Helping in the construction of the world's longest underwater tunnel

Linking Northern and Southern Europe through new communication routes is one of the major engineering goals currently being realised.

Strong investments are being made in the development of infrastructures designed to reduce travel times and facilitate the movement of goods between countries.

One of them is the Fehmarnbelt tunnel, a mega construction that is pushing the boundaries of engineering. This unique $8 billion project will transform travel between Central Europe and the Scandinavian countries. Once completed, it will become the longest combined road and rail immersed tunnel in the world, spanning almost 20 km, crossing the Fehmarn Strait in the Baltic Sea and providing a direct connection between Northern Germany and the Danish island of Lolland.

It is a key component of the Scan-Med corridor, a transport network of more than 5,000 km, stretching from Malta in the south to Finland in the north.

A project of this scale demands the most reliable equipment to ensure its successful completion on time. To provide back-up power for the machinery involved in the tunnel’s construction, Genesal Energy’s engineering team designed and manufactured 16 generator sets, delivered in two phases.

These soundproofed units were customised with canopies of 3,800 mm and 2,900 mm, and fitted with fuel tanks of 630 and 350 litres, offering an autonomy of more than 17 hours at 100% load.

Due to the harsh environmental conditions, and in order to protect the alternators, a special marinisation treatment was applied to increase their resistance to highly corrosive atmospheres.

The generator sets were designed to operate in AMF mode, and are equipped with 3-way double valves to allow manual selection between the integrated tank or an external one for fuel supply.
This ensures a reliable energy supply throughout the construction phase, helping to keep the project on schedule.

Commitment and rigour

At Genesal Energy, we have built a solid reputation in the generator set sector, offering our customers products that stand out for their reliability, performance and quality.

We design and manufacture custom-made solutions tailored to each project’s technical requirements, delivering turnkey systems in which we take care of every stage.

This commitment has allowed us to take part in high-demand projects such as the Fehmarnbelt tunnel, where a reliable power supply is key to the project’s success.

Features

16 soundproofed canopied generator sets: 16 with 3,800 mm length and 2 with 2,900 mm length
Integrated fuel tanks of 630 and 350 litres, providing more than 17 hours of autonomy at 100% load
Fuel tanks fitted with liquid retention trays and leak detection systems
Exhaust gas silencers installed inside the canopy, achieving a -30 dB reduction
Cyclonic filters for engine air intake
Motorised louvres at air inlet and outlet, which open only during operation
3-way double valves to manually switch between integrated and external fuel tanks
Quick external connectors for fuel supply and return
C5-scheme paint surface treatment, compliant with ISO 12944:2018
ComAp InteliLite AMF 25 IL4 control panel
Alternators with anti-condensation resistors and special marinisation treatment
Powerlock switchboards for power output