Solarvalue has advised that its process of developing solar grade silicon has yielded production costs of US$18 per kilogram after ramp up. The company maintains that this is a cost advantage compared to mainstream production processes since Solarvalue’s production has a capital expenditure of only 30%. In light of its findings, the company has built a pilot production facility for the unidirectional solidification of silicon, which will qualify the output material produced using their proprietary process. The bricks produced at the facility have an approximate weight of 60kg and will be cut into ingots for delivery to potential customers and investors.
Dr. Christian Bornhauser, member of the managing board of Solarvalue, stated, 'In addition to the purities achieved the low production cost are very convincing. This opens attractive margin potentials to companies that invest in our technology. As a first step, it is scheduled to build a production module with an annual capacity of approximately 200 metric tons. Such a production module for polysilicon would ensure profitable production and could be combined with a directly linked ingot production nearby. This production facility is the basis to collect additional experience for the future industrial scale production facility with 2,000 to 3,000 metric tons annual production capacity. The major advantage of our production process lies in the low investment cost and the relatively little floor space required. As an example this production module can be assembled upstream of a cell production line and therefore is qualified to reduce logistic cost at the cell manufacturer, to ensure security of supply, to extend the value chain. We will continue to stay in intensive dialogue with potential investors.”