SIWI at London Climate Action Week 2026

London Climate Action Week (LCAW) is one of the world’s largest independent climate events, bringing together policymakers, businesses, researchers, civil society organizations, and communities to advance climate action between COPs. Taking place across London from 20–28 June, the Week provides a platform for dialogue, collaboration, and practical action on some of the most pressing climate challenges.

As climate change increasingly affects societies through water, discussions on resilience, adaptation, infrastructure, finance, and sustainable development depend on how water is managed. During London Climate Action Week 2026, SIWI will contribute expertise and practical perspectives on water governance, resilience, and implementation. Through partnerships and dialogue, we will help strengthen the connection between climate and water agendas and explore how investment, infrastructure, and cooperation can support more resilient societies and economies.

Our engagements

Bridging the Gap: Financing Global Water Resilience
22 June

Despite growing recognition of water’s role in climate resilience, economic development, and adaptation, investment continues to fall far short of what is needed. This roundtable brings together policymakers, development finance institutions, investors, and water experts to explore one of the key challenges facing the sector: how to connect available capital with investable water opportunities.

Discussions will examine the governance, policy, and financing conditions that shape investment decisions, including risk, regulatory frameworks, revenue models, and approaches to scaling successful financing mechanisms. The session will also explore how water can be better integrated into climate finance and investment strategies ahead of major global water and climate processes.

SIWI’s Thomas Rebermark will contribute perspectives on the links between water governance, climate policy, and investment, drawing on SIWI’s work at the intersection of science, policy, and practice.

SIWI–Arup Partnership Interview
24 June

Thomas Rebermark, Director of Swedish Water House at SIWI, will join Arup’s Global Water Leader, Mark Fletcher, for a filmed conversation exploring the evolution of the SIWI-Arup partnership and its role in advancing water and climate action. Topics include the Water for Climate Pavilion, COP31, joint delivery ambitions, the Future Leaders Programme, and how partnerships can help connect policy, practice, and implementation. The resulting content will be shared across SIWI and Arup channels.

The Future of Water Infrastructure is Natural
24 June

This invite-only Do Tank brings together approximately 30 participants from the water, climate, nature, finance, and policy communities to explore how ecological restoration and nature-based approaches can be scaled from individual projects into infrastructure systems. Through practical examples and collaborative discussion, participants will examine how natural systems can strengthen water security and climate resilience.

Sustainable Infrastructure Forum
25 June

Infrastructure decisions made today will shape resilience for decades to come. The Sustainable Infrastructure Forum brings together leaders from across infrastructure, finance, technology, and sustainability to explore how infrastructure systems can better respond to climate risks while supporting long-term development goals. Discussions will address climate resilience, digital technologies, systems-level planning, collaborative innovation, and practical pathways for delivering sustainable infrastructure at scale. Thomas Rebermark contributing to the discussions onsite.

Why this matters

Climate adaptation, resilient infrastructure, and sustainable development all depend on how water is managed. Yet water remains underrepresented in many climate and investment discussions. Through its participation at London Climate Action Week, SIWI is helping bring water perspectives into conversations on finance, infrastructure, resilience, and implementation—areas that will be critical to delivering meaningful climate action in the years ahead.