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Upcoming key climate events to have on your radar
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“ Sustainability is climbing the agenda for more and more businesses, whether it’s driven by regulation, investor pressure, or simply a sense that things need to change. For anyone keeping an eye on this space, climate events are where the bigger picture comes into focus. ”
These gatherings bring together policymakers, businesses, and climate experts to discuss what’s working, what’s changing, and where things are heading next. For companies, they’re a useful way to stay ahead of regulatory developments, understand how peers are approaching climate goals, and spot opportunities for collaboration or innovation.
Below, we’ve rounded up the key climate events taking place in the second half of 2025 - mostly in Europe, with a few global ones included. Whether you’re attending in person or just following from afar, these are the moments worth knowing about.
UN Climate Change Conference (COP30)
What is it?
COP30 is the UN’s flagship climate summit, bringing together nearly every country to assess progress on the Paris Agreement and agree on new climate goals. Organised by the UNFCCC, it’s the central stage for global climate diplomacy. The 2025 edition will be held in Belém, Brazil – the first time a COP takes place in the Amazon. This location is symbolic, highlighting the urgency of protecting natural ecosystems and supporting climate justice. COP30’s agenda includes updated Nationally Determined Contributions (NDCs), finalising the new global climate finance goal, and advancing rules on international carbon markets under Article 6.
More than 60,000 delegates are expected, including heads of state, ministers, UN officials, NGOs, Indigenous groups, scientists, and thousands of business leaders. Corporate attendees often include sustainability and legal teams, ESG investors, and climate tech innovators.
COP30 will influence climate policy, finance, and regulation for the years ahead. Countries are under pressure to strengthen their climate pledges in line with the 1.5°C goal. Key decisions on emissions, carbon pricing, and adaptation funding will directly affect companies, especially those with international operations or supply chains. The summit is also a major platform for corporate announcements and partnerships, providing visibility and alignment with global goals.
10–21 November 2025, Belém, Brazil. Primarily in-person, with select sessions streamed online.
Climate Week NYC 2025
What is it?
Climate Week NYC is one of the world’s largest and most influential climate action events. Organised by Climate Group, it takes place annually alongside the UN General Assembly in New York. The week features hundreds of events - from CEO roundtables and high-level forums to cultural exhibitions and grassroots workshops - all focused on accelerating climate solutions across sectors. Themes typically include clean energy, sustainable finance, food systems, decarbonisation, biodiversity, and climate justice. It’s a key moment in the global climate calendar, attracting international attention and often used by organisations to launch new initiatives.
The event draws a wide range of stakeholders: corporate executives, investors, policymakers, mayors, NGOs, Indigenous leaders, scientists, and youth activists. Speakers often include UN officials, Fortune 500 CEOs, and heads of state. Many major companies host or sponsor events throughout the week.
Although it isn’t a UN summit, Climate Week NYC offers a unique platform for businesses to showcase leadership, forge partnerships, and align with global policy discussions. It’s also a valuable networking hub, connecting public and private sectors around shared climate goals. The hybrid format allows for broad participation, and many companies time announcements – such as new targets or sustainability reports – to coincide with the event’s global visibility.
21–28 September 2025, New York City. Hybrid format with extensive in-person programming and global virtual access.
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Austrian World Summit 2025
What is it?
The Austrian World Summit (AWS) is an annual climate conference hosted by the Schwarzenegger Climate Initiative, aiming to unite global leaders, innovators, and activists to discuss and implement effective climate solutions. The 2025 summit, themed “Unite in Action – Terminate Pollution”, will emphasise actionable strategies to combat pollution and promote sustainability. The event serves as a platform to showcase successful policies, best practices, and innovative solutions in the fight against climate change.
The summit attracts a diverse audience, including heads of state, policymakers, business leaders, scientists, and environmental activists. The event also features the AWS Solutions Expo, providing a space for companies and organisations to present their sustainable innovations and technologies.
AWS stands out for its focus on practical solutions and cross-sector collaboration. It offers businesses an opportunity to engage with policymakers, network with industry leaders, and gain insights into emerging trends in sustainability. The summit's emphasis on actionable outcomes makes it a valuable event for companies committed to environmental responsibility and innovation.
3 June 2025, Vienna, Austria. The event is primarily in-person, with registration opening on 23 April 2025. Participation is free, but due to limited capacity, tickets are allocated through a lottery system. Business tickets offering exclusive access are also available.
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EU Green Week 2025
What is it?
EU Green Week is the European Commission’s flagship annual conference on environmental policy. The 2025 edition, themed “Circular solutions for a competitive EU” will focus on how circular economy principles can drive sustainable competitiveness, reduce waste, and promote innovation across Europe. The event aims to explore the “three Cs” - Clean, Competitive, and Circular - highlighting the role of circularity in the EU's economic transition.
The conference attracts a diverse audience, including EU policymakers, business leaders, environmental NGOs, academics, and local authorities. Notable attendees often include European Commissioners, members of the European Parliament, and representatives from various industries. The event serves as a platform for stakeholders to engage in high-level discussions, share best practices, and forge partnerships.
EU Green Week 2025 provides a unique opportunity for businesses to align with the EU's environmental agenda, particularly in the context of the European Green Deal and the Circular Economy Action Plan. The conference will feature discussions on policy aspects of a circular economy, strategies for unlocking its full potential, and the role of innovation in achieving sustainability goals.
3–5 June 2025, Brussels, Belgium. The event will be held in person, with opportunities for virtual participation. Registration opens at the end of April 2025.
European Sustainable Energy Week (EUSEW) 2025
What is it?
EUSEW is the European Union’s annual event dedicated to promoting renewable energy and energy efficiency. Organised by the European Commission, the 2025 edition will centre on the theme “Powering a fair and competitive green transition”, aligning with the EU’s Clean Industrial Deal. This year’s event will also host the Sustainable Energy Awards, celebrating innovation and leadership in clean energy. EUSEW aims to foster discussions on sustainable energy policies, showcase solutions driving industrial competitiveness, and facilitate networking among stakeholders committed to Europe's energy transition.
EUSEW attracts a diverse audience, including EU policymakers, industry leaders, researchers, local authorities, and civil society representatives. Participants engage in policy sessions, workshops, and networking events, providing a platform for collaboration and knowledge exchange across sectors.
As Europe strives to achieve its climate and energy goals, EUSEW serves as a critical forum for shaping policy, sharing best practices, and highlighting successful initiatives. The event offers businesses and organisations the opportunity to stay informed about regulatory developments, explore funding opportunities, and connect with potential partners to advance sustainable energy projects.
10–12 June 2025, Brussels, Belgium, and online. The hybrid format allows for both in-person and virtual participation, ensuring broad accessibility for stakeholders across Europe and beyond.
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European Climate Change Adaptation Conference (ECCA) 2025
What is it?
The European Climate Change Adaptation Conference (ECCA) is Europe's biennial event dedicated to climate adaptation. The 7th edition, ECCA 2025, will convene from June 16–18 in Rimini, Italy, under the theme “Smarter, Faster and More Systemic Adaptation”. Organised by the MAGICA project and JPI Climate, this conference aims to foster collaboration among researchers, policymakers, practitioners, and stakeholders to accelerate adaptation strategies across Europe.
ECCA 2025 brings together a diverse audience, including climate scientists, urban planners, policymakers, business leaders, NGOs, and community representatives. The conference serves as a platform for sharing cutting-edge research, innovative solutions, and practical experiences in climate adaptation.
As climate impacts intensify, adaptation becomes crucial for resilience. ECCA 2025 addresses this by focusing on themes such as living with climate extremes, managing future-ready cities, protecting coastal and mountain areas, understanding the human and legal dimensions of change, and exploring adaptation finance to reduce vulnerabilities. The conference facilitates knowledge exchange, showcases best practices, and promotes systemic approaches to adaptation, aligning with the European Green Deal and the EU Mission on Adaptation to Climate Change.
16–18 June 2025, Rimini, Italy. The event will be held in person, with select sessions available online. Early bird registration is open until 18 April 2025.
European Sustainable Industry Summit 2025
What is it?
The European Sustainable Industry Summit 2025, organised by CSR Europe, is a gathering focused on building sustainable and competitive markets in Europe. Scheduled for June 24–25 at the Lamot Conference Centre in Mechelen, Belgium, the summit aims to unite business leaders, policymakers, and civil society to explore strategies for integrating sustainability into core business practices.
The summit attracts a diverse audience, including C-suite executives, sustainability officers, EU policymakers, and representatives from civil society organisations. Attendees engage in high-level plenary sessions, roundtables, and networking opportunities designed to foster collaboration and share best practices in corporate sustainability.
As Europe faces intensified global competition and evolving regulatory landscapes, the summit provides a critical platform for stakeholders to discuss how sustainability can drive business value and market leadership. Key topics include the integration of ESG principles, circular economy models, and diversity and inclusion practices into long-term growth strategies. The event emphasises the necessity of moving beyond compliance to leverage sustainability as a catalyst for innovation and competitiveness.
24–25 June 2025, Mechelen, Belgium. The event is in-person, offering attendees the opportunity to engage directly with Europe's sustainability decision-makers.
FT Climate & Impact Summit Europe 2025
What is it?
The FT Climate & Impact Summit Europe 2025 is an event organised by the Financial Times, focusing on driving actionable solutions to climate and sustainability challenges. Scheduled for May 21–22 at Bishopsgate in London, the summit aims to catalyse action, innovation, and investment by bringing together leaders from business, finance, and policy sectors. The event will address pressing issues such as climate disruption, geopolitical fragmentation, and the urgent need for sustainable development, with discussions on topics like the collapse of insurability, AI's energy demands, and resilient infrastructure.
The summit attracts over 250 attendees, including C-suite executives, investors, policymakers, and environmental experts. Notable speakers for the 2025 edition include Ana Toni (Executive Director, COP30), John Podesta (Former Senior Advisor, White House Office of Domestic Climate Policy), Sanda Ojiambo (Executive Director, United Nations Global Compact), and Johan Rockström (Director, Potsdam Institute for Climate Impact Research).
As only 17% of the UN Sustainable Development Goals are on track to be achieved by 2030, the summit serves as a critical platform for stakeholders to confront climate challenges and identify actionable solutions. It offers a 360° view on sustainability, covering policy, finance, energy, and technology, and provides opportunities for cross-sector collaboration, networking, and the development of strategies to accelerate net-zero goals.
21–22 May 2025, Bishopsgate, London. The event offers both in-person and digital participation options.
BloombergNEF Summit London 2025
What is it?
The BloombergNEF (BNEF) Summit London is an annual conference that unites leaders from energy, finance, technology, and government sectors to discuss and strategise on the global transition to a low-carbon economy. Since its inception in 2008, the summit has served as a platform for generating ideas, delivering insights, and fostering connections that aid in formulating successful strategies and capitalising on technological advancements for a cleaner, more competitive future.
The summit attracts a diverse audience, including C-suite executives, investors, policymakers, and thought leaders from various industries. Attendees engage in high-level discussions, panels, and networking sessions, providing opportunities to share perspectives and collaborate on solutions to pressing climate and energy challenges.
As the world faces increasing pressure to address climate change and transition to sustainable energy sources, the BNEF Summit London offers a critical forum for stakeholders to explore innovative technologies, investment opportunities, and policy frameworks. The insights and connections gained at the summit can inform strategic decisions and drive impactful actions towards achieving net-zero goals.
October 2025, London, UK.
Reuters Events: Sustainability Europe 2025
What is it?
Reuters Events: Sustainability Europe 2025 is a conference uniting over 500 leaders from business, finance, and policy to address Europe's evolving sustainability landscape. The event focuses on navigating new regulations, such as the Omnibus Package and the Clean Industrial Deal, and exploring strategies to build sustainable, resilient businesses.
The summit attracts a diverse audience, including CEOs, senior sustainability executives, finance professionals, legal experts, and policymakers. Attendees engage in discussions on sustainability reporting, net-zero strategies, sustainable investment, and the broader impact of sustainability initiatives across industries.
As Europe intensifies its focus on sustainability, this event provides a critical platform for stakeholders to understand and influence the direction of sustainable business practices. Participants gain insights into regulatory developments, share best practices, and forge partnerships to drive meaningful change. The conference emphasises the importance of aligning business strategies with sustainability goals to ensure long-term competitiveness and compliance.
21–22 October 2025, London, United Kingdom. The event is held in person, offering attendees the opportunity to network and collaborate directly with Europe's sustainability leaders.
“ Not every company will be able to attend these events in person - and that’s fine. Many offer hybrid options, and even just keeping an eye on key announcements can be useful. Whether it’s new climate rules, funding initiatives, or fresh thinking from industry leaders, these gatherings help shape the direction of travel. If sustainability is part of your role, or becoming part of it, they’re well worth following. ”
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What about Greenly?
If your company is looking to turn sustainability commitments into action, Greenly can help.
We work with businesses of all sizes to measure, manage, and reduce their carbon emissions. Our platform helps you track Scope 1, 2, and 3 emissions, identify high-impact areas, and build a practical, tailored reduction plan. We also support companies navigating emerging regulations - from CSRD to supply chain due diligence - and preparing for industry disclosures.
Whether you're just getting started or looking to take your climate strategy to the next level, we’re here to support you with:
- Comprehensive carbon accounting: Measure your emissions accurately, across all scopes.
- Customised reduction strategies: Set targets and take action with tailored recommendations.
- Regulatory guidance: Stay on top of EU and international reporting requirements.
- Supply chain support: Engage suppliers and improve visibility across your value chain.
- Science-based target preparation: Align with global climate goals and investor expectations.
Sustainability may be a long-term journey, but knowing where you stand and where to go next makes all the difference. Get in touch with Greenly today to find out more.
Sources:
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- Greenly, Why a Global Carbon Price Is Needed, https://greenly.earth/en-gb/blog/ecology-news/why-a-global-carbon-price-is-needed
- Climate Group, Climate Week NYC, https://www.climateweeknyc.org/
- Greenly, Your Guide to Sustainable Finance, https://greenly.earth/en-gb/blog/industries/your-guide-to-sustainable-finance
- Austrian World Summit, Homepage, https://www.austrianworldsummit.com/
- European Commission, EU Green Week 2025 – Official Event Page
https://environment.ec.europa.eu/events/eu-green-week-2025-06-03_en - Greenly, Circular Economy: Definition and Principles, https://greenly.earth/en-gb/blog/company-guide/circular-economy-definition-and-principles
- Greenly, What Is the European Green Deal? https://greenly.earth/en-gb/blog/ecology-news/what-is-the-european-green-deal
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- ECCA 2025, European Climate Change Adaptation Conference, https://www.ecca2025.eu/
- CSR Europe, European Sustainable Industry Summit 2025, https://www.csreurope.org/calendar/european-sustainable-industry-summit-2025
- Financial Times, Climate Capital Live – FT Climate & Impact Investing Summit, https://climateandimpact.live.ft.com/
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