What Should Property Owners Check Before Applying for Solar ATAP?
Before applying for Solar ATAP, property owners should confirm that the electricity account is eligible, the applicant has authority to use the roof or installation area, and the building is technically suitable for solar PV. They should also review the roof condition, structural loading, shading, electricity-consumption profile, proposed capacity, technical- study requirements, provider registration, quotation scope, warranties, insurance and long-term contract obligations.
What Should Be Checked on the TNB Electricity Account?
Solar ATAP participation is connected to the registered electricity consumer and the relevant TNB account. Property ownership alone does not automatically confirm that an account is eligible or that the owner is the registered consumer.
Registered Consumer
Confirm the legal name shown on the latest TNB electricity bill and whether it matches the intended Solar ATAP applicant.
Account Category
Confirm whether the account is domestic or non-domestic and identify the applicable tariff category.
Supply Arrangement
Check whether the premises uses single-phase, three-phase, low-voltage, medium-voltage or high-voltage supply.
Direct Utility Meter
Confirm that the account is connected through an eligible TNB meter and is not merely a tenant sub-meter under a multi-tenanted scheme.
Existing Solar Status
Check whether the account is already registered under NEM, SelCo or another solar or generation arrangement.
Billing History
Review at least several recent bills to understand consumption, maximum demand where applicable and seasonal variation.
- Latest TNB electricity bill is available
- Account number is correct
- Registered consumer name is correct
- Premises address is correct
- Applicant name is consistent
- Domestic or non-domestic status is confirmed
- Tariff category is confirmed
- Supply phase is confirmed
- Supply voltage is confirmed
- Maximum demand is checked where applicable
- Meter is directly registered with TNB
- Account is not an excluded tenant sub-meter
- Existing NEM status is checked
- Existing SelCo status is checked
- Existing generator status is disclosed
- Outstanding account issues are identified
Does the Applicant Have the Right to Use the Roof?
Property owners should confirm who legally controls the roof or other installation area. This is especially important for rented premises, strata developments, jointly owned properties, managed buildings and third-party-owned solar systems.
| Property Arrangement | What Should Be Checked | Possible Supporting Record |
|---|---|---|
| Individually Owned Landed Property | Owner identity, title relationship and authority over the roof. | Ownership record where clarification is required. |
| Rented Property | Whether the tenancy permits permanent equipment installation. | Tenancy agreement and written landlord consent. |
| Strata Property | Whether the roof is a private parcel, accessory parcel or common property. | JMB, MC or relevant management approval. |
| Jointly Owned Property | Whether all required owners agree to the installation. | Written co-owner consent. |
| Commercial Building with Tenants | Who owns the roof, holds the TNB account and receives the savings. | Lease, roof-rights agreement and account-holder authorisation. |
| Third-Party-Owned Solar System | Ownership, access, maintenance, payment and removal obligations. | PPA, solar lease or equipment-ownership agreement. |
- Legal property owner is identified
- Registered TNB consumer is identified
- Roof owner is identified
- Installation-area rights are confirmed
- Tenant restrictions are checked
- Landlord consent is obtained where needed
- Co-owner consent is obtained where needed
- JMB approval is checked where applicable
- MC approval is checked where applicable
- Building-management rules are reviewed
- Maintenance access is confirmed
- Emergency access is preserved
- Roof-repair responsibilities are agreed
- Removal obligations are documented
- Contract-transfer terms are reviewed
- Property-sale implications are reviewed
Is the Roof in Suitable Condition for Solar Panels?
Solar panels may remain on a roof for many years. Property owners should repair major roof defects before installation because removing and reinstalling a solar system later can add cost, delay and warranty complications.
- Roof age is known
- Remaining roof life is assessed
- Existing leaks are identified
- Waterproofing condition is checked
- Roof sheets are inspected
- Roof tiles are inspected
- Fasteners are inspected
- Corrosion is checked
- Cracks and broken tiles are checked
- Previous repairs are identified
- Roof extensions are assessed
- Gutters and drainage are checked
- Roof replacement plans are considered
- Solar-removal costs are discussed
- Waterproofing warranty is documented
- Leak-response responsibility is documented
Can the Building Structure Support the Solar System?
The property should be assessed for the additional loads and forces associated with solar panels, mounting structures, access requirements and local weather conditions. The required level of structural review depends on the building and installation.
| Structural Item | What Should Be Checked | Why It Matters |
|---|---|---|
| Roof Supporting Members | Rafters, trusses, purlins, beams and supporting frames. | They must safely carry the additional system load. |
| Mounting Points | Location, spacing, fixing method and attachment strength. | Poor mounting can cause movement, leakage or structural damage. |
| Wind Effects | Panel position, roof edges, uplift exposure and mounting design. | Wind uplift can impose significant forces on rooftop systems. |
| Roof Material | Metal, tile, concrete, membrane or other roof construction. | Each roof type requires an appropriate mounting method. |
| Additional Equipment | Inverters, cable trays, batteries and support frames. | Heavy equipment may require a suitable wall, floor or foundation. |
| Future Access | Walkways, service areas and safe maintenance routes. | Technicians must be able to inspect and maintain the system safely. |
Does the Roof Receive Enough Unshaded Sunlight?
Roof area alone does not determine solar suitability. Trees, neighbouring buildings, roof equipment, water tanks, parapets, antennas and future developments can reduce generation through shading.
- Usable roof area is measured
- Panel orientation is assessed
- Roof slope is assessed
- Morning shading is checked
- Midday shading is checked
- Afternoon shading is checked
- Seasonal shading is considered
- Nearby trees are assessed
- Neighbouring buildings are assessed
- Parapets are assessed
- Water tanks are assessed
- Antennas and dishes are assessed
- Air-conditioning equipment is assessed
- Roof vents are preserved
- Future extensions are considered
- Future neighbouring development is considered
Partial Shading
Even localised shading may reduce the output of affected panels or strings, depending on the system design.
Future Tree Growth
Trees that do not shade the roof today may affect production after several years of growth.
Roof Obstructions
Equipment and access zones reduce the roof area that can safely be used for panels.
Generation Estimate
The proposal should state the assumed shading loss and expected annual generation.
Does the Proposed System Match the Property’s Electricity Usage?
Property owners should compare the proposed solar capacity with actual electricity consumption, particularly daytime consumption. Solar used directly within the property may have a different financial value from surplus electricity exported under Solar ATAP.
| Usage Factor | What to Review | Why It Affects System Size |
|---|---|---|
| Monthly Consumption | Recent bills across different months. | Shows seasonal and average electricity demand. |
| Daytime Consumption | Loads operating while solar is generating. | Higher daytime demand can improve direct self-consumption. |
| Night-Time Consumption | Loads operating after solar production falls. | These loads normally continue to use grid electricity without a battery. |
| Future Load Changes | EV charging, air-conditioning, machinery or building expansion. | Future demand may change the suitable system capacity. |
| Maximum Demand | Relevant non-domestic demand records and peak timing. | Solar may not reduce maximum-demand charges in every billing period. |
| Expected Export | Estimated surplus solar sent to the grid. | Excessive exports may have a different value from self-consumed solar. |
- At least several electricity bills are reviewed
- Annual consumption is calculated
- Daytime load is estimated
- Night-time load is estimated
- Weekday usage is reviewed
- Weekend usage is reviewed
- Seasonal variation is reviewed
- Maximum demand is reviewed where applicable
- Future EV charging is considered
- Future air-conditioning is considered
- Future machinery is considered
- Building expansion is considered
- Expected self-consumption is stated
- Expected export is stated
- Export-credit assumptions are stated
- System oversizing risk is reviewed
Are Technical Studies or Connection Approvals Required?
The proposed capacity, consumer category, supply phase and voltage level determine whether a Connection Confirmation Check, Connection Assessment Study or Power System Study is required before the Solar ATAP application.
| Project Category | General Published Threshold | Check Before Applying |
|---|---|---|
| Domestic Single-Phase | Up to 5 kW | Confirm the standard connection route and proposed capacity. |
| Domestic Single-Phase | More than 5 kW | Confirm CCC requirements and approval before eATAP submission. |
| Domestic Three-Phase | Up to 15 kW | Confirm the standard connection route and proposed capacity. |
| Domestic Three-Phase | More than 15 kW | Confirm CCC requirements and approval before eATAP submission. |
| Non-Domestic LV or MV | More than 72 kW | Confirm CAS requirements, cost, validity and approval conditions. |
| High-Voltage Project | Based on the applicable connection category | Confirm PSS requirements and technical conditions. |
- Applicable capacity limit is confirmed
- DC capacity is confirmed
- Inverter AC capacity is confirmed
- CCC requirement is confirmed
- CAS requirement is confirmed
- PSS requirement is confirmed
- Study cost is stated
- Study payment responsibility is stated
- Study validity is checked
- Network-upgrade conditions are reviewed
- Protection requirements are reviewed
- Meter requirements are reviewed
- Application fee is stated
- Amendment fees are stated
- Approval timeline is explained
- Post-approval responsibilities are explained
What Should Property Owners Check About the Solar Provider?
The company preparing the Solar ATAP application should be appropriately registered for the required role. Property owners should also verify the electrical contractor, Competent Person, Qualified Person and parties responsible for structural or professional work.
Company and Registration Checks
- Current SSM registration
- SEDA Malaysia RPVSP status
- Electrical-contractor registration
- Relevant Competent Person appointment
- Qualified Person appointment
- Professional Engineer involvement where required
- Insurance coverage
- Documented local contact details
Project-Delivery Checks
- Site assessment is included
- Roof inspection responsibility is stated
- Structural scope is stated
- eATAP submission responsibility is stated
- Technical-study responsibility is stated
- Installation responsibility is stated
- Commissioning responsibility is stated
- After-sales escalation process is stated
What Should Be Checked in the Solar ATAP Quotation?
A quotation should explain the equipment, capacity, predicted generation, application work, technical studies, installation work, warranties, exclusions and payment terms. Property owners should not compare only the final price.
- Panel manufacturer and model
- Panel quantity
- Panel wattage
- Total DC capacity
- Inverter manufacturer and model
- Total inverter AC capacity
- Mounting-system type
- Monitoring system
- Estimated annual generation
- Shading-loss assumption
- System-loss assumption
- Expected self-consumption
- Expected export
- Solar ATAP billing assumptions
- eATAP application scope
- Application fee treatment
- CCC, CAS or PSS scope
- Technical-study fees
- Bidirectional-meter scope
- Testing and commissioning scope
- Workmanship warranty
- Waterproofing warranty
- Panel product warranty
- Panel performance warranty
- Inverter warranty
- Mounting warranty
- Monitoring support period
- Maintenance scope
- Exclusions
- Payment schedule
| Quotation Area | What Should Be Clear | Warning Sign |
|---|---|---|
| System Capacity | DC and AC capacity with panel and inverter quantities. | Only a broad package name is shown. |
| Generation Forecast | Annual generation and stated loss assumptions. | No shading, degradation or system-loss assumptions. |
| Financial Forecast | Self-consumption and export are modelled separately. | All generation is valued at one retail tariff. |
| Application Scope | Who prepares and submits eATAP documents. | Application work is described only as “included.” |
| Roof Work | Mounting, waterproofing and repair responsibility. | No written leak or roof-damage responsibility. |
| Warranty | Provider, manufacturer, period, exclusions and claim procedure. | Warranty length is stated without claim responsibility. |
What Contract and Ownership Terms Should Be Reviewed?
Property owners may purchase the system directly or use a PPA, solar lease, financing or another ownership arrangement. Each model creates different payment, access, ownership and transfer obligations.
Direct Purchase
Confirm system ownership, payment milestones, warranty transfer and responsibility for long-term maintenance.
Power Purchase Agreement
Review the electricity rate, escalation, contract term, minimum purchase obligations and early-termination conditions.
Solar Lease
Review monthly payments, equipment ownership, roof access, insurance, removal and end-of-term options.
Financing
Review the financed amount, interest, fees, security terms, settlement amount and effect of selling the property.
- Legal system owner is identified
- Contracting company is identified
- Contract period is stated
- Payment amount is stated
- Rate escalation is stated
- Early-termination formula is stated
- Property-sale process is stated
- Contract-transfer process is stated
- Roof-access rights are stated
- Maintenance-access rights are stated
- Insurance responsibility is stated
- Damage responsibility is stated
- Roof-repair procedure is stated
- Temporary removal responsibility is stated
- Permanent removal responsibility is stated
- End-of-term ownership is stated
What Insurance, Safety and Maintenance Items Should Be Checked?
- Installer insurance is confirmed
- Public-liability coverage is checked
- Property insurance implications are checked
- Solar system is declared to the insurer where needed
- Fire-safety access is preserved
- Emergency shutdown is explained
- Isolation points are labelled
- Earthing arrangement is documented
- Surge protection is included
- Anti-islanding protection is included
- Maintenance access is safe
- Cleaning requirements are explained
- Monitoring alerts are configured
- Fault-response contact is provided
- Inverter-replacement planning is discussed
- System inspection schedule is stated
Final Property Owner Checklist Before Applying
Confirm the Account
Verify the registered TNB consumer, tariff, supply type and existing solar-programme status.
Confirm Property Rights
Resolve roof ownership, tenant, co-owner, strata and management approvals.
Inspect the Roof
Identify roof defects, remaining roof life, corrosion, leaks and waterproofing issues.
Assess Technical Suitability
Review structure, mounting, shading, access, electrical connection and proposed equipment.
Check the System Size
Compare the proposed capacity with actual daytime use, expected export and Solar ATAP limits.
Check Technical Approvals
Confirm whether CCC, CAS or PSS is required and who manages it.
Verify the Provider
Review registration, technical appointments, insurance, previous work and after-sales support.
Review the Contract
Check price, scope, exclusions, warranties, ownership, insurance, transfer and termination terms.
- TNB account eligibility is checked
- Applicant authority is confirmed
- Roof rights are confirmed
- Required consents are obtained
- Roof condition is acceptable
- Structural suitability is assessed
- Shading is assessed
- Usable roof area is confirmed
- Electricity history is reviewed
- Daytime load is assessed
- System capacity is justified
- Expected export is stated
- Technical-study requirements are confirmed
- RPVSP status is checked
- Electrical contractor is checked
- Equipment models are stated
- Generation estimate is explained
- Warranty terms are written
- Insurance responsibilities are stated
- Contract-transfer terms are understood
What Questions Should Property Owners Ask Before Signing?
- Is my TNB account eligible for Solar ATAP?
- Does the applicant name match the registered consumer?
- Is this a direct TNB meter or tenant sub-meter?
- Is the account already under NEM or SelCo?
- Do I legally control the installation roof?
- Do I need landlord or management consent?
- Who is responsible for obtaining property approval?
- Has the roof been physically inspected?
- What existing roof defects were identified?
- How much remaining life does the roof have?
- Is a structural assessment included?
- Who is responsible if the roof leaks?
- What waterproofing warranty is provided?
- How was shading assessed?
- What annual generation is forecast?
- What system losses are assumed?
- How much solar will be used directly?
- How much solar is expected to be exported?
- Why is this system capacity recommended?
- Do I need CCC, CAS or PSS approval?
- Who pays for the technical study?
- Is the provider registered with SEDA Malaysia?
- Who is the appointed electrical contractor?
- Who prepares and endorses the technical drawings?
- What is excluded from the quotation?
- Who submits the eATAP application?
- Who handles the bidirectional meter?
- Who responds to a warranty claim?
- What happens when I sell the property?
- What happens if I terminate the contract early?
What Is Solar100’s Role Before a Property Owner Applies?
Solar100
- Supports solar-provider discovery
- Helps organise initial property and account information
- Supports initial quotation comparison
- Helps identify differences in project scope
- Does not inspect or certify the property structure
- Does not approve Solar ATAP applications
Selected Provider and Relevant Professionals
- Confirm project-specific eligibility
- Inspect the site and proposed installation area
- Prepare the design and technical documents
- Coordinate required professional assessments
- Submit and manage the eATAP application
- Remain responsible for their agreed technical and contractual scope
Frequently Asked Questions
What should property owners check before applying for Solar ATAP?
Property owners should check the TNB account, roof ownership, required property consent, roof condition, structural suitability, shading, electricity usage, system capacity, technical-study requirements, provider registration, quotation scope, warranties and contract terms.
Must the property owner also be the TNB account holder?
Property ownership and electricity-account registration are separate. The application should clearly identify the registered TNB consumer and any authority required from the property owner or account holder.
Can solar be installed on a rented property?
A rented property may require a tenancy review, written landlord consent and clear terms covering installation, access, roof repair, contract transfer and system removal.
Do strata property owners need management approval?
Approval may be needed where the roof or installation area is common property or is controlled by a Joint Management Body, Management Corporation or another building-management body.
Should the roof be repaired before installing solar?
Major leaks, corrosion, damaged roofing and roofs near the end of their useful life should generally be addressed before solar installation.
Is a structural assessment always required?
The appropriate assessment depends on the building and installation. Property owners should confirm whether the proposal includes only a visual review, an endorsed mounting drawing or a formal structural calculation.
Should the largest possible solar system be installed?
Not necessarily. The suitable capacity should consider daytime electricity use, expected exports, Solar ATAP limits, roof conditions, technical requirements and financial assumptions.
How can property owners verify a solar provider?
Check the company’s current SSM information, SEDA Malaysia Registered PV Service Provider status, electrical-contractor registration, appointed technical personnel, insurance and written after-sales process.
What roof warranty should be checked?
Check the written workmanship and waterproofing coverage, exclusions, warranty period, inspection procedure and responsibility for removing and reinstalling panels during roof repair.
Does Solar100 inspect properties or approve Solar ATAP applications?
No. Solar100 supports provider discovery and quotation comparison. The selected provider and appointed professionals handle the site assessment, technical design, documents and application scope.
Compare Solar ATAP Proposals for Your Property
Send your latest electricity bill, property location, property type, ownership arrangement, registered account holder, supply type, roof type, roof age, existing solar status and preferred system capacity to compare providers, site-assessment scope, technical requirements, application responsibilities, warranties and after-sales support.
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