Sole S.A. was the first Greek company to be involved in the renewable energy sources sector, since its foundation in 1974. Until today, it still maintains its leadership in the European solar water heater market exporting 70% of its production all over the world.

Sole produces solar thermal collectors, thermosiphon solar water heaters, compact solar water heaters and undertakes projects for sanitary or process hot water, room heating, pool heating and Solar Air Conditioning.