Since we moved into our current house we have continually aimed
to reduce our gas and electricity use year on year. We started with
a number of behaviour changes relative to the previous owners - which
saved 50% on gas an electricity on the first year. Since then we
have gradually replaced old/worn out/inefficient things with modern/highest
efficiency replacements/alternatives and significantly improved
the insulation in the loft space and under the ground floor.
| Year | kWh | Total |
|---|
| Electricity | Gas | kWh·m-2 |
|---|
| 2009 | 5 000 | 22 000 | 233 |
| 2010 | 3 000 | 19 000 | 188 |
| 2011 | 2 675 | 13 945 | 137.4 |
| 2012 | 3 526 | 9 606 | 108.5 |
| 2013 | 2 391 | 9 402 | 97.5 |
| 2014 | 1 295 | 3 749 | 41.7 |
The 2009 and 2010 years are estimated and 2010 contains both our and the previous
owners usage. 2014 contains only 61% of the year, so isn't comparable yet. I could
also do with a scaling factor for the weather as some winters are radically
different from others and that makes a big difference to the winter
gas figure.
Even though the 2009 figure is an esitmate it's still only about two thirds the
EPC survey the house came with when we bought it of E/48 - 314 kWh·m-2,
and we're already loads better the best estimate of D/55 - 275 kWh·m-2.
posted 12:36 ::
/stuff/house ::
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