Original project Swindlit was aimed at construction of the wind farm in the Baltic Sea and ensuring the electricity transmission to Sweden and Lithuania.

The participants of this project were interested also in Kruonis Pumped Storage Plant as an accumulator of variable wind energy.

In August 2006, the Lithuanian and Swedish transmission grid operators Lietuvos Energija and Svenska kraftnät agreed to launch a feasibility study of a possible interconnector.

[1] In February 2007, Lietuvos Energija and Svenska Kraftnät signed an agreement with Swedish consulting company SWECO International on preparation of feasibility study.

[2] On 9 July 2009, Lietuvos Energija, Latvenergo and Svenska Kraftnät signed a memorandum of understanding on the NordBalt project.