As the final quarter of 2025 begins, the calendar is packed with conferences, forums, and summits shaping the future of climate tech. These gatherings are catalysts for innovation, deal-making, and long-term partnerships. Whether you’re a founder looking to showcase your solution, or an investor searching for the next breakthrough, these events create rare opportunities to connect directly with the people driving change.
From deep-dive discussions on policy and technology to networking sessions that spark lasting collaborations, Q4 offers a front-row seat to the conversations redefining the sector. Many of these events have registration deadlines fast approaching, so it’s worth planning ahead now.
We’ve compiled a comprehensive list to help you navigate what’s ahead. If you know of an event we should add, let us know—we’re always refining this guide to bring the most value to our community.
OCTOBER
October 1st
Financing Climate Resilience - How VCs and Startups raise capital to address climate challenges
Barcelona, SP
The fifth edition of Climate Dialogues will focus on one of the most decisive drivers of climate transition: financing. Mobilising capital towards innovative climate solutions is key to accelerating resilience and transforming strategic sectors of the economy.
In this session, we will bring together leading investors, entrepreneurs and ecosystem players to explore how start-ups access capital, what venture capital funds look for when financing climate technologies, and how this flow of resources can become a lever for systemic change.
October 1st
The 4th Annual European Tech for Climate Action
Brussels, BE
The event serves as a platform to position Europe as a leader in climate tech and sustainable growth by convening key stakeholders from across the ecosystem to discuss the latest EU policies and innovations.
October 1st - 2nd
Climate Tech Show
London, UK
The Climate Technology Show is set to be the leading global platform for innovation in climate technology, bringing together over 100 exhibitors and sponsors to showcase the latest advancements across key sectors. From Carbon Tech and Renewable Energy to Sustainable Mobility, Agri-Tech, and ESG-driven strategies, the event will highlight groundbreaking solutions shaping a greener future. Industrial Manufacturing and the Built Environment will also take centre stage, demonstrating how cutting-edge technologies like automation, AI, and circular economy practices are driving sustainability across industries.
October 8th - 9th
Carbon Capture, Utilization and Storage (CCUS) Conference 2025
Houston, TX, USA
Taking place from October 8-9 2025 in Houston, TX, the 3rd annual Wood Mackenzie Carbon Capture, Utilization and Storage (CCUS) Conference will bring together leaders from carbon emitting industries, policy makers, upstream players, project developers, financiers, EPCs, and midstream transportation, storage, and utilization providers to discuss the costs and economic feasibility of projects.
October 13th - 16th
SB’25 San Diego
San Diego, CA, USA
SB’25 San Diego is where sustainability, brand, and innovation leaders gain the insights, strategies, and connections needed to build future-fit brands that drive business value and good growth. This flagship event helps teams integrate sustainability into core business strategy, unlocking new opportunities through regenerative business models, circular systems, and next-generation governance.
For over 18 years, Sustainable Brands has convened a global community of business leaders committed to driving market transformation. At SB’25 San Diego, attendees will gain access to cutting-edge innovations, engage in collaborative problem-solving, and learn from real-world case studies that showcase the ROI of sustainability. By bringing together all parts of the business—sustainability, brand, marketing, and innovation—SB helps companies commercialize sustainability, turning responsible business practices into market opportunities that deliver both impact and financial value. Join us to explore the frameworks, insights, and collaborations that will help your brand lead in today’s evolving marketplace—delivering meaningful value for business, society, and the planet.
October 26th - 29th
Tech Crunch Disrupt
San Francisco, CA, USA
TechCrunch Disrupt is where you’ll find innovation for every stage of your startup journey. Whether you’re a budding founder with a revolutionary idea, a seasoned startup looking to scale, or an investor seeking the next big thing, Disrupt offers unparalleled resources, connections, and expert insights to propel your venture forward.
October 28th - 30th
The Verge
San Jose, CA, USA
VERGE empowers professionals decarbonizing and future-proofing their organizations and supply chains. Join the early movers and fast-followers financing and deploying novel and established climate technologies to gain insights on the future of the industry, navigate the changing policy environment, and deepen connections for collaboration.
The VERGE ecosystem is designed for corporate leaders who believe a sustainable and profitable future is possible, and the NGOs, service providers, startups and investors making that new world a reality.
This year, VERGE is part of Trellis Impact 25, giving attendees access to three leading events taking place together — VERGE, Bloom, and GreenFin. Trellis Impact 25 bridges climate and nature strategies with sustainable finance, empowering professionals to accelerate innovative solutions to our planet’s biggest challenges.
October 29th - 31st
World Recycling Convention
Barcelona, SP
The 3rd World Recycling Convention (Recycling Week 2025) is a premier international event, scheduled from October 29-31, 2025, in Barcelona, Spain. It brings together global industry experts to discuss advancements, challenges, and innovative solutions in waste management and recycling. The conference features key segments on recycling, e-waste, chemicals, and sustainable technologies, aiming to foster B2B collaborations, insightful keynote talks, and networking opportunities. By uniting recycling specialists, engineers, and industry leaders, it aims to address environmental concerns and enhance industry knowledge, driving progress toward sustainability and responsible waste management.
NOVEMBER
November 3rd - 7th
SOSV Climate Tech Summit
Online
The event is free, online, and designed to encompass the full breadth of the climate startup ecosystem. The summit will bring together top investors, founders, and scientists to discuss climate tech as an emerging category for startups and venture investing. Our goal is to deepen venture, academic, corporate, and media understanding of the accomplishments and potential of startups in climate tech. The co-producers of the event are SOSV senior operating partner Ned Desmond and SOSV partner Ben Joffe.
November 4th - 6th
The Belgian Impact Week
Brussels, BE
Every day, we feel the influence of the changing political landscape at home or externally and it has influenced every aspect of our lives, including the use of our money. Recent developments may be seen as a setback, demoralising even, but we see it as an opportunity for us to express a positive impact.
‘Investing for a Positive Impact in a New Reality’ is about affordable housing, education, health, and social entrepreneurship: It is about resilience, and this is what impact and sustainable investing are about.
November 10th - 12th
Clean Tech Forum
Barcelona, SP
Join us for Cleantech Forum Europe, an intimate community off-site event, outside the hustle of the city, that gives participants the chance to unplug and really connect with others. Enjoy the beautiful backdrop of the coastal town of Sitges, only 20 mins from Barcelona airport, over three-days of connecting, deal making, and sharing (participation capped at 300 to ensure top-notch connections and we are 30% sold out).
Explore strategies for navigating disruption, building competitive advantage through strategic resilience, and unlocking innovative financing mechanisms to accelerate Europe’s cleantech ambitions amidst a shifting global order. As the U.S. cleantech sector faces massive changes and uncertainty, this is a perfect moment to convene as a community and collaborate to strategically capitalize on this shift, and explore ways to attract U.S. investment and leverage Europe’s advantages. Participants will enjoy smaller and more interactive exchanges, enabling high-quality interactions with pioneers, leaders, and future stars of the European cleantech innovation ecosystem.
November 13th
Techtour Bio
Wuppertal, DE
Develop your investments, innovation and outlook in the bio-based sector. Immerse yourself in a dynamic environment dedicated to advancing bio-based solutions:
- Exchange with the most active venture capital and corporate investors.
- Engage with select companies in different tech tracks.
- Benchmark your technology and investment outlook with experts.
- Discover the innovation ecosystem in Germany.
November 19th - 20th
The Energy Management + Smart Buildings Expo
London, UK
For over a decade, emex has been widely acknowledged as the leading event in the UK for energy managers and those working towards a net zero future!
As the sector grows, we’re delighted to announce an exciting new step in our journey by welcoming an even bigger audience to the 2025 show including everyone involved with smart and connected buildings, as well as our loyal visitors from the energy, sustainability and facilities management space.
November 26th - 27th
Techtour
Essen, DE
Develop your investments, innovation and outlook in the Energy sector.
Join the 4th edition of our Sustainability flagship event, and meet in Essen to network with game-changers in various Energy sectors.
Exchange with 140+ of the most active venture capital and corporate investors. Engage with 60+ selected companies in different energy tech tracks. Benchmark your technology and investment outlook with experts.
DECEMBER
December 10th - 11th
Hack Summit NY
NYC, NY, USA
Abundance is redefining the future of climate and industry. For this year’s HackSummit, we’ll shift the conversation from reductionary approaches, and instead explore plentiness, and the new ways of manufacturing and adapting to a world that continues to grow.
Expect honest (and potentially heated) discussions on topics including, on-shore manufacturing, increased energy demand, post industrial food systems, supply chain resilience, automation, climate adaptation, weather modification and Climate Tech’s role in defense and sovereignty.
Come join 500 Stealth to Series B Founders, strategic investors, corporates, banks, and asset managers looking for their next
Did we miss any? Send us an email here.
LOOKING FORWARD INTO Q1 2026...
There are a lot more events to choose from
The above list is a comprehensive list of climate tech events/forums/and conferences. But there are many more webinars, talks, and courses out there! Every week we update our curated calendar of events and accelerator deadlines exclusively for members.
