NAS batteries will be installed inside the power station of MVM Balance for use in a grid storage battery demonstration project for stabilizing the electricity grid. The project will verify the use of grid storage batteries for storing energy during times of surplus and discharging it when there is a shortage, to boost the earliest social implementation. It will also examine the provision of adjustment capacity to the ancillary service market, which trades energy supply (adjustment capacity) to eliminate gaps in supply and demand of electric energy. The decision to use NAS batteries, which are characterized by their large capacity and ability to discharge electricity over long periods of time, was based on the high evaluation that they are highly reliable as an energy storage technology with an extensive track record, and that their multiple safety designs and equipment monitoring systems meet the installation standards within electric power stations, where strict safety management is required. This is the third order for NAS batteries in Hungary, following an order for a demonstration project at the national Centre for Energy Research *1 and an order for use in renewable energy by consumers*2.
Hungary, which has legislated the achievement of carbon neutrality by 2050, has established a goal of converting 90% of its generated power to low-carbon sources by 2030, and is rapidly introducing renewable energy. Meanwhile, due to the seasonal and weather-dependent nature of electric power output from renewable energy, long-term peak cutting is needed to increase usage and adjust electric power supply and demand. Although pumped storage hydroelectricity*3is suitable for long-term peak cutting, in Hungary, where the terrain is mostly flat, it is difficult to construct pumped storage hydroelectricity stations, which require a difference in elevation, so demand for high-capacity storage batteries such as NAS batteries is increasing as an alternative. The MVM Group has adopted a policy of full-scale advancement of storage battery installation as a measure for adjusting renewable energy supply and demand. With this demonstration project, the MVM Group plans to examine the performance standard for grid storage batteries to be introduced in the future.
NAS batteries are used in various applications including stabilization of renewable energy, electric power demand and supply balancing, and emergency power sources. They have so far been installed in over 250 locations around the world and have a stable operational track record of more than 20 years. NGK will continue to meet the demand for large capacity storage batteries, such as those for grid storage, and contribute to the promotion of renewable energy, the stabilization of electrical energy supply, and the realization of carbon neutrality globally.
