Energy codes
CMP427: update to the transmission connection application process for onshore applicants
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We have approved CMP427, specifically the Original Proposal. This will see a landowner Letter of Authority requirement introduced for new Onshore Transmission Connection Applications. These changes to the Connection and Use of System Code (CUSC) will take effect from 28 March 2024.
Main document
[CMP427: update to the transmission connection application process for onshore applicants [PDF, 246.15KB]
](https://www.ofgem.gov.uk/sites/default/files/2024-03/CMP427%20Decision%20FINAL%20PDF.pdf)