Trying to workout standby cost is this correct?

AdventureRocks

Hi,

I am looking at buying a countdown plug which turns off the appliance after 30 minutes.

The plug in standby uses 0.3w

My energy cost is 4.1777p per kwh

This is my calculation 4.1777 / 1000 = 0.0041777 per watt

0.3 * 8760 hour in the year = 2628 watss

2628 w * 0.0041777 = 10.97pence per year?

Thank you

System

Forgive me but surely the calculation that you need to work out is the cost of the plug compared to the savings that you will make - bearing in mind that each plug works with one appliance? What particular appliance do you have in mind given that most appliances have a very low power standby load (e.g., an LED TV is 0,3W)

Your electricity cost is surprisingly low unless you are using an Economy 7 low tariff for your calculations.

AdventureRocks

Hengus wrote: »

Forgive me but surely the calculation that you need to work out is the cost of the plug compared to the savings that you will make - bearing in mind that each plug works with one appliance? What particular appliance do you have in mind given that most appliances have a very low power standby load (e.g., an LED TV is 0,3W)

Your electricity cost is surprisingly low unless you are using an Economy 7 low tariff for your calculations.

Well it is to turn a extractor fan off after 30 minutes , so i don't have to remember

I have a low energy cost but my standing charge is 30p a day

System

AdventureRocks wrote: »

Well it is to turn a extractor fan off after 30 minutes , so i don't have to remember

I have a low energy cost but my standing charge is 30p a day

Are you sure that you are not using the gas price for your calculation? What supplier/tariff are you on? I am paying 26p per day stdg charge and 10.99p per unit and it is one of the top fixes on the market today.

Cardew

AdventureRocks wrote: »

Hi,

I am looking at buying a countdown plug which turns off the appliance after 30 minutes.

The plug in standby uses 0.3w

My energy cost is 4.1777p per kwh

This is my calculation 4.1777 / 1000 = 0.0041777 per watt

0.3 * 8760 hour in the year = 2628 watss

2628 w * 0.0041777 = 10.97pence per year?

Thank you

Where do you get energy(electricity) for 4.1777p per kWh? Indeed what company quotes electricity prices to 4 decimal places?


How do you measure that the plug in standby uses 0.3w?


If the appliance did use a constant 0.3w(24/7) then it would use 2.628kWh a year. I doubt if you pay less than 10p/kWh (in UK) so you need to multiply the cost of a kWh by 2.628. e.g 2.628 x 10p =26.28pence

AdventureRocks

Hengus wrote: »

Are you sure that you are not using the gas price for your calculation? What supplier/tariff are you on? I am paying 26p per day stdg charge and 10.99p per unit and it is one of the top fixes on the market today.

your are right i am paying 13.871p per kWh SC 26.019p per day