wind forecasting, demand forecasting, distributed solar mapping, and an "Unlocking Energy Data" open-data initiative. All code is published openly on GitHub and datasets on HuggingFace and Google Cloud, positioning the organization as an open-source and open-data platform intended to maximize adoption and climate impact rather than financial returns. The customer base spans three primary segments: electricity grid operators (NESO in the UK, the Rajasthan State Grid Operator in India), power trading companies (Octopus Energy Trading), and renewable energy generators (Adani Green Energy's Khavda solar park). Revenue mechanics are a hybrid of grant funding (including a $600,000 grant from the Patrick J. McGovern Foundation in 2023 and UK government grants from DSIT and DESNZ), enterprise forecasting services delivered through direct relationships and a documented Quartz Solar API, and mission-aligned partnerships with academic institutions including the Alan Turing Institute and UCL. Distribution occurs via direct enterprise sales for live forecasting deployments and via open-source self-serve channels for the broader research and developer community.

Name

Open Climate Fix

Legal name

Open Climate Fix

Website

https://openclimatefix.org

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

11–50 employees

Short description

Open Climate Fix is a UK non-profit that builds AI-powered solar, wind, and cloud forecasting tools used by the National Energy System Operator, power traders like Octopus Energy, and India's Rajasthan grid and Adani Green, distributing its core Quartz Solar product via open-source code and enterprise deployments.

Ownership category

akta.pro rank

Product category

Renewable Energy Forecasting Software

NAICS

Computer Systems Design and Related Services (54151)

SIC

Services-Prepackaged Software (7372), Services-Computer Integrated Systems Design (7373), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Forecasting & AI Optimization for Flexibility (Load/Price/Renewables/SoC) (EUAFAKAH)

akta.pro secondary industries

Advanced Grid Integration & Control R&D (AI Forecasting, Digital Twins, Synthetic Inertia, Virtual Power Plants) (EUAMAOAG), Early Warning, Event Monitoring & Forecasting (Extreme Weather Alerts, Nowcasting) (EUABALAJ), Climate Adaptation & Resilience Programs (BPADALAD)

Keywords

• Solar forecasting software
• Renewable energy AI
• Wind forecasting tools
• Energy grid optimization
• Climate tech forecasting

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales

Revenue model

1. Industry Forecasting Services: Providing AI-powered solar, wind, and cloud forecasting services to electricity grid operators, power trading desks, and solar farm operators. Revenue derived from licensing forecasting technology and data services to enterprise customers including NESO, Octopus Energy, and Adani Green.
2. Open Source / Non-Profit Model: As a non-profit organization, Open Climate Fix relies on grants, donations, and government funding rather than traditional commercial revenue. Their open-source model encourages community contribution and adoption.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

Open Climate Fix develops AI/ML-based forecasting tools that predict solar, wind, and cloud movements to enable electricity grid operators and energy traders to manage weather-dependent renewable energy sources more efficiently. Their primary product, Quartz Solar, provides solar PV generation forecasts used daily by the UK's National Energy System Operator (NESO) and top power trading desks, supported by the Cloudcasting AI model that predicts cloud movements through satellite imagery.

Product overview

Open Climate Fix is a non-profit organization delivering AI solutions for renewable energy forecasting. The core offering centers on Quartz Solar, their leading solar PV generation forecast, supplemented by Cloudcasting (world-first AI cloud movement prediction), Wind Forecasting, Demand Forecasting, Solar Mapping, and Unlocking Energy Data products. The products integrate satellite imagery, numerical weather predictions, and real-time generation data to make energy systems more predictable, enabling cleaner and more cost-effective grid operations.

Differentiator

Problem solved

Functional benefit

Brands

• Quartz Solar: A cutting-edge AI solar forecast product that predicts solar energy generation from minutes to hours ahead. Used daily by the National Energy System Operator and top power trading desks across the UK.
• Cloudcasting
• Nowcasting Service

Products and services

• Quartz Solar The leading solar PV generation forecast across Great Britain, providing AI-powered predictions of solar energy output from minutes to hours ahead. Used daily by the National Energy System Operator (NESO) and top power trading desks including Octopus Energy Trading.
• Cloudcasting World-first AI innovation that predicts cloud movements through satellite imagery analysis. Generates forecasts of cloud movements and atmospheric conditions up to 3 hours ahead with 15-minute updates, improving solar generation forecast accuracy by 100% compared to traditional methods.
• Wind Forecasting AI-powered wind power generation forecasting that predicts wind energy output to help grid operators manage the increasing variability from renewable sources.
• Demand Forecasting AI tools for predicting electricity demand patterns to help grid operators balance supply and demand more effectively.
• Mapping Solar Power AI tools that locate rooftop solar generation and track electricity production to provide granular data on distributed solar assets.
• Unlocking Energy Data Open data initiative providing granular electricity and weather data that is vital for the energy transition but often hard to access and difficult to use.

Quantifiable outcome

• Halved large solar forecasting errors
• +5 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

AI capability7 records

Feature5 records

Partnerships

Ten partnerships are on record, tiered core, major and strategic.

• Alan Turing InstitutecoreStrategic or Co-development Partner · 1 January 2024Partnership on the Quartz Solar AI Nowcasting project to predict cloud cover and solar energy generation. Project aims to explicitly predict cloud movements for up to four hours ahead using AI to analyze satellite imagery and weather data. Collaboration enabled Manchester Prize finalist selection.
• National Energy System Operator (NESO)coreStrategic or Co-development PartnerNESO (formerly National Grid ESO) is the UK electricity system operator and primary customer. Uses Open Climate Fix's Quartz Solar AI forecasting tool daily in their control room for grid balancing. This flagship partnership demonstrates real-world operational deployment of the forecasting technology.
• Rajasthan State Grid OperatorcoreStrategic or Co-development PartnerCurrently forecasting both wind and solar power generation for Rajasthan, the Indian state grid operator with the largest renewables portfolio in India. This partnership demonstrates international expansion of Open Climate Fix's forecasting technology.
• Adani Green EnergycoreStrategic or Co-development PartnerWorking with Adani Green to provide forecasting for Khavda solar park, the world's largest solar park currently being built in Gujarat with over 30GW capacity. Partnership supports India's renewable energy expansion goals.
• Octopus Energy TradingmajorTechnology or IntegrationPower trading desk uses Quartz forecasting solutions for first-class insights into system fundamentals, significantly improving forecasting accuracy. Customer testimonial confirms improved trading outcomes.
• UK Met OfficemajorTechnology or IntegrationHistorical collaboration on solar PV nowcasting project. Met Office provides numerical weather prediction data and expertise that Open Climate Fix integrates with satellite imagery and ML models.
• Icebreaker OnestrategicStrategic or Co-development PartnerPartnership on the Open Energy project (Modernising Energy Data Access project) to develop open standards for sharing energy data. Collaboration aims to lower barriers to entry for innovators and help achieve net-zero emissions through improved data accessibility.
• PassivSystemsstrategicStrategic or Co-development PartnerPartner in Open Energy project, bringing expertise in demand-side flexibility. Collaboration with Icebreaker One and Open Climate Fix on standards for energy data sharing.
• University College London (UCL)strategicStrategic or Co-development PartnerResearch collaboration with Professor Marc Deisenroth (Google DeepMind Chair of Machine Learning and AI at UCL) who co-leads the Sustainability and Machine Learning Group at UCL. Professor Deisenroth co-authored research papers with Open Climate Fix and serves as a Research Director endorsement.
• Google DeepMindstrategicStrategic or Co-development PartnerStrategic collaboration through UCL connection. Marc Deisenroth serves as Research Director at Google DeepMind and collaborates on Open Climate Fix projects. Co-founder Jack Kelly previously worked at Google DeepMind as Technical Lead for wind power forecasting.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• StormGeo: Global provider of weather intelligence and decision-support services for energy, shipping, aviation, and media. Comparable to Open Climate Fix in serving energy traders and renewable asset operators with weather-driven forecasts, though StormGeo operates across many verticals beyond energy.
• DTN: Established commercial weather, climate, and commodity data provider serving agriculture, energy, and utilities with forecasting and decision-support tools. Overlaps with Open Climate Fix in solar/wind forecasting for energy traders and grid operators, though DTN operates across many adjacent verticals.
• IBM Environmental Intelligence Suite: IBM's commercial platform offering weather, climate, and environmental risk analytics for energy, utilities, and supply chain. Comparable to Open Climate Fix in renewable energy forecasting use cases and enterprise customer base, with substantially larger sales and integration footprint.

Emerging players

• Enverid (formerly known in adjacent space - using generic): Unable to confidently identify a strongly comparable solar/wind forecasting peer not already listed; placeholder omitted to avoid fabrication.
• GridBeyond: AI-driven demand response and energy management platform for industrial customers, grid operators, and distributed energy resources. Comparable in applying AI to grid optimization and flexibility dispatch, with adjacent rather than directly overlapping forecasting capabilities.
• Reuniwatt: French company providing solar irradiance forecasting using ground-based sky cameras and satellite data for grid operators and solar plant operators. Comparable to Cloudcasting in using satellite and imagery inputs for short-term solar forecasting, with overlap in target customers and methodology.

Direct peers

• Tomorrow.io: Commercial weather intelligence platform offering AI-powered forecasting and nowcasting APIs used by energy companies, logistics firms, and governments. Directly comparable to Open Climate Fix's Quartz Solar and Cloudcasting as a competing enterprise weather/renewables forecasting solution.
• Vortex (Vortex FdC): Spanish company specializing in meteorological and renewable energy forecasting services for wind and solar farm operators, traders, and grid operators across Europe and Latin America. Directly comparable in target customers (renewable IPPs, traders) and forecasting use cases.
• Solargis: Provider of solar resource data and forecasting for the solar energy industry, serving developers, operators, and grid operators globally. Comparable in offering solar irradiance and generation forecasts to utility-scale solar farms and financial institutions, directly competing for the same renewable forecasting customers.

Others

• Alan Turing Institute: UK national institute for data science and AI that collaborates with Open Climate Fix on the Quartz Solar AI Nowcasting project. Not a competitor but a research partner and ecosystem participant whose outputs may compete for research funding and visibility.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• GitHubgithub.com/openclimatefix
• LinkedInlinkedin.com/company/open-climate-fix
• Xx.com/openclimatefix

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds3 records

Investors3 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Open Climate Fix