Tokuyama will significantly boost the size of the polysilicon plant it is building in Sarawak, Malaysia. The Japanese chemical company is in the midst of constructing a 6,200-metric-ton-per-year facility that will cost close to $1 billion. Now the firm says it will invest an additional $1.2 billion to add 13,800 metric tons of capacity by January 2015. Tokuyama is also boosting capacity at its Japanese plant by 20% to 11,000 metric tons. The firm’s goal is to double its share of the global solar silicon market to 10% while maintaining its 20% share of the semiconductor silicon market.