Members KU-L
| Member | |
| Kubikenborg Aluminium AB | |
| Kuopion Energia Oy | |
| Kymenlaakson Sähkö Oy | |
| Levensgevaar B.V. | |
| Lidl Suomi Ky | |
| Linthorst FlexPower B.V. | |
| Litgrid AB | |
| Lumina Energy Trading ApS | |
| Luster Energiverk AS | |
| Luossavaara-Kiirunavaara Aktiebolag | |
| Lyse Energisalg AS | |
| Lyse Produksjon AS | |
| Lærdal Energi AS | |