Wholesale energy prices in the UK shot up sharply in the week ending 8 March, according to new data from the Office for National Statistics. The System Average Price of gas jumped 68 per cent compared with the previous week, while electricity climbed even further — up 74 per cent. Behind the numbers: escalating tensions in the Middle East and their knock-on effect on global supply chains.

The spike was driven by events in a region that remains critical to the world’s oil and liquefied natural gas (LNG) supply. As instability intensified, energy traders moved fast to price in potential disruptions, pushing wholesale costs higher across both gas and electricity markets.

How Wholesale Energy Markets Work

Wholesale prices are what energy suppliers pay for gas and electricity before reselling it to homes and businesses. Unlike the retail price cap that protects domestic customers, wholesale prices move constantly — reacting to supply and demand, geopolitics, weather, and commodity markets.

A 68–74 per cent weekly jump is dramatic, but it reflects short-term volatility rather than a sustained price level. That said, sharp movements like this still shape supplier purchasing decisions and can feed through to future bills. Suppliers typically hedge by buying contracts in advance, so current household bills are based on wholesale prices from weeks or months ago. But if high prices stick around, they eventually show up in the next quarterly cap adjustment.

Why the Middle East Still Matters

The UK imports relatively little oil directly from the Middle East. But energy is priced on global markets in US dollars, so when international tensions threaten supply anywhere, traders bid prices higher — even before any actual disruption happens.

We’ve seen this play out before. When Russia invaded Ukraine in February 2022, European gas prices surged as Russian supplies were cut. Concerns over LNG from key producers have triggered similar reactions. Despite the growth in UK renewables and domestic North Sea production, the country’s energy costs remain tied to what happens thousands of miles away.

Where Were the Renewables?

Wind generation normally acts as a price dampener — when output is strong, it displaces expensive gas-fired power and helps keep electricity costs down. The 74 per cent electricity price jump suggests wind output was subdued that week, removing that natural cushion at exactly the wrong moment.

What This Means for Household Bills

Will this spike hit your energy bill? Probably not straight away.

The price cap, which covers around 22 million domestic customers on standard variable tariffs, is updated quarterly rather than weekly. A one-week wholesale spike won’t show up immediately. But if wholesale prices stay elevated over several weeks, future cap adjustments will reflect those higher costs.

Duration matters. A sharp one-week movement can reverse quickly if tensions ease. If they don’t — or if other supply disruptions emerge — elevated wholesale prices could become the new normal for a while, pushing bills higher in subsequent quarters.

Anyone on a fixed-rate tariff won’t feel this at all while their deal lasts. But those approaching the end of a fixed contract may face steeper renewal rates if suppliers have been buying energy at inflated wholesale prices.

Businesses Feel It First

Small and medium-sized businesses tend to be more exposed than households. Many operate on contracts that track wholesale prices more closely, meaning cost impacts hit faster. For manufacturers, pubs, restaurants, and other energy-hungry sectors, a 68–74 per cent spike is a real problem — particularly for smaller firms without the resources to hedge their energy purchases.

Source: @ONS

Key Takeaways

  • Wholesale gas and electricity prices jumped 68 per cent and 74 per cent respectively in the week to 8 March, driven by Middle East tensions
  • The UK energy market remains vulnerable to global supply disruptions despite growing renewable capacity
  • Domestic customers on standard variable tariffs are shielded by the quarterly price cap, so immediate bill impacts are unlikely
  • Businesses on commercial energy contracts face more direct and rapid cost exposure to wholesale spikes

What This Means for Kent Residents

For Kent households, there’s no need to panic about an immediate bill increase — the quarterly price cap provides a buffer against short-term wholesale swings. But it’s worth keeping an eye on Ofgem announcements ahead of the next cap review. If you’re on a fixed tariff that’s expiring soon, shopping around now could lock in a better rate before any sustained price rises feed through.

Kent businesses — particularly in hospitality, manufacturing, and retail — should review their energy contracts and consider whether fixed-rate deals or hedging options could offer protection. The Federation of Small Businesses and local chambers of commerce can advise on energy procurement strategies. For help with energy costs, Citizens Advice Kent offers free guidance on bills, tariffs, and available support schemes.