Andrew Montford Profile picture
Lukewarmer, libertarian, author of The Hockey Stick Illusion. Director @netzerowatch. Personal views.
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Mar 19 10 tweets 3 min read
In the FT, @pilitaclark attempts to diagnose the reasons behind increases in electricity bills. Unfortunately, she has got this badly wrong, mainly because she only looks at the wholesale price. (THREAD) Image It is true that the wholesale price is the biggest component of electricity bills. Here's a breakdown of a bill... Image
Feb 26 5 tweets 2 min read
The Climate Change Committee has launched the latest Carbon Budget today. As usual, it doesn't rise above the level of pure fantasy. (THREAD) Image The Committee reckons we are going to have to increase annual spending on Net Zero stuff from around £16bn today to £40bn or more in 2029, sustaining that level of expenditure for a decade. Image
Jan 31 11 tweets 2 min read
I have uncovered new data showing that Whitehall figures on offshore windfarm output are baloney. (THREAD) Image For many years, DESNZ has claimed that offshore windfarms commissioning in 2025 will deliver a lifetime average of 61% of its nameplate capacity ('a capacity factor of 61%')
Jan 8 20 tweets 3 min read
Time after time, I come across people saying that it’s madness that everyone in the electricity market receives the same price as the most expensive generator to run (typically a gas-fired power station). Here's why this is necessary.

(THREAD) Image Consider a grid with three kinds of generator:
·         offshore windfarms
·         new, efficient gas-fired power stations
·         old, inefficient gas-fired power stations.
Dec 19, 2024 14 tweets 3 min read
The huge cost of paying windfarms to switch off – so-called constraint payments – hits the headlines from time to time. It’s a scandal, of course, but it’s even more scandalous than you think (THREAD). Image The main grid constraint is across the Scottish border. The windfarms that are getting the big money for switching off are therefore north of the border.
Dec 1, 2024 19 tweets 4 min read
As the CPS’s @rcolvile has set out, @NESO has produced a veritable dodgy dossier to support Ed Miliband’s plans to decarbonise the grid by 2030. But the scale of the deception Colvile has uncovered is only the tip of the iceberg. (THREAD) Image The public have been deceived on an extraordinary scale, and Mr Miliband’s department has been at the centre of it. That’s because almost everyone in the field uses DESNZ’s estimates of the cost of renewables.
Nov 29, 2024 7 tweets 1 min read
With the government having announced subsidies for hydrogen for industrial heat, we will see a lot of this kind of thing. But the underlying agenda is not what you think. (THREAD) Image The new regime for hydrogen guarantees a price of 24p/kWh. This covers the costs of the electrolysers, which would otherwise be able to compete with natural gas at 8p/kWh.
Nov 18, 2024 11 tweets 2 min read
At the Climate COP, the Prime Minister announced a new subsidy for windfarms. This is yet another scandal. (THREAD) Image The Clean Industry Bonus (a rebranding of a plan put together under the last government) hands out cash to windfarms that say they will develop UK supply chains. The rewards are substantial - £27 million per megawatt of capacity.
Oct 31, 2024 17 tweets 4 min read
A few weeks back I wrote a long thread about overproduction in the renewables sector, and some murkiness surrounding the responses to the problem. It has now become very murky indeed. (THREAD) Image In 2023, the renewables fleet started to overproduce from time to time. When both solar and wind were producing at high levels, supply outstripped demand and market prices crashed, as everyone tried to offload their surpluses.
Oct 28, 2024 10 tweets 2 min read
One of the hidden horrors of Net Zero is the need to pay out very large sums of money for things that were previously free. A recent Government data release reveals an eye-watering case in point. (THREAD) Image Back in the olden days, coal fired power stations naturally stabilised the grid. Huge rotating turbines essentially acted as a store of energy – ‘inertia’ in the jargon.
Oct 21, 2024 8 tweets 2 min read
Last week, I noted important new evidence that official estimates of the cost of offshore wind are wildly incorrect, and that Net Zero will therefore be much more expensive than thought. This week, there is more. (THREAD) Image Link here in case you missed it.
Oct 16, 2024 8 tweets 2 min read
Claims that Net Zero can be done cheaply all have, at their centre, the same wild prediction. I have just had new evidence that it is completely incorrect. (THREAD) Image All these claims cite the prediction of the Department of Energy Security and Net Zero (DESNZ) that offshore windfarms commissioned in 2025 will be extraordinarily cheap, delivering power at £44/MWh, half current market prices.
gov.uk/government/pub…
Sep 24, 2024 19 tweets 3 min read
If you think things are crazy now, wait until you hear how bonkers they are likely to become. (THREAD) Image From time to time, the renewables fleet is now generating more electricity than the country needs. When this happens, market prices collapse, and sometimes even go negative.
Jul 22, 2024 12 tweets 3 min read
Last week, I looked at some of the implications of Ed Miliband’s mad plan to expand the renewables fleet. I’ve now taken the analysis further to see what it might mean for household bills and the rest of Mr Miliband’s plans. This is rather startling. (THREAD). Image (The link to the original post is here, for those that missed it).
Jul 19, 2024 7 tweets 2 min read
It's fun to look at what electricity supply and demand will look like once Labour's bonkers energy plan - double onshore wind, triple solar, quadruple offshore - is in place. (Thread) Image I've crudely estimated the Labour Party fleet as 90GW of wind, 42GW solar, plus 6GW nuclear, and assumed a modest rise in demand to 330TWh.
Jul 1, 2024 10 tweets 2 min read
In this thread, I will try to explain why electricity is going to get much *much* more expensive. Image As I’ve said before, there is evidence of some cost reductions for offshore wind – Hornsea 2 and Triton Knoll are the first developments that might have costs below £100/MWh.
Jun 22, 2024 11 tweets 2 min read
Two different figures are bandied about for the cost of Net Zero. There are a lot of misunderstandings of what they represent. In fact, they are not even comparable. But it doesn’t matter because they are both junk. Here’s why. (Thread) Image The two estimates are £1.5 trillion from the Climate Change Committee and £3 trillion from National Grid ESO.
Jun 5, 2024 11 tweets 1 min read
From @RossjournoClark, I learn that @Policy_Exchange and @AuroraER_Oxford are claiming Labour's energy plans will cost £116 billion by 2030.

The number is preposterous. Here's why (thread). Image It’s straightforward to calculate that Labour’s plans involve building 40GW offshore windfarms, 20GW onshore plus 36 GW of solar.
May 22, 2024 9 tweets 2 min read
In a week where we have heard about the terrible human cost of the Government machine covering up the use of contaminated blood, it’s interesting to consider Whitehall doing exactly the same thing - hiding the painful truth - in another area. (Thread....) Image This is the claim that offshore wind power is cheap.

It simply isn’t true.
Apr 27, 2024 6 tweets 1 min read
Electricity storage thread

@afneil is being bombarded with every misconception about the energy system out there, as people remonstrate against his simple factual observation that we need something to deliver power when the wind doesn't blow. Pumped hydro doesn't cut it. There are not enough suitable sites. National Grid concluded that we could quintuple capacity. That would represent just a few hours of demand.
Sep 6, 2023 5 tweets 1 min read
So about these alleged subsidies for fossil fuels…

1. Oil and gas companies have to pay the Supplementary Charge on profits, as well as Corporation Tax.
Renewables companies don’t... 🧵 Image 2. Gas, coal and oil-fired power stations have to buy Emissions Trading Permits, and renewables don’t.
3. Renewables get direct subsidies in the shape of the Renewables Obligation, Feed-in-Tariffs and Contracts for Difference. Fossil fuel power stations don’t....