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David Joffe

@davidjoffe

Expert adviser, Clean Power Unit, DESNZ. Visiting Prof @ CEP, Strathclyde. Ex CCC Head of Net Zero; RAEng. Opinions mine unless someone else’s. Joffe rhymes with coffee. #COYS

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24.10.2023
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Latest posts by David Joffe @davidjoffe

Happy Simon Evans day to all who celebrate 🎈

05.03.2026 18:15 👍 12 🔁 0 💬 0 📌 0
Positions 7-20 in the PL table

Positions 7-20 in the PL table

Four of the #PL bottom 8 have been, and still remain, in European competition this season.

Meanwhile, none of those in positions 7-12 have had European football.

#analysis

01.03.2026 16:04 👍 0 🔁 0 💬 0 📌 0

I don’t think we’re ready for Gray at LWB

01.03.2026 13:17 👍 0 🔁 0 💬 0 📌 0

Souza is right there…

01.03.2026 12:59 👍 0 🔁 0 💬 1 📌 0

Mine is to be delivered today, a week and a half after they received my old one

26.02.2026 12:32 👍 0 🔁 0 💬 0 📌 0
Preview
Chris Stark: The economics of clean energy ‘just get better and better’ - Carbon Brief Chris Stark is head of the UK government’s “mission” to deliver clean power by 2030

NEW – Chris Stark: The economics of clean energy ‘just get better and better’ | @drsimevans.carbonbrief.org @chrisstark.bsky.social

Read here: buff.ly/5MhSfXQ

17.02.2026 16:48 👍 41 🔁 22 💬 2 📌 2

I think LinkedIn might be the only place on the internet where the widespread and unstoppable spread of machine generated text has made zero noticeable difference to anything

15.02.2026 21:13 👍 312 🔁 53 💬 10 📌 4
Preview
Britain needs to think beyond net zero, says UN climate scientist Machines that suck carbon dioxide from the atmosphere could help reduce global warming, but Jim Skea believes breaching the 1.5C limit is ‘inevitable’

Britain needs to think beyond net zero and discuss what it does about tackling the "overshoot" of the world's 1.5C goal, says Jim Skea, chair of the IPCC

Interview here, including what he thinks about the US quittig the IPCC:
www.thetimes.com/uk/environme...

11.02.2026 15:57 👍 8 🔁 6 💬 2 📌 0

Even in such an underperforming team, he’s been arguably the worst performer

09.02.2026 13:39 👍 0 🔁 0 💬 0 📌 0

Could be Gray in midfield and Palhinha as defensive RB in the 4-2-3-1? Potential to change shape within game without changing personnel, which is interesting…

07.02.2026 12:18 👍 1 🔁 0 💬 0 📌 0

Think it’s a mistake to omit Bissouma

06.02.2026 10:14 👍 2 🔁 0 💬 1 📌 0

Think maybe we’re planning to replace both Frank & Lange, so spending big this window didn’t make sense from that perspective

03.02.2026 00:04 👍 3 🔁 0 💬 0 📌 0
Monthly passenger EV and petrol car registrations in the EU from January to December 2025. Source: ACEA.

Monthly passenger EV and petrol car registrations in the EU from January to December 2025. Source: ACEA.

NEW – Analysis: EVs just outsold petrol cars in EU for first time ever | @mollylempriere.carbonbrief.org

Read here: buff.ly/5g3BVAp

27.01.2026 14:45 👍 83 🔁 36 💬 2 📌 9
Preview
Warm Homes Plan This plan sets out how we will cut energy bills and upgrade homes.

The full Warm Homes Plan is now out. It's a 152 page whopper...

www.gov.uk/government/p...

21.01.2026 11:01 👍 12 🔁 4 💬 0 📌 1
Post image

NEW Q&A: What UK’s record auction for offshore wind REALLY means for bills and clean power by 2030

In which Molly Lempriere and I dig into the details in search of nuanced answers, while knocking some of the most misleading commentary on the head

www.carbonbrief.org/...

15.01.2026 15:02 👍 25 🔁 10 💬 1 📌 0

There does seem to be at least a causal mechanism: we keep a lot of bodies deeper, inside the box, rather than pressuring the shooters quickly. Not saying it’s all that, though - probably variance on top

15.01.2026 08:30 👍 1 🔁 0 💬 1 📌 0
Preview
Offshore windfarm contracts to fuel 12m homes in Great Britain after record auction Subsidies guaranteeing price for each unit of clean electricity generated given to 12 renewables projects

Good set of results on offshore wind auction contracts – the DESNZ team should be praised for balancing the need to deliver a lot of new capacity with the need to keep prices down www.theguardian.com/environment/...

14.01.2026 09:28 👍 18 🔁 7 💬 1 📌 0
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BREAKING: UK govt secures record 8.4GW of offshore wind at AR7 auction round, for average £91/MWh (England) / £89/MWh (Scotland), roughly a fifth below the price limit

www.gov.uk/governmen...

14.01.2026 07:20 👍 174 🔁 47 💬 6 📌 4

1/ Some wild numbers have been used in the media this week for “the cost of net zero”.

Reports have said that net zero will “cost” £4.5 trillion, £7.6 trillion – the list goes on.

None of these are the cost of net zero – a quick explainer 🧵 on why

13.01.2026 19:32 👍 40 🔁 23 💬 2 📌 2

That’s all of them

10.01.2026 23:35 👍 2 🔁 0 💬 0 📌 0

Yes, videos here please - directly and/or links to YouTube

08.01.2026 20:45 👍 1 🔁 0 💬 0 📌 0

Does glut = low(er) prices?

06.01.2026 20:08 👍 0 🔁 0 💬 1 📌 0

Simons at 10, ahead of Bentinha, has already been used on multiple occasions this season - vs Leeds and Villa at least…

20.12.2025 14:14 👍 0 🔁 0 💬 0 📌 0
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19.12.2025 15:28 👍 0 🔁 0 💬 0 📌 0

Does this mean Brown leaving in Jan is plausible?

18.12.2025 17:36 👍 0 🔁 0 💬 1 📌 0

This could get… dangerous

17.12.2025 21:34 👍 0 🔁 0 💬 0 📌 0

Dishwasher > coffee machine for me (but then we make our coffee on the hob…)

16.12.2025 13:02 👍 1 🔁 0 💬 1 📌 0

You mean American soccer, right?

15.12.2025 15:03 👍 1 🔁 0 💬 0 📌 0

What’s your definition of actual fans?

11.12.2025 17:59 👍 1 🔁 0 💬 1 📌 0

Huh. In my mind, by 2019 we’d already got to well below 250 g/kWh, and it continued falling thereafter. I don’t see how the average is even 300 for that period.

Maybe it factors in upstream emissions or net imports in some way…?

11.12.2025 16:47 👍 0 🔁 0 💬 1 📌 0