[Bored chemist]

Or 27% if you look at the actual figures in the previous paragraph.

The previous paragraph says "Key headlines
In Quarter 2 2021, renewable electricity generation was 26.9 TWh, the lowest value since Quarter 2 2019,
and 9.6 per cent lower than the same quarter in 2020.
The growth rate of renewable capacity remains muted, with 134 MW added over the quarter. During the last
twelve months, capacity grew by 1.4 per cent (681 MW), most of which was in wind (both onshore and
offshore) and Solar PV"
And the problem here isn't government stats, but your apparent inability to read.
It's got nothing much to do with electrolysis- which, you may remember, you screwed up about anyway.

Maybe a passing mod can split this off.

However you look at it, we are still a long way from delivering 75 GW of electricity continuously from renewables

The clever bit is that we don't need to.

That's the point of the focus on heat pumps.
As you said, most of our energy is used heating stuff. We can cut a big chunk out of that .

[alancalverd]

Not sure if you've ever used a heat pump to melt steel, make bricks,  cement, or toilets,  or even sterilise surgical linenware, but I can tell you from painful experience that they aren't all that reliable at 30 degrees, never mind 100 or 2000. Nor much use for cooking. And we burned a fair bit of fossil fuel building and installing the last one I worked with. Like we had to strip out all the old radiators, rip up the concrete floor, install a whole load of plastic insulation, lay some plastic pipes, cover them with concrete, and make a new floor. Just for one single-storey barn. If your building has wooden upper floors, I guess you'd need to strengthen the beams with steel to support the concrete, and pay the Russians and Saudis for the privilege of using their precious natural resources to do so.   

[Bored chemist]

Not sure if you've ever used a heat pump to melt steel, make bricks,  cement, or toilets,  or even sterilise surgical linenware, but I can tell you from painful experience that they aren't all that reliable at 30 degrees, never mind 100 or 2000. Nor much use for cooking. And we burned a fair bit of fossil fuel building and installing the last one I worked with. Like we had to strip out all the old radiators, rip up the concrete floor, install a whole load of plastic insulation, lay some plastic pipes, cover them with concrete, and make a new floor. Just for one single-storey barn. If your building has wooden upper floors, I guess you'd need to strengthen the beams with steel to support the concrete, and pay the Russians and Saudis for the privilege of using their precious natural resources to do so.   

OK, so which part of "

We can cut a big chunk out of that .

did you not understand?

[wolfekeeper]

Problem is that we have no control over wind speed and sun hours.

Yeah, and the problem with petrol is that we have no control of the price or availability in fact.

IF ONLY we had a type of vehicle with a large battery with a couple of hundred mile range or so that could store solar and wind power for multiple days when it's available and use that to drive around in.

[alancalverd]

OK, so which part of "
Quote from: Bored chemist on 13/11/2021 17:50:10
We can cut a big chunk out of that .
did you not understand?

Your use of "big".

[alancalverd]

IF ONLY we had a type of vehicle with a large battery with a couple of hundred mile range or so that could store solar and wind power for multiple days when it's available and use that to drive around in.

That would be great, if we had enough fossil fuel to make it, enough potential solar and wind energy to run it, and some way of dealing with the CO2 emitted during its manufacture. Damn physics keeps getting in the way.

[hamdani yusuf]

IF ONLY we had a type of vehicle with a large battery with a couple of hundred mile range or so that could store solar and wind power for multiple days when it's available and use that to drive around in.

That would be great, if we had enough fossil fuel to make it, enough potential solar and wind energy to run it, and some way of dealing with the CO2 emitted during its manufacture. Damn physics keeps getting in the way.

Why do you think that they can't be done? Which physics prevent them from happening?

[alancalverd]

Conservation of energy. Mean solar input.

Actually it's not physics (solar airplanes have flown around the world, solar-powered cars have crossed Australia, people have been crossing the oceans in sustainable boats powered by wind for thousands of years...) but engineering: we can't make enough to satisfy demand. 

[Bored chemist]

Damn physics keeps getting in the way.

Which physics prevent them from happening?

Actually it's not physics