Draft determinations: Advanced Procurement Mechanism re-opener 2026 (RIIO-ET3)
- Publication type:
- Consultation
- Publication date:
- Closing date:
- 31 July 2026
- Status:
- Open
- Topic:
- Energy network price controls,
- Electricity transmission
- Subtopic:
- RIIO-T3: transmission price control 2026 to 2031
Proposed changes to Advanced Procurement Mechanism (APM) allowances and adding a new APM Cost Category.
Consultation description
We are consulting on our Draft Determinations to:
- increase the APM bespoke procurement allowance across all three electricity transmission licensees
- add Modular Substations (32kV, 132kV, 275kV)’ as a new APM cost category
Who should respond
- Electricity transmission owners
- Consumer groups
- Manufacturers of electricity transmission equipment
- Electricity transmission innovation community
How to respond
Submit your response by 5pm on 31 July 2026 by emailing RIIO3@ofgem.gov.uk.