Governance
Who takes which decision, and how the escalation chain runs.
The governance layer of GB energy has six actor families and seven codes. Most analysis stops at naming them. The operating model goes one level deeper: which decisions each actor owns day-to-day, where an issue escalates, and what an emergency coordination call actually looks like when the physical layer is under stress.
18Route 18 · FoundationsAfter this route you will be able to
- Identify which actor owns a given day-to-day decision (dispatch, licensing, settlement, consumer redress).
- Trace the escalation path for a typical incident across the governance layer.
- Distinguish operational authority from policy authority.
- Describe how the Electricity Supply Emergency Code and Ofgem enforcement differ.
- Use the operating model to locate accountability when something goes wrong.
1 October 2024NESO launches · the operating model is redrawn
A three-decade pairing of operator and owner ended. Accountability moved with it.
From 1990 to 2024, National Grid plc was both the system operator for GB electricity and the transmission owner in England and Wales. The operator made balancing decisions. The owner earned regulated returns on the asset base that carried those balanced flows. Both were inside the same listed company.
The
The practical consequence took months to crystallise. NESO's balancing actions no longer favour a sibling transmission business. Connection offer timing, reinforcement prioritisation, ancillary procurement: each is made with different incentives. The operating model is still being re-learned across the sector.
Name the actors is easy. Understanding who decides what on an ordinary Tuesday is harder. What does the operating model look like day-to-day?
The answer starts with the six actor families. Then the rule: one layer of authority per decision.
Section 01 · Six actor families
Policy, regulation, operation, settlement, delivery, consumer voice.
Every GB energy decision maps to one of these six. Clean separation is a useful fiction; actors overlap and contest each other; but every decision resolves to one of the six.
Policy
DESNZ
Sets strategic direction, writes White Papers, introduces primary legislation. Owns Clean Power 2030, the Warm Homes Plan, the Hydrogen Strategy.
Regulation
Ofgem
Independent regulator. Issues licences, approves price controls (RIIO), approves code modifications, enforces consumer protection.
Operation
NESO
Public corporation since October 2024. Electricity system operator, gas system coordination, whole-system planning.
Settlement
Elexon
BSC administrator. Runs half-hourly settlement for GB electricity, publishes BMRS, delivers MHHS.
Delivery
TOs, DNOs, GDNs, suppliers
Private companies operating under regulated licences. 3 transmission owners, 6 DNO groups, 4 GDNs, ~50 electricity suppliers.
Consumer voice
Citizens Advice, Energy Ombudsman
Statutory consumer advocate (CEARA 2007) and complaints resolver. Feeds into Ofgem policy through regulatory reviews.
Each actor has decision rights within its role and accountability up to the next layer. Consumer outcomes depend on all six functioning well together.
Section 02 · Decision rights
Who owns the day-to-day choices.
Each actor owns a specific type of decision. Crossed wires arise when an actor is asked to answer something outside its remit.
Real-time dispatch belongs to NESO (electricity) and National Gas (gas). Both operate within rules set by Ofgem and directions from DESNZ in emergencies.
Connection offers belong to NESO for transmission, DNOs for distribution. Both operate under CUSC (transmission) and DCUSA (distribution) rules.
Price control determinations belong to Ofgem. NESO, TOs, DNOs and GDNs all operate under periodic price controls (RIIO-ED2 for distribution, RIIO-T3 for transmission, RIIO-3 for gas distribution).
Settlement belongs to Elexon for electricity and Xoserve for gas. Both administer industry codes and resolve disputes.
Consumer complaints belong first to the supplier, then to the Energy Ombudsman after eight weeks. Citizens Advice advocates on systemic consumer issues through regulatory consultations.
Strategic policy belongs to DESNZ via Strategy and Policy Statements that set Ofgem's strategic context. Only primary legislation can override that framework.
The Authority, in carrying out its principal objective to protect the interests of existing and future consumers, shall have regard to the Strategy and Policy Statement issued by the Secretary of State, and to the need to facilitate the achievement of the Secretary of State's strategic priorities.
Energy Act 2013 Part 5 (Strategy and Policy Statement framework)
Section 03 · Accountability chain
A consumer complaint. Who owns each step?
A customer reports they were wrongly charged. The escalation chain crosses multiple actors. Each has its own responsibility.
Check your understanding
Three questions on what you have just read.
Key takeaways
- Six actor families: policy, regulation, operation, settlement, delivery, consumer voice.
- Each actor owns specific decisions. Most confusion comes from asking the wrong actor.
- Ofgem is a systemic regulator. The Energy Ombudsman handles individual disputes.
- DESNZ sets direction through Strategy and Policy Statements; Ofgem implements within that frame.
- NESO and the transmission owners are now separate legal entities. This is the 2024 reform in practice.
References
- Energy Act 2023
Statutory basis for NESO and the operating model reform.
Primary statutory reference.
- Ofgem
Licences, code modifications, price controls.
Primary regulatory source.
- Energy Ombudsman
Individual consumer dispute resolution.
Primary ombudsman reference.
- Citizens Advice
Statutory consumer advocate for GB energy under CEARA 2007.
Consumer advocate.
Continue with LTDS overview for the regulated network data publication that anchors the digital layer in practice.