Løkjelsvatnet or Lykilsvatnet is a regulated lake in the municipality of Etne in Hordaland county, Norway. The 4.51-square-kilometre (1.74 sq mi) lake lies about 10 kilometres (6.2 mi) east of the village of Etnesjøen. Water from the lake falls 400 metres (1,300 ft) vertically in tunnels and pipelines to the Hardeland hydroelectric power station.