What ClimateAction.tech CIC does

ClimateAction.tech CIC is a UK-registered Community Interest Company that operates a global, volunteer-run community of technology workers focused on climate action within the tech industry. Founded in 2017 as a Slack community and formally incorporated as a CIC on June 14, 2023, the organisation has grown to more than 10,000 members across the UK, USA, Canada, Switzerland, and India, with 300-500 weekly active participants. It serves a single horizontal persona — tech workers who want to decarbonise their organisations and their craft — and organises programming around four focus areas: Business Culture & Behavior Change, Green Software Engineering, Sustainable Product Design, and Low-Carbon Infrastructure.

The product surface centres on the Slack-based community workspace as the primary member hub, supplemented by Branch Magazine (an award-winning online publication on sustainable internet topics produced in partnership with the Green Web Foundation and featuring grid-aware website design), the CAT Mini Grants Programme (up to ~500 GBP/EUR/USD per grant for member-led projects), the #cat-roulette networking programme (~600 introductions/year via the Donut Slack integration), the Responsible AI Series (sponsored by ustwo, delivered with RevAIsor), the Systems Change for Sustainable Tech workshop series, the GreenOps Survey (2,680 respondents in 2024), the #EcoWeb Initiative (analysis of 500 climate websites' digital footprints), a weekly Buttondown newsletter reaching 10,000+ subscribers with ~50% open rate, and an annual Green Tech Hackathon in Zurich. Underlying tooling is built on Slack, WordPress, Miro, Zoom, Luma, Buttondown, OpenCollective, Donut, and Outline — all off-the-shelf platforms with no proprietary AI/ML or API surface.

The business model is that of a non-profit: free community membership with no pricing tiers, funded entirely by donations processed through the Open Collective platform. There are no paying enterprise customers, no revenue model from members, and no institutional investors or parent company. Governance is volunteer-led, with signals pointing toward a forthcoming community assembly and advisory board for broader decision-making. Operational scope is global (online community) with the UK as the legal domicile and primary in-person footprint.

Name

ClimateAction.tech CIC

Legal name

ClimateAction.tech Community Interest Company

Website

https://climateaction.tech

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

ClimateAction.tech CIC is a UK-registered Community Interest Company running a 10,000+-member global Slack community of tech workers focused on climate action, funded entirely by donations and producing educational programmes, Branch Magazine, and research on sustainable IT.

Ownership category

akta.pro rank

Product category

Climate Action Community Services

NAICS

Professional Organizations (81392)

SIC

Services-Membership Organizations (8600)

akta.pro primary industry

Carbon Neutrality/Claims Strategy & Communications (claims substantiation, greenwashing risk) (EUABAKAK)

akta.pro secondary industries

Virtual/Hybrid Conference Production & Platform Management (THAHACAM), Audit-Ready Controls, Assurance & Compliance Workflow Tools (CSRD/SEC/ISSB) (EUABAEAG)

Keywords

• Climate action community
• Green software engineering
• Sustainable tech network
• Tech worker organizing
• Community climate events

Headquarters

HQ city

Not specified

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Donations: Community donations via Open Collective platform. Donations fund the mini grants programme, software costs (Zoom, etc.), and community activities.
2. Mini Grants Funding: Funding from donations is redistributed to community members through mini grants programme for climate action projects. Each grant up to ~500 GBP/EUR/USD.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

ClimateAction.tech CIC operates a Slack-based community of practice connecting over 10,000 tech workers who collaborate on climate action in the technology industry. The organization runs event series, workshops, and an online publication called Branch Magazine, and administers a Mini Grants Programme that funds community-initiated sustainability projects. The Community Interest Company is 100% volunteer-run and funded by community donations through Open Collective.

Product overview

ClimateAction.tech CIC is a Community Interest Company operating as a global community of over 10,000 tech workers focused on climate action in the technology industry. The organization functions as a community platform rather than a traditional software product company, offering a Slack-based community as its primary member hub. The product portfolio includes community networking programs (#cat-roulette), educational event series (Responsible AI Series, Systems Change for Sustainable Tech workshops), funding mechanisms (CAT Mini Grants Programme), research initiatives (GreenOps Survey, #EcoWeb Initiative), and editorial content (Branch Magazine published in partnership with Green Web Foundation). The organization also runs an annual Green Tech Hackathon in Zurich and produces a weekly newsletter distributed to over 10,000 subscribers.

Differentiator

Problem solved

Functional benefit

Brands

• Branch: An award-winning online magazine written by and for people who dream of a sustainable and just internet for all, edited and funded by Green Web Foundation on behalf of the ClimateAction.tech community.
• CAT Mini Grants

Products and services

• ClimateAction.tech Slack Community Primary community platform serving as a central hub for climate-conscious tech workers to connect, discuss climate action topics, and share resources. The Slack workspace has grown to over 10,000 members with 300-500 weekly active participants across themed channels organized around Business Culture & Behavior Change, Green Software Engineering, Sustainable Product Design, and Low-Carbon Infrastructure.
• Branch Magazine Award-winning online publication exploring sustainable and just internet topics. Published by Green Web Foundation on behalf of ClimateAction.tech, featuring a grid-aware website design that adjusts based on local energy grid fossil fuel content.
• CAT Mini Grants Programme Funding programme providing up to approximately 500 GBP/EUR/USD to support community-initiated climate action projects. Funded by community donations, the programme supports initiatives aligned with the Theory of Change.
• Responsible AI Series Event and workshop series exploring the intersection of AI and climate change. Sessions cover topics including the environmental costs of AI, local language models, and values-driven risk assessment. Sponsored by ustwo and conducted in collaboration with RevAIsor.
• Systems Change for Sustainable Tech Series Multi-part workshop series teaching systems thinking methodologies to address sustainability challenges in technology. Covers shared vision building, current reality mapping using causal loop diagrams, identifying leverage points, and designing fundamental interventions for systemic change.
• #cat-roulette Community networking programme using the Donut Slack app to randomly pair members for connections every two weeks. Approximately 600 introductions are made annually, with members matched based on regional preferences.
• CAT Newsletter Weekly newsletter featuring community news, curated climate news, external events, podcasts, and job listings. Distributed to over 10,000 subscribers via Buttondown with approximately 50% open rate.
• GreenOps Survey Research initiative surveying IT professionals about sustainability KPIs and targets in enterprise IT. The 2024 survey received 2,680 responses globally.
• #EcoWeb Initiative Project analyzing the digital carbon footprint of 500 climate action business websites to create industry benchmarks for sustainable digital practices.
• CAT Hackathon (Zurich) Annual in-person hackathon held in Zurich, Switzerland focused on green technology solutions. Third edition held in May 2026 as an official partner event.

Quantifiable outcome

• 50% newsletter open rate
• +2 more outcomes

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature3 records

Partnerships

Five partnerships are on record, tiered core and minor.

• DonutcoreTechnology or Integration · 1 February 2021Donut Slack app used for the #cat-roulette programme to randomly match community members every two weeks for networking. Approximately 600 new intros made annually.
• Green Web FoundationcoreStrategic or Co-development PartnerGreen Web Foundation produces Branch magazine on behalf of ClimateAction.tech. Branch is an online magazine written by and for people who dream of a sustainable and just internet. GWF handles funding and editorial responsibilities for the publication.
• critical infrastructure labcoreStrategic or Co-development PartnerCollaboration on Branch Issue 9 'Attunement: Designing in an Era of Constraints'. Co-created the themed issue exploring grid-aware design and sustainable internet topics.
• RevAIsorminorStrategic or Co-development PartnerPartnered with CAT and ustwo to run a workshop on values-driven risk assessment for AI development as part of the Responsible AI Programme.
• Work on ClimateminorStrategic or Co-development PartnerCollaborated on Climate Justice Squads experiment over summer. Coordinated small themed groups meeting over multiple weeks on Climate Justice topics.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• BSR: Global sustainable business network advising large companies on climate and ESG strategy; an established incumbent in the same professional sustainability space, though operating at corporate rather than individual-member scale.
• Climate Reality Project: Large climate-education and advocacy network with trained volunteer speakers and chapters worldwide; broader incumbent that competes for climate-engaged volunteer mindshare.
• GreenBiz: Long-established media and events business serving the sustainability professional community; a broader incumbent in climate professional content that competes for the same reader/attendee attention as Branch and the CAT newsletter.

Direct peers

• WorkforClimate: Professional community mobilizing workers to advocate for employer climate action; highly comparable in mission, audience (tech and corporate workers), and member-driven advocacy model.
• Work on Climate: Community of professionals pursuing climate-impact careers; closely comparable as a peer-driven organizing community for climate-conscious workers, and named as a CAT partner.
• Green Software Foundation: Foundation focused on green software engineering practices and standards; overlaps directly with CAT's Green Software Engineering pillar and serves a similar tech-worker audience.

Others

• Tech Workers Coalition: Worker-led organizing community for tech employees; not climate-focused, but a structural peer on the tech-worker community-organizing model that CAT could learn from or partner with.

Emerging players

• Climate Action Programme: Runs events, awards, and a community for sustainability professionals; overlaps with CAT's events-and-education approach but skews toward in-person corporate sustainability audiences.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/ClimateActTech
• YouTubeyoutube.com/channel/UCbGj6AM6oTSxqBlhMQlaplw
• LinkedInlinkedin.com/company/climateactiontech

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

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 ClimateAction.tech CIC