Regional energy pricing could force Londoners to subsidise cheaper power in Scotland

The potential overhaul of Britain’s energy market system has sparked a heated debate over fairness and investment costs. Proposals to switch from the current national wholesale power model to regional zoning could lead to households in London and the southeast shouldering higher bills to offset cheaper electricity for those living near wind farms in northern Scotland.

Tom Glover, UK country chairman for German energy firm RWE, voiced concerns about the impact of the plan. He highlighted that while regions with abundant renewable energy resources, like northern Scotland, would experience significantly lower wholesale energy prices, urban areas such as London could face soaring costs, exacerbating an already entrenched postcode lottery in the energy market.

The concept of regional zoning is backed by National Electricity System Operator (NESO), the energy regulator Ofgem, and suppliers like Octopus Energy. Proponents argue that such reforms would enhance efficiency, reduce spending, and limit the costly practice of paying wind farms to shut down excess energy production. By balancing supply and demand within designated zones, renewable projects and battery installations could be prioritised closer to areas of higher energy use, cutting infrastructure costs.

However, major wind developers, including RWE, Scottish Power, SSE, and Orsted, have challenged the model. Glover highlighted that aligning energy pricing with regional factors could deter the billions of pounds of investment necessary to meet the UK’s renewable energy targets by 2030. He cautioned that uncertainties about the number and boundaries of zones would escalate risks for investors, potentially driving up costs for new wind farm projects offshore.

Concerns over fairness have also arisen. The funding for renewable energy development is currently shared nationally through levies added to all consumers’ bills. Glover argued that it would be unjust for consumers in London and the southeast to continue contributing to these levies while seeing higher energy costs compared to regions such as northern Scotland.

Critics question whether the government will absorb regional pricing variations or pass them to consumers’ bills directly, as seen in international examples. If allowed to vary, northern Scotland could emerge as one of Europe’s most affordable regions for electricity, while Londoners would pay some of the highest prices in Britain—potentially creating stark regional imbalances.

The government has acknowledged that the current market structure is no longer fit for purpose and that reforms are essential to rein in mounting inefficiencies, particularly given the strain on existing cabling infrastructure. NESO spends billions annually to address these inefficiencies, a challenge that could become unsustainable without significant intervention.

Although the government has yet to decide definitively on regional zoning, indications suggest that maintaining the status quo is unlikely to be an option. Whether through zoning or alternative national pricing strategies, ministers face the challenge of balancing efficiency improvements with fairness and continued investment in clean energy to meet long-term climate objectives.