Developing countries have added new large-scale, dry-process capacity to meet demand, thereby reducing the share of smaller, less efficient kilns. Higher energy prices have also encouraged cement producers in developed countries to invest in new more efficient plants or retrofits to improve energy efficiency. In 2006, Japan and India were the most efficient clinker producers (Figure 14). The Japanese method of calculating net energy consumption per tonne of clinker yields a value 2.94 GJ/t clinker for 2006.