Largest energy storage system in Southeast Asia installed across two sites on Jurong Island

This will enhance Singapore’s grid resilience.

The Energy Storage System (ESS) is an essential technology to enhance grid reliability in Singapore. By the end of 2022, Singapore is expected to have an ESS that can store and deliver up to 200 MW of power for one hour, which could meet the daily electricity needs of over 16,700 four-room HDB households in a single discharge (based on the average household electricity consumption of a 4-room flat in 2019). In June 2022, the Energy Market Authority (EMA) appointed Sembcorp Industries to build, own and operate the ESS, to enhance the resilience of the energy supply and power grid. The ESS is installed across two sites on Jurong Island and spans two hectares of land. Scheduled to be operational in November 2022, it will be the largest ESS deployment in Southeast Asia, and one of the fastest in its size to be deployed. The ESS functions as a large-scale battery system to store energy and dispense it when needed, to maintain grid reliability. The fast-response nature of the ESS also allows it to actively manage mismatches in electricity supply and demand, and perform regulation services to address second-to-second fluctuations in the power grid, which can mitigate the impact of solar intermittency. In view of the

Location of the two ESS installations on Jurong Island. Image: Sembcorp Industries.

The ESS can store sufficient energy to power the daily electricity needs of over 16,700 four-room HDB households in a single discharge. Image: Sembcorp Industries.

ongoing volatility in the global energy market, it can be used to store energy, to provide reserves to the power grid when needed, freeing up power generation plants to generate more electricity to meet demand. The ESS will use lithium iron phosphate (LFP) batteries. This technology is a proven, safe and high-performing method of renewable energy storage, that is widely used worldwide. Its fast-response time, high energy density and high round trip efficiency which measures the amount of energy stored that can be retrieved later, make it suitable for the purpose of maintaining grid stability. Along with its partners and other government agencies, EMA is also developing policies, regulations and standards to support and guide the deployment of ESSs in Singapore. This includes developing local standards and guidelines on safety considerations for deploying and maintaining ESSs under local operating conditions.