Aidan Kelly
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helloaidank.bsky.social
Aidan Kelly
@helloaidank.bsky.social
680 followers 2.8K following 110 posts
Data Scientist at Nesta in the Discovery team | Passion for clean energy and all things generative AI | Views are my own. MSc from UvA, PhD in particle physics from UCL.
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Reposted by Aidan Kelly
With the AWS outage, now‘s as good a time as any to post this old strip.
🏛️ Policy trends:
Electricity price reduction is climbing the policy agenda. Recent debate has centred on long-term ways to bring down prices for households and businesses. That’s key to helping heat pumps compete with gas boilers on running costs. (7/7)
This combined heat pumps, community energy storage, EV car clubs and solar panels to cut bills and upfront costs. (6/7)
🔬 Research funding:
UK research has shifted from optimising heat pumps to green finance, mirroring the investment trend.

Example: Rossendale Borough Council received over £2 million for a place-based decarbonisation demonstrator in terraced streets. (5/7)
IKEA: Meatballs, flat-packs and now heat pumps. The company is now offering heat pumps in several European countries, including the UK since late September, through partnerships with manufacturers such as Aira. (4/7)
💡 Venture funding:
Finance for low-carbon heating is getting a green light from investors. Global investment in 2025 rose sharply for businesses offering loans and financial products to support uptake. (3/7)
In this edition, we looked at innovations to make low-carbon heating more affordable, a key barrier in our mission to decarbonise home heating in the UK. (2/7)
Happy to share my first piece of analysis work with the Discovery team at @nestauk.bsky.social on 𝗠𝗶𝘀𝘀𝗶𝗼𝗻 𝗥𝗮𝗱𝗮𝗿!

The Mission Radar is a briefing series on innovation signals and emerging trends in Nesta’s missions. We use AI to scan for innovation across business, academia and policy. (1/7)
What a really interesting conversation between two of my favourite people in AI in the form of @karpathy.bsky.social and @dwarkesh.bsky.social. I wish more ppl in this space took the same approach in terms of being open to debate, challenge and overall being humble.

www.youtube.com/watch?v=lXUZ...
Andrej Karpathy — “We’re summoning ghosts, not building animals”
YouTube video by Dwarkesh Patel
www.youtube.com
Used ChatGPT in study and think mode as well as prompting it to use socratic questioning to really improve my understanding of this area. (5/6)
They've managed to create deterministic LLMs at inference time with some penalties for efficiency, but the results are pretty cool. I found their blog quite a long read, as I had little familiarity around the intricacies of these calculations and how they relate to GPUs. (4/6)
However there are different strategies to get around this, e.g. running sums over single cores in a GPU. This is what 'Thinking Machines' have been doing with implementing batch-invariant calculations for LLMs. (3/6)
This is caused by something called floating point non-associativity. In Maths, we can do (a+b)+c =a+(b+c) but this is not the case when doing calculations in computers, the order matters. (2/6)
So theoretically LLMs can be deterministic if we set their temperature to zero, but in practice they aren't. This comes down to how we do calculations such as matrix multiplication at inference time. It turns out the order you do these calculations in does matter. (1/6)
Does anyone have cool (or boring) agentic use-cases that they've read about or used?

Doing some horizon scanning work to see what's out there but thought my bluesky network might have ideas!
That's what we are building with Nesta's Policy Atlas tool!

Read about our alpha tool user testing and what's next for the project, here: www.nesta.org.uk/project-upda... (2/2)
Harnessing AI to positively disrupt policymaking
Lessons learned from our user research
www.nesta.org.uk
What if there was an AI-powered tool that allowed policymakers to rapidly identify the most effective policies to tackle any given social challenge, based on the latest evidence? (1/2)
This was a fun ML problem to tackle, underlined some of the data quality issues with EPCs (92% of the storey count field was missing) 😅.

Think the conclusion around the distinct heating strategies needed for areas with different rise types is definitely a salient one!
How are *flats* in England and Wales heated?
It's a surprisingly interesting question, and my Nesta colleagues Roisin Gorman and @helloaidank.bsky.social have been looking into it...

www.nesta.org.uk/project-upda...
Favourite feature from the GPT-5 release is being able to quickly spin out different UIs (which can be previewed), make easy edits without needing to manually edit JS code myself. It's pretty good at instruction following now too!
OpenAIs graphs against humanity for their release of GPT-5 is just *chefs kiss*. We've achieved PhD level intelligence but watch us make graphs where 50 < 47
What a ridiculous state of affairs. Terence Tao one of the greatest mathematicians of his generation getting his grants suspended 💩
Brilliant news and about time!
The biggest nuclear programme in a generation will “get Britain off the fossil fuel rollercoaster”, the energy secretary, Ed Miliband, has said, announcing £14.2bn to build a new nuclear power station and a drive to build small modular reactors.

www.theguardian.com/business/202...
Sizewell C power station to be built as part of UK’s £14bn nuclear investment
Ed Miliband promises to ‘get Britain off the fossil fuel rollercoaster’ with new plant expected to create 10,000 jobs
www.theguardian.com