In June 2011, BC Hydro commenced implementation of its Smart Metering Program, which involved converting every residential property in BC from legacy metering to wireless technology smart meters. This Smart Metering Program involves replacing existing electrical meters that are now becoming obsolete, with a comprehensive wireless smart metering system. As of June 30, 2015, an estimated 1.921 million smart meters have been installed, leaving 4,200 smart meter exchanges remaining.