REMA
Review of Electricity Market Arrangements
Industry ReformsThe UK Government's wholesale review of how the GB electricity market is designed, whose outcome will shape future network charging reform including DUoS.
The Review of Electricity Market Arrangements (REMA) is a Government-led programme, run by DESNZ, examining how the GB electricity market should work as the system decarbonises. It is broader than any single charge: it looks at wholesale market design, locational signals, and how costs are allocated.
Why it matters for network charges: Ofgem has stated it will not prioritise reform of distribution charging (DUoS) until the direction of REMA is clearer. Several charging reforms are effectively waiting on REMA's outcome:
- Distribution charging (DUoS) reform is on hold pending REMA direction
- Transmission charging (TNUoS) reform is being designed, with delivery targeted around 2029
- Ofgem's wider Energy Cost Allocation and Recovery review feeds into the same picture
Where it stands: REMA is still in development, with periodic Government updates rather than a single decision. No charging methodology has changed because of REMA yet. The current CDCM distribution charging methodology and the post-TCR transmission arrangements remain in force.
The practical read: REMA is a leading indicator, not a live change. It signals that the structure of network charges could shift later this decade, but today's charges are still calculated under the existing methodologies.
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