Tewke, the London-based company redefining energy optimisation and home automation, today announced the close of its second funding round of £1.5m.

The round includes participation from leading UK consumer venture capital firm JamJar Investments, emerging impact fund Cur8 Capital, and specialist VCs Energy Mix Ventures and Project Ventures. It also attracted notable angel investors, including Vlad Yatsenko, co-founder and CTO of Revolut.

This investment follows high praise for Tewke’s flagship product, Tap. In a recent review, leading UK tech publication T3 Magazine described Tap as “quite probably the smartest light switch ever made,” adding that it “could become the Apple of smart home control.”

Co-founded in 2020 by serial entrepreneur Piers Daniell and Rowan Dixon (formerly of Microsoft), Tewke created Tap to “make smart simple”. Designed and engineered in the UK, Tap requires no rewiring and works in homes without a neutral wire, making it retrofittable in over 90% of UK housing stock. It offers an elegant and affordable alternative to complex, installer-only smart home systems.

But Tap goes far beyond lighting. It acts as a dynamic energy guide, helping households shift electricity use in line with time-of-day tariffs to reduce both costs and carbon emissions. It is the first building block in Tewke’s vision for optimal home energy efficiency, powered by contextual, AI-led intelligence.

Over the past 12-months, Tewke has achieved B Corp certification, joined the Made in Britain collective, and received a Red Dot Award for Design Concept. These milestones reflect a deep commitment to sustainability and innovation across the business, from hardware design and local manufacturing through to energy saving, supply chain practices, and material sourcing.

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. This latest capital injection strengthens Tewke’s go-to-market strategy and expands its engineering team, enabling the development of neuro-symbolic AI systems to further improve residential energy performance.

Piers Daniell, CEO of Tewke, commented:

“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.”

Rowan Dixon, Co-founder, added:

“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.”

Tewke develops all core technology in-house, from patented hardware and firmware to its custom operating system, Tewke OS. Tap debuted at CES 2025, with market feedback confirming its appeal across energy-conscious consumers, professional installers, and major distribution partners.

As Tewke scales its go-to-market operations in the UK and internationally, the company has initiated a new funding round to accelerate growth and deepen its AI and energy optimisation capabilities. Tewke’s growth is further supported by non-equity funding from Innovate UK.