Sustainability conferences in Spain in 2026

Here’s SustainabilityOnline’s guide to the top sustainability conferences and events taking place in Spain over the coming year. This guide will be updated as and when new events are announced – check back regularly for updates. Other events taking place around Europe can be found here.

Event: eMobility Expo World Congress – MOW 2026
Date(s): 10–11 March 2026
Location: Málaga
Website: https://www.emobilityworldcongress.com/

eMobility Expo World Congress – MOW 2026 is an event dedicated to sustainable mobility, showcasing the latest innovations, technologies, and trends in eMobility. The conference will gather industry leaders, policymakers, startups, and decision-makers to explore solutions for climate-neutral transport, smart cities, alternative fuels, and circular economy practices.

Event: Materials for Sustainable Development Conference (MATSUS Spring 2026)
Date(s): 23-27 March 2026
Location: Barcelona
Website: https://www.nanoge.org/MATSUSSpring26/home

MATSUS Spring 2026 will focus on materials science and technology in support of sustainable development. The multisymposium event explores innovations in alternative energy technologies, energy efficiency, and environmentally responsible material usage, balancing current needs with the well-being of future generations.

Event: Global Sustainable Islands Summit (GSIS 2026)
Date(s): 20-22 April 2026
Location: Gran Canaria
Website: https://gsis.islandinnovation.co/

GSIS 2026 will convene island leaders, innovators, and sustainability experts to discuss resilient development and climate adaptation for island communities. Hosted in Gran Canaria, the summit highlights renewable energy, responsible tourism, and innovative sustainability strategies, providing a platform for knowledge exchange, dialogue, and practical collaboration across global island networks.

Event: WindEurope Annual Event (WindEurope 2026)
Date(s): 21-23 April 2026
Location: Madrid
Website: https://windeurope.org/annual2026/

WindEurope 2026, held at IFEMA Madrid, is one of Europe’s largest wind energy events, attracting over 16,000 participants, 500 exhibitors, and 400+ speakers. The conference will feature more than 80 sessions covering onshore and offshore wind, sustainability, market intelligence, and innovation.

Event: Madrid Energy Conference 2026
Date(s): 27-29 April 2026
Location: Madrid
Website: https://madridenergyconference.com/

The Madrid Energy Conference 2026 will bring together energy leaders from Europe and Latin America to discuss critical energy transition solutions and strengthen transatlantic collaboration. The three-day event features expert-led discussions, presentations from policymakers, regulators, industry leaders, and academics, and networking opportunities with global attendees.

Event: Global Water Summit (GWS 2026)
Date(s): 18-20 May 2026
Location: Madrid
Website: https://www.watermeetsmoney.com/

The Global Water Summit 2026, held at the Madrid Marriott Auditorium, is an international forum for the water industry. Bringing together 1,200+ senior executives from 80+ countries, the summit will focus on the water transition, addressing climate adaptation, finance, technology, and sustainability. Over three days, participants engage in plenary sessions, workshops, and networking opportunities, gaining actionable insights from more than 200 speakers.

Event: International Conference on Sustainable and Renewable Energy Engineering (ICSREE 2026)
Date(s): 20-23 May 2026
Location: San Sebastian
Website: https://www.icsree.com/

The 11th International Conference on Sustainable and Renewable Energy Engineering (ICSREE 2026) will convene researchers, engineers, academics and industry professionals to exchange the latest advances in sustainable and renewable energy engineering.

Event: International Conference on Environmental Engineering and Applications (ICEEA 2026)
Date(s): 29-31 May 2026
Location: Barcelona
Website: https://www.iceea.org/

The 16th International Conference on Environmental Engineering and Applications (ICEEA 2026) will bring together researchers, practitioners and policymakers to exchange knowledge on environmental engineering theory, practice and innovation. Building on a well-established international conference series, ICEEA provides a collaborative forum for presenting research findings, experimental results and applied solutions addressing environmental challenges.

Event: IWA World Conference on Anaerobic Digestion: Fueling Sustainability
Date(s): 9-13 June 2026
Location: Valencia
Website: https://www.iwa-network.org/events/19th-iwa-world-conference-on-anaerobic-digestion-fueling-sustainability

The 19th IWA World Conference on Anaerobic Digestion will focus on advances in anaerobic technologies for waste and wastewater valorisation, with an emphasis on sustainability and high-value bioproducts. The conference will convene researchers, practitioners, and industry representatives to discuss technological developments, system integration, and sustainability assessment across the anaerobic digestion value chain. The event is organised with the support of the IWA Anaerobic Digestion Specialist Group and hosted by Universitat de València.

Event: Connecting Hydrogen Europe (CHE 2026)
Date(s): 17-18 June 2026
Location: Madrid
Website: https://www.connectinghydrogeneurope.com/

Connecting Hydrogen Europe 2026 is a major event for the hydrogen industry, focused on accelerating the deployment of scalable hydrogen projects and fostering cross-sector collaboration. The event will gather over 3,000 attendees, 100+ expert speakers, and 50+ exhibitors, offering strategic summits, networking sessions, and opportunities to showcase practical solutions driving Europe’s hydrogen economy forward.

Event: European Biofuels & SAF Summit (EBSS 2026)
Date(s): 17-18 June 2026
Location: Madrid
Website: https://www.biofuelssafsummit.com/

EBSS 2026 will bring together senior leaders across policy, aviation, shipping, logistics, finance, and fuel production to advance sustainable fuels and SAF at scale. Hosted in Madrid, the summit highlights Southern Europe’s role in Europe’s green transition, focusing on investment, deployment, and market adoption of biofuels and SAF while leveraging regional feedstock, renewable power, and strategic infrastructure for global competitiveness.

Event: International Conference on Environmental Science, Sustainability & Global Innovation (EnviWorld 2026)
Date(s): 18-20 June 2026
Location: Barcelona
Website: https://environmentalscienceconference.com/

EnviWorld 2026 is a hybrid conference that will bring together environmental researchers, sustainability experts, policymakers, and industry professionals to explore the latest advances in environmental science and sustainable innovation. Featuring the theme Next-Generation Environmental Science: From Research to Real-World Impact, the event features keynote lectures, interactive forums, and networking sessions to foster collaboration, knowledge exchange, and actionable strategies for addressing global environmental challenges.

Event: International Summit on Renewable, Sustainable & Green Energy (ReSuGreen 2026)
Date(s): 24-26 September 2026
Location: Barcelona
Website: https://resugreen.org/

ReSuGreen 2026 will welcome researchers, scientists, engineers, and industry professionals to explore the latest advancements in renewable, sustainable, and green energy. The summit fosters collaboration, knowledge exchange, and discussion of technological innovations and challenges across the energy sector, offering a platform for global networking and interdisciplinary dialogue.

Event: Sustainability in Packaging Europe 2026
Date(s): 6-8 October 2026
Location: Barcelona
Website: https://www.sustainability-in-packaging.com/sustainability-in-packaging-europe

Sustainability in Packaging Europe 2026 is aimed at stakeholders in the packaging industry to explore sustainable solutions and circular economy practices. The three-day conference will provide a comprehensive view of key topics impacting packaging sustainability, featuring practical case studies, industry insights, and opportunities for knowledge exchange.

Event: Smart City Expo World Congress (SCEWC 2026)
Date(s): 3-5 November 2026
Location: Barcelona
Website: https://www.smartcityexpo.com/

SCEWC 2026 will focus on urban innovation, bringing together cities, industry leaders, policymakers, and innovators to explore solutions for smarter, more sustainable urban environments. The congress showcases market-ready technologies and strategies across mobility, energy, governance, and citizen engagement, fostering knowledge exchange, networking, and collaboration.

Event: Tomorrow.Mobility World Congress (TMWC 2026)
Date(s): 3–5 November 2026
Location: Barcelona
Website: https://www.tomorrowmobility.com/

Tomorrow.Mobility World Congress 2026 (pictured) is focused on advancing sustainable urban mobility. It will bring together urban planners, innovators, government leaders, researchers, entrepreneurs, and industry experts to exchange knowledge, showcase solutions, and promote greener, safer, and more efficient urban transportation systems.

If there are any other events you think should be on our list, don’t hesitate to get in touch with us here.