A strong track record of reducing methane slip

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A commitment to better environmental performance

With the maritime industry facing up to the challenges set by ever-more ambitious emissions reduction targets, Wärtsilä is committed to helping our customers achieve regulatory compliance while maintaining profitability and continuously improving vessel performance.

Methane is the main component of LNG and a highly potent greenhouse gas, with a global warming potential many times that of carbon dioxide. When LNG is burned as fuel, most of the methane is consumed in the energy conversion process, but any unburned methane escapes into the atmosphere, and this is known as methane slip.

Methane slip from Wärtsilä dual-fuel engines has been cut by 75% over the past 25 years, and further advances will continue to reduce methane slip over the coming years. These engine advances and emission abatement improvements mean that our gas engines offer a clear advantage over diesel engines in terms of emissions.

The Wärtsilä Greenhouse gas reduction package

Reduce emissions when operating in gas mode below 85% load

With an easy to access control software upgrade, vessels powered by the Wärtsilä 34DF engine can significantly reduce their greenhouse gas (GHG) emissions. The upgrade is based on adaptive combustion phasing control, which optimises engine behaviour according to the ambient and operating conditions.


30 SEP 2021 Article
5 min read

Decarbonising Shipping Week – webinar series explores segment-specific strategies for EEXI and CII compliance

Wärtsilä’s Decarbonising Shipping Week...
7 SEP 2021 Article
6 min read

Complying with EEXI – how to speed up decarbonisation without slowing down vessels

Time is running out for vessel owners to comply with the IMO’s...
A cleaner, greener machine – Wärtsilä W34DF control software upgrade cuts greenhouse gas emissions at all load points
31 AUG 2021 Article
3 min read

A cleaner, greener machine – Wärtsilä 34DF control software upgrade cuts greenhouse gas emissions

Wärtsilä’s new control software upgrade for its...
Decarbonising maritime will take more than technology
18 MAY 2021 Article
3 min read

Decarbonising maritime will take more than technology

The maritime industry's discussion of decarbonisation thus far has focused upon uncertainties,...
LNG tanker at sea
30 OCT 2020 Article
5 min read

Mind the methane gap

LNG could cut the shipping industry’s CO2 emissions by 25%, but could its methane emissions undermine its climate advantages?...

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