does anyone know of a platform/forum where people measure and compare the energy consumption of their devices? I bought an energy metering plug, and now I can find out how much electricity my dishwasher, microwave, kettle, hairdryer, etc, consume. But I have no idea if their level of consumption is good or bad, unless I can compare with those of other people, to learn whether I should use different appliance settings, or even buy new appliances! Anyone know of a site of forum where I could get such info?
tldr: Look at power rating of different appliances (show in W or kW typically), or most simply try to buy Energy Star appliances.
The first thing that you should know is that if you are trying to be as sustainable as possible the manufacture of the products must be considered. If the appliance has a short life or low energy consumption throughout its life then it is likely that the manufacturing methods (material use, process, etc) will contribute much more to the environmental impact of the product.
If you really wanted to have a somewhat accurate estimate of the impact of one appliance over another you should find or do LCA analyses. This typically is not practical for most small appliances, and realistically the differences may not be clear between products from different companies.
However, if you make the assumption that the manufacturing methods are similar between products and want to make a judgement solely on energy use you can try the following websites. Or try searching "database of energy consumption of appliances"
- http://www.energyrating.gov.au/ (Australian database)
- http://www.tpcdb.com/ (Computer focused),
- http://eetd.lbl.gov/sites/all/files/lbnl-184403.pdf (it sounds like this database should be useful once operational)
Multiply the power with time you use the device and concentrate your efforts on the key expenditure contributors. You should google for the typical and best devices in the class: what is normal and how good can it go and what are natural, environmental implications for producing the most energy efficient devices? Yes, that is also important. If you use a lamp once a year for couple of minutes then it may be not the best idea to buy an ultra-expensive and poisonous led lamps.
Actually, you better record your figures and lend the power meter to the friends. You do not need the meter anyway and you do not save environment if you buy individual stuff. You must share. The friends may report you their recordings as extra benefit. Meantime, you can approximate the consumers quite closely by plain your hand. The energy waste inevitably takes the form of heat (you may notice that light and sound do not take a lot of energy away). The evil is the entropy, the thermal motion at microscopic level and you increase the amount of evil when heat up anything. So, the warmer is the device, the more evil it is.