Supply Installation Licence in Singapore | RES Engineering Services 

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.

What is a Supply Installation Licence?

A Supply Installation Licence is a legal authorization granted by EMA that allows a consumer or business to operate an electrical installation connected to the SP Group’s power grid. It is mandatory for all installations exceeding 45 kVA in capacity, including industrial plants, commercial buildings, and large residential developments.

The licence confirms that your installation is:

• Designed by a qualified professional engineer (Electrical)

• Installed and maintained by a Licensed Electrical Worker (LEW)

• Tested and verified to comply with the Electricity (Supply) Regulations

Without a valid Supply Installation Licence, connecting or operating your system is prohibited under Singapore law.

Who Needs a Supply Installation Licence in Singapore

Businesses and facilities that typically require a Supply Installation Licence include:

• Factories and manufacturing plants

• Shopping malls and office towers

• Data centers and telecom facilities

• Hospitals, schools, and government buildings

• Construction sites with temporary high-load equipment

If your total connected load exceeds 45 kVA or if your installation uses High Tension (HT) equipment, you must apply for a Supply Installation Licence before SP Group connects your power supply.

Our Expertise in Supply Installation Licence Applications

Navigating the EMA application process can be complex. At RES Engineering Services, we simplify it for you. Our engineers handle every stage—from initial testing to documentation and submission—ensuring your licence is approved smoothly.

Our process includes:

1. Site Inspection & Load Assessment – We evaluate your electrical system capacity and readiness.

2. Testing & Commissioning – Our in-house testing team performs high-voltage and low-voltage electrical testing using certified instruments.

3. LEW Endorsement—A licensed Electrical Engineer (LEW) signs off on all test results and reports.

4. EMA Submission & Liaison—We compile all documents and coordinate directly with EMA and SP Group for application review.

5. Licence Renewal & Maintenance Support—For existing installations, we handle annual inspection, testing, and renewal documentation to ensure ongoing compliance.

With a strong record of successful applications, RES Engineering Services ensures every client receives their Supply Installation Licence without unnecessary delays or rejections.

Why Electrical Testing Is Crucial for Licence Approval

Before EMA approves your Supply Installation Licence, your entire electrical network must pass a comprehensive Electrical Testing and inspection process.

Our testing covers:

• Insulation Resistance Measurement

• High-Pot (HV) Testing for cables and transformers

• Earth Loop Impedance and Continuity Checks

• Protection Relay Functional Testing

• Switchgear and Transformer Performance Verification

These tests ensure that your system can operate safely and that all protective devices function properly under fault conditions.

At RES Engineering Services, we perform all Electrical Testing in-house, using professional-grade instruments from Megger, Omicron, and Fluke. Our team prepares certified test reports that meet EMA’s documentation standards — ensuring your application proceeds without issues.

Supply Installation Licence Renewal Process

A Supply Installation Licence must be renewed periodically (typically every two years) to maintain connection to the SP grid. Renewal requires proof that the electrical installation remains in good working condition.

RES Engineering Services provides end-to-end renewal support, including:

• Full Electrical Testing and Inspection

• Preventive Maintenance Verification

• Updated LEW Certification and Endorsement

• Submission of results to EMA for approval

Our team keeps track of renewal dates and alerts clients in advance, ensuring continuous compliance and avoiding unnecessary supply interruptions.

Common Reasons for Licence Rejection or Delay

Through years of experience, our engineers have identified key issues that can cause Supply Installation Licence applications or renewals to be delayed:

• Outdated or missing test certificates

• Non-compliance with SP Power Grid connection standards

• Unverified earthing and bonding systems

• Expired or unregistered LEW endorsements

• Lack of documented preventive maintenance

By engaging RES Engineering Services, you eliminate these risks. We review every component, perform on-site verification, and prepare a flawless submission package that meets all EMA expectations.

Our Compliance and Quality Commitment

All our testing and reporting are conducted strictly according to

• IEC Standards (International Electrotechnical Commission)

• EMA Licensing Guidelines

• Singapore Electricity Supply Regulations

Our director personally supervises all testing and documentation, ensuring each report reflects technical accuracy, compliance, and transparency—key components of our reputation in the industry.

Benefits of Partnering with RES Engineering Services

 Full EMA Application Support: From documentation to testing and LEW endorsement.

 In-House Electrical Testing: Fast, accurate, and fully compliant with local standards.

 Experienced Leadership: Over 16 years of direct field experience in electrical testing and licensing.

 Predictive Maintenance Integration: Reduce downtime with preventive inspections.

 Regulatory Confidence: Trusted by EMA inspectors and SP Power Grid auditors.

Our clients include property developers, facility managers, and industrial plant owners who value our efficiency, precision, and compliance-driven service.

Safety and Reliability Beyond Licensing

While obtaining a Supply Installation Licence is the first step, maintaining it requires consistent safety practices. RES Engineering Services provides long-term electrical maintenance and testing to help you avoid faults, overheating, or insulation breakdown.

Our ongoing support includes:

• Annual testing programs

• Thermographic inspections

• Condition monitoring of transformers and switchboards

• Periodic report submission for compliance tracking

This proactive approach helps clients uphold the highest standards of electrical safety while ensuring uninterrupted EMA licence validity.

Conclusion: Partner with RES for a Smooth Supply Installation Licence Journey

Securing your Supply Installation Licence is not just about paperwork—it’s about demonstrating safety, reliability, and technical excellence. With RES Engineering Services, you gain a trusted partner who understands every detail of the EMA process.

From initial Electrical Testing to final LEW certification, we manage your licensing journey with precision and professionalism. Our proven expertise ensures your facility remains compliant, safe, and ready for continuous operation under Singapore’s strict electrical regulations.

Contact RES Engineering Services today to begin your Supply Installation Licence application or renewal—and power your operations with confidence and compliance.