The service's creators hope it will encourage people to limit their power use cutting their electric and gas bills and lowering their carbon footprint.
Pilgrim Beart, founder and chief executive of AlertMe, which has partnered with Google, said more than a quarter of all energy consumption happens in UK homes.
She said: "Many consumers feel they can't protect themselves from rising energy costs or do anything to stop climate change.
"Now AlertMe Energy gives consumers the power to monitor, control, and reduce the energy they use, saving money and reducing their carbon footprint."
According to the Citizens Advice Bureau, households may be able to reduce their energy bills simply by switching providers.
The service urged consumers to compare energy prices online to see if they can make savings in this way.
Click here to run an energy price comparison, and see if you could be paying less for your gas and electricity.