- With solar systems, during the winter months, a boiler or immersion heater provides extra heat for water. Sunlight is free and once your installation is complete, your costs reduce, without releasing harmful pollutants.

- Ground source heat pumps cut down on wasted electricity and eliminate gas, oil or solid fuel costs. With more efficiency than electric radiators, CO2 emissions are reduced.

- An air source heat pump is compact, needs no fuel storage space, runs on electricity without waste and means no gas or oil bills. Good for underfloor heating.

- Wood fuelled heating systems burn wood pellets, chips or logs. This offers a good use for waste wood and gives lowered carbon emissions. Dry, nearby storage space is needed.