Black Night
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RFS 001-05 · September 2026

Energy savings with a payback

Software that cuts energy bills for homes and small businesses — and proves it in pounds, not promises.

The problem

Energy is one of the biggest costs for homes and small businesses, yet most people can’t see where it goes or what to change. Climate products that save money get adopted; the rest get ignored.

What we want to see

  • Software that finds and fixes energy waste automatically
  • Savings measured and reported in pounds
  • Works with smart meters, tariffs and existing devices
  • Business models that share the savings

Who should build it

Software engineers, data analysts and anyone obsessed with efficiency.

Signals we look for

  • Verified savings on real bills
  • Customers who stay
  • A clear path to installer or utility partners

Ready to build? Apply now.

Five minutes. No CV. Every application is read by the founders.