Neste to invest over EUR 400 million in Porvoo refinery turnaround

Scope and schedule

Neste will carry out an approximately nine-week maintenance turnaround at its Porvoo refinery between August and October 2026. The turnaround will focus on tasks that require a refinery shutdown, including statutory inspections, routine maintenance and asset improvement initiatives; such maintenance is typically held at intervals of 2.5 to 3 years.

Cost and workforce

The total estimated cost of the project is over EUR 400 million. Around 7,500 people will participate in the work — roughly 1,000 are Neste employees and the remainder are experts from more than a hundred contractor companies, says Jim Holmbäck, Director, Turnarounds.

Supply continuity

Fuel deliveries to customers will continue throughout the maintenance turnaround. Security of supply will be maintained by producing and storing goods in advance, and the Kilpilahti port and the Porvoo distribution terminal will operate normally during the work.

Local impacts and logistics

The turnaround will significantly increase traffic in the Kilpilahti area and special traffic arrangements will be published on the local Kilpilahti website prior to the work. Short-term flaring and potential noise disruption may occur during both shutdown and startup; Neste says it aims to minimise disturbances to local residents and other traffic.