This is an emerging technology that has potential for the heating engineer as approximately two-thirds of the output is heat. The heat being the end result of the electricity generation process.

It can, however, only be classed as renewable if a renewable fuel is used to power the unit. (See below)

Reduced rate of VAT on the installation of wood-fuelled boilers

From 1st January 2006 the reduced rate of VAT (5%) for energy-saving material has been extended to include the installation of boilers fuelled solely by wood, straw or similar vegetable matter in homes and certain residential and charity buildings.
This measure is intended to encourage the use of microgeneration using sustainable energy sources, promote household energy efficiency and contribute to the Government's commitment to reduce carbon dioxide emissions.