The document describes a pneumatic cylinder power economiser that aims to reduce noise and wasted compressed air from pneumatic cylinders. It works by reusing exhaust air from the cylinder's forward stroke that is normally wasted into the atmosphere. Testing showed the economiser achieved a 49.16% saving in compressed air usage and a 47.36% reduction in power usage. Given the millions of pneumatic cylinders used worldwide, rolling out this system could result in enormous global energy savings and help mitigate climate change.