Cambridge Startup Unveils World’s First Smart Window Film

The new invention promises to revolutionise energy use in homes by adjusting light and heat transmission based on weather conditions.

2025-07-05 14:22   |   By Amelia Green

A tech startup based in Cambridge has unveiled what it claims is the world’s first smart window film capable of autonomously adjusting to light and temperature conditions. The innovation could redefine energy efficiency for homes and offices, particularly in older buildings.

The film, developed by SoluView Ltd, is applied directly onto existing glass surfaces. Using embedded nano-sensors and a thin liquid crystal layer, it modulates transparency and reflectivity based on real-time external weather and internal room temperature.

Unlike traditional smart glass that requires electrical input or manual controls, SoluView’s film operates passively. 'It uses photovoltaic nanotechnology to power itself, responding to sunlight intensity and ambient temperature without human intervention,' explained CEO Marcus Lin.

The technology can reduce energy consumption by up to 30% in buildings that rely heavily on heating or air conditioning. By adjusting the film’s properties, it helps retain warmth during winter and block solar heat in summer—without sacrificing natural light.

Initial installations are being trialled in Cambridge schools and co-working hubs, where early results suggest significant drops in both energy bills and glare complaints. The startup hopes to expand its market to heritage buildings that cannot retrofit modern glazing systems.

The film has a lifespan of around 10 years and is fully recyclable. Its thin, flexible construction allows it to be installed quickly without specialist equipment, making it ideal for cost-conscious property owners and facilities managers.

SoluView’s breakthrough has drawn interest from property developers in Europe and the Middle East, particularly in countries with extreme seasonal temperature shifts. A partnership with a large UK retailer is also in negotiation for pilot trials across its high street stores.

As energy costs continue to rise and climate goals tighten, solutions like this smart film may become indispensable. Analysts view the Cambridge startup’s invention as an accessible stepping stone toward greener, smarter buildings—without the high cost of major renovations.