Buildings consume 38% of all energy, but there are many opportunities to improve their efficiency
Clearly there is an opportunity for improvement, and there are many governments—national and local--taking action to improve the energy efficiency of buildings. And there is abundant low-hanging fruit. Heating, cooling and lighting together account for more than two thirds of the energy consumed in commercial buildings, and the equipment and control systems that manage these offer some of the greatest opportunities for savings. Two success stories:
London Heathrow Airport – HVAC energy use in the waiting area cut by 77-89% by a control system that varies output based on occupancy, air quality and ambient temperature.
University of Texas, Austin – a boiler retrofit with drives to replace dampers for airflow control saves 746,000 kWh of electricity every year. Translation: half a million dollars per year.
So what’s not to love about efficiency? Barriers to wider implementation include: