Power Plays

Modernising the Grid: Solid-State Transformers, Defense-Driven Coal, and Space-Based Tech


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Recorded 22 February 2026. Episode Discussion Points:

  • Two solid-state transformer startups raised major funding this week
  • Why transformers are a critical bottleneck in grid expansion and amidst modernisation pressures
  • Differences between traditional iron-core transformers and solid-state transformers
  • How SSTs use semiconductor power electronics and software control
  • What the benefits of SSTs are
  • Why data centres are an early target market for SST technology

Energy Security

  • Coal becoming linked to energy security narratives in the US
  • Energy security increasingly shaping policy decisions
  • Government support for coal plants despite economics
  • Military interest in resilient energy systems and microgrids
  • Role of renewables in reducing fuel logistics risks

Future / Speculative Energy Infrastructure

  • Space-based solar power concepts
  • Space-based data centres powered by solar
  • Economic and engineering challenges of space energy systems
...more
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Power PlaysBy Charlotte Kirk and Lucy Shaw