SteamyTea

Any PV will have to be level with the top of the standing seam. So the looks are going to change. So you may as well look at a different roof covering for the PV side. In reality, you will not notice the PV, or the roof covering anyway. We usually sit inside a house, half the times it is dark, and roofs are high up. My house sits nearly two meters higher than the road, I cannot see the roof when I am in the front garden.

What sort of insulation and how many x's. We consider a U-Value of 0.1 W/m2.K pretty good. But if we increase the K to a delta of 80, rather than 10, losses become significant.

Shall we look at that. So between the 1st October and 1st Jan 2023, out low CO2 generation was higher than out fossil fuel generation. The reality is that we are changing the generation type, and it is working reliably. As I said, it will not happen over night, and there are challenges to over come, but making a wild claim that cannot be backed up with data just panders to prejudice. Follow the green and red lines, the columns are my usage and irrelevant in this context. The missing 6% is imports, as I don't know the generation type and biomass, as I don't consider it low CO2.

Yes, we all have to do a little bit to help. When you go to buy a new car, you probably get one that is more economical, but probably just as quick (we are limited there) and just as reliable and comfortable. Much of that improvement is done by the manufacturers, but driven by legislation. I don't here people complaining that their new cars use too little fuel and it will all end in tears. We are currently at the start of the transition journey, it is not going to happen over night, just the logistics of manufacture alone is going to hold us back. So in the mean time, we, as individuals, are expected to help ourselves. I did, 3.3 MWh of energy used in the house last year, 2005 I used 11 MWh. And I can reduce that more if I swap out my resistance heating system for heat pumps, and stick some PV on the roof.

That is the whole idea, replace CO2 intensive generation with very low CO2 generation. It has worked well so far. Yes there are challenges along the way, but not technical ones. Worth remembering that we now use less energy than we used to.

Last night between 22:00 and 00:00 the temperature increased by 2°C, 5°C t 7°C. Now it is 9°C. I like the storms, it gets warmer.

I think there is. Here is what can happen in a decade. Both increased by a facto of 4.

Not sure, does depend on government's intervention in the market place. We may also save in other areas. As an example, if we still killed the same relative number of people on the roads as we did in the early 1950s (~5000/year) today we would be killing 65,000 people each year based on passenger miles. To a certain extends, we tend to think that fossil fuels are very cheap, but once all the prices are taken into account, they are probably not as cheap as we believe. Loosing a major local supplier i.e. Russia has been a failure of government(s) foreign and trade policy, not of energy generation. The big problem is that we cannot change the infrastructure overnight, and the current government is pretending to care, and do the right things, but have in fact just kicked the can up the road again.

You listening to Radio 4 right now? It is all about peoples attitude to climate change https://www.bbc.co.uk/programmes/m001gkq8

Yes, very basic thermodynamics. The devil is in the non-linearity of it. And I shall say it again. Power and Energy are not the same thing. You can store lots of energy, quite easily; heat a rock, lift some water, heat something, change the chemistry, even burn something that has grown. Getting the power back out is the really hard thing. As a simple rule, once you have used up half your energy store, the next half will take 4 times longer, and that may not give you much useful power.

Yes, they track each other though. Hard to do the wholesale selling price as there are too many variables for each installation, but as a long terms price check, they are usefull.

Model a 'cartoon' store i.e. basic shape and whole number dimensions. Then get working on a spreadsheet. Always pick the worse numbers, rather than the most likely.

We do have a fairly good idea. https://www.gov.uk/government/publications/contracts-for-difference-cfd-allocation-round-4-results/contracts-for-difference-cfd-allocation-round-4-results-accessible-webpage Apart from Tidal Stream and floating turbines, I think they are all around $45/MWh. Energy from waste, which still has a fair way to go is coming in at the same price as PV and onshore wind. Natural Gas is now at August 2021 prices, but still volatile. Over the last 40 years, domestic energy prices has been around 5% of median household income, no reason to think it will be much different in the medium to long term. EDF dropped my night rate by 3p/kWh, though the day rate did go up by 8p/kW. ~85% of my usage is at night, with my day usage pretty consistent at 1.3 kWh/day. It may possibly be worth me getting a kWh of storage to run the hob and oven. Or I could stop using the oven as much (used it more in the last year than I did the previous year).

We had a few cold days then, but yes, generally mild.

No. I have been to a couple of local Dragon's Den type events where local businesses are trying to raise money. The ignorance is staggering sometimes. One of the Dragons, someone I know quite well, and does have his head screwed on as he checks concepts with people that do know, likes to see the other investors loose money.

Thermosyphon, big fat pipes and no valves. Heat the lower cylinder first, then it rises to the other ones. With a bit of luck you will get reassuring gurgling sounds.

Yes. Not like when I did my work experience at Pressed Steel Company. There is a reason the exhaust pipes rattled on Rover 200/400. I designed the middle bracket hanger, took me about 45 minutes, then 3 weeks hiding and pretending to be busy.

It's plumbing, only made complicated by plumbers.

MGH Where: M = mass in kg G = gravity 9.81 m/s2 H = height in metres Easy Peasy. Nothing to stop you pumping water up high.

Yes brush up, as it is easy to make an mistake, I do them a lot.

The p means peak, basically the sum of all the panels nominal power. Sometimes you will see a subscript e or t , those mean electrical or thermal. It is easy to have a nominal 4 kWp (actually 16 amps per phase) system fitted as it is, in effect, approved by the local DNO, so if you have 3 phase, easy to have 12 kWp. Too have 16 kWp fitted will require special permission (G99). There are ways around this by limiting exports to 16A, but then, and assuming you go for an MCS installation, you are limited on how much you can get paid. With a larger array of modules (that just means lots of panels) you will be generating more than you can use most of the time, so export payment is worthwhile. Large storage seems a good idea, but if it is too large, then the storage temperature will be lower than optimal most of the time. Why I think 2 or 3 smaller storage cylinders is better than 1 of same volume. A 300 litre cylinder can shower a family of 4 if they are sensible, or one feckless teenage girl with long hair.

I have worked with chefs that can't spell, actually I am one of them.

You had seals on a Triumph, my Dolly had moss.

Putting my bio-hazard suit on next time I am Up Norf.

Or, give us more than the value of the assets and we will return you a small part of it. I sometimes think that the people that run these schemes don't know what they are doing, rather than actively trying to rob people.