# tem

Energy AI · Nine Elms · Series B

tem builds AI-native infrastructure for energy transactions, aiming to be the 'Stripe of energy' by automating how businesses buy, sell and manage electricity while stripping out hidden fees and inefficiencies in wholesale markets. Its Rosso platform automates energy transactions, and its RED neo-utility gives businesses and brokers a modern interface to contract and manage energy. Founded in 2021 and based in London, tem facilitated over 2TWh of transactions for 2,600+ UK customers in 2025 and exceeded $300M in annualised gross transaction value. It raised a $75M Series B in February 2026 led by Lightspeed, bringing total funding to about $94M, with backers including Atomico, AlbionVC, Hitachi Ventures and Voyager Ventures.

- Website: https://tem.energy
- Careers: https://jobs.ashbyhq.com/tem
- Sector: [Climate & Energy AI](https://aistartupslist.co.uk/sector/climate-ai.md)

## Facts

- Funding stage: Series B
- Total raised: $94M
- Founded: 2021
- Headquarters: London, UK
- Team size: 51-200

## Notable investors

Lightspeed Venture Partners, Atomico, AlbionVC, Hitachi Ventures, Voyager Ventures, Revent

## Open UK & remote roles

- [Staff Full Stack Engineer](https://aistartupslist.co.uk/company/tem/staff-full-stack-engineer-x96fwd.md) · United Kingdom (posted 2025-12-10)
- [Technical Lead](https://aistartupslist.co.uk/company/tem/technical-lead-neti7f.md) · United Kingdom (posted 2025-12-10)
- [Baseload Originator](https://aistartupslist.co.uk/company/tem/baseload-originator-1smu1f.md) · United Kingdom (posted 2026-05-26)
- [Fractional CFO (6 month contract)](https://aistartupslist.co.uk/company/tem/fractional-cfo-6-month-contract-1r4xuj.md) · United Kingdom (posted 2026-07-08)
- [Partner Account Manager](https://aistartupslist.co.uk/company/tem/partner-account-manager-1vqd4r.md) · United Kingdom (posted 2026-06-15)
- [Senior Staff Full Stack Engineer](https://aistartupslist.co.uk/company/tem/senior-staff-full-stack-engineer-1l28nz.md) · United Kingdom (posted 2026-07-16)
- [Growth Lead - Sell Side](https://aistartupslist.co.uk/company/tem/growth-lead-sell-side-1s4q0r.md) · United Kingdom (posted 2026-07-31)
- [Head of FP&A](https://aistartupslist.co.uk/company/tem/head-of-fp-and-a-n8zczt.md) · United Kingdom (posted 2026-08-12)
- [Senior Automation Specialist](https://aistartupslist.co.uk/company/tem/senior-automation-specialist-epzmr8.md) · Europe (posted 2026-08-17)
- [Customer Support Manager](https://aistartupslist.co.uk/company/tem/customer-support-manager-192i2d.md) · United Kingdom (posted 2026-08-17)
- [Brand & Creative Design Lead](https://aistartupslist.co.uk/company/tem/brand-and-creative-design-lead-kaqbnp.md) · United Kingdom (posted 2026-08-25)
- [Staff QA Automation Engineer](https://aistartupslist.co.uk/company/tem/staff-qa-automation-engineer-x15vu8.md) · United Kingdom (posted 2026-08-27)
- [Senior Data Analyst](https://aistartupslist.co.uk/company/tem/senior-data-analyst-i7k6si.md) · United Kingdom (posted 2026-08-28)