Measurement campaign: power consumption of a family
published: 27/02/08, 23:25
Each year, during the annual regularization my electricity bill, I asked myself the same question: why do we consume so much? And especially what steps to take to effectively reduce our consumption?
Our annual electricity consumption varies between between 5000 and 5500 kWh / year (5 people family with electric water heater). What all this energy food ???
Following reading (among others) good advice published on forums from econologie.com, I decide to buy a wattmeter (shhh, don't tell them that I didn't buy it on their site ...). What is very interesting with this device is to be able to establish a quantitative assessment of the annual electricity consumption of each device. It takes a certain amount of patience… but the results are very instructive.
For example (results will vary of course widely from one household to another!), I give you my little balance to the following address:
http://spreadsheets.google.com/pub?key= ... FT37MdYyWg
The methodology is simple: place successively each device under control of consomètre during 2 weeks, meet daily consumption, then extrapolate 1 full year estimating seasonal variations (eg the boiler is cut from May to September, the dryer turns less in summer, etc.). This sometimes requires a few tweaks (eg connected in three-phase stove) ... or downright another technique based on the estimation of daily life in known power (eg lighting).
This table tells me especially that I could easily reduce my consumption of over 50% without any loss of comfort ... Stay tuned!
I have not found another report of this kind on the web ... shame, it seems to me instructive ...
Our annual electricity consumption varies between between 5000 and 5500 kWh / year (5 people family with electric water heater). What all this energy food ???
Following reading (among others) good advice published on forums from econologie.com, I decide to buy a wattmeter (shhh, don't tell them that I didn't buy it on their site ...). What is very interesting with this device is to be able to establish a quantitative assessment of the annual electricity consumption of each device. It takes a certain amount of patience… but the results are very instructive.
For example (results will vary of course widely from one household to another!), I give you my little balance to the following address:
http://spreadsheets.google.com/pub?key= ... FT37MdYyWg
The methodology is simple: place successively each device under control of consomètre during 2 weeks, meet daily consumption, then extrapolate 1 full year estimating seasonal variations (eg the boiler is cut from May to September, the dryer turns less in summer, etc.). This sometimes requires a few tweaks (eg connected in three-phase stove) ... or downright another technique based on the estimation of daily life in known power (eg lighting).
This table tells me especially that I could easily reduce my consumption of over 50% without any loss of comfort ... Stay tuned!
I have not found another report of this kind on the web ... shame, it seems to me instructive ...