Malaysia’s rooftop solar landscape entered a new era following the conclusion of the Net Energy Metering (NEM 3.0) scheme. Solar Accelerated Transition Action Programme (Solar ATAP) is the current framework for grid-connected rooftop solar, introduced by the Ministry of Energy Transition and Water Transformation (PETRA) and implemented through the Energy Commission (Suruhanjaya Tenaga) and SEDA Malaysia.
For landed homeowners, Solar ATAP provides a framework to generate electricity for their own consumption while allowing eligible excess solar generation to be exported to the TNB grid for bill credits. However, the way exported electricity is credited, together with system capacity limits, means homeowners should approach solar system sizing with a focus on actual household consumption rather than simply maximizing installed capacity.
1. What Is Solar ATAP?
Solar ATAP is Malaysia’s current programme for grid-connected rooftop solar installations. It operates under a 10-year contract period and allows eligible electricity consumers to generate solar power for their own consumption while exporting excess generation to the utility grid for electricity bill credits.
Compared with the previous NEM framework, Solar ATAP uses a different approach to capacity allocation and export crediting. Eligibility and connection remain subject to the applicable programme requirements and the technical capacity of the electricity distribution network.
For homeowners, the key consideration is therefore not simply how many solar panels can fit on the roof, but how much of the electricity generated can be effectively used within the home.
2. Solar ATAP vs. NEM 3.0: Key Policy Differences
Understanding how Solar ATAP differs from NEM 3.0 is important when evaluating the potential return on investment of a rooftop solar system.
| Feature | NEM 3.0 (Ended June 2025) | Solar ATAP (Launched January 2026) |
|---|---|---|
| Programme Structure | Operated under defined programme allocations | Current rooftop solar framework, subject to programme and grid requirements |
| Export Crediting | Net Energy Metering mechanism | Exported electricity is credited against the applicable Energy Charge |
| Credit Period | Subject to NEM programme rules | Export credits are applied according to the applicable Solar ATAP billing rules |
| Max Capacity (Single-Phase) | 4 kWp | Up to 5 kWp |
| Max Capacity (Three-Phase) | 12.5 kWp | Up to 15 kWp |
| Bill Offset Scope | Net energy value under NEM rules | Primarily the Energy Charge component of the electricity bill |
Important: Solar ATAP should not be viewed simply as NEM 3.0 with higher system limits. The export-crediting mechanism and billing treatment are different, which makes proper system sizing particularly important.
3. How Bill Credits Work Under Solar ATAP
The economics of a home solar system under Solar ATAP begin with self-consumption.
Direct Solar Use:
Electricity generated by your solar panels is first used by appliances operating in your home, such as air conditioners, refrigerators, washing machines, water heaters and EV chargers. Using solar electricity directly reduces the amount of electricity you need to purchase from TNB.
Exported Surplus:
When your solar system generates more electricity than your home is consuming at that moment, the excess electricity can be exported to the TNB grid, subject to Solar ATAP requirements.
Energy Charge Credits:
Eligible exported electricity is credited against the applicable Energy Charge under the Solar ATAP billing mechanism.
This means homeowners should not assume that every component of their TNB bill can be eliminated through solar exports. Other applicable charges, fees, taxes or adjustments may still remain payable according to the prevailing electricity tariff.
Key Takeaway for Homeowners
The best financial outcome generally comes from using as much of your solar generation as possible within your home, rather than installing a system substantially larger than your actual consumption simply to maximize electricity exports.
This is why household consumption patterns are important when determining the appropriate solar system size.
4. Eligibility Requirements
To qualify for Solar ATAP, a residential premise generally needs to meet the applicable programme and electricity-account requirements, including:
- Active TNB Domestic Account: The applicant must have an eligible residential electricity supply account.
- Eligible Premise and Metering Arrangement: The installation must meet the programme’s requirements for the electricity supply and premise.
- No Conflicting Programme Registration: Existing participation in another rooftop solar programme, such as NEM or SELCO, may need to be terminated or otherwise resolved before participating in Solar ATAP, depending on the applicable programme rules.
Homeowners should have their appointed SEDA-registered PV service provider confirm eligibility before proceeding with installation.
5. Strategic Sizing Guidelines for Homeowners
Solar system design should focus on matching the system to your household’s electricity consumption, roof conditions and daily usage pattern.
High Daytime Usage
Homes where occupants use significant amounts of electricity during daylight hours can generally make better direct use of solar generation.
Examples include:
- Air conditioning used during the day
- Working from home
- Pool pumps
- Water heaters
- Washing machines and other daytime appliances
- EV charging during solar production hours
The more solar electricity you consume directly, the less electricity you need to purchase from TNB.
Low Daytime Usage
If your household is usually empty during working and school hours, a larger portion of your solar generation may be exported to the grid.
In this situation, homeowners should consider:
- Installing a right-sized system based on actual household consumption.
- Shifting suitable electricity usage to daytime hours where practical.
- Considering a Battery Energy Storage System (BESS) if storing daytime solar energy for evening consumption makes financial and practical sense.
The objective should be to design a system that fits your household’s actual electricity needs rather than simply maximizing the number of panels installed.
How to Apply
1. Review Your Electricity Consumption
Collect your previous 6 to 12 months of TNB bills to understand your household’s electricity consumption and identify potential daytime usage.
2. Appoint an RPVSP
Engage a SEDA-Registered PV Service Provider (RPVSP) to assess your property, review your electricity consumption and prepare the required technical documentation, including the applicable single-line diagram (SLD).
3. Solar ATAP Application
Your appointed service provider will guide you through the Solar ATAP application process and the required submission through the applicable eATAP process.
4. Technical and Grid Requirements
The proposed system must comply with Solar ATAP technical requirements and the applicable TNB connection requirements. Additional technical assessment or verification may apply depending on the proposed system size and electricity supply configuration.
5. Installation, Metering & Commissioning
Once the necessary approvals and requirements have been completed, the solar PV system can be installed and commissioned in accordance with the programme requirements. Where required, TNB will arrange the appropriate bi-directional metering so that eligible electricity exported to the grid can be recorded for billing purposes.
Your Solar ATAP participation then operates according to the applicable programme terms and the 10-year contract period.
Final Takeaway
Solar ATAP changes the way Malaysian homeowners should think about rooftop solar.
The goal is no longer simply to install the largest system possible and maximize electricity exports. Instead, homeowners should focus on right-sizing the system, increasing daytime self-consumption and understanding how exported electricity is credited under the current programme.
For many households, a properly sized solar PV system can reduce dependence on grid electricity and lower long-term electricity costs. The actual savings, however, depend on factors such as household consumption, daytime usage, system size, roof conditions, electricity tariffs and the amount of solar electricity that is consumed directly.