October 30, 2025

Episode 13: Juliette Devillard (Climate Connection) - Connecting the Climate Tech Community

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Juliette Devillard, Founder and CEO of Climate Connection, discusses community-led innovation, event design for climate tech, and the human side of scaling on Episode 13 of Scaling Green Tech, a podcast by Adopter.

Devillard founded Climate Connection in 2021 after returning from the US, where she worked with deep tech startups at Greentown Labs, the country's largest climate tech incubator. She argues that the UK climate tech ecosystem was fragmented and siloed compared to the US, and that better-designed events and stronger community infrastructure could accelerate the pace at which founders find investors, partners, and talent. Climate Connection grew from a small post-COVID meetup into the UK's largest monthly climate tech gathering, with early backing from Terra.do and a major contract with Innovate UK. Devillard also advocates for founder well-being as a prerequisite for long-term impact, and frames community-building as a practical tool for resilience rather than a networking exercise.

This episode is relevant for climate tech founders, startup community builders, event organisers in the deep tech space, early-stage investors interested in UK climate tech culture, and communications professionals working with technical founders.

Guest Profile

Juliette Devillard is the Founder and CEO of Climate Connection, the UK's largest community and events platform for climate tech founders, investors, and innovators. Before founding Climate Connection, Devillard worked with deep tech startups in the United States, including at Greentown Labs in Boston, the US's largest climate tech incubator. Her earlier career included roles at the United Nations, focused on cross-cultural diplomacy and communications. She holds expertise in public speaking coaching and startup communications, and is a public advocate for founder mental health and well-being.

Climate Connection runs Climate Tech Time, a monthly event bringing together approximately 150 climate tech professionals at The Conduit in London. The organisation also runs investor-specific and founder-specific events, a Community Partner Programme offering expert advice in areas including marketing, IP law, sales, recruitment, and PR, and has recently launched Connection Studio, an events design consultancy for clients in climate and beyond.

Climate Connection Website

Juliette Devillard LinkedIn

Key Takeaways

  • Climate Connection grew from a side project in 2021 to the UK's largest monthly climate tech event, with early funding from Terra.do and a key contract with Innovate UK. Events now consistently attract around 150 attendees from across the founder, investor, and corporate ecosystem.
  • Devillard argues that the UK climate tech ecosystem is more siloed and risk-averse than its US counterpart. She attributes this partly to cultural factors - entrepreneurship is less embedded as a norm in the UK - and partly to structural differences, including smaller funding rounds and higher proof-point requirements from investors.
  • Devillard frames founder well-being as a prerequisite for long-term impact, not a secondary concern. She recommends founders identify three professional and three personal contacts who form a resilient support circle, and have explicit conversations with those people about their role.
  • Climate Connection's Community Partner Programme provides early-stage startups with access to expert advisors across marketing, IP law, go-to-market sales, recruitment, and PR - areas that are difficult and expensive for founders to access independently at pre-seed and seed stage.
  • On communicating complex technical ideas, Devillard advises founders to start from the goal relative to the audience, then work backwards to identify the key message. Detail that does not directly support the narrative should be cut.
  • Devillard argues that climate tech companies should retain the term "climate tech" at an ecosystem level but adapt their framing for specific audiences. A home insulation product, for example, can be positioned around cost of living, energy efficiency, or carbon reduction depending on the context.

FAQs

  1. What is Climate Connection? 

Climate Connection is the UK's largest community and events platform for the climate tech sector. Founded in 2021 by Juliette Devillard, it runs Climate Tech Time, a monthly event of approximately 150 climate tech professionals, alongside investor-focused events, founder-only sessions, and a Community Partner Programme. The organisation designs events around audience needs and iterates based on feedback data, rather than following a sponsor-led format.

  1. What is Climate Tech Time? 

Climate Tech Time is a monthly gathering of climate tech founders, investors, corporate partners, and ecosystem supporters hosted by Climate Connection at The Conduit in London. It regularly attracts around 150 attendees from across energy, food, construction, and other sectors. The event format prioritises short speeches, audience interaction, and structured networking over passive panel attendance.

  1. How does the UK climate tech ecosystem compare to the US? 

According to Juliette Devillard of Climate Connection, the UK climate tech ecosystem is more fragmented and risk-averse than the US. US startup culture has stronger norms around entrepreneurship, higher willingness to fund early-stage ideas, and larger funding rounds with lower proof-point thresholds. The UK has a growing number of deep tech investors - Adopter's investor map found approximately 65% of early-stage UK green tech funds explicitly focus on deep tech - but the cultural and structural gap remains.

  1. How can climate tech companies navigate changing political environments? 

Devillard recommends that climate tech founders retain the term "climate tech" at an industry level but adapt messaging to specific audiences. The same technology can be framed around cost savings, efficiency, national security, or sustainability depending on who the audience is. She also advises founders to narrow their focus to controllable actions rather than reacting to macro-level political shifts.

  1. How can founders avoid burnout when scaling a company? 

Devillard advocates for building deliberate support circles of three professional and three personal contacts who can provide different types of support - from honest business feedback to emotional backing. She also recommends regular non-business check-ins with co-founders that address sleep, stress, unsustainable pace, and unspoken tensions rather than just deliverables.

Topics Covered

  • Climate Connection's event design philosophy and audience-first approach
  • The origin story of Climate Connection and early growth milestones
  • US versus UK climate tech ecosystems and cultural differences
  • Deep tech investment trends in the UK
  • Founder well-being and building resilient support circles
  • Co-founder check-ins and preventing burnout
  • Public speaking advice for technical founders
  • Communicating complex ideas to non-technical audiences
  • Navigating political headwinds and reframing climate tech
  • Diversity and gender balance in climate tech events and investment
  • Community-building as practical infrastructure for scaling
  • Climate Connection's Community Partner Programme and Connection Studio

Related Content

Episode 18: Cam Ross (Green Angel Ventures) - What Makes Climate Tech Investable

Episode 16: Federico Cristoforoni (Net Zero Insights) - The State of Climate Tech in 2025

Episode 3: Joanna O'Malley (NatureFinance) - Navigating Climate Events   

The Map of UK Green-Tech Investors

About Scaling Green-Tech

Scaling Green-Tech by Adopter is a podcast for people shaping the future of climate technology - founders, investors, and ecosystem leaders at the forefront of adaptation and resilience solutions. As part of Adopter’s mission to accelerate the adoption of high-impact climate innovation, the podcast aims to amplify real voices and practical insights that can help others navigate the startup journey. These conversations go beyond the hype to bring real, unfiltered stories - the wins, the roadblocks and everything you need to know in between.

Read the full transcript here
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