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Reducing emissions from vessels

Starting in 2021, all supply and standby vessels on fixed contracts for Lundin Energy Norway will have battery hybridisation. This yields a significant reduction in greenhouse gas emissions. We will continue our extensive efforts to do even more to reduce emissions from vessels, both short-term and long-term. Our target is for Lundin’s operational activities to become carbon-neutral by 2030.

In recent years, most of the vessels on long-term contracts with Lundin Energy Norway have been gas-powered (LNG). LNG vessels generally already have lower emissions than vessels powered by diesel fuel. However contracts have now been signed which will ensure that all four vessels in operation for us will also install battery packs for hybrid operation. This means that Lundin Energy Norway probably has the most environmentally-friendly fleet on the Norwegian shelf.

“The immediate effect of installing batteries on board is that we often don’t need to start up an extra generator to handle peak loads. The gas engines can largely be run at optimal RPM and load to ensure efficient fuel utilisation,” explains Lundin’s Senior Marine Supervisor, Sigmund Hertzberg.

“We see fuel consumption reductions on the order of 10 to 30%, depending on the type of operation the vessels are conducting. We are already involved in several long-term projects with the objective of developing zero-emission technology for ships. But it is equally important to look at which measures we can implement to reduce emissions now, in the short term,” explains Sigmund Hertzberg.

In addition to a hybrid solution, all the boats Lundin currently contracts long-term are enabled for connection to onshore power. The boats take energy from the electrical grid, and can stop their engines as long as they are at quay. This contributes not only to reduced fuel consumption and CO2 emissions but also better air quality and less noise around the harbours where we operate. NOX emissions from large harbour facilities contribute to reduced air quality in some larger cities in Norway.

“The batteries also provide a benefit when the boat is at quay where no onshore electricity is available,” says Sigmund Hertzberg. “Just like hybrid cars, hybridised boats can switch between battery and engine operation, and thus make better use of the fuel consumed. Without batteries, sometimes as little as 20% of the power from the engine can be utilised for actual operations,” says Hertzberg.

Gas + battery = possibilities
Lundin has already achieved substantial emission reductions by stimulating cleaner operation and reduced emissions from the offshore fleet, both in the form of technological solutions and optimal use of what we have in place today.

“Environmental management is always on our agenda when we meet with the ship-owners, and they’ve really tackled this challenge head-on,” says head of the Lundin environmental group, Axel Kelley. “We’re discussing a range of measures, large and small, to reduce emissions. Several of them are possible because we’ve chosen LNG vessels with batteries. One example is utilising surplus heat from the gas engine exhaust in a generator that produces electric power that can be stored in the battery. The gas engines can also run on biogas. There shouldn’t be any technical barriers for this, but it will require investments in production and distribution solutions,” Kelley says.

A far simpler measure is to wash hulls and polish propellers. This is also done today in connection with major maintenance work. Using new robot technology, you can clean the boat under the waterline both quicker and more frequently. Measurements show that the resistance in the water is reduced by several percentage points after washing and polishing.

Carbon-neutral by 2030
Earlier this year, Lundin Energy presented a strategy to ensure that our activities will be carbon-neutral by 2030. This will be achieved through a combination of direct emission cuts and offsetting for the low level of emissions we cannot avoid, such as from supply vessels. The steps we are now taking for our vessels will provide an important contribution to this target. However the largest emission reductions overall will take place when we connect the Edvard Grieg platform to power from shore in 2022.