Far from being a futuristic promise, the Internet of Things (IoT) and smart buildings are already delivering operational savings, increasing asset value, and enhancing occupant experience. Sensors, automation platforms, and predictive management systems enable real-time adjustments to lighting, climate control, and air quality, with measurable outcomes — from 80% reductions in lighting consumption to tens of thousands of pounds saved in Heating, Ventilation, and Air-Conditioning (HVAC) through Artificial Intelligence (AI).

What’s most compelling is that this transformation isn’t limited to new builds: retrofit projects like Keppel Bay Tower in Singapore show that achieving net-zero energy use is feasible even in existing structures, with reasonable investment.

However, there are still challenges: interoperability with legacy systems, data privacy, and cybersecurity remain significant barriers. Still, the message is clear: IoT is not merely a tool for efficiency, but a catalyst for rethinking how buildings are designed, operated, and experienced. For those working in energy retrofitting, this integrated approach —combining technology, sustainability, and user experience— outlines an interesting path for Europe to follow.