SteamyTea

Not as many sheep though. Probably work it out roughly. Grass converts about 0.2% of the total annual irradiation to dry mass, dry mass has an energy content of around 3.5 kWh/kg. Halving the amount of sunlight will not halve the growth rate, but will, at an educated guess, reduce it by a third, so somewhere around 2.3 kWh/kg. To get better figures I would have to look at the UN FAO database and see how latitude affect crop growth. But I am too busy at the moment.

If we had a true carbon tax (it is levied on the big generators, a bit), then the economics would change. But I agree, roof top is the most expensive way to install solar. You can easily get 0.5 MWp on a hectare (10,000 m2) Bit more on sloping land. To put that into perspective, it is the same as 125 roofs with 4 kWp systems.

Looks like they're now targeting end of June 2025 They totally lied to me about the switch off date, and failed to mention that my billing would go to monthly, even after they assured me I was on quarterly billing. EDF had to give me £250 quid compensation.

I think they use the lack of airtightness to control condensation, they are/were an HVAC company really. Have you thought of making your own, it is only a periscope after all.

Not had a chance, sorry. But I think you are right about a 15 minute total runtime per hour. What will affect the frequency is the temperature difference between flow and return temperature, as that is what sets, in part, the energy needed.

Welcome Can you fit external wall insulation, or are the planners against changing the look of the place. What state is the flat roof in?

Last time I was up your way, I asked Mr MacDonald to show me his quarter pounders. I was quite shocked when he lifted his kilt.

Pumped storage was traditionally used to mop up the night surplus from nuclear reactors, trouble was, we did not build enough reactors as we retooled the grid to deploy CCGTs. In recent years, pumped storage has been used as scheduled generation (you can see this on GridWatch). This is not very efficient, but probably helps out financially. I think that was out of desperation after the tsunami. Japan has a very fragile energy balance, back in the 1970, they broke the oil embargo as they had 3 days of power left. Vertical panels, do work, but very expensive as they yield is relatively low. Solar farms are not all about land area. The costs of fitting to buildings is quite high compared to fitting in a field. And that is before the legalities of renting a roof. As for letting the plants grow, this time of year, down here, is daffodil time, fields full of inedible plants. Not all agriculture is for food stuffs. Plants have crap EI:EO ratio, about a 40th of PV. You also don't have to fertilise, irrigate and harvest PV.

Would need to knock up a spreadsheet, I am sitting in a cafe at the moment, maybe when I get home.

Large, land based, wind turbines are, to keep the sums simple, about 1.8 MW, so to match the same power as Loch Ness, you would need 1000 if them, all running at full power. Now turbines don't often run at full power, usually around 40% on average. So around 2,500, to match the 36 GWh generation. An average house uses about 3 MWh a year. Assuming a fairly event power spread thought the year, that is About 4.4 million houses. Something does not seem right somewhere.

Post up a sketch of the layout. Is there any reason you cannot put a horizontal DHW cylinder in the loft? A properly sized and commissioned monoblock ASHP would be quiet, easy to install and cheap. Get as much PV on the roof as you practically can, you may want to fit some batteries one day (they could be fitted outside). MVHR should be fairly simple in a bungalow. But layout sketch first, gives everyone an idea of what is where. Don't forget to put the roof orientation on.

Let us know how you got on. I often think about sunpipes, still have some prototype bit kicking about.

I did some work for Monodraught back in the 1990s. They were decent to deal with.

Probably as a general water management policy, similar to our SUDS. That raises an interesting point, if SUDS has to be employed, can a rainwater harvesting system replace it.

Base the price on South West Water. Have I ever mentioned that we have the most expensive water and waste in the country, which probably makes it one of the most expensive in the world.

I had one as well, head gasket had blown.

Get a different builder.

Going to be even longer now.

So Ripple Energy has gone tits up. May get rebranded as Nipple Energy by the receivers.

A quick Google and found this. https://support.google.com/youtube/answer/2853702 Seems that 4K TV can run at 10Mb/s. No point going above 40Mb/s.

Why if you are single. Seems a high price to pay for marriage.

Some connected devices report back to the manufacturer. Whether this is for quality monitoring or spying depends on how paranoid the customer is.

Measure the DHW temperature coming out of a tap, probably find it is a bit high. Is there an immersion heater that is coming on too frequently? As your minimum temperature is showing ~37°C, and your temperature sensor is low down, I suspect you are overheating. As a test, can you stop the heating for a day and see what happens to the tank temperatures, maybe some extra insulation will help. Take shorter showers.

Not easily as it all depends on which components you choose and how they interact with each other. Take @JohnMo's advice, fit and forget, when it breaks or looses too much performance, salvage what you can and replace what you cannot.

But what text format are you saving it as, will it be readable when you get to my Mother's age (95 years and 51 weeks).