My partner and I are currently completing a half built house. As we both have degrees in Environmental Studies, we were very keen to use the latest technologies, for instance; ground source heat and biomass to heat our home. We have fitted wet underfloor pipes in eager anticipation of using these to keep warm in a green way.
To our amazement, after a great deal of research and soul searching, we have discovered that the most efficient way, in terms of both cost and energy use, is to have an ultra efficient electric boiler. This can take advantage of the off peak half price electricity that is available between 22.00 and 6.00.
This is used to heat water which is stored in an ultra insulated storage tank which can be released during the day to supply our hot water needs and heat the house as well.
The cost of the boiler is about 25% of the other technologies and we can spend the difference on putting 30 cms of insulation on the outside walls of the house which will reduce our heating needs still further.
So what looks like the greenest solution is not always the best one. Take your time deciding which way to go, you will live with it for a long time.
By ayesha christmas from Slovenia EU