London Climate Action Week is the largest independent climate gathering in Europe and a key moment between the UN Climate Change Conferences, where the global climate action agenda comes alive in cities and communities, and the international community builds the cooperation needed to turn commitments into delivery. In 2026, it convened under the theme "Climate Cooperation in a Fractured World". Across the week, the UNEP Cool Coalition will advance practical action on sustainable cooling, urban heat adaptation and demand-side flexibility. Through forums, roundtables and partner engagements, the Coalition will show how sustainable cooling and heat resilience can be embedded in resilient cities, efficient buildings, flexible energy systems and the finance and delivery models that bring them to scale on the road to COP31.

Events

22 June | 09:00 to 17:00
The Minster Building
The Forum will spotlight frontier clean-energy innovations, new delivery models and systems-level solutions that are accelerating energy transitions while supporting prosperity, resilience and climate action, particularly in emerging economies.

22 to 23 June 
EBRD Headquarters
Marking ten years of EBRD Green Cities, the meeting will bring together mayors, private-sector leaders, technical experts, academics and youth organisations to examine how cities can electrify transport and buildings, deliver resilient housing, modernise infrastructure and strengthen their response to rising heat.

23 June | 10:00 to 12:00
BCG Offices
Convened with the Climate High-Level Champions, this roundtable will advance the Plan to Accelerate Solutions for near-zero emission and resilient buildings, strengthen coordination among partners and identify delivery priorities and milestones ahead of COP31.

23 June | 10:00 to 13:00
Foster + Partners
This executive-level gathering will bring together business leaders, investors and city representatives to explore the collaboration models, financing structures and decision-making frameworks needed to deliver low-carbon, resilient and future-ready cities.

23 June | 14:30 to 17:00
UNEP, IRENA and partners will launch a new global initiative to scale demand-side flexibility across buildings, industry, cooling and electric mobility, helping to strengthen energy security, support renewables and lower costs by shifting electricity use to when power is cleaner and cheaper.

23 June | 14:30 to 17:00
Convened with the Global Grids Catalyst, this technical session will advance the demand-side flexibility agenda, bringing together partners to align on grid integration, system planning and the practical steps needed to scale flexible electricity demand.

24 June | 10:00 to 12:00 
The Sovereigns Room, RAF Club
Convened by the Government of Iceland and Sustainable Energy for All (SEforALL), this event will examine how strategic partnerships and innovation can unlock financing and accelerate delivery across integrated low-carbon energy systems, clean cooking, sustainable cooling and energy efficiency. A dedicated cooling spotlight will showcase partnership-driven solutions and financing models, highlighting how national and subnational governments are closing heat-resilience and sustainable cooling gaps.

25 June | 09:00 to 14:00
Embassy of Sweden
The first Building Decarbonisation Forum will examine the strategic policy pathways, market enablers and international practices needed to accelerate clean heating and building decarbonisation in the United Kingdom and internationally.

25 June | 08:30 to 10:30
Arup Offices
Urban heat is becoming a measurable risk to health and economic performance. This closed-door event will explore how targeted interventions across buildings and cities can reduce health risks, improve productivity and increase place value, drawing on new evidence on heat risk and adaptation in the urban built environment.

Event details
20 Jun 2026 - 28 Jun 2026
09:00 - 18:00
UTC+1