Crofter

So if I'm reading it correctly, you're getting mean summer prices of: 2021- 22.4p 2022- 34.6p 2023- 18.6p Your 2021/22 numbers match mine, I don't know what I did for the 2023 ones. I'm going to have to figure out how much of my energy use is DHW, as the off peak E7 rate undercuts these figures.

I'm in the northern Scotland region. What I was trying to do was find the daily average price for the period 1st April to 1st November each year. So I tried SUM(Ex:Ey)/z Where X is r start date, y is the end, and z is the number of days in-between. But there's something weird going because the cell numbers and the number of days aren't matching up.

Does somebody fancy checking my homework? I'm trying to use Excel on a phone and something isn't adding up.

https://files.energy-stats.uk/csv_output/?_gl=1*18272gn*_ga*MjI2MDA0NzkuMTcwNDQ3MDA3Mw..*_ga_Z4Z11HYTZ1*MTcwNDU0MDgyNS4yLjEuMTcwNDU0MDkwMy4wLjAuMA..*_ga_M45TVRXZ04*MTcwNDU0MDgyOC4yLjEuMTcwNDU0MDkwNC42MC4wLjA.&_ga=2.196785900.1717887741.1704470074-22600479.1704470073 Maybe I've made a mistake, I just did a quick calculation on the excel sheet and that's what it returned.

On the other hand, we don't need to have things like fire exits marked. It's recognised as being a house in which a business is conducted, rather than business premises. So probably closer to a home office than a shop or hotel.

Don't know. I don't recall every being told that. Accommodation-based businesses do tend to sit between two camps. In some respects it is treated as a house, not a one bedroom hotel.

So I've had a look at the numbers and it doesn't actually look all that great. Our property tends to be occupied from about 1st April to the end of October, and if I average out the tracker rates over those months I get the following: 2021- 22.5p 2022- 34.8p 2023- 27.3p Some more research required but it's maybe not the easy win I was hoping for.

Exactly. The properties are generally empty over the winter months. Where can I find historic rates for this tariff?

Just heard about this tariff. Very interesting. According to the blurb on their website it offers low prices over the summer and higher prices over winter. For most people this would be a problem, but I'm in an unusual situation with two properties used as holiday lets. They're predominantly occupied in the summer and nearly empty all winter. Anybody on the forum using this tariff? https://octopus.energy/smart/tracker/

I'd be tempted just to sit the stove on the floor, although I believe you need to delineate an area around it. You could use a tempered glass hearth for that. Not sure how you'd get on drilling a hole through it for the air supply...

Depends what the limiting factor is- space or budget. I'm sure you could knock something up using threaded rod and a windscreen wiper motor. Not sure about the control side of it but it can't be that hard.

Welcome aboard. What sort of project do you have in mind- an extension to your existing house?

What is a high temperature heat pump? Does it use some sort of multi stage cycle? And surely any heat pump will be more efficient at lower flow temperatures. So just because it can achieve a reasonable COP at high flow temps, surely it will still make sense to use larger rads etc and run it colder?

That's a fascinating graph. I wonder if BTL landlords threw a hissy fit when they saw all the council houses being built after the war.

I knew there had to be some kind of a catch...

Interestingly, when I get a quote from Octopus straight from their website, I get offered a normal E7 tariff. But searching specifically for the Intelligent Go tariff gets me the kind of rates you're taking about.

Who is that with? I can't seem to get a tariff like that.

Yes it does. But in general your COP will be above 2 and the night rate will be half the cost of the day rate. In practice the COP will be significantly higher unless there's something seriously wrong.

But without the battery you can't really use that 15p electricity.

It's cheaper to run ASHP on peak rate than storage heaters on cheap rate.

This is what I'm wrestling with at the moment for my planned upgrades next year. E7 only makes sense if you can shift loads and store energy in the form of hot water, or in a battery or EV. If you used energy at a constant rate through the day and night then you're better off on a flat rate tariff.

@Gill those room sizes are enormous! Is it a ft²/m² mixup?? Thanks for posting the update, really useful for someone like me considering making the switch soon.

Thanks, sounds like a good fit for your usage. Our house is mostly used as a holiday let and I need something pretty simple, with a central control. I'd also really like the ability to control it myself remotely because it's not unusual for guests to turn the heating right up and then leave, and I can't always rely on the cleaner to remember to turn it down again.

Great thread, thanks. I've already got a fairly new direct UVC so I'm a bit loath to replace that. Need to price up a DIY installed PV+diverter system. The panels are crazy cheap at the moment and I've no shortage of places to put them. Would probably ground mount and use the space underneath for storage. Did you go with multi splits? I've been considering a ducted system but I might be over thinking it.

Our changeovers work out at about £30/hr. You'd think that would be pretty attractive but in a location where there are thousands of STLs and most young people move away to study, it's not at all easy to get people to do it. Admittedly our two properties are pretty quick to clean which might distort our cost per hr. A friend had to give up on his STL plans after failing to get a single person interested in doing the changeover, at any price. We've been quite lucky, and been able to persuade recently retired friends to do it, or to at least fill in. Gardening is also difficult, very few people want to do strimming through a Scottish summer with the rain and the midgies. We've had to sack one gardener already because the place looked like a jungle. I wonder if he was even showing up. One cleaner decided she'd like a day out to Inverness and the house didn't get cleaned. We were incredibly lucky that the previous guests had left it almost spotless, and the new ones just complained that the towels were damp. Absolutely mortifying for us. We don't use that cleaner any more.