In the first of a two-part interview, Eric Peeters Vice President, Solar Solutions at Dow Corning discusses the need for materials innovation that carries through from c-Si cells to modules and shifts the emphasis away from a cost per-watt basis to a reduction in the cost per kilowatt-hour produced. Peeters also talks to PV Tech about the need to increase the pace of materials innovation, especially in the fields of efficiency and durability.