Electricity Help

middlewife

DC fans run at about 35w flat out. Normally they are the ones with 1-12(sometimes 15 speeds) are your 2 electric fans  AC

One is 35w, the other is 55w. Just been experimenting with turning things off and on and checking on the smart meter display.  Not the most accurate way, I know, but gives some idea....

Mstty

middlewife said:

DC fans run at about 35w flat out. Normally they are the ones with 1-12(sometimes 15 speeds) are your 2 electric fans  AC

One is 35w, the other is 55w. Just been experimenting with turning things off and on and checking on the smart meter display.  Not the most accurate way, I know, but gives some idea....

Something is off then as you said Running 2 electric fans also bumped up the cost rapidly?

10 hours use of both would be about 28.5p on current price cap average rate running full speed.

Nikki19912022

Thank you everyone. An electrician is coming out Thursday to take a look. I switched the water heater off completely all day today. I’ve switched it back on now to monitor how much it spikes, but I’ve kept the immersion Heater controller off. Going to see how long the water lasts for and what it does with the kWh. 

Coffeekup

Nikki19912022 said:

Thank you everyone. An electrician is coming out Thursday to take a look. I switched the water heater off completely all day today. I’ve switched it back on now to monitor how much it spikes, but I’ve kept the immersion Heater controller off. Going to see how long the water lasts for and what it does with the kWh. 

Monitoring usage helps and can and does bring down the usage. But there will point you cannot pass.

I have combi boiler so water is heated through this, but my figures may give you another perspective on things. 
I like you turn off everything before I go bed and when I'm out of the house apart from the WiFi,  fridge freezer, phone and iPad charger (because I'm lazy about switching the latter 2 off). My electricity usage per day is around 2.5 kWh a day this time of year. Which is my low usage point I cannot pass. Because I need the fridge freezer on all the time, boil the kettle once a day and once or twice a week use the electric oven.
 

A quick Google tells me immersion heaters are typically 3kwh, so assuming yours is 3kwh and  you have it on a minimum of an hour a day that's 3kw used, add your evening cooking usage of 1.5kwh add my daily summer electricity usage of 2.5kwh.... that total's 7kwh a day. Which currently looks around the norm and is close if not worse than the number's your reporting now.

You may get this usage down a bit more once you figure out how long the water lasts once heated, or heating it for 30 mins Instead of an hour will reduce energy usage but will it give you enough water for that day? That comes down to your habits at home.

What would I do? Play with your immersion heater a bit more ask others who have an immersion heater on here what their usage is and what they do to keep it to a minimum.

I'll revise some numbers. 
Say the quality of life you want without watching your energy usage like a hawk during the warmer months April till October (7 month's) is 7 kwh a day. That's 210kwh a month on a 30 day month * 7 month's is 1470 kWh's.
Then from November your basic minimum usage will still be that same (210 kWh's a month) however you'll have the storage/panel heaters working more than likely. Which Will bump up your usage by 1 - 30 kWh's (I'm guessing) a day depending on how many you have on and how cold you deem the house is.
So assuming/guessing you'll use another 15kwh's a day for your heaters in the colder month's 15kwh x 30 day's = 450kwh + the basic minimum monthly usage of 210kwh will bring your winter month minimum to 660kwh.

So 7 warmer/summer month's usage total's 1470, and 5 colder month's (guestimates) usage = 3330 kWh totalling 4770 kWh's for the year. Factoring eon's price quote they gave you per unit of 46.37p that's £2211 + the standing charge 41.66p * 365 days = £152 add on the 5% VAT of £118 the total bill for the year will be £2482 or £206 a month.

All you have to do now is decide if you want that deal Eon are offering, find your daily monthly minimum usage, and watch and learn your winter months usage. 
If I were you record the monthly usage numbers in a spread sheet so you can compare year on year usage, and have a better idea future usage and cost projections.

k_man

As discussed in the posts above, if you are all electric, then 7000kWh is not high usage, and there is only so far you can go to reduce/control.

Just to reiterrate my point about immersion heaters and heating hot water in general, the bigger saving is not reducing how long water is heated for, but how much you use. Any extra water stays warm in the tank, losing very little heat (or cost), usually for a few days (obviously if you use hot water very infrequently, or very little, then the tank losses may be significant)


Another observation (not relevent for immersion heaters) : for my system (gas) hot water on once a day for longer uses less energy than twice a day for half the time.
I think this is due to losses via the pipes to/from the tank (from the boiler), before any water has even been heated, which occurs each instance hot water is heated. I suspect this will also be significant for heat pump based heated water.