Gas Curve Volatility Signals Further Risk

4th June 2026

UK and European energy markets remain exposed to sharp price movement, with geopolitics, weather, storage and outages all reinforcing the risk premium in near-term contracts. The Iran situation continues to dominate sentiment, particularly around the Strait of Hormuz and the extension of the ceasefire, while lower wind output, warm temperatures, weak European storage and reduced hydro flexibility are adding further support to gas and power prices. For UK businesses, the message is clear: waiting for calm may mean missing the dips that do appear.

Iran War keeps markets reactive

Geopolitical uncertainty remains the main driver of speculative trading across the gas curve. Last week, fresh US-Iran strikes initially dampened hopes of a near-term agreement, although the action appeared contained in an effort to preserve the ceasefire. The front month gas contract opened 2.35% higher last Thursday, with gains visible as far out as Winter 2028.

Sentiment then shifted again on Friday, when reports suggested an agreement between the US and Iran was nearing final ratification. By market close, the front month and front season had fallen by 2.7% and 2.4% respectively. However, conflicting claims from both sides and President Trump leaving talks without a decision have kept risk firmly priced in. On Monday morning, the front month gas contract, July 27, opened 4.15% higher at 115.4p/therm, equivalent to 3.94p/kWh.

For buyers, this highlights again how pricing can move quickly in both directions. The commercial risk is not only that markets rise, but that opportunities to secure value may appear and disappear within short windows.

Weather supports near-term prices

UK temperatures are expected to remain largely above seasonal norms through mid-June as a Super El Niño seems inevitable this year. That supports cooling demand and can reduce renewable generation efficiency during warmer periods. Wind generation is forecast to fall sharply from recent highs, which would increase reliance on gas-fired generation to meet demand.

Solar output remains broadly in line with seasonal expectations, which should help offset some of the drop in wind. Even so, the combination of warmer weather and lower wind is likely to support UK power and gas prices in the near term.

Across Europe, above-average temperatures are also expected to persist. German and French June and Q3 power contracts reached their highest levels of the year last week, reflecting the impact of stronger cooling demand and concerns around generation availability. Forecast rainfall should ease some drought concerns and improve hydro and nuclear prospects, particularly in France, but weather remains a live source of volatility.

River and hydro risks further uncertainty

European river levels remain close to Low Navigable Water Level thresholds. If levels fall further, coal and oil deliveries could be restricted, transport costs may rise and fuel supply flexibility could weaken. That would increase reliance on gas-fired generation and pipeline imports, indirectly supporting UK gas and power prices as competition for supply rises.

Norwegian hydro balances have also fallen to multi-year lows. This matters because Norway provides one of Europe’s most flexible and lower-cost power sources. Reduced hydro reserves may limit Norwegian exports to the UK and Continental Europe, increasing dependence on gas-fired power generation. While rainfall and snowmelt may help recovery, a warmer and drier summer could restrict replenishment and keep supply concerns elevated, on top of affecting hydro and nuclear generation.

Outages add another layer of risk

Norwegian gas outages are expected to rise sharply from mid-June, reducing supply into Europe. At the same time, French nuclear availability is expected to soften from current highs, removing some low-cost generation from the system.

Together, these factors point towards greater reliance on gas-fired generation. Any unplanned outage or extension to maintenance schedules could add further upside risk, particularly while storage levels remain below normal and geopolitical uncertainty is already influencing market direction.

Storage remains below seasonal norms

European gas storage currently stands at around 40% fullness, well below normal seasonal levels of 53.14%. This makes summer injection activity more important than usual, as the market needs to rebuild stock levels ahead of winter.

Stronger LNG imports will be required to meet winter storage targets. That leaves European gas markets sensitive to global supply and demand dynamics, including competition for cargoes. For UK businesses, this means the summer period should not be viewed as a low-risk window by default. Injection demand, LNG uncertainty and geopolitical risk can still create significant price movement.

Curve risk remains concentrated near-term

Winter 26 is currently trading at more than double the price of Summer 29, with a +101% premium. That shows how much risk is still priced into the near end of the gas curve.

Volatility data reinforces the point. Since 1 March, NBP Day-Ahead has recorded 43 trading days with price moves above 2%. Winter 26 has recorded 41 such days, while Summer 27 has recorded 38. Winter 27 has also remained active, with 31 days above the same threshold. These are not normal conditions for buyers approaching renewal without a clear strategy.

The further-out contracts, including Summer 28, Winter 28, Summer 29 and Winter 29, have seen lower volatility. That does not remove risk, but it highlights where the market is placing the greatest uncertainty.

Traders’ View

Markets remain highly reactive, but that does not mean buyers should sit still. The strongest position is to have a flexible trading framework in place before the next opportunity appears. For customers with flexible contracts, current volatility can create chances to secure more favourable pricing when geopolitical, weather or supply concerns ease, even if ephemerally.

Businesses approaching renewal should review exposure to Winter 26 and Summer 27 in particular, given the high number of sharp daily moves since March. Waiting for a perfect entry point may leave buyers exposed if storage concerns, outages or Iran-related headlines push prices higher yet again.

The practical step is to stay close to the market and be ready to act when value appears. For live support on market movement, purchasing windows and flexible contract strategy, contact the NGP trading desk at [email protected].