Swedish solar energy expert Midsummer’s client now produces lightweight flexible solar modules with conversion efficiency at 14 per cent (WK-intern) - Stockholm, Sweden - Midsummer, a leading supplier of production lines for cost effective manufacturing of lightweight flexible CIGS solar cells, today announced that its Asian client now manufactures lightweight flexible solar modules with conversion efficiency of 14 per cent. Midsummer previously announced that they have sold their compact DUO solar cell manufacturing system to an Asian client. The system is in production and it produces flexible solar modules at record levels. The flexible solar module is made of cells from the