Micro combined heat and power (micro CHP) is a technology that generates heat and electricity at the same time. The main output of a micro-CHP system is heat, with some electricity generation.
Many homes can easily replace a conventional gas boiler with a micro CHP boiler instead. While micro CHP boilers require gas or liquified petroleum gas (LPG), they are still considered a low carbon technology because it can be more efficient than just burning a fossil fuel for heat and getting electricity from the grid.