S2D2

Relative to standard variable it's -40% in the six hour cheap period, +60% in the three hour peak period, around 42p. You can check exact rates/standing order for your region here: https://octopus.energy/smart/cosy-octopus/?location=rates

It's hard to tell but looks to be <1cm from the bottom of the open window to the sill? Fine if you only ever want to tilt the window but if you wanted to fully open it you might struggle to get a frame slim enough to avoid fouling it when opening the window.

Looking again there seems to be almost no clearance on the inward opening windows, so it may be a non-starter.

As usual this makes a joke of government targets. Doesn't matter if it actually functions or not, allowing the user to leverage smart tariffs, the box for "installed at this property" gets ticked...

Interesting, though with all Octopus tariffs it depends... Cosy is ~16p/kWh in the cheap period though depends on a battery to stop that figure climbing outside the cheap period. You'd need to factor in the increased cost of times outside these figures due to your high base load. I've been interested in this tariff too but haven't done the sums yet.

Big help for noise in hotels, but motorbikes may be a step too far as there seems to be no interest in limiting their noise levels.

Same with the export, I specifically applied for outgoing fixed which seemed to confuse things even more, maybe an email to them would have been better? Usually the UI is a mess for 48 hours then it all comes out the wash. Indeed, it tops up the battery like the solar used to and six hours a day of cheap heat pump should definitely help with winter costs! I've parked all the complicated battery management logic and just gone for 100% charge in the cheap periods as cheap Cosy is close enough to Fixed Outgoing export to not faff about.

Finally time to say goodbye to Flux and jump ship to Cosy for the winter. Haven't paid a penny for energy whilst on Flux (including gas and both standing orders) and remaining credit should last to the end of the month so 7.5 months of free energy, can't ask for more really!

If only every company were as open with their APIs, another big plus for Octopus.

Used this exact service for standard walnut, no issues at all, it looks great.

Yes they're doing a lot of good for renewables. For info, I'm just about to switch away from Flux, probably to Cosy as there won't be much meaningful export over the next 5 months and the extra cheap period will mean exclusively off peak usage with the heat pump. The ideal would be intelligent and a larger battery but I haven't done the sums yet.

This is interesting and could be the reason for my high quote as the EPC is very out of date. Waiting to see if I can get the quote adjusted after the survey.

No problem, I should add that Octopus doubled their export rate after I did those calcs so it turned all the sums on their head and pointed towards an MCS install. They then increased them by another 50% with Flux after the system was installed and it's performing very well as a result. Ended up installing 5.2kWp panels and a 2.8kWh battery which may need increasing now I've started down the heat pump route.

This might be worth a look for sizing battery: I'll do an update against actuals at some point, went MCS in the end and filled the roof on the scaffolded elevation as that seemed the most cost effective approach. Battery sizing has a much harsher drop off though so be wary of chasing that last 10% of usage as things start getting silly. With export payments where they are and heat pumps getting more affordable, I'm glad I didn't bother with a hot water divert as I would have turned it off by now and used cheap rate electric. This can change at the whim of the market though.

I don't understand what assumptions they base their quote on, I was quoted for a similar arrangement at 5.5k, so £13k before grant. Bit of a postcode lottery it seems. I'm currently deciding if I can be bothered to get them to do they survey and argue for the quote to be reduced based on that, I think they are assuming I have microbore pipe and such which I don't.

Citric acid powder + water, cheap as chips. Not sure how careful you'd have to be with the shower head finish but works a treat in a kettle.

It's still within say 15% of symmetric after losses so still better than other offerings, just primarily a summer tariff. I'll probably need cosy over the winter as the battery isn't big enough for no solar and the heat pump going. So that would mean outgoing fixed yeah for the tiny bit of winter export. They changed intelligent to allow you to be on outgoing fixed at the same time but I'd need an Ohme charger and probably a bigger battery so not really worth the hassle.

Prices changing from October, though it's not a Winter tariff anyway: Import down ~9% Export down ~12-15% Rates can no longer even pretend to be symmetric, so it seems it may be less of a no brainer next year. Intelligent looking good now that it pays 15p export but strict conditions for joining.

It does seem to be a bit too good to be true on their stated outputs: Kudox alulite 1800x280mm=702W(d50) Eskimo column 1800x233mm=1522W(d50?) Heat geek got caught out by this with his home rads, the stated output randomly used d65 on the website without specifying rather than d50, so all of his calcs were off. I suspect something similar is going on.

Have you got a link to the correction calculation? The tool is rather crude hence giving me the "next size up". Interested in the height note as you will get a stack effect I guess.

Indeed Manufacturer of heat pump specifies them for defrost cycles. Solved with buffer/Volumiser on the return Are you sure? If I use the site calculator it suggests I need 600*720@£677, comparable steel kudox premium T22 600x1200 @£80. Not comparing apples with apples from an aesthetics perspective, but that's a big jump. If you're set on the "designer" price tag then maybe not such a jump.

Some random thoughts: Would galvanic corrosion be an issue or is the PTFE sufficient? They claim water content is 1/4 that of a comparable steel rad, which will make minimum system volumes harder to meet. A 720x660 rad is £429+£40 postage?!

If a height was specified such that the fence would be hidden, fair argument. But if not, I don't think the planners are being unreasonable by considering something which is our could become (without breaching a planning condition) visible. If you still don't agree, then appeal, as is your right. Only you can decide if it's worth the time and effort.

What height is specified and how did you satisfy the condition if your hedge won't reach that height for a few years?

As others have said planning don't consider the hedge which can be removed on a whim. Make it PD, which you've said you would prefer the look of, and spend your energy elsewhere.