Heating: what does the hydrogen strategy say? In short, it's all about trials for the next decade but delaying action on heat pumps and heat networks 'could prevent us from meeting near term carbon budgets' (thread).
First up, some confusion about how many homes will actually be heated by hydrogen by 2030. The press release says 3 million by 2030, the actual document says something very different: (very odd).
In terms of volumes, by 2030 growth in domestic use is limited to the trial places so quite small. Note huge uncertainty over 2035 range. Basically this is 'we don't know'.
In terms of trials: neighbourhood trial by 2023 (Fife, new pipes, SGN), village trial using existing network by 2025 (TBD) and then: 'By 2025 we will also develop plans for a possible hydrogen heated town before the
end of the decade.'
A consultation appears to be upcoming on the potential for 'hydrogen ready' boilers from 2026.
Also put 2026 in your diaries. That is when a 'decision' on hydrogen heating is expected to be made. Neat tweet from @MLiebreich here on strategic thoughts
Overall, very little new in here for heating but good to have this in the public domain (once the hyperlink is sorted). Perhaps the most important statement is: 'Our forthcoming Heat and Buildings Strategy will set out how we plan to decarbonise heat in
buildings in the UK'

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More from @heatpolicyrich

20 Aug
The UK hydrogen strategy outlined the government's support for a 'twin track' approach which supports both 'green' (from renewable electricity) and 'blue' (from fossil gas) hydrogen. This has caused a bit of stir, so what are the issues? (thread).
So firstly, why blue? Well it appears to be linked to a corporate strategy, and it appears to have stuck!
So what is it? Well 'blue' hydrogen is produced from fossil gas in a process in which the resulting carbon is captured and stored (i.e. it's Carbon Capture and Storage, CCS). The stored carbon is not expected to reach the atmosphere so has no climate impact.
Read 25 tweets
27 Jul
The absolutely criminal thing about heat decarbonisation/heat transition politics is the total ignorance by policy makers of the value it will bring to the UK. Ignoring the carbon reductions, it will save money and pay for itself through the reductions in gas imports (thread).
Currently GB is very reliant on fossil gas, more than almost all countries apart from the Netherlands. This is because we went big for gas in the 60s and 70s after finding North Sea gas. But that time is over. We now import over 50% of gas and that's expected to increase.
So, we import over half of our gas. In 2019 that equated to 518 terawatt hours.
Read 10 tweets
24 Sep 20
I think I've now managed to digest all the Times pieces today (I was featured in one of them) and thought I should set out my stall in a short thread. So, last week The Times featured an 'opinion piece' suggesting No 10 were very interested in hydrogen:
I was interviewed following the submission of a letter to the editor, not from me, but from another academic. csrf.ac.uk/2020/09/letter…. A shortened version of this letter featured today.
The Times also ran a story on the letter and which included a quote from me: thetimes.co.uk/article/fossil…
Read 10 tweets
20 Aug 20
I have a new article in the journal 'Environmental Innovation and Societal Transitions' which has been in the making for a number of years.

It wouldn't have been possible without cross-institutional support and wider expertise around the characteristics of 'low carbon gas'.
Focusing on the issue of incumbency, we investigate the emergence of a low carbon gas coalition in the UK. We investigate what the coalition has been doing and the messages it has been promoting primarily through political lobbying and policy engagement.
Converting the gas grid to low carbon gas is presented as *the* option for heat decarbonisation in areas with a gas grid at the expense of other options such as heat networks and heat pumps.
Read 7 tweets
16 Aug 20
Don't know about you, but I've spent the morning creating UK emission trajectories for heat. That shaded bit is the cumulative emissions of not acting. The lower line is an emissions trajectory based on heat pump deployment (1/4). Image
Basically the point is, morally we need to act now, it's not just about net zero but the time taken on the journey to get there. Hence, rapidly deploy energy efficiency, heat pumps and heat networks at scale. Not enough time to wait to see what hydrogen might be able to do (2/4)
We can always change course back to H2 later (if we wanted and after we learn more) but there isn't time for delay for potential options and known technologies reduce emissions now (3/4).
Read 4 tweets
14 Aug 20
There's a real humdinger of a statement in the report behind this claim which assumes that hydrogen is *the* technology for existing homes (1/5). You ready?
'However, electric technologies such as heat pumps are
unlikely to be able to meet the elevated heat demand requirements of the existing housing stock. We have therefore assumed hydrogen will be used to
decarbonise this existing housing stock.' (2/5).
Further in: 'However, we have assumed electrification is not
suitable for older housing stock based on Element Energy and E4Tech’s Cost Analysis of Future Heat Infrastructure report which states: (3/5)
Read 6 tweets

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