Top 20 Green Sustainability Events to Attend in 2026

Summary:

• The UK hosts dozens of sustainability and energy conferences each year.
• Major sustainability events attract 2,000–7,500+ attendees, which reflects how fast ESG, net zero, and clean growth have moved into the business mainstream.
• Ticket prices vary dramatically from free industry expos to £1,500+ executive summits, which makes it essential to understand what each event actually offers.
• Sustainability events have agendas that cover finance, supply chains, policy, innovation, skills, and real-world implementation.
• Attendee expectations have changed. Research shows professionals now prioritise practical insight, transparency, credible speakers, and meaningful networking over generic green messaging.

Note: Event details are correct at the time of writing but may be subject to change.

Looking for a sustainability event in the UK, but not sure where to start?

There are now more conferences and expos than ever, each with its own focus, ticket price, and style.

From high-powered gatherings of over 7,000 professionals to focused workshops for smaller groups, the UK’s £68 billion events industry is booming, and sustainability events are a growing segment.

But the real trick to choosing the best sustainability event in the UK is not just choosing by date or location; it’s finding the event with an agenda and approach that fits your role, sector, and ambitions.

This guide will help you quickly scan your options and find the right fit—whether you’re a business leader, investor, or sustainability professional.

Also read: Plant-Power: The UK’s Top 10 Vegan Festivals 2025

Our Top Sustainability Events in the UK for 2026 – By Quarter and Ticket Price

Q1: January–March 2026

1. Oceanology International (Oi26) (10–12 March 2026)

Oceanology International (Oi26) is the world’s largest ocean technology and science event. Experience cutting-edge innovation across the blue economy, with live demos, B2B matchmaking, and global networking, all for free.

• Venue: ExCeL London
• Ticket Price & Options: Visitor Tickets – FREE
• Key Agenda Details: 3-day conference, technical sessions, dockside demos, and a dedicated B2B Matchmaking Event (11 March).
• Key Speakers: Wide line-up across technical and blue economy tracks
• Highlights:
  1. B2Match programme for 1:1 meetings
  2. Dockside Activity with live demos
  3. COAST Zone for coastal/shallow water sectors
  4. Future Tech & International Pavilions
  5. OceanSocials for informal networking

2. Reset Connect North 2026 (3–4 March 2026)

Reset Connect North 2026 is a bold regional spin-off of the award-winning net zero show, spotlighting the North’s £25bn low-carbon economy and green infrastructure innovation.

• Venue: Royal Armouries, Leeds
• Ticket Price & Options: Visitor, Student, Investor, Press Passes – FREE; VIP Delegate – £175 early bird, £250 standard
• Key Agenda Details: “Transforming Business & Industry” and “Transforming Cities & Communities” stages; Innovation & Investment Hubs; VIP workshops
• Key Speakers: Tracy Brabin (Mayor of West Yorkshire), Martin McCluskey, Susan Aitken, Oliver Holbourn
• Highlights:
  1. Pitch & Invest for startups
  2. Part of West Yorkshire Innovation Festival
  3. Innovation Hub on the show floor
  4. Sponsored by KPMG
  5. Celebrating the North’s green leadership

3. Sustainable Skies World Summit 2026 (17–18 March 2026)

Sustainable Skies World Summit 2026 is the go-to global sustainability event for aviation’s net zero transformation, hosted by the Farnborough International Airshow team. It brings together airlines, airports, OEMs, regulators, and investors to tackle challenges in sustainable aviation.

• Venue: Farnborough International Exhibition & Conference Centre, UK
• Ticket Price & Options:
  1. Visitor Pass: FREE (2-day access, conference theatres, networking, workshops)
  2. Media Pass: FREE for accredited media (includes press briefings, workshops, media kit, priority press access)
• Key Agenda Details: Five main themes – Sustainable Aviation Fuels (SAF), Future Flight (eVTOLs/electric), Zero Emissions, Operational Efficiency, Carbon Removal
• Key Speakers: 120+ global leaders (past speakers: Shai Weiss – Virgin Atlantic, Sean Doyle – British Airways, Julie Kitcher – Airbus)
• 5 Key Highlights:
  1. Synergy with the Farnborough International Airshow
  2. 30 hours of structured and informal networking
  3. Candid focus on the “practical reality” of SAF, hydrogen, and new air mobility
  4. Free, hands-on workshops for all visitors
  5. Truly global scale: 58+ partners/sponsors, media reach of 660 million

4. THE FORESIGHT EVENT 2026: Conference + Exhibition (4–5 February 2026)

THE FORESIGHT EVENT 2026 is a sustainability event where policy, investment, and tech collide to accelerate the UK’s clean energy transition, with a strong focus on cross-sector networking.

• Venue: Titanic Hotel (Rum Warehouse), Liverpool
• Ticket Price & Options:
  1. Conference Pass (per day): £100
  2. Networking Event (4 Feb): £100
  3. Bundle for 1: £250
  4. Bundle for 5: £1,000
• Key Agenda Details: Energy policy, grid modernisation, net zero finance, hydrogen scale-up, AI-powered manufacturing
• Key Speakers: Adam Baddeley (Progressive Energy).
• Highlights:
  1. Industrial Strategy Roundtable (Net Zero North West)
  2. Live debates/startup pitches
  3. AI-powered manufacturing focus
  4. Evening networking (4 Feb)
  5. Energy-industry interdependence sessions

5. Energy Ireland Renewable Energy Summit 2026 (5 February 2026)

Energy Ireland Renewable Energy Summit 2026 is Ireland’s flagship sustainability event for the renewable energy sector (now in its 22nd year) connecting 200+ leaders for real debate on clean energy.

• Venue: Croke Park, Dublin
• Ticket Price & Options: Delegate Rate – €395 + VAT
• Key Agenda Details: Ministerial and EU sessions; sustainable low-carbon system enablement; AI in energy; offshore wind
• Key Speakers: Timmy Dooley TD, Paula Rey Garcia, Thomas Spencer, Paul Lennon
• Highlights:
  1. Plan for 80% renewables by 2030
  2. Offshore wind after Tonn Nua ORESS
  3. Biomethane sector deep dive
  4. AI’s impact on energy
  5. Top-tier networking

6. edie 26 (25–26 March 2026)

edie 26 is the UK’s leading sustainable business summit with 150+ speakers and a practical, solutions-first approach to “Climate Resilience into Climate Resurgence.”

• Venue: Business Design Centre, London
• Ticket Price & Options:
  1. edie Members: £449
  2. Sustainability/Corporate (Individual): £599
  3. Non-Profit/Academic/NGO: £499
  4. Solution Provider: £799
• Key Agenda Details: Six themed stages; deep-dives on climate, circularity, skills, energy, reporting, innovation
• Key Speakers: Mike Berners-Lee, Paul Dickinson, Juliet Davenport, John Elkington
• Highlights:
  1. Innovation Pavilion with Earthshot Prize
  2. Collaboration Hub & hackathons
  3. 1:1 advisory clinics
  4. B Corp Mixer event
  5. 150+ expert speakers, 40+ solutions

7. Climate and Energy Summit 2026 (10–11 March 2026)

Explore resilience, geopolitics, and the future of net zero in an era of rapid change at Climate and Energy Summit 2026 – a  high-level networking and sustainability event for global thinkers.

• Venue: Hybrid – Chatham House, London + Online
• Ticket Price & Options: In-person: £550–£1,550 + VAT (early bird)
• Key Agenda Details: Geopolitics of energy, climate futures, critical minerals, water resilience
• Key Speakers: Bill Esterson, Emma Pinchbeck, André Hoffmann, Marcela Chacón
• Highlights:
  1. 50+ expert speakers
  2. Interactive workshops (Chatham House Rule)
  3. Hybrid/live virtual platform
  4. International audience (30+ countries)
  5. Land/biodiversity resource security

8. EnviroTech London 2026 (15–18 March 2026)

EnviroTech London 2026 is the definitive sustainability event for decarbonising the cement sector, with hard-hitting technical sessions and exclusive networking.

• Venue: Park Plaza London Riverbank, London
• Ticket Price & Options:
  1. Early Bird: €1,430 (sold out)
  2. Standard: €1,625 + VAT
• Key Agenda Details: Green cement innovation, calcined clay, AI panel, GCCA/MPA/ITA keynotes
• Key Speakers: Thomas Guillot, Diana Casey, Dan Hayes, Hamed Maraghechi
• Highlights:
  1. Technical presentations from Holcim, Cemex, Heidelberg.
  2. High-profile panel debates
  3. Daily networking receptions
  4. Access to industry specialists
  5. Focused exhibition

Q2: April–June 2026 Sustainability Events

9. National Sustainability Summit (27–28 May 2026)

Co-located with the National Manufacturing & Supply Chain Expo, National Sustainability Summit is Ireland’s main event for turning Climate Action Plan targets into practical solutions. Access both summits with a single (free) ticket.

• Venue: RDS Simmonscourt, Dublin, Ireland
• Ticket Price & Options: FREE (with online registration)
• Key Agenda Details: Sessions on renewable energy transition, circular economy, water conservation, and ESG compliance
• Key Speakers: Adurasey Aduraseyi (IMR), Alan Waters (AIB), Joan Mulvihill (Siemens Ireland)
• 5 Highlights:
  1. Dual access to both the Sustainability Summit and Manufacturing Expo
  2. Ireland’s 70% renewable by 2030 target as a headline focus
  3. Over 200 exhibitors from across supply chains and tech
  4. Sessions on electric vehicles and retrofit programs
  5. Hands-on engagement with experts in recycling innovation

10. All-Energy (13–14 May 2026)

As the UK’s largest clean energy expo (in its 25th year), All-Energy brings together all parts of the energy supply chain for strategy, upskilling, and on-demand content.

• Venue: SEC (Scottish Event Campus), Glasgow
• Ticket Price & Options:
  1. Visitor: £49 (from 11 May)
  2. Student/Media/Speaker: By application
• Key Agenda Details:
  1. Strategic Summit: Decarbonising transport, heat, cities
  2. Themed show floor: Hydrogen, Offshore Wind, Solar & Storage, Future Grid
• Key Speakers: Kate Forbes MSP, Michael Shanks MP, Keith Anderson (ScottishPower)
• 5 Highlights:
  1. Giant networking evening (13 May)
  2. New Strategic Summit Committee
  3. Eight themed theatres for technical learning
  4. Future Talent Theatre (skills gap focus)
  5. On-demand content library post-event

11. Innovation Zero World Congress (28–29 April 2026)

Innovation Zero World Congress is the UK’s premier low-carbon innovation congress, connecting 7,500+ attendees and 300+ exhibitors, where new tech and capital meet the government.

• Venue: Olympia London, Hammersmith
• Ticket Price & Options:
  1. Expo/Main Stage: £95 + VAT (super early bird)
  2. Content Access: £220 + VAT (super early bird)
  3. VIP: £2,000 + VAT
  4. Guest Pass: By invitation
• Key Agenda Details: Forums on Energy, Infrastructure, Finance, Industry, Supply Chains, Innovation Showcase
• Key Speakers: Nigel Topping, Prof. Emily Shuckburgh CBE, Lord Adair Turner, Dr. Rhian-Mari Thomas OBE
• 5 Highlights:
  1. 7,500+ delegates, 300+ exhibitors
  2. New Innovation Showcase
  3. Paid-attendance for higher decision-maker ratio
  4. Cross-cutting themes: Accelerating Innovation, People, Places
  5. AI-powered app for curated networking

12. ESG & Sustainable Business Summit 2026 (15 April 2026)

ESG & Sustainable Business Summit 2026 is a practical summit guiding businesses beyond compliance, to make sustainability their core value and competitive edge. Attend this to benefit from actionable strategies on planetary boundaries, biodiversity, and profitable ESG models.

• Venue: Croke Park, Dublin
• Ticket Price & Options:
  1. Delegate: €275 + VAT
  2. 3 for 2: €550 + VAT
  3. 5 for 3: €825 + VAT
  4. Includes lunch, refreshments, and 3-month ie subscription
• Key Agenda Details: Doing business within planetary boundaries, climate adaptation in ESG, profit-purpose business models
• Key Speakers: Jackie Bryan (Facilitator), Wayne Leitch (Lead Partnership Manager)
• 5 Highlights:
  1. Decarbonising operations and supply chains
  2. Biodiversity as a core business concern
  3. ESG as the new SME credibility standard
  4. Large-scale networking
  5. Post-event access to all materials

13. Flood & Coast 2026 (9–11 June 2026)

Flood & Coast 2026 is the essential UK event for professionals tackling flood risk and coastal change, packed with 265+ speakers, technical skill workshops, and sector awards.

• Venue: Exhibition Centre Liverpool
• Ticket Price & Options:
  1. Private sector: 1-day (£295), 2-day (£395), 3-day (£495) + VAT
  2. Public sector: 1-day (£236), 2-day (£316), 3-day (£396) + VAT
  3. Student Pass & Exhibition-only: FREE
• Key Agenda Details: Policy, investment, SuDS/nature-based solutions, resilience
• Key Speakers: Selected from call for papers (265+ experts)
• 5 Highlights:
  1. Theme: “Policy to Practice: Achieving Resilience Together”
  2. 50% early career discount with a delegate ticket
  3. New Technical/Critical People Skills theatres
  4. First time in Liverpool
  5. Gala Awards Dinner

14. Private Capital Sustainability Conference (21 April 2026)

Private Capital Sustainability Conference is where GPs, LPs, and policymakers meet to dissect the role of private capital in the green transition.

• Venue: The Minster Building, London EC3R 7AG
• Ticket Price & Options:
  1. GP/LP Members: Complimentary
  2. Professional Services: £799 + VAT (early bird) / £999 + VAT (standard)
  3. Non-members: On request
• Key Agenda Details: Green political agenda, innovative finance, GP/LP impact expectations
• Key Speakers: Michael Moore (BVCA Chief Executive)
• 5 Highlights:
  1. Dragon’s Den–style value-creation pitches
  2. ESG sentiment vs. operational reality
  3. Net Zero as an investor decision driver
  4. Tools for unlocking climate capital
  5. Sustainability regulation strategies

15. Climate & Impact Summit (17 – 18 June 2026)

Run by the Financial Times, Climate & Impact Summit assembles the most influential voices to chart the role of business in global climate accountability and resilience.

• Venue: The Biltmore Mayfair, London
• Ticket Price & Options:
  1. In-Person (Super Early Bird): £1,379 + VAT
  2. Digital: £159 + VAT
• Key Agenda Details: Investable resilience, nature as infrastructure, agrifood transition, AI’s decarbonisation role
• Key Speakers: Past: Al Gore, Bill Gates, Mia Mottley (PM Barbados)
• 5 Highlights:
  1. Moderation by FT’s Moral Money/Climate Capital teams
  2. Over 50 countries represented
  3. Finance/government/manufacturing cross-sector mix
  4. AI-powered 1:1 meeting scheduler
  5. Practical, profit-linked policy sessions

Q3/Q4: July–December 2026 Sustainability Events

Note: Some Fall/Winter events’ information is not yet available, and more events are likely to be announced. This guide will be updated with the latest details mid-year.

16. ESS Expo (Environmental Services & Solutions Expo) 2026 (16–17 September 2026)

ESS Expo is the UK’s largest environmental services show that unites the full sector (circular economy, net-zero, biodiversity, waste) for high-volume networking, innovation showcases, and hands-on demonstrations.

• Venue: NEC Birmingham
• Ticket Price & Options: FREE (single ticket gives access to all 7 co-located expos)
• Key Agenda Details: 240+ presentations, live technology demos, the EMMA awards, 198+ demonstrations
• Key Speakers: 400+ speakers (incl. Environment Agency reps)
• 5 Highlights:
  1. Seven top shows, including RWM and WWEM, under one roof
  2. 16,000+ visitors, 700+ exhibitors
  3. Start-Up & Scale-Up Zone; Green Skills Hub
  4. Career-focused, with student and jobs zones
  5. End-to-end sector coverage: air, water, waste, remediation

17. ReGeneration Earth UK 2026 (20–21 October 2026)

ReGeneration Earth UK 2026 is touted as “Europe’s Answer to COP,” this forum moves beyond talk and facilitates deals and partnerships for UK regional green growth, across investment, policy, and innovation.

• Venue: Royal Armouries, Leeds
• Ticket Price & Options:
  1. Standard: £350 (£420 inc. VAT)
  2. Early Bird Corporate: £280 + VAT
  3. Early Bird SME: £210 + VAT
  4. Early Bird Public/Third: £140 + VAT
• Key Agenda Details: Debates, curated deal-flow in private lounges, post-event specialist summits
• Key Speakers: Regional mayors, sustainability CEOs, investors, youth leaders
• 5 Highlights:
  1. Investment Zone with 1:1 meetings
  2. Place-Based Innovation with every Combined Authority
  3. Regional Action Networks for follow-through
  4. Full-spectrum focus (environment, equity, circular growth)
  5. Action-focused “contracts for action” delivery

18. Sustainability LIVE: The London Summit + Awards 2026 (8–9 September 2026)

Sustainability LIVE: The London Summit is a hybrid summit and exhibition for senior sustainability leaders with special focus on fast, practical strategies for net zero and ESG. Includes awards, workshops, and global live-streaming.

• Venue: QEII Centre, Westminster, London
• Ticket Price & Options:
  1. General: from £583.20
  2. Early Bird: save £200+
  3. Media Pass: Free for qualified professionals
• Key Agenda Details: 10 themes (Circularity, Decarbonisation, ESG, etc.), 4 executive workshops, keynote sessions, plus co-located Procurement & Supply Chain LIVE
• Key Speakers: 50–60 leaders; names TBA, but typically senior execs from major brands
• 5 Highlights:
  1. Global Sustainability Awards ceremony
  2. Specialized summits (Fashion, Nature-Based Solutions)
  3. Hybrid: 1,000+ in person, worldwide online
  4. Direct brand decision-maker access
  5. Media pass and digital options for broad accessibility

19. Source Fashion (7–9 July 2026)

Source Fashion is the UK’s flagship sustainable sourcing event that links global manufacturers (all independently audited) with retailers, brands, and designers for ethical supply chain solutions.

• Venue: Olympia London, Hammersmith
• Ticket Price & Options: Register interest (details TBA)
• Key Agenda Details: Industry expert seminars, a full speaker line-up, and the “Source Catwalk” showcasing 100% sustainable garments
• Key Speakers: Geraldine Wharry (Fashion Futurist), Safia Minney MBE (Fashion Declares), Catherine Salvidge (WRAP)
• 5 Highlights:
  1. Connects 3,200+ buyers with manufacturers from 25+ countries
  2. All exhibitors recently audited (Sedex or equivalent)
  3. Covers garment manufacturing, fabrics, packaging, and more
  4. “Field to fashion” approach on display
  5. Direct access to designers, buyers, and sourcing directors

20. Future Energy Wales 2026 (3–4 November 2026)

Future Energy Wales 2026 is Wales’ headline energy event that charts the path to a quadrupled wind capacity, massive new jobs, and net zero, with an emphasis on supply chain and innovation.

• Venue: ICC Wales, Newport
• Ticket Price & Options: Register interest (details TBA)
• Key Agenda Details: Overcoming system barriers (grid, skills, supply chain), on/offshore wind, Welsh Government and Crown Estate engagement
• Key Speakers: Welsh First Minister Eluned Morgan, Peter Giddings (NCC), 90+ experts
• 5 Highlights:
  1. Billions in new investment and thousands of jobs for Wales
  2. RenewableUK Cymru organizes—direct engagement with government
  3. Full-spectrum Welsh energy plan
  4. Support for SME scale-up and supply chain growth
  5. 500+ attendees, high-impact networking

So, whether you’re chasing fresh ideas, new partners, or hands-on solutions, the UK’s sustainability event calendar has something for everyone. Check back for updates as new events are announced and share your own tips or experiences to help others find their perfect fit.

If you’d like to suggest another UK sustainability event for 2026, feel free to contact us here.

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Manuela WillboldOnline Media & PR Strategist

Blogger and Educator by Passion | Senior Online Media & PR Strategist at ClickDo Ltd. | Fascinated to Write Lifestyle Blogs in News & Education I have completed a journalism summer course at the London School of Journalism and manage various blogs.

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