Roof Solar PV Approval in Singapore: BCA, URA, SCDF and SP Group

A rooftop solar PV system in Singapore does not pass through a single approval. Four bodies can each be involved: the Building and Construction Authority (BCA) for structural and building plans, the Urban Redevelopment Authority (URA) for planning, the Singapore Civil Defence Force (SCDF) for fire safety, and SP Group for grid connection. Which of them applies depends on the roof, the mounting design and the size of the installation. This article sets out the triggers for each approval, the roles of the Qualified Person (QP) and the Licensed Electrical Worker (LEW), and the sequence that avoids delays.

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TL;DR

BCA approval of structural and building plans, submitted by a QP through CORENET, is required when the works involve structural strengthening, support structures above 2.5 m, or panels that act as a roof shelter above 10 square metres.
URA planning permission is generally not needed for standard rooftop panels, but elevated panels in restricted zones and any installation in conservation areas are assessed separately.
SCDF treats solar PV as part of the building’s fire safety provisions, so Fire Code Clause 10.2 and firefighting access must be addressed at design stage.
A LEW must commission every grid-connected system and submit the technical documentation to SP Group before the system can be switched on.
The QP and the LEW hold different responsibilities. Appointing both early is the single most effective way to protect the programme.

Who approves what: the four-agency map
BCA: when structural and building plans are required
URA: when planning permission applies
SCDF: fire safety is part of the design
SP Group and EMA: the grid connection track
QP and LEW: two roles, not one
A workable sequence for a commercial roof
Common reasons submissions stall
Our perspective
How AEC Technical SG supports solar PV approvals
FAQ
Sources

Who approves what: the four-agency map

Solar PV is often purchased as equipment. Regulators treat it as a building alteration with an electrical generation component. The table below summarizes the usual position.

Agency	What it governs	Typical trigger	Who submits
BCA	Structural and building plans	Strengthening, structures above 2.5 m, panels forming a roof shelter above 10 sq m	Qualified Person
URA	Planning permission	Elevated panels in restricted zones, conservation areas, sites with urban design guidelines	Usually the QP or project architect
SCDF	Fire safety works	Solar PV on a new building project, or specific existing building scenarios	Qualified Person
SP Group	Grid connection and power quality	Every grid-connected system	Licensed Electrical Worker

A small flush-mounted system on a sound roof may trigger only the electrical track. A commercial or industrial installation with raised frames, new walkways or reinforced purlins will usually trigger several tracks in parallel. The owner should establish which scenario applies before a supplier is appointed, not after.

BCA: when structural and building plans are required

According to the BCA requirements published through GoBusiness, the QP must apply for approval of structural and building plans through CORENET if the works involve structural strengthening, support structures exceeding 2.5 m in height, or panels that function as a roof shelter exceeding 10 square metres. BCA states that it aims to respond to CORENET submissions within 7 to 14 working days.

Three practical points follow from this.

Strengthening is the common trigger. Many older roofs were designed for maintenance loads only. If the existing structure cannot carry the panels, ballast, wind uplift and maintenance access, strengthening is needed, and strengthening alone brings the project into BCA’s plan submission process.
Height is measured on the support structure. Elevated frames used to tilt panels or clear roof equipment can pass 2.5 m more easily than owners expect, particularly on sloping or stepped roofs.
Shelter-type installations are treated as buildings. Solar canopies over car parks, walkways or roof terraces behave as roof shelters. Above 10 square metres they enter the plan approval route.

Once structural plans are approved, BCA’s structural plan submission process requires a permit before structural works start. The application is made jointly by the developer, the QP and the builder.

For a fuller explanation of what a plan submission contains, see our guide to BCA plan submission requirements. For the duties that sit with the appointed professional, see Qualified Person duties in Singapore.

The structural question comes first

The load check is where most solar projects either proceed cleanly or stall. An assessment should establish the existing design loads, the as-built condition of the roof, the added dead load of panels and frames, wind effects, and the load path into the primary structure. Where the roof is a light-gauge metal deck on purlins, the check often governs the entire layout. Our article on structural load limits for rooftop gardens and solar panels covers the principal checks, and the piece on warehouse roof strengthening for large-scale solar addresses the larger industrial case.

URA: when planning permission applies

URA’s guidelines indicate that planning permission is generally not required for standard rooftop solar panel installations. The exceptions are specific:

Elevated panels raised more than 1 m above the roof for landed housing, or more than 1.8 m for other developments, in restricted land use zones.
Any installation within a designated conservation area.
Sites subject to urban design guidelines.

Elevated panels that do require permission must generally stay within a 45-degree line from the springing line of the roof level. They also should not exceed 5 m above roof level for non-landed buildings or 1 m for landed buildings, otherwise they risk being assessed as an additional storey.

The same page notes that URA’s planning permission is not required for solar farms on land and waterbodies owned by the State and Statutory Boards, which is a different case from a private building roof. Owners should not assume that a government programme’s exemption extends to a private development.

Roof design controls may also matter. URA’s handbook on RC flat roofs states that such roofs should remain inaccessible except for maintenance, with other uses assessed on merit. A solar layout that adds permanent platforms or walkways should be checked against that principle early.

SCDF: fire safety is part of the design

The SCDF circular on submission requirements for rooftop solar PV states that a solar PV installation that comes with a new building project is submitted together with the other fire safety works for SCDF approval. Existing buildings follow a separate set of conditions, and the circular should be read for the scenario that matches the building.

The underlying principle is set out in Fire Code 2023, Clause 10.2 on solar photovoltaic installations. In practice, three matters recur in submissions:

Firefighting access. Panel arrays that block access routes or leave no safe working space are a frequent reason for comments.
Isolation and labelling. Firefighters need to be able to identify and isolate the DC and AC sides of the system.
Lightning protection. The research we reviewed identifies SS 555:2018 as the governing standard for lightning protection. Adding an array changes the exposure of the roof, so the existing protection must be reassessed. Our guide to lightning protection requirements for Singapore explains the design checks.

SCDF’s plan approval page confirms that under the Fire Safety Act 1993, a person who intends to carry out fire safety works in a building must first obtain plan approval. For who is responsible for lodging, see who submits plans to SCDF.

SP Group and EMA: the grid connection track

Structural and fire approvals do not by themselves allow the system to operate. According to the EMA payment schemes page and the SP Group user guide for residential consumers, a grid-connected system must be commissioned by a Licensed Electrical Worker, who submits technical documentation to SP Group through its eBusiness portal. The documentation includes:

Inverter type test reports covering harmonics, flicker and DC injection.
Single line diagrams.
Power quality compliance reports.

This is a technical submission, not a form-filling exercise. An inverter without the correct test reports can hold up connection regardless of how well the roof was engineered.

Selling excess power

Export arrangements depend on the type of consumer. EMA’s payment schemes page describes the Simplified Credit Treatment scheme for non-contestable consumers, and the Enhanced Central Intermediary Scheme for contestable consumers. The same page notes that facilities with 10 MWac or more of embedded solar capacity must register directly with the Energy Market Company. EMA’s guide for embedded generators sets out the conditions under which a consumer may embed generation and supply its own load. Commercial owners should confirm with their electricity retailer or SP Group which scheme applies before the financial model is finalized.

QP and LEW: two roles, not one

The most common misunderstanding is that a single appointment covers everything. It does not.

	Qualified Person (QP)	Licensed Electrical Worker (LEW)
Focus	Structural and building safety, plan submissions	Electrical installation and grid compliance
Deals with	BCA, SCDF, and URA where relevant	SP Group, EMA requirements
Typical deliverables	Structural calculations, plan submissions, supervision	Single line diagrams, test reports, commissioning

A QP is a professional engineer or architect registered to act in that capacity under the Building Control Act. The distinction between QP and PE endorsement is covered in our article on QP and PE roles for commercial building owners. The BCA’s page on building plan submission is the reference for how plans are lodged.

A workable sequence for a commercial roof

The order below keeps the agencies from blocking one another.

Screen the roof. Establish the roof type, age, drawings, existing loads and any prior alterations.
Appoint the QP and the LEW together. Both should see the preliminary layout before the supplier is fixed.
Run the structural check. Decide whether strengthening is needed, and whether any support structure will pass 2.5 m or any canopy 10 square metres.
Test the layout against URA triggers. Check land use zone, conservation status and the heights for elevated panels.
Design for fire and lightning. Preserve firefighting access, plan isolation, and review lightning protection.
Submit. Lodge BCA plans through CORENET where triggered, and SCDF submissions as applicable. Allow for BCA’s stated 7 to 14 working day response window and for resubmissions.
Obtain the permit and build. Structural works start only after the permit is in place where one is required.
Commission and connect. The LEW prepares and submits the SP Group documentation, and the export scheme is registered.

Common reasons submissions stall

Structure assessed last. The panel supplier’s layout is accepted first and the roof fails the check afterward, forcing redesign.
Solar treated as equipment. Fire access and lightning protection are not planned, and SCDF comments follow.
Late LEW involvement. Inverter selection is made without test reports for the SP Group requirements.
Wrong scenario assumed. A new building project and an existing building follow different SCDF routes.
Scope creep. Walkways, platforms and screening added during construction can bring a previously exempt design within a BCA or URA trigger.

Our perspective

We see rooftop solar as a structural and regulatory project that happens to generate electricity. The cheapest delay is the one avoided on paper: a structural check and a trigger screening cost little compared with a stopped site or a redesigned array. For industrial owners with long, lightly framed roofs, the structural check often determines the entire layout and the budget.

We also encourage owners to keep the submissions coherent. The same set of drawings supports BCA, SCDF and, where relevant, URA. Inconsistencies between them, such as a different array height in two submissions, are avoidable and cause real delay. Appointing the QP before the supplier means the layout is designed around the approvals instead of being corrected to fit them.

— Aman

How AEC Technical SG supports solar PV approvals

AECTechnicalSG provides structural and geotechnical engineering, PE endorsement, and statutory authority submissions to BCA, URA, SCDF, JTC, LTA, PUB and NEA for projects in Singapore. For a rooftop solar project, that covers the roof load assessment, strengthening design where it is needed, and the plan submissions that follow. Owners can review the full list of services, or look at our PE endorsement and authority submission services to discuss a specific roof. The electrical commissioning and SP Group documentation remain with a Licensed Electrical Worker, and we coordinate our submissions with that appointment.

FAQ

Does every rooftop solar installation need BCA approval?

No. BCA plan approval through a QP is required when the works involve structural strengthening, support structures above 2.5 m, or panels that function as a roof shelter above 10 square metres. Installations outside those triggers do not require the plan submission, though the roof must still be structurally adequate and the other agencies’ requirements still apply.

Is URA planning permission needed for solar panels on a roof?

Generally not for standard rooftop panels. Permission is required for elevated panels above 1 m on landed housing, or above 1.8 m on other developments, in restricted land use zones, and for installations in conservation areas or sites under urban design guidelines. The exact position depends on the site, so it should be confirmed against URA’s guidelines before design is fixed.

Who submits the application for grid connection?

A Licensed Electrical Worker commissions the system and submits the required documentation to SP Group through its eBusiness portal. This includes inverter test reports, single line diagrams and power quality compliance reports. The QP does not perform this role.

Can the building owner sell excess solar electricity?

Yes, under the schemes EMA describes. Non-contestable consumers fall under the Simplified Credit Treatment scheme, and contestable consumers under the Enhanced Central Intermediary Scheme. Which applies depends on whether electricity is bought from SP Group or from a retailer.

How long does BCA take to respond?

BCA states that it aims to respond to CORENET submissions within 7 to 14 working days. Resubmissions after comments extend the overall timeline, so the programme should allow for at least one round of clarification.