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Fully electric flat
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Would just 1 NSH and a timer installed on the water get you to the 30% night on E7 to make it worth it?
If its a smart meter it can just be switched to E7 and use timers to use the night rate.
What was Novembers usage, or last Dec?
Good idea to have one main high storage heater in living room (2kw) and retain existing electric radiators - one in bedroom and one in corridor for those rare top ups. Dimplex Quantum G is the best storage heater as I understand and people seem to suggest I can wire them to existing single supply which is good news. I can probably change the radiator in the bedroom as well to storage heater but this less obvious.
I don't think I can put nice covers on the storage heaters due to fire concerns (just to reply to previous posts on this).
I can then shift perhaps 80% of my consumption to night tarrif (running washing machine, dryer, dishwasher and immersion heater at night.
Last question - which electricity provider is currently best in terms of night tarriff -, EDF? On other forums people suggested they won't take me on E7 as new client.
Energy Used Electricity only. Used 5975kwh in the last year in a 4/5 bedroom detached house EPC high B. Designed not retro-fitted ASHP Mitsubishi Ecodan, under floor heating ground floor, radiators 1st floor. Multi-fuel burner in lounge.
Energy usage reduction success below 6000kwh a year. Comfortable 19-21oC through winter depending on the room and vaulted ceilings etc.
Dyslexia sufferer don't be too harsh if I get things a bit topsy turdy.
We normally only used the living room one on E7, unless the temperature was forecast to be dropping to minus 5 or so for a few days. We did also use a small portable heater for a 30-45 minute top-up early evening.
How is your hot water controlled? Is it in a timer or simply keeping it topped up all the time?
Some of you have indicated they used 450kwh in December 2022 in a 110sqm all electric flat without a heat pump. This is simply insane. My summer usage is probably 300-350kwh with zero heating and without air conditioner. I am jealous but cannot understand how this is even possible.
Is there any smart way to understand what's the usage or my hot water cylinder. I am not convinced it onmy uses 2-3kwh a day as my summer usage is two high. I budgeted 10kwh a day for this. If so how a poster in a 110sqm managed to use 15kwh a day in his flat in December 2022 is beyond me.
It should be easy enough to get a clamp-on monitor to go round a wire to your immersion heaters to measure how much power they draw. I don't have one of these myself but I'm sure somebody else can make a recommendation. The only issue is that you may not have access to a wire that is common to both immersion heaters so you may need to get two monitors or measure them one heater at a time..
That was me, below is my daily use covering December, you can see that there was a spike in usage over the cold spell, with one day reaching over 40kWh. My summer usage is around 270kWh, I do not have air conditioning and that will be higher than others as I have a higher background load (lots of tech), I work from home a couple of days a week, I do video editing and I have a high spec gaming PC which can also draw a lot of power (during encoding or RT gaming can hit 600w). Now I am in my office 2-3 days a week depending on the week, but I am still at home 4-5 days a week. The spike at weekends is generally down to a couple of loads of laundry, the dishwasher, cooking something in the oven for a couple of hours (family over, cooking a roast) etc. I suspect the main difference is that at night I let the temperature fall somewhat and during the day I would aim to maintain 18c (which is not cold) where as you are trying to maintain 21c, every degree is worth around 10% of your heating cost so just by that you are going to use 30% more than me, ignoring any other differences.
Why do you think it uses 2-3kWh a day? If it is a 3kW immersion heater and it is on for an hour it will use 3kWh, it will in theory throttle down when it reaches temperature, but because of the way tanks are designed to get the bottom 20cm of water where the element sits up to 60c (or higher, depending on how it is set), it would need to get the water at the top of the tank a lot hotter. Two people taking 8-10 minute showers once a day at a sensible temperature (35-40c) would only need a 3kW element on for around 90 minutes a day, so only using 5kWh.
I think the primary culprit would be keeping you flat hot at 21c, other factors might be how long you are running the immersion heater for and if you are at home the majority of the day, most days of the week your usage from watching TV might be considerably higher.
- EDF do quote E7 for new customers. Online the quote page defaults to the current configuration at the address, but they show their phone number on the quote page for assistance, as in your case.
- E.ON Next are my supplier just at the moment and when I switched from their SVT single rate tariff to a fixed one, I also changed to a smart meter (a condition) and to the E7 option (my preference).