As part of an $18.3m project overseen by the city-state’s Energy Market Authority (EMA) in partnership with utility Singapore Power, contracts have been awarded to two consortia to install and test a total of 4.4 MWh in both lithium-ion and redox flow battery storage systems.
Together, the two consortia will receive around $17.8m in grants for the project.
The goal of the trials is to support Singapore’s target of installing 1 GW of solar PV capacity beyond 2020, as well as determining which energy storage technologies function best in Singapore’s hot and humid climate. The tests also aim to help establish technical guidelines for deployment of energy storage systems, such as grid connection and installation safety requirements.
Two test beds will be built in northern and northeastern Singapore, the EMA said, and the trials will run for three years.
Engineering firm the CW Group will lead the lithium battery trial. The firm said it will test a 2.4 MW/2.4 MWh system for "delivering high power applications". Nanyang Technological University will partner on the project.
Red Dot Power will work with the National University of Singapore and Germany-based storage outfit Younicos to test a 0.25 MW/2 MWh vanadium redox flow battery system. Younicos will deliver the test bed, provide control software and handle the grid interface.
EMA head Ng Wai Choong said: "Insights from this test-bed would be useful for Singapore to learn how storage could enhance the stability of our grid, provide quick response capacity and improve operational flexibility.
“We are also exploring how to couple energy storage with solar forecasting capabilities to enable greater deployment of solar in Singapore.”