JohnMo

It's not that small as you need a steam plant to go with it. So would be a car a 10 Tonne trailer.

Not sure there are any long term plans except concrete and lead lining of fuel waste, components removed during the plant life treated in a similar manner. Then decommissioning taken several lifetimes. Impact on the planet ignoring the above is pretty small, you use the heat to make steam that drives a steam turbine or two. There is no combustion by product that leads to global warming - just super heated water, used in the turbines. Renewable - no, radiation is from a fuel source it gets depleted and converted to a waste product. It happens the waste product is very dangerous to all life.

If that was the case there would be no wind turbines near us, but we have plenty, so maybe not that true. Maybe getting towards the number cats kill, but maybe not. So we should discuss banning cats also? That's a regular occurrence - or again, maybe not And gas doesn't have curtailment - they spend even longer offline but no one talks about it. They even have diesel generators on the same sites to allow gas turbines to start and get hot enough to bring the steam plant online in CCGT packages. A least wind can be taken on and off line very quickly by feathering the blades. That's an all wind or no wind argument, which isn't being discussed. Wind is part of a diverse energy portfolio. Unfortunately as @saveasteading infers, included nuclear, which is what we should worry about.

If it's an A rated cylinder the vacuum insulation, any other ratings it's most likely not vacuum insulation

Move washer to next to sink and dryer next to wall. Drain, water supply and electric in cupboard below sink?

Could have, but maybe they are sensible. That's why we have wind providing most of our electricity nearly all the time. Plus we can export energy. Think bigger picture is hydrogen generation instead of curtailment and that becomes another export product.

At least they are one of the better energy suppliers to talk with.

We are talking plumbers - most don't understand priority domestic hot water - rivnut no chance.

But up here is nearly the best wind conditions on the planet, so does make sense. I have no issues with them quite like seeing the blades moving, especially large turbines, small one spin to fast not quite the same

I would do a simple pergola with a solar roof. Do bifacial panels do they look good when looking up... Stops plenty of sun and generates energy as well while it's doing it. In landscape most panels are around 1750mm long. So you wouldn't need that many, if you want loads do them in portrait.

That is pretty flat, our house is around 10m at the deepest and 7m for most of it. So that would be only 1.5m buildup at the most. Ours was a 1:1 slope.

Yep that should be the aim, I suppose by coincidence showers and baths tend to be away from the doorway, so win win

Scottish building regs point you to having them at the source of steam either over shower or bath. We have then directly in shower space in two rooms and above the bath in another, but we use the shower in that room most the time. Both layouts work well.

The Swiss are doing it.

I did a similar build in our summer house, the floor performance for a given temperature (same flow temp as the house was pretty rubbish. I would screed or self levelling compound over to get good contact with the pipes then glue a floor down, any air gaps act as insulation.

We constructed our frame in 90mm square hollow tube, it is around 3 to 4mm wall thickness. Then we attached timber to the outside face and the windows sit in the wooden frame and in front of it. As the frame attached below insulation level its a thermal bridge so needs to be insulated internally

Leave it pressurised, thats the whole idea of it. There will be zero issues waiting a week or two if required

If its foam insulation no issues, if as said a vacuum insulated one, bang goes the insulation

not sure you want to do it with tap water - first it could be too cold and then have dew point issues and your bedroom ceiling landing on you during the night was its made lots of water and made the plasterboard weigh a tonne

If you mean under the insulation, then why not - they do ceiling and wall cooling solutions, your just doing ceiling as a retrofit

Was the driver for us getting a heat pump - started with gas. Never looked back, bills reduced massively

I would just buy an express version make life easy. Do you have a filling loop? If so you inject directly in to there. Do biocide and inhibitor from same company and range to ensure no compatibility issues

That's went my plan started to unravel - ended up with nice thick wool carpet in bedrooms - nice insulation for low temp UFH. If there was a next time fan coils for bedrooms and maybe elsewhere

You are correct. But either way wouldn't be doing a build part underground, if I had any other options. Too many variables to start costing you big money.

No from here https://shop.openenergymonitor.com/heat-pump/ Systems with the system are available to look at here All systems to see are here (mine is No. 2 on the 90 day, No. 1 on the 30 and 7 day averages. Now have a Haier heat pump, the Maxa is heating the hot tub. https://heatpumpmonitor.org/?period=last90&minDays=72