London-based Tewke, a company working in energy optimisation and home automation, has raised £1.5 million in its second funding round.
The round saw participation from JamJar Investments, Cur8 Capital, Energy Mix Ventures, and Project Ventures. Angel investor Vlad Yatsenko, co-founder and CTO of Revolut, also participated.
Founded in 2020 by Piers Daniell and Rowan Dixon, Tewke develops smart home technology aimed at simplifying how households manage energy. Its flagship product, Tap, is designed and engineered in the UK and does not require rewiring.
Importantly, Tap works in homes without a neutral wire. As a result, it is compatible with more than 90% of UK housing stock. The company positions the product as an alternative to installer-led smart home systems that often require complex setup.
Beyond basic lighting functions, Tap supports household energy optimisation. It helps users shift electricity consumption based on time-of-day tariffs, which can lower energy costs and reduce emissions.
This approach aligns with Tewke’s broader focus on improving residential energy efficiency using contextual, AI-driven intelligence. The company builds its core technology in-house, including patented hardware, firmware, and its proprietary operating system, Tewke OS.
In 2025, Tewke introduced TewkeAI in collaboration with Google. The contextual AI framework uses data from Tap’s nine onboard sensors to analyse behaviour, movement, air quality, and temperature patterns inside the home.
According to the company, this data-driven approach enables more responsive energy management while maintaining ease of use for households.
The newly raised capital will be used to support go-to-market execution and expand Tewke’s engineering team. This includes work on neuro-symbolic AI systems designed to improve residential energy performance.
In addition to equity funding, the company also receives non-dilutive support from Innovate UK, which continues to back its technology development efforts.
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