Over a quarter of all electricity meters in Britain have now moved to half-hourly settlement
Summary
Elexon reports that 8.4 million meters, over a quarter of GB electricity meters, have now migrated to half-hourly settlement under the MHHS programme, and it is starting to release more granular consumption data. This is a progress milestone on an already-decided reform, not a rule change. The headline number marks how far the migration has run, not a new policy.
Why it matters
MHHS is structurally significant because it lets suppliers see and price when consumption actually happens, which is the precondition for time-of-use tariffs and demand flexibility that reflects real system costs. This release is only the implementation read-out: the rule was settled years ago, and a quarter-migrated estate still leaves three-quarters settled on profiled estimates, so the price signal MHHS enables is not yet operative for most consumers.
Key facts
- •More than 8.4 million meters migrated to half-hourly settlement
- •Over 25% of all GB electricity meters now half-hourly settled
- •Elexon beginning to make more detailed consumption data available
- •Published 2026-05-14 by Elexon (BSC)
Areas affected
Related programmes
Memo
More tha n 8 . 4 million meters have now been migrated to half-hourly settlement as Elexon begins to make more detailed consumption data available to drive innovation. The post Over a quarter of all electricity meters in Britain have now moved to half-hourly settlement appeared first on Elexon .