Non-residential rechargeable batteries
Most of the non-residential power storage systems sold in 2013 were employed for public facilities in Japan and for peak cut and peak shift adjustments in Germany. In Japan, they were introduced along with solar power generation systems especially in public facilities because of the launch of the "Green New Deal Fund."
Fuji Keizai predicts that the demand for non-residential power storage systems will temporarily decline due to cutback on and abolition of subsidies but it will grow in the medium and long terms due to lowering prices of rechargeable batteries. Outside Japan, there will be growing demand especially in Germany but also in Australia and China, where the "smart city" project is expected to advance, according to the company.
Large-capacity power storage systems are introduced mostly for verification purposes. And the market for them is influenced by the existence of large-scale projects. In terms of power storage systems used for stabilizing the outputs of renewable energy-based power generation facilities, systems for wind power plants have taken a lead.
Fuji Keizai predicts that different power storage systems will be used for different purposes (output smoothing for short-term output adjustment and output leveling for long-term output adjustment) based on their characteristics. And the company expects that lithium-ion (Li-ion) and nickel-metal-hydride (NiMH) batteries will be used for output smoothing while lead-acid, NaS, redox flow and Zebra batteries will be used for output leveling.