Electricity supply
MHHS delivery: joint letter from Secretary of State and Jonathan Brearley
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The Secretary of State for Energy Security and Net Zero and Ofgem’s Chief Executive have written to industry Chief Executives to urge them to deploy the resources necessary to deliver Market-wide Half-Hourly Settlement (MHHS) on time. MHHS is a key enabler of Britain’s transition to Clean Power in 2030 and to net zero.
Main document
[Joint letter on MHHS Implementation [PDF, 135.17KB]
](https://www.ofgem.gov.uk/sites/default/files/2025-04/Joint-letter-on-MHHS-Implementation.pdf)