Dorset Greener Homes -
still open for visits.
Over 40 homes were open during Greener Homes weekends in September. However if your missed them, most of the homeowners are happy to talk to you or show you round by appointment the rest of the year. You can find out about heat pumps, the economics of PV and batteries, insulating your home, or saving energy costs cheaply, by talking directly to householders who have installed them and are willing give you the benefit of their experience.
See this link for details of the homes, and how to contact the hosts.