UK Energy Market Report — 09 July 2026

What we’re watching today

• Sizewell B lifetime extension to 2055 signals long-term nuclear confidence.
• One Earth Solar Farm receives development consent, advancing grid-scale solar.
• High grid carbon intensity (232 gCO2/kWh) driven by gas and imports.
• Global oil prices surge amid Iran ceasefire breakdown and supply concerns.

Headlines and what they mean

Sizewell B power plant given lifetime extension to 2055

The extension of Sizewell B’s operational life to 2055 confirms the government’s commitment to maintaining existing nuclear capacity as a cornerstone of UK energy security. This decision reinforces the role of legacy nuclear assets in delivering stable, low-carbon generation, particularly as the country transitions toward net zero. The move supports long-term grid stability and reduces reliance on gas during winter peaks. source

Government approves UK’s second largest solar farm

The approval of One Earth Solar Farm marks a significant step in scaling up renewable generation capacity. With a planned output of 300 MW, the project will contribute to the government’s target of 100 GW of solar by 2030. The development is expected to deliver local jobs and support grid resilience through distributed generation. This follows recent policy signals to fast-track renewables under the CfD Allocation Round 8 framework. source

Draft strategic policy guidance for electricity networks growth

This consultation sets out a framework for expanding electricity networks to accommodate future renewable deployment and electrification. It introduces new criteria for network investment prioritisation, including regional equity and decarbonisation alignment. The guidance will shape how distribution network operators (DNOs) plan upgrades, directly impacting project timelines and costs for developers. Businesses should monitor finalised rules ahead of 2027 grid connection applications. source

Decision: Jackdaw Field Development

The approval of the Jackdaw Field Development confirms ongoing support for North Sea oil and gas projects. While this reinforces short-term energy security, it also raises questions about long-term alignment with net zero targets. The project is expected to deliver 150,000 barrels of oil equivalent per day, contributing to domestic supply and reducing reliance on imports. However, developers must now meet updated environmental and decommissioning standards. source

Notice: Longer Duration Energy Storage (LoDES) Demonstration Programme: successful projects

The selection of eight LoDES projects for funding signals a strategic push toward grid-scale storage solutions capable of holding energy for 12+ hours. These technologies are critical for managing intermittency from wind and solar, especially during winter. The successful projects include flow batteries and thermal storage, with deployment expected by 2028. This initiative supports the UK’s goal of 10 GW of long-duration storage by 2030. source

Geopolitics and global markets

Global oil prices rose over 7% following the collapse of the Iran ceasefire, triggering supply concerns and market volatility. The EIA reported a rare build in US crude inventories, which temporarily eased price pressure, but the geopolitical shock outweighed this. Meanwhile, Gulf producers are aggressively targeting Asian markets, and Russia’s diesel export ban amid Ukraine attacks has tightened European fuel supplies. These developments are influencing global energy pricing and may feed through to UK wholesale gas and fuel costs. source, source

The view from the trade desk

The UK grid’s current carbon intensity of 232 gCO2/kWh — driven by 54.6% gas and 18.4% imports — indicates a high-emission profile. This is consistent with a period of low wind and solar output, with wind at 5.3% and solar at 1.8% of the mix. Businesses with flexible loads should prioritise energy use during periods of higher renewables and lower carbon intensity. The Yolk portal can be used to monitor real-time carbon intensity trends and adjust procurement accordingly.

What to do this week

• Review procurement strategies for Q3 2026, especially for sites with high grid carbon exposure.
• Engage with the DCC Remuneration Policy consultation if you are a smart meter data provider.
• Assess potential for direct procurement via corporate Power Purchase Agreements (PPAs), particularly for solar projects like One Earth.
• Monitor the LoDES programme for opportunities to secure off-take agreements or participate in pilot projects.
• Evaluate hedging options in light of recent oil price volatility and potential fuel cost impacts.

Bottom line

The UK energy market is advancing on multiple fronts: nuclear longevity, solar scale-up, and storage innovation are reinforcing the energy transition. However, high grid carbon intensity and volatile global oil markets underline the ongoing risks. Businesses must align procurement with both policy momentum and real-time grid conditions to manage cost and emissions effectively.