Cressier refinery restart eases Switzerland’s fuel-supply risk

Cressier has restarted, removing an immediate pressure point in Switzerland’s petrol and diesel supply. Operations resumed on September 21 after the refinery stood idle for around two weeks. The restart means fuel can once again move through regular supply channels, and the authorities currently see no need to draw additional volumes from compulsory stockpiles.

The relief follows a short period in which Switzerland faced a potential bottleneck. The country relies on imported petroleum products and on transport routes that can be disrupted quickly. The interruption at Cressier coincided with restricted shipping on the Rhine, leaving fewer options for replenishing fuel supplies through normal commercial deliveries.

The Federal Office for National Economic Supply responded by releasing emergency stocks between September 8 and 20. Those reserves helped maintain access to petrol and diesel while the refinery was offline and river transport remained constrained. The intervention shows how the system is designed to work during a temporary disruption: commercial flows continue where possible, while compulsory reserves cover the shortfall.

For motorists, hauliers and businesses, the immediate concern has eased. The wider supply chain remains under close watch.

Authorities released up to 60,000 cubic metres of fuel from compulsory reserves during the disruption. The emergency allocation included up to 30,000 cubic metres of diesel and 30,000 cubic metres of petrol.

The Federal Office for National Economic Supply said the fuel was released between September 8 and 20, while the refinery shutdown and Rhine shipping restrictions created the risk of a short-term supply bottleneck. The entire petrol allocation was withdrawn. Around two-thirds of the diesel released was also used, according to the federal authorities.

Those figures provide a measure of the pressure placed on the supply network. Petrol demand affects private motorists across Switzerland, while diesel is central to freight transport, construction, agriculture and many commercial fleets. Even a temporary interruption can therefore spread beyond filling stations and into the movement of goods.

The quantities taken from storage are not a permanent draw on national reserves. Switzerland requires the withdrawn fuel to be returned within six months. That obligation will add a task for suppliers as they rebuild commercial inventories and manage transport constraints on the Rhine. The Cressier restart improves that process, but it does not remove the need for careful stock management.

Low water on the Rhine continues to limit the route Switzerland uses to move fuel and other goods. The Federal Office for National Economic Supply said persistent low levels were severely restricting transport capacity even after the refinery resumed operations.

The Rhine is a critical commercial artery for Switzerland. When water levels fall, vessels must reduce their cargo loads to avoid running aground. That can force operators to make more trips, raise transport costs and slow deliveries. For fuel markets, the effect is particularly sensitive because refineries, storage facilities and import terminals depend on reliable logistics rather than a single source of supply.

The Cressier shutdown and the Rhine restrictions overlapped at a difficult moment. Either disruption can be managed more easily when the other channel is operating normally. Together, they narrowed the margin available to suppliers and prompted the release of compulsory reserves.

The refinery’s return restores domestic processing capacity, yet river conditions still leave the supply chain exposed to delays. Federal officials have not announced a need for another reserve release. That position could change if water levels remain low, commercial deliveries fall behind or another facility experiences an interruption.

Switzerland now has breathing room, but suppliers must still rebuild stocks and navigate a restricted transport network. The Cressier restart removes the refinery outage from the immediate risk calculation. It also creates better conditions for replacing the fuel taken from compulsory reserves before the six-month deadline.

The episode has highlighted the importance of Switzerland’s emergency stockpiles. Between September 8 and 20, the reserves supplied the market with petrol and diesel when regular deliveries faced two simultaneous constraints. The intervention helped bridge the gap without requiring a further release after the refinery returned to service.

Attention now shifts to the Rhine. Persistent low water levels can continue to reduce shipping capacity, leaving import schedules vulnerable even as refinery operations normalize. Fuel distributors, transport companies and public authorities will need to monitor deliveries, storage levels and river conditions closely in the weeks ahead.

For households, the immediate message is practical: the authorities say regular fuel channels are functioning again, and no further draw from compulsory stocks is currently required. For the national supply system, the episode is a reminder that resilience depends on several links working together, including refining, storage and transport.