Daytime/nighttime ratio in Economy 7

glocal

Wywth, as I said we didn't have access to the meters until recently. Only the caretaker did. I wouldn't expect him to sit around until midnight to check if the meters switch over to night rate at 00:30!

I hope those average figures take into account individual consumption patterns too. I am certain the population average is nowhere near my pattern.

Wywth

glocal wrote: »

Wywth, as I said we didn't have access to the meters until recently. Only the caretaker did. I wouldn't expect him to sit around until midnight to check if the meters switch over to night rate at 00:30!

I hope those average figures take into account individual consumption patterns too. I am certain the population average is nowhere near my pattern.

So an additional lesson learned?
Always ensure you have access to your meter

If you have a strange consumption pattern, discuss this with your supplier who may request some evidence as to why and how long it has been going on for.
I don't think most suppliers have a very good supplier of crystal balls

grahamc2003

How does the daytime/nighttime electricity consumption ratio compare between winter and summer in a typical Economy 7, no gas household?

Here's how mine varies ...

jan 30.32%
feb 34.36%
mar 44.09%
apr 133.17%
may 138.29%
jun 167.10%
jul 197.33%
aug 193.08%
sep 121.76%
oct 89.26%
nov 84.17%
dec 65.67%

Richie-from-the-Boro

I'm not clear on how you've expressed that grahamc2003, but I make that just north of a 50-50% split per annum, perfectly compatible for a retired or home all day 24/365 dwelling.

NOTE : Its nice to see someone take the time to break it down into monthly pieces for the groups benefit.

glocal

Now I know my pattern is unusual grahamc2003, if I am reading this correctly, for every day rate unit in, say, January you consume about 3 night rate units. And then in July the day rate units are double your night rate units. Well, with the new meter my ratio in December is 1.6 (ie for every night unit I consume 1.6 day units). I suppose that's because I consume unusually little electricity at night -- I hardly ever use heating, which probably explains it. So, my summer and winter patterns are more similar than for other people. That was enlightening.

grahamc2003

Richie-from-the-Boro wrote: »

I'm not clear on how you've expressed that grahamc2003,

It's expressed as implied by his question i.e.

How does the daytime/nighttime electricity consumption ratio compare between winter and summer in a typical Economy 7, no gas household?

which is why i repeated the question in my post.

The figure for the whole year is 149% i.e. night units over the whole year are about 1.5 times the day units over the whole year. Or yet another way, night units are 60% of total use, day units 40%.

grahamc2003

I forgot to add that those are actual figures, with no estimating of any kind. They need adjusting for a totally electric household, because our main living area is heated by a woodburner. This would have quite a large effect of lowering the nighttime use compared to if the storage heater in that room were on. I could make a very good estimation of what the ratio would be should that big heater have been used instead of the woodburner.
Also, I have a few solar panels, but they would only have a small effect on the daytime units, but I could also adjust for that if you want.

glocal

Scottish Power did their sampling and projections. According to their records based on the faulty meter readings, over a period of 3.5 years the day/night split was 74%/26%. According the the new meter, over the last 21 days the split was 63%/37%. I thought the difference would be greater, but fair enough. What I find amazing is that they claim the 11% difference over 3.5 years amounts to £20, but they are happy to offer £50 as a gesture of good will etc.

I know it is impossible to tell without seeing more details, and I am not sure I have those details either, but based on gut feeling, does this sound reasonable? If 11% difference over 3.5 years is the equivalent of £20, that's under 50p a month! My consumption was indeed low at around 8kWh/day, but it really doesn't sound right. If it is right, I might as well ignore day/night rates in the future and do everything during the day. Any comments please?

HappyMJ

The split is normally 55/45 with storage heating...what do you use for heating? At 8kWh per day it doesn't sound like you use electric for heating as that is about the normal usage for someone with a different fuel for heating. The split then is about 80/20 which is normally the break even point for standard vs E7.

So....£20 over 3 years based on your posts sounds about right.

glocal

HappyMJ, your guess is correct. I don't use electricity for heating at all. If the difference between the typical 80/20 or my mis-recorded 74/26 and my actual 63/37 is only £20 over 3.5 years, or under 50p per month, it's not worth waiting until 00:30 to start the washing machine or otherwise change my consumption pattern! If this is true, I wish I knew that earlier!