Not much of this is DIY (well DIMyself), but anyhow we've now applied most of the heating conservation measures that we're going to this year, and even though October just gone was considerably colder than the previous year's, our heating requirement dropped from 20kWh/d to 17kWh/d, so I'm pleased. The entire bill for all the heating conservation measures will probably be similar to the difference between our mains gas bill and the average for the UK!
Also, it currently looks as if my current contract may hold out long enough for me to put up the extra grid-tie PV that I want to, 11 or 12 Sanyo HIT 215W panels driving a couple of separate Sunny Boy 1100 inverters (so that I can fairly freely interchange bits as I need to if something breaks), which should get us up to about 2.4MWh/year of generation compared to <2MWh/year consumption, and thus setting our house up to be a net exporter. The nominal aim is in fact to offset consumption of one of my hosted Web servers, but either view is good IMHO.
And as I say, we have a baby (or second) nominally due on Wednesday, but seemingly keen to arrive underbudget and ahead of deadline, unlike its dad! That will mean that we'll have to use a bit more energy, etc, than we might otherwise, but one nice feature of the thermostatic radiator valves (TRVs) we've had put in is that they should help to avoid rooms getting too hot, which is dangerous for the baby, and we can keep them much closer to the recommended 18C.
Rgds
Damon
