SteamyTea

Does that not include energy prices then. China buys in a lot of coal and gas from Australia and Russia. A lot of other things can be done too, export guarantees, government subsidies, different employment standards, pension payments (good reason to not limit population). If life was as simple as just taxing and subsiding the bad and good, then we would have sorted this back in Roman times. Just not as simple as we like to think.

Good old Tom

No it isn't. The Earth can easily support 3 billion more people. Been shown in so many studies. Not just the cost of energy is it. As an example from the automotive world. Tesla started work on a new Chinese factory back in February. They hope to make cars in it come this December. The UK would not even get a planning decision is that timescale. Plus they have a well educated and skilled workforce.

Do ground mounted systems

Not if the developed world keeps using the up supply of renewable technologies. What you have done there is to look at one metric, CO2/Nation. How about looking at CO2/Land Area, or CO2/GDP, or CO2/Goods Export Value. In a globalised world, something that many do not like apparently, it is wrong to compare at a national level when we buy in the goods they make.

As for the economic arguments, they tend to be way off the mark as people seem to look only at the cash side of it. There are 3 pillars to environmental economics, financial, environmental and social. It is impossible to get they all to balance. Once that is accepted, game theory can be used to get the least worse option. This casts a very large net across the planet. Most people accept that burning coal to generate electricity is not a good thing, and with current technology, probably unnecessary now. But I don't want to be the person, or government, that denies Sub-Sahara Africans an improvement in life because the Developed Nations have nicked all the resources. Climate change, environmental pollution and poverty are a global problem so we have to be equitable about it. It seems odd that we are now, in the UK, trying to use as much of our self generation as possible and whinge that we are not getting paid much for exports. Globally we would be better off paying to install a system in a country that has less restrictions, as it is cheaper to do so, and all the generation would be used all the time. But that isn't going to happen anytime soon.

That is it really. I am no fan of regulations, but they are needed. We can't have a free for all when it comes to installing micro-renewables, the local grid was just not designed to handle it. As an example, when I worked for a PV company, we installed 4 systems in the same street. That attracted the attention of the DNO, who warned us that we may be liable for a transformer upgrade. The odd thing is that if 4 different companies had installed the same system, then the DNO was liable for the upgrade. It is also not, as Jeremy points out, just to do with the electrical safety. There is mechanical safety as well. None of us want PV modules falling off roofs in a storm, or a leaky roof for that matter. There is also a certain need to protect ordinary customers. We tend to be out of the ordinary on here, and some if us are capable and qualified to do an install. But my neighbours aren't, so I don't want them thinking they can jump about on the roof, with a drill, fitting a PV system.

Leave your endoscope in there pointing at the lights. Then view on the screen. Or a PiZero with a a camera attached and view on the phone/tablet.

Apart from cleaning any heat sin and vents, what is there to service?

Needs a correction to 0.022 W/m.K This foil board, is that similar to multifoil?

As the plot is already owned by a family member, it is not going anywhere, so no real hurry to build on it. You could, for a laugh, find a suitable, and cheap house, and refurbish it. Or you could wait and see if the value of property crashes and buy up a bargain, cash is king here.

By the time you are ready to start you will have 3 years worth of accounts, probably more.

Like this guy, he uses school kids to catch the sparks. 13:30 in

Probably best to think of these showrooms as art galleries, where the supplier is paying for room space.

How much does an oil tank cost to install from scratch? Also how much room does it take up. (how long is that piece string)

If you are looking purely at a price comparison over a fixed period of time, then an oil burner is possibly the cheapest. That price comparison would vary depending on where in the world you are, your overall energy needs and cost of servicing.

I think I have only had two deliveries from Yodel, both disasters that forced me to have to drive to Truro. They are a delivery company that should not exist.

Few bungalows like that near me, they usually get 'developed' into 2 semi-detatched 3 bed places. But then, my end of the West Country is not the idyllic part that most people think.

Still, it is a nice morning.

Did you offer him a cuppa? I did when I had my shed delivered at about that time.

I had a similar issue with a job. Two identical, large pneumatic couplings. One was a straight though, the other had a hole on the side. The one without the hole cost more, no matter which way I calculated it. Came down to there being more material overall and more labour involved. Charged the customer more money for the cheaper one mind.

well said.

Not how I would do it. Depends on which type of resin you use. You don't have to lay the mat up to each edge. In fact I would not attempt to do that. I would stagger the layers anyway, then same with any joining strips. That way, there would be less of a thickness difference. I would also apply the flow coat/top coat/glaze to 95% of the already laminated area. This top coat is what really keeps the moisture out and is really the hardest to apply properly.

The 'newer' low styrene emission resins that came out about 30 years ago were a revelation. Could abuse them something rotten and seemingly get away with it. My old boss came to work for me on a large project when I was working on site for a couple of months. To save a few quid for the customer he started to use an old, but cheaper polyester resin. The parts lasted a few days in service. Now if anyone wants to buy an osmosis free, high temperature resin system, I still have it for sale. Not cheap, but cheaper than the alternatives. I am still amazed that no one has cottoned on to what I did, especial the boat builders. It did cost me a contract to make wind turbine blades for one of the few large turbine manufacturers back in the early 90's. They are not about anymore.

I think this is the difference between a DIY bodge and a professional service. But I may be biased as I worked in the composite industry for 25 years or so. I still itch.