Climate/Fastest growing

Tem

AI-powered platform that lets businesses buy electricity straight from generators without wholesale markups.

Why it's here

Raised an oversubscribed $75M Series B led by Lightspeed and grew UK headcount 75% in 2026, with 7,000+ UK sites transacting.

Focus: Energy transaction infrastructure
Founded: 2021
Latest round: Series B, $75M led by Lightspeed, 2026
Staff (Companies House accounts): 42, average over the period to 31 Oct 2025source: find-and-update.company-information.service.gov.uk
London office: The Engine Room, 18 The Power Station, Battersea Power Station, Circus Road South, London, Wandsworth SW11 8BZsource: tem.energy
London presence: HQsource: techcrunch.com
Investors: Lightspeed Venture Partners (lead), AlbionVC, Atomico, Hitachi Ventures, Revent, Schroders Capital, Voyager Venturessource: itbrief.co.uk
Area: Elsewhere in London
Nearest station: Battersea Power Station, 288 m
Companies House: TEM-ENERGY LIMITED (13499591, active)Incorporated 7 Jul 2021 · SIC 82990
Visas: Licensed visa sponsor, listed as TEM-ENERGY LIMITEDsource: gov.uk
Elsewhere: LinkedIn ↗

For Tem