Before going ahead, we really recommend to first have a look to the Effiworkx YouTube channel videos. On those videos we explain concepts that you need to know if you really want to find out how to reduce your electricity consumption.
Switching to energy efficient bulbs it is most probably one of the easiest and quickest way to reduce the electricity consumption.
LEDS are by far the most efficient type of bulbs and swapping from incandescent bulbs to LED bulbs it is the most cost efficient solution, even after taking in consideration that the LED bulbs are more expensive than the incandescent bulbs.
|Bulb type and characteristics||Incandescent||CFL||LED|
|Bulb wattage (Watts)||60||14||7|
|Bulb prize (approx.)||1||3||3,5|
|Bulb lifespan (hours -approx.)||1,000||10,000||15,000|
|Number of bulbs needed over 10 years (12,500 hours approx.)||12,5||1,5||0,5|
|Bulbs cost over 10 years||12,5||3||3,5|
|Total electricity cost over 10 years (at 0,17 euro per kWh)||127,5||59,5||29,75|
|Total cost over 10 years (material cost + electricity cost)||140||62,5||33,25|
Some devices continue to use power even if they are not being used actively, while they are in standby mode. Those devices that use electricity while they are not being used they are called phantom loads or vampire loads
And there it is the problem, we are wasting valuable electricity and money without knowing about it. This is why it is so important that we get to know what the standby power consumption is.
– Calculate how much electricity is consumed by a device or appliance in standby mode –
If you need to know how to measure the power consumption, have first a look to this post.
If you want to reduce or eliminate the standby power consumption, consider the following options:
Fridge, dishwasher, tumble driers, electric ovens… are some of the home appliances that use the most of the energy. This is why one of the most common piece of advice when it comes to saving energy it is to replace old and power hungry appliances for newer and more efficient ones.
But you need to very very careful, you must be sure that the cost of buying that new appliance it is not higher than the energy savings it will bring.
Have a look to the table below where we compare the costs of buying and running over time two Energy Star rated fridges.
|Fridge efficieny class||A+++||A++|
|Power consumption per year||174 KWh/year||252 KWh/year|
|Electricity cost per year at 0,17 kWh||29,58||42,84|
|Electricity cost over 20 years||591,6||856,8|
|Total cost over 20 years (fridge+ electricity)||1750,6||1755,8|
♦ In this case, buying a more efficient fridge it is not to save us any money over time ♦
– Calculate if it is really worth to buy a more energy efficient appliance –
The theory behind the dryer balls is that they accelerate the drying process because the balls prevent the laundry from sticking together so the warm air can circulate more easily. Also, the dryer balls have additional benefits like softening the fabric and preventing static.
Tumble dryers will no work efficiently if they are packed because without room for the air to circulate, it will take a very long time for the load to dry. So, having into account this advice and by just adding dryer balls to the load, it may be possible to reduce the drying time up to 20%. This means a potential electricity consumption of also a 20%.
|Tumble dryer||Without balls||With balls (20%)|
|Electricity consumption||174 KWh/year||139 KWh/year|
|Electricity cost per year||29,58||23,63|
|Electricity cost over 10 years||295,58||236,3|
|Total savings over 10 years||n/a||59,28|
Note that in this case we are still in the process of testing the tumble dryer balls. Still, after reading many reviews we believe that it is a quite inexpensive to reduce the tumble dryer electricity consumption.
– Find out if buying a tumble dryer ball it is really worth the cost –
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