After three years of intense debate within Government, industry and the wider policy community, we finally have a decision: The UK will not be implementing a zonal pricing system. Instead, the Government has decided it is better the devil we know and confirmed that it will be pushing forward with a reformed national market.
For some, this will be a missed opportunity. Proponents of a zonal system have long argued that it would encourage investment in exactly the areas that need both electricity and have the favourable conditions to produce it, providing much-needed flexibility to manage the challenges of regional supply and demand in a low-carbon grid.
For others, common sense has prevailed. As we race ever closer to the Government’s Clean Power 2030 (CP30) target, industry figures warned that such an overhaul in the system now, with the uncertainty that goes with it, would hit investor confidence at a time when we need to be delivering more projects than ever.
In the Government’s defence, it was in a bind, having to rely on incomplete data, endless variables and unknowable what-ifs. While the debate will continue to rumble on in the energy policy community, for industry, regardless of what side of this argument you were on, there was a broad consensus that a decision was needed one way or the other. This was particularly true ahead of Allocation Round 7 of the Contract for Difference auction, that began just days after the Government’s final decision on REMA and will have to do the heavy lifting in delivering CP30.
So, now we have a decision, what exactly will a reformed national system look like? The Government’s REMA decision document was striking in its brevity and missing any clear sense of what the reform package for the national market will actually look like. What did emerge is its preference for a centralised model, with decision-making left in the hands of NESO, Ofgem and the government itself.
The Government has committed to publishing a ‘Reformed National Pricing Delivery Plan’ later this year that will set out the next steps on design and delivery. Below we break down the current options on the table and our thinking on the key factors that will shape decision-making.
Transmission Charges: Going Nowhere Fast
Reform of Transmission Network Use of System (TNUoS) charges has been on the table for years. The idea is to sharpen locational signals and give investors more certainty. In practice, every serious attempt has failed under stakeholder opposition.
And with the new Strategic Spatial Energy Plan (SSEP) set to dictate where new projects are located, the role of locational charging looks increasingly redundant. If central planners are calling the shots, the case for years of wrangling over charges quickly falls away.
The Balancing Mechanism: Marginal Gains
Reforms to the Balancing Mechanism (BM) are pitched as efficiency measures – lowering thresholds for participation, shortening settlement periods, tightening notifications, even a nod to unit-level bidding.
These changes might tidy up the system, but they don’t address the central challenge: congestion. Without tackling the sheer scale of bottlenecks on the grid, the BM risks being little more than a cosmetic fix.
Transmission: The Price of Progress
On constraints, the uncomfortable truth is clear. The only real solution is to build more transmission and a lot of it. That means billions in investment, disruption and inevitable political battles over pylons and planning.
Government initiatives like the Constraints Collaboration Project or siting new demand behind bottlenecks may help at the margins. But without major new infrastructure, constraints will continue to weigh heavily on the system.
The Heavy Lifting Falls on the SSEP
Holding it all together is the SSEP, billed as the blueprint for a central, coordinated grid. It will determine the location of new generation, storage, and even demand heavy users like data centres.
On paper, it promises order. In practice, it remains a gamble on central planning at a scale not seen in decades. For investors, engaging with the process will be essential – ignore it, and risk being left on the wrong side of the map.
Next Steps
The direction of travel is starting to become clear: more centralisation, more planning and more government intervention in the market. What remains unclear is whether Ministers will have the appetite to force through reforms that will divide stakeholders and test political capital.
What is certain is that doing nothing is no longer an option. The next test will be whether the promised Reformed National Pricing Delivery Plan later this year offers clarity or simply pushes the hard choices further down the road.
