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Ministry of Trade and Industry
3. Parliamentary replies

Written reply to PQ on encouraging adoption of Battery Energy Storage Systems over diesel generators

8 April 2026

Question:

Mr Ng Shi Xuan: To ask the Deputy Prime Minister and Minister for Trade and Industry whether the Government (i) has plans to encourage adoption of Battery Energy Storage Systems (BESS) over diesel generators and (ii) will consider regulating or otherwise enhancing market transparency of fees of Qualified Persons and Registered Inspectors to manage safety compliance costs associated with the deployment of BESS. 

Written Answer by Deputy Prime Minister and Minister for Trade and Industry Gan Kim Yong

1.                  Battery Energy Storage Systems (BESS) and diesel generators have different uses. 

2.                  For the electricity grid, EMA is facilitating the adoption of BESS to enhance grid resilience, given the introduction of intermittent renewable energy sources such as solar. For example, EMA commissioned Sembcorp to deploy a utility-scale BESS in 2023. 

3.                  Diesel generators are most often used in off-grid applications today, such as night markets. 

4.                  For end-users, both BESS and diesel generators can serve as a source of backup power. BESS may have enough charge for several hours of use, while diesel generators can provide continuous power if there is sufficient fuel. Our approach has been to let end-users decide based on their operational requirements. 

5.                  The fees of Qualified Persons (QP) and Registered Inspectors (RIs) are determined by the market. For the deployment of BESS, SCDF and EMA will continue to ensure that safety standards and technical requirements are met.