London Climate Action Week 2026
Europe's largest city-wide climate gathering.
London Climate Action Week (LCAW) ran from 20 to 28 June 2026 — nine days, more than 700 events and tens of thousands of participants, now in its eighth year and comfortably Europe's largest city-wide climate gathering. It is not a single conference but a brand under which hundreds of organisations stage their own events, creating a vast, semi-improvised festival of panels, launches, dinners and demonstrations across London.
What's on the agenda
The 2026 conversations clustered around clean-energy competitiveness, electrification, artificial intelligence, climate finance, energy efficiency — and, tellingly, the fight against climate disinformation. For one week each summer, London does for the climate economy what Cannes does for cinema: it becomes the place where an entire industry gathers to take its own temperature.
The London BGTC Society's view
London has no oilfields and an expensive, creaking grid; what it has is capital, convening power and a talent for turning ideas into institutions — and LCAW is the city trading on exactly those assets. For our members, the week is the anchor of the summer calendar and the clearest annual signal of where policy, capital and technology are converging. Its single largest event, the Energy Tech Summit, opens the week — we cover it separately.
The centre of gravity has moved from ambition to delivery, and from policy to capital.
Frequently asked questions
When is London Climate Action Week 2026?
20–28 June 2026, across venues throughout London.
Is LCAW one event or many?
Many. LCAW is an umbrella under which hundreds of independent organisations host their own panels, launches and gatherings — several hundred events over nine days.
How do I attend?
Individual events have their own organisers, tickets and access rules. Browse the official LCAW programme to find and book specific sessions.
This is an independent informational guide compiled by the London BGTC Society for its members; we are not affiliated with, nor the organiser of, this event. All booking and official information lives on the organiser's website, linked above. Dates and programmes are subject to change — always confirm on the official site before making plans.
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