SteamyTea

I hope not, I am on target to use 3 MWh this year (still under 2 MWh just). My mean price is currently 22p/kWh, so £666 for usage (before meter rental and VAT) Take away the £550 that the government have promised (spent the £150 already on new secondary glazing), my usage should cost around £120 this year and heading into next year a bit. That begs the question, if I do not use enough, will I not be able to get the full £400? Shall just have to up my meter reading to get it, £66 a month will not look to unusual.

To make the sums simple, let us say that the 9.5 kWh system can reliably deliver up to 7 kWh and it will last 10 years. So that is £1000/kWh installed, or, over the lifetime, 4p kWh delivered. Now if you import energy to charge the battery, you have to add the 4p to the kWh price i.e. 20p/kWh on E7, so a total of 24p. If you use your PV, you really need to work out what each kWh it generates costs you. So say your system costs £1000/kWp and each kWp yields 1,000 kWh/year and your system lasts 10 years. Each kWh of electricity costs you 10p. So if used via the batteries, 14p/kWh. The mean price if half is imported at 20p/kWh and half PV generated at 14p/kWh is, once the costs of the batteries is included, works out at 19p/kWh. So up to £1.33/day. That is a mean price, it will vary during the year, winter it will be closer to the higher price of 24p/kWh, summer, no use at all. Now none of that really helps you much as it does not take into account your usage patterns and your generation profile. You may use a lot of electricity in the evenings, in the winter, and very little during the day. Work out your usage patterns (get reading that meter 4 times a day or make a logger) and though PVGIS work out your hourly generation profile. Then see how they match up. Also, consider fitting a storage heater connected to a PV diverter (I assume you already have one for your DHW). One or 2 1.5 kW/10.5 kWh storage heaters can save you a bit on space heating (stick them where they are useful, not out of the way). No use in summer, but the rest of the year it will be useful, sometimes. I don't know what car you drive, or how many miles you drive it, but a more economical car will almost certainly save you more.

No one, apart from the manufactures, actually test the efficiency of their boilers once installed. I would think that overall, 80% is towards the upper limit.

Most of the energy is used keeping goods cool, not the air. The air in a fridge is a few tens of grams, with a SHC of 1. Just a litre of water, mass 1kg and a SHC of 4.2 will swamp the 'noise' of door opening.

We had that last general election. Place went all Tory. They still think Margret Thatcher is the bees knees, even though it was coming on for 50 years ago she took over the Tory party.

Last week. There is Trevithick to add to the list. And Humphrey Davy. And, more up to date, Mick Fleetwood is from here. Redruth, just like Kristin Scott Thomas.

Auto correct, not that I know where Corneal is

Is it a large loop, how will it cope with just 4 or 500 W of demand?

Depends how you class Maybe we should class people by mass. Not sure the mass should be inverted or not. One very fat person could be the same as 3 normal people.

Corneal has lithium in abundance. No good Chinese restaurants though.

About 3 times my usage. Now I know I live alone, but I don't have a third of a fridge, or cooker, or even a third of a water tank. I also don't have a heat pump.

All I have heard for the last 7. Still not seen hell in a hand cart.

Well, my shoes, they come from Singapore My flashlight's from Taiwan My tablecloth's from Malaysia My belt buckle's from the Amazon You know, this shirt I wear comes from the Philippines And the car I drive is a Chevrolet It was put together down in Argentina By a guy making thirty cents a day Well, it's sundown on the union And what's made in the USA Sure was a good idea 'Til greed got in the way Well, this silk dress is from Hong Kong And the pearls are from Japan Well, the dog collar's from India And the flower pot's from Pakistan All the furniture it said 'Made in Brazil' Where a woman, she slaved for sure Bringing home thirty cents a day to a family of twelve You know, that's a lot of money to her Well, it's sundown on the union And what's made in the USA Sure was a good idea 'Til greed got in the way Well, you know lots of people are complaining that there is no work I say, "Why you say that for When nothing you got is US made?" They don't make nothing here no more You know, capitalism is above the law I say, "It don't count 'less it sells" When it costs too much to build it at home You just build it cheaper someplace else Well, it's sundown on the union And what's made in the USA Sure was a good idea 'Til greed got in the way Well, the job that you used to have They gave it to somebody down in El Salvador The unions are big business, friend And they're going out like a dinosaur But they used to grow food in Kansas Now they grow it on the moon and eat it raw I can see the day coming when even your home garden Is gonna be against the law Well, it's sundown on the union And what's made in the USA Sure was a good idea 'Til greed got in the way Democracy don't rule the world You better get that in your head This world is ruled by violence But I guess that's better left unsaid From Broadway to the Milky Way That's a lot of territory indeed And a man's gonna do what he has to do When he's got a hungry mouth to feed Well, it' sundown on the union And what's made in the USA Sure was a good idea 'Til greed got in the way

On today's Life Scientific there was some American saying the science is easy, it is people that are hard.

Can I come and break them in Sunday?

Was 10p/kWh in the early 1990s. A small EU made car was 7k then, about 15k now. A pint was 1.50, now 4. A basic desktop PC 1500, now about 350. My neighbours house was in Aylesbury, 38k now and over 250k. Bank rate about 8% now 2%. Very hard to compare prices we all have different spending patterns and priorities. Why would you pump it. Making on sight would be easier.

The Archers? The Curios Cases of Rutherford & Fry.

That has to be done as well. But for the next 6 months we have to support the retailers. Except we have legislation and international commitments. Still, at least I will be able to look at Grade 3 and 4 farmland without it being totally coveted in solar panels. Not sure if anyone has told Fizzy Lizzy that it won't be covered in food crops either. Just rock, gorse and muddy now the rain has started.

The 18 kg panel, plus wind loading. Does this mate have a spiderman suit?

Get a couple of spare modules as well.

Have you fitted a module. Easy enough to fit as you can brace against the rail. Once fitted the rail is covered.

We are the experts, @Onoff and I. Do you like bean and potatoes mash? I can donate a succulent cutting I steal from the sub tropical garden, and an echium that grew from bird poo.

Half the time they produce nothing, then half of the remains time they produce less that 100W, half again, between 100W, but below 200W. So while it is true to say you get less maximum power, you probably get a lot more energy oversizing. If you store that energy, you can design to draw more power via other methods.

That is the difference, Nod's wife built the shed/garage/workshop.

Can't you get pressure activated valves. https://www.norgren.com/uk/en/list/fluid-control-valves/pressure-operated-valves?refine=port-size-over-portsg1forwardslash4 I seem to remember they had them dotted all over the oil refineries I used to play on as a kid.