Hybrid Car Options

Is there a "hybrid heating systems, for example oil and gas and solar energy?

As technology hybrid car there, I wondered about the availability of hybrid systems for home heating. I think this could be a viable option for households in areas with cold winters and spring rains and / or fall seasons.

There is a system called dual fuel system. This is a heatpump and gas unit in one. Once the temperature is too cold for the side of the heat pump, the gas kicks in.

Getting 100mpg With Your Hybrid Car