advice needed

kiwi07

Hi, I wanted to find out how much electicity does one electic storage heater use. I am on Economy 7 tariff.
Yesterday, just before going to bed, I took my meter reading which was:
Total 01330
Rate4 (day) 00665, at 21.110p
Rate1 (night) 00664 at 4.60p

Today I checked:
Total 01340
Rate 4 (Day) 00674
Rate 1 (Night) 00666

As you will see, the day rate has done up from 00665 to 00674. If you calculate it's almost £2.00! for one electric storage heater. I am surprised to see the day time rate so high. I am supposed to be on Economy 7. Is it normal? Thanks

samtheman1k

Your meter will include everything using electricity in your house! Fridge, immersion, TV on standby, lights etc...(assuming the E7 supply is wired into the main circuit).

kiwi07

samtheman1k wrote: »

Your meter will include everything using electricity in your house! Fridge, immersion, TV on standby, lights etc...(assuming the E7 supply is wired into the main circuit).

How can I check whether or not the E7 supply is wired into the main circuit? Thanks

Swipe

If you post the make and model number of your storage heater we will be able to tell you exactly how much it will use on full charge

kiwi07

Swipe wrote: »

If you post the make and model number of your storage heater we will be able to tell you exactly how much it will use on full charge

It's Creda TSR18AW - 79351 Sensor plus Heater.

Thank you!

Swipe

The Creda TSR18AW is a 2.5kw heater. So will use a maximum of 17.5KWh over the economy 7 hours. If your night rate is £0.05 per unit it will cost you no more than 87.5 pence per night to run on the max setting

kiwi07

Swipe wrote: »

The Creda TSR18AW is a 2.5kw heater. So will use a maximum of 17.5KWh over the economy 7 hours. If your night rate is £0.05 per unit it will cost you no more than 87.5 pence per night to run on the max setting

Thank you. Why is the day rate so high? I just don't understand.

Swipe

oki1875 wrote: »

Thank you. Why is the day rate so high? I just don't understand.

The storage heater should be on the E7 circuit and only come on during the night. Everything else should be charged at the day rate unless you use it during the E7 hours.

macman

oki1875 wrote: »

Thank you. Why is the day rate so high? I just don't understand.

Because that's how E7 works. You get 7 hours cheap rate at night for charging your storage heaters, but the trade-off is that you pay a higher rate than a non-E7 tariff for all your non-E7 consumption during the other 17 hours.
Which is why you need to be using a decent proportion of your total power on the cheap rate-probably upwards of 33%. If it's lower than that, you are probably worse off on E7.
If you run high-wattage devices (other heaters, water heaters, electric showers, cookers etc) on peak rate, it will cost you dear.

kiwi07

Swipe wrote: »

The storage heater should be on the E7 circuit and only come on during the night. Everything else should be charged at the day rate unless you use it during the E7 hours.

I know, but if you see my meter reading:
Yesterday, just before going to bed, I took my meter reading which was:
Total 01330
Rate4 (day) 00665, at 21.110p
Rate1 (night) 00664 at 4.60p

Today, in the morning, I checked:
Total 01340
Rate 4 (Day) 00674
Rate 1 (Night) 00666
During the night I used: 1 electric heater, fridge, immersion, (my tv is not on stand by!).

As you will see, the day rate has done up from 00665 to 00674. Why is that?

Many thanks.

macman

The E7 rate is only between about midnight and 7am. If you had the immersion heater on outside of those hours, it won't take long to use 9kWh.
To be precise, you would need to take readings at the start and close of the E7 period.