Cement industry is one of the industrial sectors of Taiwan and is also one of the energy intensive industries. In Taiwan, cement industry consumes about 4.4% of total industrial sector’s energy consumption. Therefore, energy saving is the key issues for energy demand management in the industrial sector. Energy efficiency improvements in raw material preparation include: alternative raw material, high-efficiency roller mills, high-efficiency separators and classifiers and efficient meal blending. This paper introduces various issues related to improvement in energy efficiency for cement industry.