British Gas have recently launched the Hive which is a connected thermostat that alerts home owners if they have left the heating on at home.  It also lets customers use an App to automatically switch their heating on as soon as Hive is aware the home owner is on their way home.  The leaves the customer in full control of their heating.  Over 75,000 customers are now using the Hive and it is aiding customers manage their energy costs.  Hive is reducing annual energy costs by around £150.00  British Gas are fitting Hive free of charge saving clients a further £199.00