Bulgaria’s competition authority has intensified its examination of the wholesale fuel market, requesting additional cost and pricing information from Lukoil Bulgaria and Lukoil Neftochim Burgas.
The investigation is examining how movements in crude-oil prices, refinery costs and other inputs are reflected in wholesale petrol and diesel prices.
The latest request covers the period from May 1 to Sept. 28, 2026 and requires detailed information on deliveries, production expenses and the individual components used to calculate wholesale prices.
The companies have also been asked to explain how costs are calculated and allocated and have seven days to submit the requested information.
The regulator plans to compare movements in underlying production costs with changes in wholesale prices to assess how quickly lower or higher input costs are transmitted to the Bulgarian market.
The latest request extends an existing examination of Lukoil’s position in Bulgaria’s fuel sector rather than opening an entirely new case.
The investigation comes at a sensitive moment for regional fuel markets, where refinery economics, crude-price volatility and changing supply routes continue to influence retail and wholesale pricing.
