SCDF MAA & Solar PV Installation

SCDF MAA submission solar panel

SCDF MAA Application for Solar Panel Installation: The Complete Singapore Fire Safety Guide (2025 Edition)

 

1. Executive Summary: The Intersection of Green Energy and Urban Fire Safety

 

The aggressive pursuit of renewable energy targets under the Singapore Green Plan 2030 has catalyzed a transformation in the urban landscape, turning the rooftops of the nation’s industrial, commercial, and residential buildings into distributed power plants. 

Solar photovoltaic (PV) technology, once a niche application, has become ubiquitous. However, this deployment of high-voltage electrical infrastructure atop high-density buildings introduces a unique risk profile that demands rigorous regulatory oversight. 

In Singapore, the custodian of this safety framework is the Singapore Civil Defence Force (SCDF), which enforces strict codes to ensure that the drive for sustainability does not compromise the fundamental fire safety of the built environment.

This comprehensive research report serves as the definitive operational manual for navigating the SCDF’s regulatory landscape for solar PV installations. 

It focuses specifically on the Minor Additions and Alterations (MAA) Lodgement Scheme, the primary administrative vehicle for retrofitting solar panels onto existing buildings. 

Beyond a mere checklist of rules, this document explores the engineering logic behind the Code of Practice for Fire Precautions in Buildings (Fire Code 2023). 

The legal responsibilities of the Qualified Person (QP), the intricate transition to the CORENET X digital submission platform, and the long-term maintenance obligations that bind building owners.

By synthesizing data from SCDF circulars, the Fire Safety Act, Singapore Standards (SS 638), and industry best practices, this report provides a granular analysis of the compliance ecosystem. 

It addresses the nuanced requirements for roof access, the critical “Class C” fire resistance standards for PV modules, and the emerging challenges posed by energy storage systems (ESS). 

It is designed for developers, facility managers, engineers, and safety professionals who require a nuanced understanding of how to legally and safely integrate solar energy into Singapore’s complex urban fabric.1

2. The Regulatory Ecosystem: SCDF, BCA, and The Fire Safety Act

 

To successfully execute a solar PV project in Singapore, one must first comprehend the legislative hierarchy that governs building works. 

The process is not merely a bureaucratic hurdle; it is a statutory requirement grounded in the Fire Safety Act, designed to protect life and property in one of the world’s most densely populated cities.

 

2.1 The Primacy of the Fire Safety Act

 

The Fire Safety Act is the overarching legislation that empowers the SCDF to regulate all fire safety works in Singapore. 

Under this Act, any addition, alteration, or change of use to a building that affects its fire safety provisions must be approved by the Commissioner of the SCDF. 

Solar PV installations typically fall under this purview because they fundamentally alter the building’s risk profile. 

They introduce new ignition sources (DC arc faults), add static load to the roof structure (potentially affecting collapse time in a fire).

Most critically, can obstruct the access routes required by firefighters to vent smoke or attack a fire from above.5

The Act mandates that these works cannot be undertaken by laypersons. They require the supervision of a Qualified Person (QP)

The definition of a QP is specific: they must be a Registered Architect or a Professional Engineer (PE) registered with the respective statutory boards in Singapore. 

For solar PV projects, the QP is typically a PE (Civil/Structural) for the mounting, or a PE (Electrical) for the system design.

Often working in tandem with a Registered Architect who ensures compliance with spatial planning and escape routes.2

 

2.2 The Role of the Qualified Person (QP)

 

The QP is the linchpin of the entire regulatory process. They bear the full legal liability for the design and submission. 

The solar installer—the commercial entity selling the panels—acts as the contractor, but they cannot legally submit plans to the SCDF. 

Only the QP has the authority to log into the CORENET system and make a submission.

The responsibilities of the QP extend far beyond simply uploading drawings. They must:

  • Assess the Existing Building: Verify that the existing fire safety measures (e.g., hydrants, rising mains) are functional and that the addition of solar panels will not compromise them.
  • Design for Compliance: Ensure the layout meets the strict setbacks and clearances of Fire Code 2023 Clause 10.2.
  • Endorse Plans: Digitally sign the plans, certifying that they comply with all relevant codes.
  • Supervise Works: Oversee the installation to ensure it matches the approved design.
  • Apply for Inspection: Engage a Registered Inspector (RI) upon completion to certify the works.8

The distinction between the QP and the contractor is vital. A common pitfall for building owners is assuming the solar vendor handles “everything.” 

While the vendor may facilitate the process, the legal sign-off comes from the independent QP, who has a statutory duty to the SCDF that supersedes their commercial relationship with the client.

 

2.3 The Minor Additions and Alterations (MAA) Lodgement Scheme

 

The SCDF recognizes that not all construction works carry the same level of risk. 

A full “Plan Approval” process, used for constructing a new skyscraper, is overly burdensome for installing a simple rooftop solar array. 

To address this, the SCDF established the Minor Additions and Alterations (MAA) Lodgement Scheme.

The MAA scheme is a simplified regulatory pathway designed for works that are limited in scope and do not adversely affect the building’s structural integrity or primary fire protection systems. 

For solar PV installations on existing buildings, the MAA is the standard submission route.

Key Characteristics of MAA:

  • Speed: Unlike full plan approval, which can take weeks for review, an MAA submission is “lodged.” This means strictly speaking, it is a notification of intent backed by professional certification.
  • Lodgement vs. Approval: In an MAA, the QP certifies compliance. The SCDF accepts this certification on the basis of trust and professional accountability. The SCDF does not typically conduct a detailed pre-construction review of MAA plans, reserving their resources for spot checks and the final RI inspection. This places a massive responsibility on the QP to get it right the first time; if an RI later finds the “lodged” plans were non-compliant, the rectification costs fall heavily on the project team.2
  • Eligibility: To qualify for MAA, the works must be “minor.” For solar, this generally means rooftop installations that do not involve constructing new habitable floor area or complex structural modifications. If the solar project involves building a massive new steel canopy that effectively creates a new storey, it might be pushed into the full “Plan Approval” stream.13

 

2.4 Exemptions: The Residential Landscape

 

A critical nuance in the regulations is the exemption for certain residential properties. 

The SCDF has adopted a risk-based approach, determining that the fire risk of a single landed home is sufficiently contained to not require the heavy administrative machinery of an MAA submission.

Scope of Exemption:

Fire safety plan submission (including MAA) is exempted for solar PV installations on:

  • Detached Houses (Bungalows)
  • Semi-Detached Houses
  • Terrace Houses

Conditions for Exemption:

  1. The house must not exceed 3 storeys or levels, including the basement and attic.
  2. The house must not share any facility (e.g., car parks, clubhouses, common corridors) with any other building.14

Analytical Insight: This exemption is a significant deregulatory move to encourage consumer adoption of solar. 

However, it is frequently misunderstood. “Exempt from SCDF MAA” does not mean “exempt from all regulations.”

  • Structural Safety: The homeowner must still ensure the roof can hold the weight (BCA requirements).
  • Electrical Safety: The system must still be installed by a Licensed Electrical Worker (LEW) and meet EMA standards.
  • Fire Safety: While no plan is submitted, the installation should still practically adhere to safety distances to prevent fire spread to neighbors, although the SCDF does not police this via plan submission for these specific homes.
  • Cluster Housing: A crucial distinction: “Cluster housing” or strata-landed developments often share a basement car park. These do not qualify for the exemption and must undergo the full MAA process because a fire in one unit could threaten the shared infrastructure.14

3. Technical Compliance: Fire Code 2023 Clause 10.2 Deep Dive

 

The technical core of any solar PV MAA submission is Clause 10.2 of the Fire Code 2023

This section of the code was specifically written to address the unique hazards of photovoltaic systems. 

It is not merely a set of dimensions; it is a tactical doctrine for firefighting on electrified roofs. 

A failure to comply with even one sub-clause here is the primary cause of inspection failure, leading to costly re-works.

 

3.1 The Tactical Logic of Roof Access

 

To understand the rules, one must visualize the firefighter’s task. When a building is on fire, the roof is a strategic asset. 

Firefighters may need to access the roof to perform “vertical ventilation”—cutting holes to release superheated gases and smoke, thereby improving visibility and survivability for occupants and rescue teams below. 

They may also use the roof to prevent fire spread to adjacent structures. Solar panels, which are slippery, fragile, and permanently electrified during the day, represent a massive obstruction to these operations.

Therefore, the SCDF mandates specific “sterilized” zones on the roof where no panels can be placed. These are not arbitrary numbers; they are calculated based on the width of a firefighter in full gear carrying equipment.

Regulatory Requirements for Access:

  • Exit Staircase: At least one exit staircase must extend to the roof level. This is the primary attack route.
  • Access Hatches: In many older industrial buildings (Purpose Group VI or VIII), roof access is via a cat ladder and a hatch. The Fire Code requires that if a hatch is the means of access, it must be readily accessible and have a minimum clear width of 1000mm (1 meter) in diameter.1
  • Insight – The Retrofit Trap: Many older buildings have standard 600mm x 600mm hatches. When retrofitting solar, the QP must check this. Installing solar triggers the requirement to upgrade the hatch to 1000mm. This involves structural cutting of the roof slab, reinforcement, and installing a new custom hatch—a cost driver often missed in initial solar ROI calculations.
  • Perimeter Access (The “Gangway”):
  • Roof with Parapet (>= 900mm height): A clear width of at least 1.5 meters must be maintained along the perimeter. The parapet acts as a fall guard, so a narrower path is acceptable.
  • Roof without Parapet (or < 900mm height): A clear width of at least 2.5 meters is required.15
  • Rationale: Without a high parapet, the risk of a firefighter falling off the edge in a smoke-filled, low-visibility environment is high. The wider 2.5m path provides a safety buffer.
  • Clearance Around Openings: A clearance of 3 meters must be provided around the access hatch or exit door.14 This is the “staging area” where firefighters exit the stairwell and deploy their equipment before moving to the perimeter. Blocking this with panels is a critical safety violation.

 

3.2 Fire Resistance of PV Modules (IEC 61730-2)

 

The solar panels themselves must not become fuel for the fire. The SCDF strictly regulates the material properties of the modules.

The Class C Requirement:

The Code mandates that PV modules shall meet a minimum of Class C for both spread of flame and burning brand tests, in accordance with IEC 61730-2.1

  • IEC 61730-2 (Photovoltaic Module Safety Qualification): This international standard tests the module’s durability and fire resistance. The “Burning Brand” test involves placing a burning wooden block on the panel to see if it ignites or burns through. The “Spread of Flame” test measures how far flame travels across the surface.
  • Documentation Rigor: The QP cannot simply assume a panel is compliant. They must obtain the specific Certificate of Conformity (CoC) or test report for the exact model of panel being installed. A common inspection failure occurs when the installer swaps the specified “Model X” (which has the Class C cert) for a newer, cheaper “Model Y” (which has not yet been tested or certified). The RI will reject this on site.1

 

3.3 Array Size Limitations and Separation

 

To prevent a runaway fire that consumes the entire roof, the SCDF employs a strategy of compartmentalization.

  • Maximum Sub-Array Size: The PV installation must be divided into sub-arrays, with each sub-array limited to a maximum size of 40 meters by 40 meters.14
  • Separation: While the code specifically mandates the perimeter access, the implication of the 40m limit is that large roofs must be broken up by access paths (the 1.5m/2.5m aisles).
  • Tactical Implication: A standard fire hose has an effective reach. Limiting the array to 40m ensures that a firefighter standing on the perimeter aisle can reach the center of the array with a hose stream. If the array were 100m wide, a fire in the center would be physically unreachable.

 

3.4 Integration with Building Systems

 

Solar panels must coexist with the building’s existing mechanical and electrical (M&E) ecosystem.

  • Ventilation Clearance: PV modules must have a minimum horizontal clearance of 500mm from any ventilation system on the roof (e.g., smoke extraction fans, air wells, skylights).1
  • The Chimney Effect: If panels overhang or crowd a smoke vent, the hot smoke exiting the building could be deflected back down, or the intense heat could shatter the glass panels, adding debris to the hazard. The 500mm buffer ensures the vent can operate efficiently.
  • Lightning Protection: The solar array acts as a giant metal conductor on the highest point of the building. It must be integrated into the building’s lightning protection system. While this is primarily an electrical standard (SS 555), SCDF RIs check this because a lightning strike is a primary ignition source for rooftop fires.16

 

3.5 Emergency Disconnection: The “Fireman Switch”

 

Perhaps the most debated and critical active safety feature is the emergency isolation system.

  • Requirement: A manual emergency shut-off system must be provided to disconnect the PV modules.
  • Location: This actuator must be located on the AC side (typically where inverters are placed) and at the Fire Command Centre (FCC). If the building has no FCC (common in smaller industrial sites), it must be at the main fire alarm panel or a location agreed upon by the SCDF (e.g., the guardhouse or main lobby).14
  • Functionality: Upon activation, the system must isolate the inverter output from the building’s main grid.
  • The “DC Danger” Context: It is vital to understand that this switch usually kills the AC connection. The DC cables running from the panels to the inverter remain energized as long as the sun is shining. The voltage can be up to 1000V DC. This is why strict cable containment (metal conduits) is required by SS 638—to mechanically protect these live DC lines during a fire. Recent technological advancements (like Rapid Shutdown Systems or Microinverters) can de-energize the DC side, but the baseline SCDF requirement currently focuses on the AC isolation point to prevent grid back-feeding.1

4. Structural and Electrical Interdependencies (BCA & EMA)

 

While the SCDF MAA focuses on fire, the QP must simultaneously satisfy two other potent agencies: the Building and Construction Authority (BCA) and the Energy Market Authority (EMA). 

These requirements are often checked in parallel or integrated into the overall project compliance strategy.

 

4.1 Structural Loading (BCA Requirements)

 

Solar panels add “dead load” (the weight of the panels and racking) and “wind load” (uplift forces during storms) to the roof.

  • Structural Approval: If the panels are mounted on an existing roof, the QP (Structural) must verify the roof can take the weight.
  • The 2.5m / 10sqm Rule: BCA plan approval is specifically required if:
  • The panels are raised on a frame higher than 2.5 meters.
  • The panels form a shelter (like a car park shade) exceeding 10 square meters.
  • Structural strengthening is required to support the panels.
  • Interaction with SCDF: If the panels are raised high enough to create a “habitable space” underneath (e.g., a roof terrace), the SCDF may view this as creating a new storey, potentially triggering full Plan Approval rather than MAA, and requiring additional fire protection (sprinklers) underneath the canopy.16

 

4.2 Electrical Safety Standards (SS 638)

 

The SCDF Fire Code explicitly references SS 638 (Code of Practice for Electrical Installations) as the governing standard for the electrical components of the PV system.1

  • Why SS 638 Matters for Fire: Electrical faults are the #1 cause of solar fires. SS 638 dictates:
  • Cable Ratings: Cables exposed to the sun must be UV-resistant. Ordinary PVC cables will crack and degrade, leading to arcs.
  • Mechanical Protection: DC cables must be run in metal trunking or conduits to protect them from physical damage (e.g., rodents, maintenance works) and to contain any sparks.
  • Earthing: Proper bonding of the frames prevents static buildup and ensures fault currents have a safe path to ground, tripping protection devices before a fire starts.
  • The Licensed Electrical Worker (LEW): While the QP handles the SCDF submission, an LEW must design and endorse the electrical single-line diagram (SLD). The LEW submits to SP Group/EMA, but the QP includes the LEW’s design in the SCDF MAA to show the location of the isolation points.8

5. The Digital Submission: Navigating CORENET X

 

The administrative mechanism for SCDF submissions is undergoing a generational shift. The industry is transitioning from CORENET 2.0 to CORENET X

This change is profound, moving from a document-centric to a data-centric workflow.

 

5.1 The Shift to CORENET X

 

Historically, QPs submitted separate PDF/CAD files to URA, BCA, and SCDF via CORENET 2.0. The new CORENET X platform integrates these into a “One-Stop” submission environment.

  • The Gateway Process: CORENET X introduces three key gateways:
  1. Design Gateway: Conceptual approval.
  2. Construction Gateway: Detailed technical clearance.
  3. Completion Gateway: Final inspections for TOP/CSC.
  • Direct Submission Process (DSP): Recognizing that a solar MAA is a small project, CORENET X offers a Direct Submission Process (DSP). This allows the QP to bypass the complex Design Gateway and submit directly for technical clearance/lodgement. This is critical for keeping solar project timelines short.20

 

5.2 The MAA Submission Workflow (Step-by-Step)

 

For a typical solar PV MAA, the workflow on the new platform (or the legacy platform during transition) is as follows:

  1. Project Registration: The QP creates a project profile. If it is an existing building, they link it to the existing Building File Reference Number.
  2. Team Composition: The QP (Architect/PE) is the lead submitter. They may add the LEW or Solar Specialist as project members.
  3. Document Preparation:
  • Form MAACFSW: The specific electronic form for Minor Additions and Alterations.
  • Drawings: Site Plan, Roof Layout (showing 1.5/2.5m clearances), Single Line Diagram (showing Emergency Switch).
  • QP Declaration: A digital affirmation that the design complies with Fire Code 2023.
  • Owner’s Authorization: A letter from the building owner authorizing the QP.
  1. Submission & Fee Payment: The QP uploads the package. The system calculates the fee (typically $90 – $160 depending on the exact scope and whether it is an amendment or new lodgement).12 Payment is made via PayNow or GIRO within the portal.
  2. Digital Checksums: Once lodged, the system generates a digital checksum. This “locks” the approved drawings. Any modification on site requires a formal amendment submission; you cannot just “mark up” the drawings on site anymore.23
  3. Notice of Approval (NOA): For MAA, this is often an automated acknowledgement of lodgement. This allows works to commence (or strictly speaking, confirms the design is accepted for record).

 

5.3 Common Submission Errors

 

  • Missing Dimensions: Failing to explicitly dimension the 3m clearance around the hatch on the plan.
  • Wrong Purpose Group: Incorrectly classifying the building (e.g., calling a factory “General Industrial” when it is “High Hazard”) affects the fire protection requirements.
  • Incomplete SLD: The Single Line Diagram must clearly show the “Fireman Switch” location. A generic SLD without this specific fire safety component will be queried.24

6. Inspection, Commissioning, and the Registered Inspector (RI)

 

The SCDF relies on a system of “self-regulation with audit.” 

The Registered Inspector (RI) is the deputized auditor who ensures the reality on the roof matches the PDF on the server.

 

6.1 The RI’s Mandate

 

The RI is a senior professional (Architect or PE) independent of the design QP. 

Their job is to inspect the completed works and certify compliance before the Fire Safety Certificate (FSC) is issued or updated.

  • Independence: The QP who designed the solar system cannot be the RI who inspects it. This separation of duties prevents conflict of interest.25

 

6.2 The Inspection Protocol (Simulated Walkthrough)

 

When the RI arrives on the roof, they follow a rigorous checklist (Form 1):

  1. Tape Measure Check: They will physically measure the aisle widths. Is the perimeter gangway truly 1.5m? Or did the installer push it to 1.2m to squeeze in one more row of panels? (Result: Failure).
  2. Hatch Verification: They check the hatch opening. Is it a clear 1m diameter? Is it unobstructed?
  3. Labeling Audit: They look for the red-and-white SCDF labels on the emergency switch. They check for “Danger: High Voltage” signs on conduits.
  4. Material Verification: They may ask to see the sticker on the back of a random solar panel and compare it to the Class C certificate in the file.
  5. Cable Containment: They check that cables are not zip-tied loosely to the racking (a fire risk) but are securely housed in metal trunking/conduit.

 

6.3 Form 1 vs. Form 2: The Outcome

 

  • Form 1 (Success): If everything is compliant, the RI issues Form 1. The SCDF then issues/updates the Fire Safety Certificate.
  • Form 2 (Minor Deviation): If there are minor issues that don’t compromise immediate safety (e.g., a missing sign), the RI may issue Form 2, allowing a Temporary Fire Permit (TFP) while the contractor fixes the snag list.25
  • Rejection: If a major safety distance is violated (e.g., panels blocking the smoke vent), the RI will refuse to sign. The contractor must dismantle and relocate the panels—a disastrously expensive outcome.

7. Operational Safety, Maintenance, and Lifecycle Management

 

Obtaining the MAA approval is only the beginning. 

The solar system becomes a permanent fixture of the building, subject to the Fire Safety Act’s maintenance requirements for the next 20-25 years.

 

7.1 The Physics of Solar Fires: Arc Faults

 

To maintain safety, one must understand the enemy. Solar fires in Singapore are rarely caused by the panels spontaneously combusting. 

They are almost always caused by DC Arc Faults.

  • Mechanism: A loose connection, a corroded connector, or a cable chafed by a sharp roof edge creates a gap. The high-voltage DC electricity jumps this gap, creating an arc of plasma hotter than the surface of the sun (thousands of degrees Celsius). This arc melts metal and ignites nearby waterproofing membranes or debris.26
  • The “Mismatched Connector” Risk: A pervasive issue is installers mixing connector brands (e.g., plugging a generic “MC4-compatible” plug into a genuine Stäubli MC4 socket). While they fit mechanically, the microscopic tolerances differ. Over time, moisture gets in, corrosion starts, resistance rises, heat builds up, and a fire starts. SCDF investigators are increasingly aware of this failure mode.

 

7.2 Maintenance Regimes (SS 638)

 

Building owners are legally required to maintain their electrical installations.

  • Thermographic Scanning: Best practice involves annual drone thermal scans. A “hot spot” on a panel or combiner box is a pre-cursor to a fire.
  • Visual Inspection: Checking conduits for rust and checking that vegetation (weeds) on the roof hasn’t grown to shade the panels (causing hot spots) or dry out (becoming tinder).
  • Inverter Servicing: Cleaning the dust filters on inverters to prevent overheating.

 

7.3 Annual Fire Certificate (FSC) Renewal

 

Commercial and industrial buildings in Singapore require an annual Fire Certificate.

  • The Inspection Link: During the annual FC inspection, the RI (or SCDF officer) will glance at the roof. If they see that the solar panels have been moved, expanded, or look damaged, they can withhold the FC renewal. This effectively shuts down the building’s legal operation until rectified.28

8. Common Pitfalls and Troubleshooting

 

Experience from hundreds of submissions reveals recurring patterns of failure.

 

8.1 The “Creeping Scope” of Energy Storage (ESS)

 

Many owners decide halfway through the project to “add a few batteries.”

  • The Trap: Adding batteries moves the project from Clause 10.2 (Solar) to Clause 10.3 (Energy Storage Systems).
  • The Consequence: ESS has vastly stricter rules. It often requires a dedicated fire-rated room, explosion venting, and cannot be located on certain floors. A simple MAA lodgement turns into a complex Plan Approval with major architectural changes. Advice: Decide on batteries early and consult the QP immediately..14

 

8.2 The “Generic” Class C Certificate

 

Installers often provide a “family” certificate for a range of panels.

  • The Trap: The certificate says “Model 400-450W”. The installer installs a 460W panel.
  • The Consequence: The RI rejects it because the specific wattage is not covered by the test report. Advice: Ensure the exact model number is on the CoC.

 

8.3 The “Walkway” Erosion

 

During installation, contractors often realize they miscalculated the cable tray width. 

They install the tray in the 1.5m walkway.

  • The Trap: The clear width is now 1.2m.
  • The Consequence: Inspection failure. “Clear width” means clear—no pipes, no trays, no obstacles.

9. Conclusion

 

The application for an SCDF MAA for solar panel installation is a rigorous exercise in compliance engineering. 

It is designed to reconcile the opposing forces of renewable energy generation (which demands maximum surface area) and fire safety (which demands sterilized access zones).

For the building owner, the path to a successful, fire-safe solar asset lies in respecting the process. 

It begins with the appointment of a competent Qualified Person who understands the nuances of Clause 10.2

It proceeds through the precise digital workflows of CORENET X, relies on the integrity of the Licensed Electrical Worker for the design, and culminates in the scrutiny of the Registered Inspector.

The transition to a greener Singapore is inevitable, but as the SCDF regulations underscore, it must be a safe transition. 

By adhering to the protocols outlined in this report—maintaining the 3m hatch clearances, utilizing Class C panels, and ensuring robust DC cable containment—stakeholders contribute not just to the national energy grid, but to the resilience and safety of the urban environment itself.

10. Frequently Asked Questions (FAQ)

 

Q1: My factory has a metal roof. Do I need to reinforce it for solar?

A: Likely yes. While metal roofs are light, solar panels add approx. 12-15kg/m². A Professional Engineer (Civil) must check if the purlins can take this extra dead load and the wind uplift. This is a BCA requirement parallel to the SCDF MAA.

Q2: Can I put solar panels over the stairwell overrun (staircase shelter)?

A: Generally, no. The roof of the staircase core is often a critical access point or has ventilation requirements. SCDF usually requires this area to be kept clear for tactical operations.

Q3: What if my building is a “shophouse” with a timber roof?

A: Timber roofs are combustible. The SCDF will look very closely at this. You may need extra fire protection or a separation layer between the panels and the timber shingles to prevent a roof fire from an arc fault.

Q4: How long does the MAA process take?

A: Once the QP has the drawings ready, the actual lodgement on CORENET is instant. However, the preparation (site survey, design, endorsement) takes 2-4 weeks. If an inspection is required, add another 1-2 weeks for the RI to visit and issue Form 1.

Q5: Is the “Fireman Switch” the same as the “PV Disconnect”?

A: Not necessarily. The PV disconnect (DC isolator) is for maintenance. The Fireman Switch (Emergency Shut-off) is for emergency responders. It must be located where the fire brigade enters the building (FCC/Main Panel), not just on the roof.

11. Reference Tables

 

Table 1: Summary of SCDF Fire Code 2023 Clause 10.2 Requirements

 

Feature Requirement Clause Ref Context/Reasoning
Panel Fire Rating Class C (IEC 61730-2) Cl. 10.2.1(c) Ensures panels resist ignition from external fire sources (brands).
Roof Hatch Size Min. 1000mm diameter Cl. 10.2.1(d) Allows passage of firefighter with breathing apparatus (BA) set.
Hatch Clearance 3.0 meters radius Cl. 10.2.1(e) Staging area for equipment deployment upon roof entry.
Perimeter (Parapet <900mm) 2.5 meters wide Cl. 10.2.1(f) Fall prevention buffer for firefighters in low visibility.
Perimeter (Parapet >900mm) 1.5 meters wide Cl. 10.2.1(f) Standard tactical movement corridor.
Max Sub-Array Size 40m x 40m Cl. 10.2.1(g) Ensures fire hose reach (approx. 30m) to center of array.
Smoke Vent Clearance 500mm horizontal Cl. 10.2.1(d) Prevents obstruction of smoke plume and heat damage to panels.
Emergency Shut-Off AC Side @ FCC Cl. 10.2.1(h) Allows rapid isolation of PV system from grid by first responders.

 

Table 2: Fee Schedule (Estimated 2025)

 

Item Fee Payable To Notes
MAA Lodgement Fee $90 – $160 SCDF Paid via CORENET. Fee depends on specific scope category.
Plan Amendment Fee $90 per storey SCDF If plans are revised after initial approval.
QP Professional Fee $2,500 – $8,000+ QP (PE/Arch) Market rate; depends on complexity and roof size.
RI Inspection Fee $1,500 – $3,000 RI Separate engagement from QP.
BCA Plan Fee (if applicable) Variable BCA Only if structural strengthening/shelters >10sqm involved.

(Disclaimer: This report is for informational purposes and reflects regulations as of 2025. Fire safety codes are subject to amendments. Always consult a registered Qualified Person for project-specific advice.)

Works cited

  1. Clause 10.2 Solar Photo-Voltaic (PV) Installation – SCDF, accessed November 23, 2025, https://www.scdf.gov.sg/fire-safety-services-listing/fire-code-2023/table-of-content/chapter-10-requirements-for-special-installations/clause-10.2-solar-photo-voltaic-pv-installation
  2. Submission Requirements to SCDF for Rooftop Solar PV Installation | Licence & Accreditation – GoBusiness Licensing, accessed November 23, 2025, https://licensing.gobusiness.gov.sg/licence-directory/scdf/submission-requirements-to-scdf-for-rooftop-solar-pv-installation
  3. ‘Severe financial impact’: Singapore solar panel providers alarmed by rooftop fire safety rules | News | Eco-Business, accessed November 23, 2025, https://www.eco-business.com/news/severe-financial-impact-singapore-solar-panel-providers-alarmed-by-rooftop-fire-safety-rules/
  4. Streamlining Solar Panel Installation Processes Through SCDF Compliance, accessed November 23, 2025, https://structures.com.sg/streamlining-solar-panel-installation-processes-through-scdf-compliance/
  5. Registered Inspector’s Certificate of Inspection (Form 1) – SCDF, accessed November 23, 2025, https://www.scdf.gov.sg/docs/default-source/fire-safety-docs/downloads/forms/registered-inspector-certificate-of-inspection-form-1.docx
  6. Circular on revision of Fees in the Fire Safety Act, CAP 109A – SCDF – A member of the Home Team, accessed November 23, 2025, https://www.scdf.gov.sg/docs/default-source/fire-safety-docs/petroleum-and-flammable-material-licences/circular-on-revision-of-fees-in-the-fire-safety-act-cap-109a.pdf?sfvrsn=e6242eb9_1
  7. Implementation Guide | EMA, accessed November 23, 2025, https://www.ema.gov.sg/consumer-information/solar/implementation-guide
  8. Preparing for Solar – Singapore – EMA, accessed November 23, 2025, https://www.ema.gov.sg/consumer-information/solar/preparing-for-solar
  9. Clause 11.7 Requirements and Responsibilities for Qualified Persons – SCDF, accessed November 23, 2025, https://www.scdf.gov.sg/fire-safety-services-listing/fire-code-2023/table-of-content/chapter-11-regulated-fire-safety-products-and-materials/clause-11.7-requirements-and-responsibilities-for-qualified-persons
  10. SCDF – Singapore – Board of Architects, accessed November 23, 2025, https://www.boa.gov.sg/files/SCDF_Circular_Amendments_Fire_Code_2018.pdf
  11. SCDF / FSSD Authority Submission and Fire Safety Certificate (FSC) Application, accessed November 23, 2025, https://structures.com.sg/scdf-fssd-submission-fire-safety-certificate/
  12. Minor Addition & Alteration Works – Singapore – SCDF, accessed November 23, 2025, https://www.scdf.gov.sg/fire-safety-services-listing/plans-submission-process/minor-addition-alterationworks
  13. Addition or Alteration Works Application – Fire Safety Singapore, accessed November 23, 2025, https://firesafetysingapore.com/consultancy/aa/
  14. Submission requirements for Solar PV installations on Roof – SCDF – A member of the Home Team, accessed November 23, 2025, https://www.scdf.gov.sg/docs/default-source/fire-safety-docs/downloads/circulars/submission-requirements-for-solar-pv-system-on-roof.pdf?sfvrsn=e5045ede_1
  15. Circular Fire Safety Requirements For Solar PV Installation On Roof | PDF – Scribd, accessed November 23, 2025, https://www.scribd.com/document/374566642/Circular-Fire-Safety-Requirements-for-Solar-Pv-Installation-on-Roof
  16. Structural and Building Plans Requirements for Rooftop Solar PV Installation | Licence & Accreditation – GoBusiness Licensing, accessed November 23, 2025, https://licensing.gobusiness.gov.sg/licence-directory/bca/structural-and-building-plans-requirements-for-rooftop-solar-pv-installation
  17. Code of practice for electrical installations – Singapore Standards, accessed November 23, 2025, https://www.singaporestandardseshop.sg/product/getpdf?filename=190215172027ss%20638-2018%20-%20preview.pdf&pdtid=fd1f48ab-6e55-49f4-a725-5addcb22654e
  18. Electrical Safety, accessed November 23, 2025, https://www.tal.sg/wshc/topics/electrical-safety/electrical-safety
  19. Design of Electrical Installations | Singapore Institute of Technology, accessed November 23, 2025, https://www.singaporetech.edu.sg/sitlearn/courses/engineering/design-electrical-installations
  20. What is Direct Submission Process (DSP)? – CORENET X, accessed November 23, 2025, https://support.corenet.gov.sg/hc/en-us/articles/13750772187151-What-is-Direct-Submission-Process-DSP
  21. Direct Submission Process (DSP) – Singapore – CORENET X, accessed November 23, 2025, https://info.corenet.gov.sg/regulatory-process/about-the-new-submission-process/direct-submission-process-(dsp)
  22. Plan Approval – Singapore – SCDF, accessed November 23, 2025, https://www.scdf.gov.sg/fire-safety-services-listing/plans-submission-process/plan-approval
  23. CORENET X Submission Portal – Singapore, accessed November 23, 2025, https://info.corenet.gov.sg/overview/corenet-x-submission-portal
  24. Administrative Instruction for FSC and MAA Submissions – SCDF – A member of the Home Team, accessed November 23, 2025, https://www.scdf.gov.sg/docs/default-source/fire-safety-docs/downloads/circulars/circular–administrative-instruction-for-fsc-and-maa-submissions.pdf?sfvrsn=348c3c78_1
  25. Registered Inspector – Singapore – SCDF, accessed November 23, 2025, https://www.scdf.gov.sg/fire-safety-services-listing/permits-and-certifications/registered-inspector
  26. Solar Panel Fire: Causes, Prevention, and Safety Tips – GetSolar Singapore, accessed November 23, 2025, https://www.getsolar.ai/en-sg/blog/solar-panel-fire-safety
  27. Ensuring Solar Panel Safety: Lessons from the Singapore Factory Fire Incident – Sunollo, accessed November 23, 2025, https://www.sunollo.com/blog/solar-panel-fire-in-singapore-highlights-the-need-for-quality-and-safety
  28. SCDF Fire Certificate Renewal in Singapore | Fire Armour, accessed November 23, 2025, https://www.firearmour.com.sg/scdf-fire-certificate-renewal/

Fire Safety Certificate Application & Renewal Online Singapore, accessed November 23, 2025, https://www.falconfire.com.sg/fire-certificate-application-and-renewal

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