Light, the Grid, and the British Company That Might Break the AI Energy Trade
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Light, the Grid, and the British Company That Might Break the AI Energy Trade
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The AI energy debate has been built on a single assumption. That hyperscalers will buy raw electricity at any premium because they have no other choice. A British company in Oxford has the receipts to prove that assumption is wrong.
This week, the full interview with Dr Xianxin Guo, CEO of Lumai, the only company in the world running billion-parameter LLMs on optical compute. Ninety per cent less energy. Cost per token that rewrites the economics of inference. And the procurement-not-subsidy demand he is making of the British state.
Plus the layoff tracker hits another 18,800 this week, led by a 170-year-old British bank telling investors it is replacing "lower-value human capital" with AI, the most candid C-suite line of 2026 so far.
Three stories. Photons. Power. Britain.
The full newsletter and interview at thesundaysignal.ai. Read this week's issue here: https://TheSundaySignal.ai