Tether

tetherev.io ↗ ·Barcelona ·Pre-seed

Tether is a Barcelona-based climate-tech startup whose AI platform predicts and coordinates the charging behaviour of millions of private electric vehicles, aggregating that flexibility into a virtual power plant that bids into grid balancing markets and enables smart charging and V2G. It sells via a SaaS/revenue-share model to EV OEMs and charge point operators (partners cited include Audi and Zeekr), sharing income earned from the energy markets. Founded in 2023 at Norrsken Barcelona (originally named Luma) and a Techstars '23 company, it raised a ~€1.3-1.5M pre-seed in June 2025.

Founded

2023

Founders

Total funds raised

€1.3M

SectorsEnergy & Climate, Cleantech, Electric Vehicles, Smart Grid, AI & Data, Mobility Start-up MapEnergy & Climate › Batteries & EV charging

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Founders

Luis Medina Rivas

Co-founder & CEO

Martim Perestrelo

Co-founder & COO

Global models 5

Kaluza

United Kingdom · www.kaluza.com ↗

Its software platform aggregates EV charging and home energy devices into grid flexibility and smart charging, sold to OEMs and energy retailers, including V2G programmes.

$300M+Comparable

The Mobility House

Germany · www.mobilityhouse.com ↗

Pools EV batteries through smart-charging and V2G software and trades that flexibility on energy markets, working with car makers such as Renault and Mercedes, like Tether.

$100M+Comparable

ev.energy

United Kingdom · www.ev.energy ↗

A software-only EV smart-charging platform that connects to vehicles and chargers and turns home charging into a virtual power plant for utilities and grid programmes.

$100M+Comparable

WeaveGrid

United States · www.weavegrid.com ↗

Connects to EVs through OEM integrations (e.g. BMW, Ford) and orchestrates their charging as flexible grid load, earning from utility and grid programmes.

$60M+Comparable

Jedlix

Netherlands · www.jedlix.com ↗

Its smart-charging platform links to cars and chargers through OEM partnerships and sells the pooled flexibility into balancing markets, sharing the revenue with drivers and partners, which is almost the same model as Tether.

$20M+Comparable

In the same niche 27 others

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Notes: Most funded first

Investors 8

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Draper B1

draperb1.com

Led Pre-seed 2025 Spain

Kfund

www.kfund.vc

Led Pre-seed 2025 Spain

COREangels

www.coreangels.com/angel-groups/climate

Pre-seed 2025 Portugal

www.eiturbanmobility.eu

Investor Spain

Techstars

www.techstars.com

Investor United States

Zero4Climate

Pre-seed 2025 Spain

Funding rounds 1

Date	Round	Amount	Lead
2025-06-19	Pre-seed	€1.3M	Draper B1, K Fund +4 more

News 7

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Published	Article
2026-10-01	Cuatro startups seleccionadas en el 15º Fondo de Emprendedores de Fundación Repsol ↗ Emprendedores 2026-10-01
2026-03-23	Tether: Turning EVs into batteries ↗ Unicorner 2026-03-23
2025-07-20	Tecnología para evitar otro apagón: convertir los coches eléctricos en la batería más grande del mundo es la clave ↗ El Español / Invertia Disruptores 2025-07-20
2025-07-10	What's in a Name: How a parked EV, a cable, and a late-night idea sparked this Spanish startup's name ↗ Silicon Canals 2025-07-10
2025-06-20	EIT Urban Mobility supported companies win big at European Startup Prize for Mobility ↗ EIT Urban Mobility 2025-06-20
2025-06-19	Spanish clean energy startup Tether secures €1.3 million to turn EVs into the 'world's largest connected battery' ↗ EU-Startups 2025-06-19
2024-01-25	Four startups join MobilityXlab to collaborate and innovate with automotive industry leaders ↗ Lindholmen Science Park / MobilityXlab (press release) 2024-01-25