Which Solar Inverters Are SEDA-Registered in Malaysia (2026)?

Published by Quinn Lai | By InverPower Technical Team

Published · Last updated 

Is there actually a "SEDA-approved inverter list"?

This is the misconception worth clearing up first, because it shapes how you spec equipment. Unlike some markets that publish a single national approved-inverter register, Malaysia does not maintain one public "SEDA-registered inverter" list of models. SEDA is the implementing agency for NEM: it runs the application portal, publishes the NEM guidelines, and certifies the qualified persons (GCPV design and installation certificate holders) behind a project. What makes an inverter acceptable is not a line on a SEDA model list — it is meeting the required standards and clearing approval at the equipment and grid levels. Building your compliance story around that chain, rather than a mythical list, is what keeps a project on schedule.

Which body approves inverters — SEDA, ST, or TNB?

All three play a part, but they do different jobs. The table below is the mental model to keep.

Malaysian inverter compliance chain: standards, ST equipment approval and TNB grid acceptance, with SEDA NEM alongside

What certifications must an inverter have to pass in Malaysia?

A grid-connected inverter in Malaysia is expected to satisfy a stack of safety and grid-interface standards. At minimum that means MS IEC 62109-1 (general safety) and MS IEC 62109-2 (inverter-specific requirements), and anti-islanding compliant with IEC 62116 or IEEE 929 — the system must disconnect within two seconds of losing the TNB supply. Installation and interface requirements reference Malaysian Standards such as MS 1837 (installation of grid-connected PV) and MS 1873, along with IEC 61727 for utility-interface characteristics. The NEM guideline and TNB guidebook also set the protection window an inverter must respect, summarised below.

• Anti-islanding: disconnect within 2 seconds of loss of grid (IEC 62116 / IEEE 929).
• Voltage window: trip if voltage rises above ~110% or falls below ~85% of nominal.
• Frequency window: operate within roughly 47.5–52.0 Hz.
• Reconnection: only after voltage and frequency stay stable for a set stabilisation period (about 5 minutes).

Standard editions and exact clause numbers are revised over time — always confirm the current MS / MS IEC edition against the latest SEDA and TNB documents before you finalise a submission.

Engineer cross-checking a solar inverter type-test certificate against the unit nameplate in Malaysia

How do I verify a specific inverter model before I spec it?

Rather than searching for a model on a non-existent list, verify the paper trail. Confirm the inverter has valid MS IEC 62109-1/-2 and anti-islanding (IEC 62116 / IEEE 929) type-test reports from an accredited laboratory. Where the item is regulated equipment, confirm its ST Certificate of Approval / SIRIM status. Confirm the model is accepted by TNB for your specific connection, and keep every type-test certificate in your NEM and testing-and-commissioning submission pack. The TNB guidebook notes that type-tested inverters meeting the requirements should be deemed to comply without further testing — so a clean certificate set is the fastest route through approval.

What happens if I install a non-compliant inverter?

The project stalls where it hurts most — at grid connection. An inverter that cannot demonstrate the required standards can fail TNB's technical assessment, which means energization is rejected or delayed until the equipment is corrected. Beyond the schedule hit, placing regulated electrical equipment on the market without the required Certificate of Approval is an offence under the Electricity Regulations 1994. In short, compliance is cheaper than a delayed energization.

Neatly installed and energized commercial solar inverters in a Malaysian plant room

So which brands are safe to spec?

The honest answer is brand-agnostic: any inverter that holds the required MS IEC 62109 and anti-islanding certifications and is accepted by TNB is safe to spec. Major grid-tied brands commonly deployed on Malaysian NEM and C&I projects — Sungrow among them — typically carry those certifications, but you should confirm the certificate set for the exact model rather than assume it because of the badge. That verification is where an authorized distributor earns its keep: it holds the current, genuine, certificate-backed units.

Frequently Asked Questions

Is there a SEDA-approved inverter list I can just check?

No public registry of approved inverter models is published by SEDA in the way some other countries do it. SEDA administers the NEM scheme and certifies the qualified persons behind a project. Acceptability comes from meeting the required standards and clearing ST equipment approval and TNB grid acceptance — not from a line on a SEDA model list.

Which body approves inverters — SEDA, ST or TNB?

ST governs electrical-equipment safety and the Certificate of Approval regime; SEDA runs the NEM scheme and certifies GCPV qualified persons; TNB performs the grid-side technical assessment and connection approval. An inverter effectively needs to satisfy all three angles.

What certifications must an inverter have for NEM or grid connection in Malaysia?

MS IEC 62109-1 and -2 for safety, anti-islanding to IEC 62116 or IEEE 929 (disconnect within two seconds of loss of grid), and compliance with the protection window and installation standards such as MS 1837. Confirm the current editions against the latest SEDA and TNB documents.

How do I verify a specific inverter model is compliant before quoting it?

Obtain the model's MS IEC 62109-1/-2 and anti-islanding type-test reports from an accredited lab, confirm ST CoA / SIRIM status where the item is regulated, confirm TNB acceptance for your connection, and keep the certificates in your testing-and-commissioning pack.

What happens if I install a non-compliant inverter?

It can fail TNB's technical assessment, delaying or blocking energization until corrected. Placing regulated equipment on the market without the required Certificate of Approval is also an offence under the Electricity Regulations 1994.

Sources

• SEDA Malaysia — NEM portal — https://www.seda.gov.my/reportal/nem/
• SEDA — Guideline for NEM Rakyat & NEM Gomen (2024, PDF) — https://www.seda.gov.my/reportal/wp-content/uploads/2024/10/20240920-Guideline-for-NEM-Rakyat-and-NEM-Gomen.pdf
• Suruhanjaya Tenaga (ST) — Electrical Equipment / Certificate of Approval FAQ — https://www.st.gov.my/en/eng/web/faqs/listing/35
• Electricity Regulations 1994 (ST, PDF) — https://www.st.gov.my/sites/default/files/2026-02/Electricity-Regulations-1994.pdf
• SIRIM QAS — Guidelines for the Approval of Electrical Equipment — https://www.sirim-qas.com.my/wp-content/uploads/2025/05/guidelines_for_the_approval_of_electrical_equipment_2018-3.pdf
• TNB Technical Guidebook on Grid-interconnection of PV — https://policy.asiapacificenergy.org/sites/default/files/TNB%20Technical%20Guidebook%20on%20Grid-interconnection%20of%20Photovoltaic%20Power%20Generation.pdf

Related InverPower posts:

• Who Is the Sungrow Distributor in Malaysia?
• Where to Source Solar PV Components in Malaysia: An EPCC's Supply Checklist
• Solar DC Cables in Malaysia: What Specs and Certs Do EPCCs Need?