Tewke, a home energy optimisation and automation startup, has raised £1.5 million in funding from JamJar Investments, Cur8 Capital, Energy Mix Ventures, Project Ventures and angels including Vlad Yatsenko, co-founder and CTO of Revolut. The investment strengthens its go-to-market strategy and expands its engineering team to support development of its AI systems.
Founded in 2020, Tewke created its flagship product, Tap, to make smart home control simpler. The device requires no rewiring and works in homes without a neutral wire, making it retrofittable in over 90% of UK housing stock, while providing an alternative to installer-only systems. Beyond lighting control, Tap acts as an energy guide, helping households shift electricity use in line with time-of-day tariffs to reduce costs and carbon emissions.
Over the past 12 months, the business achieved B Corp certification, joined the Made in Britain collective, and received a Red Dot Award for Design Concept. At Slush 2025, Tewke announced TewkeAI alongside Google, a contextual AI framework that leverages data from Tap’s nine onboard sensors to understand behaviour, movement, air quality, and temperature patterns inside the home.
All core technology is developed in-house, including patented hardware, firmware, and its operating system. Tap debuted at CES 2025, with feedback confirming demand from energy-conscious consumers, installers, and distribution partners.
Having the backing of some of the UK’s most respected investors, including JamJar and a founder of one of Britain’s most successful tech companies, is a powerful validation of our team, our mission, and the product we’ve built. We’re not just optimising energy; we’re creating a more intelligent, sustainable and user-centred way of living.
Building next-generation electronics and AI in the UK has been a monumental technical challenge. Seeing people install Tap in minutes and start saving energy immediately is a powerful reward. This funding enables us to scale what we’ve proven works and double down on engineering excellence.
