Energy saving – is it time to get back to basics

ABB’s Steve Hughes discovers that the energy saving benefits of variable speed drives are still not widely understood. I recently had the privilege of presenting to an audience with a vested interest in energy efficiency at the EMEX show, held in November at London’s ExCel, where I was extolling the virtues of digital energy. More about digital energy in a later column. What struck me were the questions from the audience which were truly back…