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Alan Clarke

@alanclarke

Energy & buildings engineer, Passivhaus, mountain biker, veg gardener/rewilder

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01.11.2023
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Latest posts by Alan Clarke @alanclarke

move slow and repair things

06.03.2026 12:06 ๐Ÿ‘ 3750 ๐Ÿ” 1214 ๐Ÿ’ฌ 5 ๐Ÿ“Œ 0

Is this "damming with faint praise" type of funding?

Easier to spend a few euros than actually come out and say nuclear isn't happening?

10.03.2026 22:07 ๐Ÿ‘ 6 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Irregular reminder that heat pumps work in old buildings - this is our local cinema, built in 1910, not insulated - but now warm thanks to air-air heat pumps

11.02.2026 21:07 ๐Ÿ‘ 10 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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My first EV:

10.03.2026 10:36 ๐Ÿ‘ 11 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

seems to be about 7$ for US gal in UK at mo, if you're still on obsolete combustion motor tech - same utility as about 10 kWh in your battery, about $1.20 if charging at home on a UK EV tariff

10.03.2026 08:40 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
elec cargo bike with "EV" sticker on battery box

elec cargo bike with "EV" sticker on battery box

2 wheeled EV:

09.03.2026 22:20 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I'd be pleasantly surprised if we could fit heat pumps fast enough for this to be a problem - given speed and scale possible with wind and solar I think full speed ahead on heat pumps too - and anyway they still heat from gas via CCGT more efficiently than boilers

09.03.2026 20:55 ๐Ÿ‘ 9 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

And all I want is #AbolishThePatriarchy ๐Ÿซ 

05.03.2026 09:30 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Why would anyone spend time generating this? I dont think its even AI
(Chainstays have an important job - I dont recommend you saw them off your bike to save weight!)

05.03.2026 10:30 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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๐Ÿ™Œ52 new Passivhaus/ PHI LEB homes for Somerset!

Greengauge was Passivhaus Consultant & M&E Designer on Nailsea social housing development, led by N. Somerset Council & Stonewood Homes.

44 homes certified @ Passivhaus Classic/ Plus
8 homes certified @ PHI LEB

ggbec.co.uk/portfoli...

05.03.2026 07:00 ๐Ÿ‘ 14 ๐Ÿ” 6 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 0

Are the LEB built to same spec as the PH?

05.03.2026 08:13 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Passivhaus Retrofit Case Study Series | Stretford EnerPHit Retrofit
Passivhaus Retrofit Case Study Series | Stretford EnerPHit Retrofit YouTube video by Passivhaus Trust

If you liked Guy Martin's House Without Bills, architect Hannah Dixon / Progress in Practice and the builder Josh Day / Mysza Group take a deep dive into this EnerPHit retrofit project

From the @passivhaustrust.bsky.social Retrofit Case Study Series

www.youtube.com/watch?v=LgY2...

04.03.2026 18:37 ๐Ÿ‘ 20 ๐Ÿ” 11 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Apropos of nothing in particular, just resharing this chart showing why North Sea gas is drying up (we burned it all already)

12.06.2025 14:57 ๐Ÿ‘ 125 ๐Ÿ” 52 ๐Ÿ’ฌ 6 ๐Ÿ“Œ 12

I hoped the combined fcu+cylinder (multi+) system would be good for PH but came with too small a cylinder compared with the space heat output and compressor size - overpowered for small PH, not enough hot water for big one

04.03.2026 12:05 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Or an earnings cut if you can't put prices up 20%

02.03.2026 19:26 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

UK has 1.86 million (according to zapmap - I was just curious to see the comparison)

02.03.2026 16:08 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Honestly the collective national level of disdain for Brits living in Dubai on all my social media platforms today really is bringing the UK together as one in a way that's hard to achieve in the modern era.

02.03.2026 11:08 ๐Ÿ‘ 4602 ๐Ÿ” 759 ๐Ÿ’ฌ 89 ๐Ÿ“Œ 54

Does the analysis show bias in mating, or difference in fertility of hybrid offspring depending on species of mother&father?

28.02.2026 23:12 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

The current argument of the British right is that Muslims turned out in "blocs" with "family voting" to cast their ballots for a party led by a gay Jewish man, and this shows that multiculturalism has failed, voting is "sectarian" and we are in a crisis.

Hmmmmmm.

27.02.2026 12:55 ๐Ÿ‘ 2065 ๐Ÿ” 514 ๐Ÿ’ฌ 77 ๐Ÿ“Œ 34

Yes, about time plumbers were represented in the commons!

27.02.2026 16:26 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Map appears to be showing largest single source - for GB gas is only fossil source - wind solar and hydro combined are more, and with nuclear make majority non-fossil

27.02.2026 15:33 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

We used a borate woodworm preventative treatment 20 yrs ago on some new oak which is now showing plenty of woodworm holes
I dont have confidence it would work any better in sheepswool

24.02.2026 10:33 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Speaking on behalf of the moth population I think it's great

23.02.2026 12:51 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

That's my experience - last week I repaired my elderly pc with used parts as full replacement extortionate.

Also means I didnt need to pay microsoft the new pc windows tax, so they have a bit less to spend on AI

21.02.2026 09:18 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

This looks logical enough - till you ralise there's actually a bloody great hole full of mud and water, untraversably bisecting the blue half ๐Ÿคฏ

Map *actually* looks like this

18.02.2026 20:23 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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SUR RON ULTRA BEE T 2025 ROAD LEGAL The 2025 Surron Ultra Bee HP Dominate any terrain with the 2025 Surron Ultra Bee HP, a revolutionary electric trail bike engineered for ultimate performance. This 88.5kg powerhouse packs a blistering ...

That looks like the basic principle, but there is a road legal spec go-off-roadbarnsley.co.uk/products/sur...
21 kW & 0-50 km/h in 2 secs looks quite fun

17.02.2026 22:11 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I'm with you on that - I generally advise people that they just need a standard ASHP - they're available in stock, reasonably priced, and it's not hard to find an installer in who knows how to fit them

17.02.2026 12:00 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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London gangs recruit children on Snapchat to steal iPhones for ยฃ380 The Metropolitan police is deploying drones and ebikes to help catch adolescent phone thieves

Looking at these ebikes in pic I don't think the police are limited to 15mph here - would it be helpful to call them electric motorbikes? (can see motorebike helmet, I assume they are legally motorbikes)

17.02.2026 11:27 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Preview
The smart home counter-revolution has begun It started with a cute lost puppy.

Owners of Ring doorbells are being advised to smash them to splinters after a commercial showed how they could be used to surveil and identify humans with AI. Super Bowl LX may be remembered as the start of a counter-revolution against the technology. lloydalter.substack.com/p/the-smart-...

16.02.2026 12:09 ๐Ÿ‘ 34 ๐Ÿ” 15 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Two pc motherboards on desk

Two pc motherboards on desk

Another AI side-effect - computer chip prices have doubled! Motherboard on my PC just failed. RAM not compatible with new one so bothering to replace with 2nd hand from ebay (to save about ยฃ800 - also reflecting only performance upgrade I need is for it to work reliably)

17.02.2026 09:19 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0