In Singapore, electrical safety is governed by strict regulatory standards designed to protect people, equipment, and ongoing operations. One of the most critical regulatory requirements for temporary electrical systems is the Supply Installation Licence. Whether the installation is used for construction sites, temporary facilities, outdoor events, or generator-powered operations, this licence ensures that electrical systems are safe, properly tested, and legally approved before being energized.

At RES Engineering Services, we support clients across commercial, industrial, and infrastructure sectors by managing the entire Supply Installation Licence process—from technical assessment to final approval—ensuring full compliance, safety assurance, and uninterrupted project progress.

At RES Engineering Services, we meet many building owners, contractors, and facilities teams who are unsure about the purpose and process behind the Supply Installation Licence. Yet, this licence plays a critical role in keeping a building legally powered, safely operated, and fully compliant with Singapore’s electrical regulations.

Whether you manage a commercial office tower, a pharmaceutical facility, a data centre, an airport project, or a shopping complex, the Supply Installation Licence is the foundational approval that allows your electrical infrastructure to be energised and used. Without it, operations cannot legally begin, and the risks — both safety and financial — can be significant.

In Singapore’s fast-paced construction and industrial sectors, one of the most frequently misunderstood compliance requirements is the Supply Installation Licence. As a practicing LEW and the director of RES Engineering Services, I’ve handled countless temporary supply setups for contractors, builders, event organizers, and facility operators who need short-term electrical power. Over the years, I realized that many clients, especially those running construction sites or temporary facilities, don’t fully understand what a Supply Installation Licence is, when it is needed, or why the Energy Market Authority (EMA) enforces this regulation so strictly.

When businesses set up temporary electrical systems for projects such as construction, testing, commissioning, or generator-based operations, one requirement often gets overlooked—the Supply Installation Licence. At RES Engineering Services, I’ve seen many companies run into delays and compliance issues simply because they weren’t aware that EMA regulations require a licence before energizing any temporary installation. This blog aims to simplify the entire process and help you understand how a Supply Installation Licence keeps your operations safe, legal, and fully compliant. 

In Singapore, every electrical installation that draws power directly from the national grid must operate under a valid Supply Installation Licence issued by the Energy Market Authority (EMA). This licence ensures that electrical systems are designed, tested, and maintained safely in accordance with national electrical standards. At RES Engineering Services, we assist clients in obtaining, renewing, and maintaining their Supply Installation Licence efficiently and compliantly. With over 16 years of professional experience and a team of Licensed Electrical Workers (LEWs), we ensure that every part of your electrical system—from switchgear to transformers—meets EMA’s safety and performance requirements.

At RES Engineering Services, we understand the critical importance of compliance, safety, and efficiency in all electrical projects. Since our establishment in April 2014, we have been committed to delivering expert electrical solutions to industries and construction sites across the region. With over 16 years of experience in Electrical Engineering, our Director leads a team dedicated to ensuring that all installations meet regulatory standards while maintaining optimal performance.

One of the key services we provide is assisting businesses with obtaining a Supply Installation Licence. This licence is essential for industrial clients who wish to legally operate temporary or permanent electrical installations, such as site generators, high-voltage equipment, and industrial machinery connections.

A Supply Installation Licence is a mandatory approval issued by the Energy Market Authority (EMA) under Singapore’s Electricity Act. It certifies that an installation — whether a temporary site generator, high-voltage network, or permanent industrial setup — meets all necessary technical and safety standards.

The licence ensures that the installation is managed by Licensed Electrical Workers (LEWs) and that all testing, protection, and safety mechanisms are in place before operation. This is not just a regulatory requirement; it is a guarantee of safety, reliability, and operational efficiency.

In the world of electrical engineering, safety and compliance form the foundation of every reliable installation. At RES Engineering Services, we understand that one of the most critical approvals for any electrical setup in Singapore is the Supply Installation Licence. This licence ensures that temporary or permanent electrical systems connected to the grid or generator supplies are designed, tested, and operated safely — in full compliance with Energy Market Authority (EMA) regulations.

With our extensive experience and hands-on expertise, we help businesses apply for, renew, and maintain their Supply Installation Licence efficiently, minimizing downtime and ensuring operational continuity.