Electricity Zonal Pricing: What the UK Reform Means for Business Energy Costs

The way electricity is priced in Great Britain is under serious review. The proposed move to zonal pricing — where electricity prices vary by region based on local supply, demand, and grid conditions — is one of the most significant potential changes to the commercial energy market in a generation.

---

Why the current system needs reform

The UK electricity market operates on a single national wholesale price. All generators receive the same clearing price regardless of location. This worked when generation sat near demand centres. It doesn’t work now.

The UK’s renewable build-out has concentrated large volumes of generation in Scotland and northern England, far from where most demand sits. Transmission infrastructure can’t move all that power south. So National Grid pays wind farms to switch off. These constraint costs have run into billions of pounds per year and are projected to grow substantially. Every electricity consumer pays for this through balancing charges — whether they’re in Aberdeen or Croydon.

---

What zonal pricing would do

Under zonal pricing, the country splits into pricing zones. Each zone clears at a price reflecting local supply and demand. Scotland, with abundant wind, would see lower prices when output is high. London and the South East, with high demand and limited local generation, would see higher prices at peak.

Ofgem’s analysis suggests the reform could save the UK system £3.7 billion annually by reducing curtailment and inefficiency. Some modelling projects household savings of up to £240 per year in benefiting areas.

---

The legitimate concerns

The principal concern is investment risk. UK renewable development relies heavily on Contracts for Difference — long-term government-backed revenue guarantees. If electricity prices in Scotland fall structurally, the CfD strike prices needed to make projects viable may rise, potentially offsetting some efficiency gains. This is genuinely debated.

There’s also a distributional concern: businesses in high-price zones that can’t relocate face a structural cost increase. That’s a real consideration, not just political positioning.

---

Current status

The Review of Electricity Market Arrangements (REMA) has been consulting on zonal pricing since 2022. As of early 2026, no final decision has been made. The direction of travel favours some form of locational pricing. Implementation, if it proceeds, is years away from any decision point.

---

What to consider now

Immediate practical impact is limited — zonal pricing isn’t live. But multi-site businesses should understand where their sites would fall in any plausible zonal map. Energy-intensive businesses with flexibility in locating new capacity should factor potential price differentials into long-term site decisions. And all businesses should note: the current system’s inefficiency is already costing money through balancing charges. The argument for reform exists regardless of its distributional outcomes.

Telnergy monitors UK energy market structural developments as part of how we advise clients. Call 01202 028888 or email hello@telnergy.com.

---

FAQ

Has the UK decided to implement zonal pricing?

Not yet. REMA has consulted since 2022 but no final decision has been announced as of early 2026.

Would my business pay more or less?

Depends on location. Scotland and northern England are most likely to benefit from lower prices. The South East is most likely to face higher prices. Other regions are genuinely uncertain pending zone boundary decisions.

What is curtailment?

Paying a wind farm to reduce or stop output because the grid can’t transport the electricity to where demand is. Constraint payments are recovered from all electricity consumers through balancing charges. You’re already paying for this problem.