Spanish state-owned public sector organisation La Fundación Ciudad de la Energía (CIUDEN) has announced it has successfully installed its battery energy storage system (BESS) powered by sodium-sulphur (NaS) technology for its green hydrogen project.
The energy storage facility operates at a temperature of 305°C and has a maximum nominal charge/discharge power of 1,000kW/750 kW. The minimum nominal stored energy is 5,800kWh.
Results attained by multiple tests conducts on receipt of the battery have certified that the operating limits were met.
The batteries were made by Japan-based NaS company NGK, which distributed the cells via Germany-based energy storage firm BASF.
The BESS facility, located in the technology development centre of CIUDEN in Cubillos del Sil, will be used with other energy storage systems to store solar energy from a 2.1MWp photovoltaic plant.
It will also power two electrolysers to produce green hydrogen including one polymer membrane (PEM) and a high-temperature solid oxide electrolysis cell (SOEC).
This will allow for experimentation and self-consumption so that the technology’s performance and efficiency can be evaluated.
CIUDEN will also be able to analyse the NaS BESS’ compatibility with power generation systems, optimise its energy management, and improve the security of supply.
The NaS BESS will be used to reduce costs and experiment with different use scenarios.
This project was built via a tender to the Spanish construction and engineering firm CYMI with a budget of $5.6 million (€4,840,000).
