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.
Find out more

22 June | 15:30 to 17:00 
Windsor Room, Taj St. James’ Court
The closed-door roundtable will explore solutions across public health systems, living and working conditions, financing and affordability, and governance and delivery. It will also consider how platforms such as the Climate Resilience Analytics and Visualisation Intelligence System (CRAVIS) and the Global Heat Health Information Network can strengthen climate intelligence, coordination and decision-making. Through cross-regional exchange, particularly between South Asia and the United Kingdom, the session will highlight practical case studies, scalable interventions and opportunities for collaboration.
Find out more

23 June | 10:00 to 12:00
BCG Offices
Convened by GlobalABC with support from the COP30 and COP31 Presidencies, as well as 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 Antalya.

23 June | 12:30 to 17:00
Guildhall
Organized by Bloomberg Philanthropies in partnership with C40 Cities, the Global Covenant of Mayors for Climate and Energy, Breathe Cities, the Under2 Coalition, and otherss the convening will bring together mayors and governors from around the world to strengthen collaboration among local, national, and international leaders and highlight the increasingly influential role cities and states are playing in advancing global climate and energy priorities.
Find out more

23 June | 15:15 to 17:15
Political leaders and CEOs will discuss how to build clean, electrified economies and advance the global transition away from fossil fuels at the first Global Energy Transition and Electrification Summit. Against a backdrop of geopolitical instability and energy price volatility, the Summit will provide an opportunity to discuss the outcomes of the Santa Marta Conference on Transitioning Away from Fossil Fuels and take stock of progress on the COP30 Presidency roadmap. As the COP31 Presidency puts electrification front and centre, the Summit will bring together governments and business to accelerate the policies, investments and international support needed to electrify economies, strengthen energy security, and deliver an equitable energy transition.
Find out more

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.
Find out more

25 June | 08:30 to 10:30
Arup Offices
Urban heat is becoming a measurable risk to health and economic performance. This 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.
Find out more

25 June | 11:00 to 12:00
Arup Offices
Beat the Heat, the urban heat resilience drive launched at COP30 by the Brazilian Presidency and the UNEP Cool Coalition, brings together more than 250 cities and over 100 partners to protect people from rising heat. This closed-door meeting convenes key partners during London Climate Action Week to share progress, align on priorities and look ahead to the Global Cooling Pledge Assembly in Singapore.
Find out more

Event details
20 Jun 2026 - 28 Jun 2026
09:00 - 18:00
UTC+1
E3G (Third Generation Environmentalism