Installed biomass (pellet - bagged) and solar thermal in 2009. Solar thermal has been successful but biomass boiler was a Gerkros - who went bust 2 weeks after commissioning!
Biomass boiler blew its ECU in spring 2013, now converted to oil firing. Hitachi ASHP waiting in the wings pending installation of buffer vessel and reconfiguration of heating.
Favouring a 'fabric first' and energy reduction approach, over the last 3 years I have implemented a series of low cost energy efficiency measures to our 1980's home and have reduced our heating energy use by 60% and our electricity consumption by 50%.