[1] The Danish system had changed due to closure of older plants and expansion of renewable energy.

[2] The decision to build the Storebælt HVDC was made in December 2005 and it is based on the feasibility study carried out in 2005.

[4] The interconnection was commissioned in July 2010 and started commercial operations in August 2010 at a cost of DKK 1.29 billion.

[8] The cable's effect on price change in west Denmark is disputed due to the strong connections with Germany and Norway.

[11] In 2015, Energinet started considering a second cable again, due to lower expectations for stationary power in East Denmark.