From Open Energy Information

Calpak A.E. is the first Greek company since 1976 that deals in solar water heaters and solar panels. Calpak had an unrivalled commercial success in the late 70s, at a time when the potential for solar thermal application was not fully appreciated. By 1985 Calpak had already installed more than 200,000 solar thermal systems in the Greek market and held a domestic market share of 55%. With over 35 years of experience, Calpak is in the forefront for the production of innovative solar thermal equipment at an unparalleled price to quality ratio.