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Silverö: 40 cubic metres of diesel saved in a season
Rather than investing in a new vessel, Transdev converted an existing one to electric propulsion. Completed in four months, the Silverö retrofit saved around 40 cubic metres of diesel in its first season.
Why retrofit rather than build new
- A cost of around a quarter of that of a new electric vessel.
- A conversion completed in four months, against at least two years for a new build.
- Speed and passenger capacity preserved despite weight constraints.
- More than 1,000 hours of uninterrupted operation in the first season.
A significantly reduced environmental impact
"Retrofitting represents around 25% of the cost of a new electric vessel. By reusing a vessel in good condition, we significantly reduce environmental impact."
Torvald Hvistendahl, Technical Manager
What were the technical challenges?
The main challenge was managing space and weight constraints while maintaining performance. That limited the battery capacity installed, but speed and passenger capacity were preserved.
What did the first season deliver?
The vessel operated for more than 1,000 hours without interruption. Passengers appreciate a quieter journey and the crew benefits from improved working conditions. Around 40 cubic metres of diesel were saved and energy consumption fell by about 20%.
Key figures
75%
cost savings versus a new vessel
20%
reduction in energy consumption
More than 1,000
hours of uninterrupted operation
40
cubic metres of diesel saved
Frequently asked questions
What is a vessel retrofit?
Converting an existing vessel, here to electric propulsion, rather than building a new one.
How long did the conversion take?
Four months, against at least two years for a new build.
Was passenger capacity reduced?
No, both speed and passenger capacity were preserved.
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