Sabah and Labuan operate under Sabah Electricity Sdn Bhd (SESB), a separate utility from Peninsular Malaysia’s TNB and Sarawak’s SEB. Solar installers working in Sabah must understand that SEDA’s NEM 3.0 portal does not apply here. SESB runs its own net metering scheme with its own application process, size caps, and technical requirements. This guide covers what SESB requires and how the Sabah solar process differs from Peninsular Malaysia.
Do Not Submit SEDA NEM Applications for Sabah or Labuan
Applications submitted via nem.seda.gov.my for premises in Sabah or Labuan will be rejected. SEDA’s NEM 3.0 scheme applies only to Peninsular Malaysia under TNB’s network. Sabah and Labuan customers must apply directly to SESB. Contractors who submit SEDA applications for SESB territory waste weeks and damage client relationships.
Malaysia’s Three Solar Jurisdictions
Malaysia has three separate electricity utilities, each with its own solar connection process:
| Region | Utility | NEM Application Route | Legislation |
|---|---|---|---|
| Peninsular Malaysia | TNB | SEDA NEM 3.0 via nem.seda.gov.my | Electricity Supply Act 1990 (Federal) |
| Sarawak | SEB | SEB’s own NEM scheme | Sarawak Electricity Ordinance 2012 (State) |
| Sabah & Labuan | SESB | SESB Net Metering (direct to SESB) | Electricity Supply Act 1990 (Federal) |
Sabah and Labuan are federally governed under the Electricity Supply Act 1990 — the same legislation as Peninsular Malaysia. However, SESB operates as an independent utility with its own distribution network, tariff structure, and solar connection procedures. The federal legislation means equipment standards and general electrical regulations align with Peninsular Malaysia, but the application process is utility-specific.
SESB Net Metering Scheme
How SESB Net Metering Works
SESB’s net metering scheme follows the same conceptual model as NEM 3.0: a bi-directional meter records import and export, and exported kWh are credited against imported kWh. The specific credit rate, rollover rules, and administrative details are set by SESB and may differ from Peninsular Malaysia’s 1:1 offset.
Installers must confirm the following with SESB before project design:
| Parameter | Where to Confirm |
|---|---|
| Export credit rate (RM/kWh or ratio) | SESB Commercial Services |
| Residential system size cap | SESB Commercial Services |
| Non-domestic system size cap | SESB Commercial Services |
| Credit rollover period | SESB terms and conditions |
| Application processing timeline | SESB Commercial Services |
| Required documentation | SESB application form |
SESB Electricity Tariffs
SESB sets its own electricity tariffs for Sabah and Labuan, separate from TNB’s Peninsular Malaysia tariffs. SESB’s generation mix includes thermal power plants and some renewable energy, and tariffs reflect the cost structure of Sabah’s isolated grid.
| Customer Category | Notes |
|---|---|
| Domestic | Tiered tariff structure; confirm current rates with SESB |
| Commercial | Typically higher than domestic; demand charges may apply |
| Industrial | Special industrial tariffs available for large consumers |
Financial modelling implication: Use SESB’s actual tariff schedule (available from SESB or from the customer’s SESB bill) for Sabah solar financial models. Do not apply TNB Peninsular Malaysia tariff rates — they will produce incorrect savings and payback calculations.
Key Takeaway
Sabah’s electricity tariffs and grid characteristics differ from Peninsular Malaysia. Solar financial models for Sabah must use SESB-specific tariffs and account for any grid stability considerations that may affect SESB’s technical assessment.
SESB Application Process
Step 1 — Confirm SESB Territory
Verify the installation address is served by SESB. Sabah and Labuan are the only SESB territories. If the address is in Peninsular Malaysia, the application goes to TNB/SEDA. If in Sarawak, it goes to SEB.
Step 2 — Obtain Current SESB Terms
Contact SESB Commercial Services before starting design. SESB’s net metering terms — size caps, credit rates, and processing timelines — may change. Do not assume they match Peninsular NEM 3.0 parameters.
Step 3 — Prepare Documentation
SESB’s documentation requirements are broadly similar to TNB’s but confirm the exact list with SESB:
| Document | Typical Requirement |
|---|---|
| PE-stamped SLD | Mandatory — BEM-registered PE |
| Inverter datasheet | Must be on Energy Commission approved list |
| Solar panel datasheet | IEC 61215 / IEC 61730 certified |
| Contractor registration | Energy Commission licence for Sabah |
| Customer SESB account details | Account number and supply address |
| System capacity and design summary | kWp, expected annual generation |
Step 4 — Submit to SESB
Submit the application to SESB’s Commercial Services division via their current application channel (portal, email, or regional office). Obtain an application reference number for tracking.
Step 5 — SESB Technical Assessment
SESB reviews the application and may issue a technical assessment with additional requirements. Common considerations for Sabah:
- Grid stability at the connection point (Sabah’s grid is smaller and more isolated than Peninsular Malaysia’s)
- Protection relay requirements for larger systems
- Metering arrangement and bi-directional meter specifications
Step 6 — Installation and Inspection
After SESB connection approval:
- Install the solar system per the approved SLD
- Commission the system and test all protection functions
- Book SESB site inspection
During inspection, SESB verifies:
- Installed capacity matches approved design
- Inverter model and settings match documentation
- Anti-islanding function operates correctly
- Metering arrangement is correct
- Protection devices are installed and functional
- Earthing and labelling comply with regulations
Step 7 — Meter Installation and Billing
After a passing inspection, SESB installs the bi-directional net metering meter. Net metering billing begins in the following billing cycle.
Technical Requirements for Solar in Sabah
Inverter Requirements
Inverters must comply with the same Malaysian standards as Peninsular Malaysia:
- MS IEC 62109-1 (safety) and MS IEC 62109-2 (grid requirements)
- Anti-islanding protection per IEC 62116 (disconnect within 2 seconds)
- Voltage protection: disconnect outside 196V–253V (230V nominal)
- Frequency protection: disconnect outside 47.5–52.0 Hz
Confirm with SESB whether the Energy Commission’s approved equipment list for Peninsular Malaysia is accepted in Sabah, or whether SESB maintains its own approved list.
Protection Relay Requirements
For larger commercial systems, SESB may require a dedicated protection relay at the point of connection. The specific requirements — relay type, settings, and interface — are determined during SESB’s technical assessment. Confirm these requirements before designing the protection scheme.
PE-Stamped SLD
All grid-connected solar applications in Sabah require a Single-Line Diagram stamped by a Professional Engineer registered with the Board of Engineers Malaysia (BEM). The SLD must show:
- Solar array configuration (strings, panels per string, total kWp)
- DC and AC protection devices
- Inverter specifications and protection functions
- Metering arrangement (bi-directional meter location)
- Connection to SESB distribution network
- Earthing and bonding arrangement
Electrical Contractor Licensing
Electrical work on grid-connected solar installations in Sabah must be performed by contractors licensed under the Energy Commission’s framework. Confirm with SESB whether Peninsular Malaysia ST licences are recognised in Sabah, or whether additional Sabah-specific registration is required.
Sabah Solar Market Context
Grid Characteristics
Sabah’s electricity grid is smaller and more isolated than Peninsular Malaysia’s integrated TNB network. Key characteristics:
- Generation mix: primarily thermal (natural gas and diesel) with increasing renewable energy
- Grid stability: smaller grid means voltage and frequency fluctuations may be more pronounced
- Rural electrification: significant off-grid and mini-grid solar deployment in rural Sabah
These characteristics mean SESB’s technical assessment may place greater emphasis on grid impact studies for larger systems than TNB does in Peninsular Malaysia.
Solar Irradiance in Sabah
Sabah’s solar irradiance is comparable to Peninsular Malaysia:
| Location | Approximate PSH/Day | Annual kWh/kWp |
|---|---|---|
| Kota Kinabalu | 4.5–5.0 | 1,400–1,550 |
| Sandakan | 4.5–5.0 | 1,400–1,550 |
| Tawau | 4.5–5.5 | 1,400–1,600 |
| Labuan | 4.5–5.0 | 1,400–1,550 |
Use site-specific irradiance data for financial modelling rather than Peninsular Malaysia averages.
Rural and Off-Grid Solar
Rural Sabah has a significant off-grid solar market. Off-grid systems in rural areas are not subject to SESB’s net metering or grid connection requirements. Government and NGO-funded rural electrification programmes have their own procurement and technical standards.
Design Solar Systems for Sabah with Local Irradiance Data
SurgePV supports Malaysian irradiance datasets including Sabah and Labuan locations — producing yield estimates and financial models using site-specific data rather than Peninsular averages.
See Financial ModellingNo commitment required · 20 minutes · Live project walkthrough
Common Issues for Solar in Sabah
| Issue | Cause | Resolution |
|---|---|---|
| Application submitted to wrong authority | Contractor assumed SEDA NEM 3.0 applies | Confirm utility: SESB for Sabah/Labuan, TNB for Peninsular, SEB for Sarawak |
| Financial model uses wrong tariff | Applied TNB Peninsular rates to SESB customer | Obtain current SESB tariff schedule; use actual customer bill |
| PE stamp not accepted | PE not registered with BEM | Ensure PE holds valid BEM registration; confirm SESB accepts BEM registration |
| Grid impact study required | Large system on weak grid point | Engage PE to prepare grid impact study; submit with SESB application |
| Contractor licence questioned | Holds Peninsular ST licence only | Confirm with SESB whether additional Sabah registration is needed |
| Equipment not on approved list | Specified inverter not recognised by SESB | Check SESB/EC approved equipment list before specifying |
Key Contacts for Solar in Sabah
| Authority | Role | Contact Point |
|---|---|---|
| SESB Commercial Services | Net metering applications, grid connection | sesb.com.my |
| Suruhanjaya Tenaga (ST) | Equipment standards, contractor licensing | st.gov.my |
| Board of Engineers Malaysia (BEM) | PE registration verification | bem.org.my |
Related Malaysia Compliance Guides
- Malaysia Solar Regulations Overview — full country compliance stack
- Malaysia NEM 3.0 Guide — Peninsular Malaysia’s NEM scheme
- TNB Solar Connection Guide — Peninsular Malaysia grid connection
- SEB Sarawak Solar Guide — Sarawak’s separate scheme
- Malaysia SELCO Guide — self-consumption option for high-load facilities
Use solar design software that models Malaysian irradiance data including Sabah locations to produce accurate solar proposals for SESB territory.
Frequently Asked Questions
Can a Peninsular Malaysia solar contractor install systems in Sabah? A contractor licensed under Peninsular Malaysia’s ST Electrical Contractor framework may need additional registration or confirmation from SESB before carrying out work in Sabah. While the Electricity Supply Act 1990 is federal law, SESB may have specific contractor registration requirements. Contact SESB Commercial Services to confirm licensing requirements before accepting Sabah projects.
Does SESB offer a self-consumption (SELCO) option like TNB? SESB may offer a self-consumption-only option for facilities that do not want to export to the grid. Contact SESB directly to confirm whether a SELCO-type pathway exists and what the application process entails. The technical requirements — zero-export configuration, export limitation function — would be similar to Peninsular Malaysia’s SELCO requirements.
What is the solar market like in rural Sabah? Rural Sabah has significant off-grid and mini-grid solar deployment, often through government rural electrification programmes. These systems are not subject to SESB net metering requirements because they are not grid-connected. Installers working on rural electrification projects should confirm compliance requirements with the programme administrator.
Are there tax incentives for solar in Sabah? Malaysia’s federal tax incentives — GITA (Green Investment Tax Allowance) and GITE (Green Income Tax Exemption) — apply nationwide, including Sabah. Applications are submitted to MIDA (Malaysian Investment Development Authority) regardless of location. See the Malaysia Solar Tax Incentives guide for details.
How does Labuan differ from Sabah for solar installations? Labuan is a federal territory served by SESB. The electricity supply and solar connection process for Labuan follows SESB’s procedures. There is no separate utility for Labuan. Contractors should treat Labuan the same as Sabah for application purposes — submit to SESB, not SEDA or TNB.
