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Microbusiness using under 100,000 kWh for Power

Microbusiness using under 293,000 kWh for Gas
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When will the RIIO-3 framework come into effect?

  • RIIO-3 will cover the five-year period from 1st April 2026 to 31st March 2031 for electricity transmission, gas transmission, and gas distribution.  
  • The Final determination was published on 4th December 2025, and can be accessed via this link – Click here