Calculate Your Kilowatts

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Energy Saving Formula

Energy saving calculator coming soon…

#Step 1 Make a list of electrical appliances from your home or office/workspace

#Step 2 Find the wattage on the appliance label

#Step 3 Multiply wattage by hours used each day

#Step 4 Multiply your answer by the number of days you’re measuring.

#Step 5 Divide the result by 1,000

#Step 6 Multiply by the cost of electricity per kWh. eg 18pence per kWh

Specific Example on calculating your energy

Lights

Calculate how many bulbs are left on in rooms when no one is in them. Estimate how many hours lights might be left on in an empty room
(say 12 bulbs 12 w), probably 2 hours per night.

12 bulbs x 12 watts x 2 hours = 288watts
288 watts x 365 days per year = 105120 watts per year wasted.
105120 watts divided by 1000 = 105 kilowatts
105 kilowatts x 0.18 (pence per kilowatt) = £18.92

Turn off lights when you are not in the room. The bathroom, kitchen, hallway and bedroom are usually the main culprits.

Save energy by reducing your gaming time. Even playing for one hour less a day could save you £18.72 a year.*

PlayStation 4 consumes electricity at 285 watts per hour, closely followed by the Xbox at 254 watts per hour.

Gaming

The PlayStation 4 consumes electricity at 285 watts per hour, closely followed by the Xbox at 254 watts per hour.
Say a typical playstation household use 3 hours per day
3 x 285 watts per hour = 855 watts
855 x 365 day per year = 312075watts
312075 watts divided by 1000 = 312 kilowatts
312 kilowatts x 0.18 (pence per kilowatt) = 56.17 per year

By reducing your gaming by just 30 minutes a day you could save
£9.36 a year
285watts per hour divided by 2 = 143 watts
142 x 365 = 52012 watts
52012 watts divided by 1000 = 52 kilowatts
52 kilowatts x 0.18 (pence per kilowatt) = £9.36

TV

Switching to standby is better than leaving your TV on, but it’s still more energy-efficient to switch it off completely. Rather than using the normal viewing setting on your TV, switch it to energy-saving mode, this usually dims the backlight which means the power consumption should drop by a third.

A 32” LED TV uses about 18 watts of energy. Moving up to a 40” LED increases that energy use to 31 watts, and a 55” LED TV uses about 57 watts or 2x the amount of electricity as a 32” TV

Basing example on a 55” TV, by switching to energy saving mode you can reduce consumption by 19 watts an hour.

Number of hours TV on per day 10 hours x 19 watts = 190 watts per day
190 x 365 days per year = 69350 watts
69350 divided by 1000 = 69.35 kilowatts

Switch your TV off when you are not watching it. If you think you might forget, why not switch it to standby mode? That way if you do, it will turn off automatically.

Rather than using the normal viewing setting on your TV, switch it to energy-saving mode, this usually dims the backlight which means the power consumption should drop by a third.

If more people left the car at home every day, particularly for short journeys we can reduce our fuel consumption. We would also reduce levels of road congestion and free up our streets, making them safer.

Car journeys

The cost of short journeys to society including factors such as road accidents, infrastructure, traffic jams and air quality is £750 per car user or £23 billion for Britain. 15,000 lives could be saved through increased physical activity if more short journeys were made on foot or by bike, equivalent to £20 billion.

If more people left the car at home every day, particularly for these short journeys, how much would this affect levels of clean air on a daily basis. We would also reduce levels of congestion and free up our streets, making them safer.

Target fossil fuel (diesel and petrol) and reduce your driving by 2 short journeys a week 10 miles at an average cost of £0.55 per mile = £5.50 per week
Annual miles reduction 520 miles at a cost of £0.55p per mile = £286 per year
Commit to fossil fuel reduction in a kwattswap of £50 donation to green clean energy for Africa

More ideas of how you can save kilowatts…

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Heating and cooling

Put on a jumper and some socks instead of cranking up the heating. It’s also helpful to put the heating on a timer so that it doesn’t run all day and through the night.

In summer, open the windows and get the breeze in rather than putting the air-con on.

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Kettle

Only boil the water that you need. Use the water while it is still hot to avoid re-boiling.

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Fridge

Close the door behind you so that the fridge doesn’t have to work harder to get back to the right temperature.

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Hairdryer
and straightener

Let your hair air dry every now and then and save on the energy consumption.

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Washing machine

Use on energy saving mode, make sure you do full loads so you are not doing more small loads.