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Tickets for THE HEAT will never be as cheap as today. Click the links below to join us on September 19 2025. All we ask is that you’re working in or engaged in climate-tech — in any role, in any geography. THE HEAT will be a gathering of peers.

You’ll be in great company: In 2024, we registered 600+ founders of ambitious climate-tech companies such as Thaleron, Notpla, one.five, Carbo Culture, Regrow Ag, Soil Capital, Olio, Extend Robotics, Brill Power, Dynamic Thermal Systems, Hoxton Farms, Proxima Fusion, Better Dairy, Emitwise, Groundwork BioAg, Ecologi, Space Solar, Spark eFuels, Cambrium Bio, Magical Mushroom Company and Formo; leaders at First Light Fusion, Tokamak Energy, Jacobs, Diamond Light Source, IDEO, Materials Nexus and the Tony Blair Institute for Global Change; investors from Pale Blue Dot, Creandum, Planet A, Village Capital, Norrsken VC, Zero Carbon Capital, Hedosophia, blisce, Manta Ray, Extantia, Satgana, Third Derivative, Systemiq Capital, Kompas, 10xFounders, World Fund, Astanor, Zouk Capital, 2150, Eka, Statkraft Ventures and Contrarian; journalists from the the Financial Times, Bloomberg, WIRED, GQ, The Economist and Carbon Commentary; ecosystem partners such as Innovate UK, EIT InnoEnergy, the UK’s Advanced Research and Invention Agency (ARIA), Nesta, ClimateImpact, Urban Impact, the Royal Academy of Engineering and the European Innovation Council; company builders such as Carbon 13, Deep Science Ventures, Oxford Science Enterprises and Sting; corporates such as Brookfield, Amazon, Barclays and HSBC; governmental and research organisations such as the European Space Agency, the UK Atomic Energy Authority, UK National Quantum Computing Centre, ISIS Neutron and Muon Source, the Faraday Institution, and EPFL; and many more.

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All Access

 £̶2̶5̶0̶ ̶+̶ ̶V̶A̶T̶
Super Early-Bird rate
£175
+ VAT

Until December 31 2024

Full Festival access

All speakers + workshops

All unconference sessions

All product demonstrations

Tours of Harwell Campus

Networking activities

Evening party

Festival magazine

Free train-station shuttles

Vegetarian lunch, snacks, tea/coffee, light dinner

VIP networking breakfast

VIP lunch reception

Entry in the festival handbook

VIP

£̶3̶5̶0̶ ̶+̶ ̶V̶A̶T̶
Super Early-Bird rate
£265 
+ VAT

Until December 31 2024

Full Festival access

All speakers + workshops

All unconference sessions

All product demonstrations

Tours of Harwell Campus

Networking activities

Evening party

Festival magazine

Free train-station shuttles

Vegetarian lunch, snacks, tea/coffee, light dinner

VIP networking breakfast

VIP lunch reception

Entry in the festival handbook

5 Ticket Package

Team

£̶9̶9̶5̶ ̶+̶ ̶V̶A̶T̶
Super Early-Bird rate
£795 
+ VAT

Includes 5 All-Access tickets

5 x Full Festival access

All speakers + workshops

All unconference sessions

All product demonstrations

Tours of Harwell Campus

Networking activities

Evening party

Festival magazine

Free train-station shuttles

Vegetarian lunch, snacks, tea/coffee, light dinner

VIP networking breakfast

VIP lunch reception

Entry in the festival handbook

Proof of Age Required

Under-25

£̶1̶5̶0̶ ̶+̶ ̶V̶A̶T̶
Super Early-Bird rate
£100 + VAT

Until December 31 2024

Full Festival access

All speakers + workshops

All unconference sessions

All product demonstrations

Tours of Harwell Campus

Networking activities

Evening party

Festival magazine

Free train-station shuttles

Vegetarian lunch, snacks, tea/coffee, light dinner

VIP networking breakfast

VIP lunch reception

Entry in the festival handbook

All ticket fees are subject to UK VAT at 20%, charged by the UK government and which does not benefit the organisers.

All tickets are subject to application and approval by the VOYAGERS team. You need to be working in or otherwise engaged in climate-tech in order to obtain a ticket. Tickets are non-refundable, but until September 12 2025 can be transferred to somebody else who works in climate-tech, subject to our approval (you will need to contact us at mariana@voyagers.io with details of the intended new ticket-holder).

The Heat is brought to you by VOYAGERS.io

Under-23 (Proof of Age Required)

Apply For Your Ticket

Team Festival Pass (5 tickets)

Apply For Your Ticket

VIP Festival Pass

Apply For Your Ticket

All Access Festival Pass

Apply For Your Ticket

The Heat is brought to you by VOYAGERS.io