Study of Power-to-X potential on Danish island Lolland

Lolland landscape

Lolland landscape

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The Danish island Lolland is considered to have what it takes to position itself as a future green energy island. Ranked the number one municipality in Denmark with the largest amount of green electricity on the way, Lolland is expected to have 1400 MW of electricity capacity from wind and solar by 2025. Currently, Lolland produces eight times more renewable energy than the consumption needs, and the production is expected to be 12 times higher by 2030. When large amounts of electricity are not used locally, there is a high risk of bottleneck problems that can be solved by implementing Power-to-X technologies. This is the solution that Ramboll found in a study performed on behalf of Gate 21.

According to Ramboll’s study, it will be possible to establish one or more Power-to-X plants with a total capacity of 300 MW already in 2025. This can significantly reduce the costs of an expensive upgrade of the electricity grid that is currently needed to support the increasing production of renewable energy.

Further, the Danish government has recently decided to expand the gas network to Lolland and explore the opportunities of using biomass from agriculture and waste to produce biogas. When biogas is fed into the natural gas network, CO2 becomes a residual product that can be reacted with hydrogen into either fuel for transportation or additional natural gas.

Three cases to be studied further

Ramboll highlighted three concrete cases that could potentially contribute to the optimisation of the energy system. 

The first case referred to a small 25 MW electrolysis plant in connection with Nature Energy’s proposed biogas plant at Abed. 

The second case referred to a larger e-fuel production of either methane, methanol, or ammonia in Nakskov where CO2 from local production of sugar can be utilised and the surplus heat can be fed into the district heating system. The plant’s capacity can be scaled up to 300 MW, but already at 120 MW all the local CO2 resources would be used. 

The last case pointed to a hydrogen production plant in relation to the planned hydrogen fuelling station close to Fehmarnbelt.    

The study, which also looked at possibilities of reaching Lolland’s climate goals sooner than expected, was part of a larger initiative called Renewable Energy Lolland (REEL), a collaboration between Lolland Municipality, HOFOR, Copenhagen Municipality and Gate 21. Together, they form a solid partnership for disseminating knowledge about renewable energy and exploring the innovative opportunities that lie within Lolland's green energy. 

Read the full report here (only in Danish).

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