Answer: Singapore solar projects need coordinated building, structural, electrical and fire-safety review. The appointed Qualified Person should establish BCA approval or exemption status and apply SCDF requirements to the actual PV layout. Batteries require a separate ESS assessment. Choose the submission platform using current project-specific CORENET rules; an electrical registration or software drawing does not establish building or fire compliance.
This guide is for building owners, installers and project coordinators assembling the approval record. Primary government guidance was checked on 30 September 2026. It is an editorial planning guide, not a project approval or a substitute for the appointed professionals’ assessment.
Separate the approval responsibilities
| Workstream | Question to resolve before committing the layout | Record to retain |
|---|---|---|
| Building and structure | What works are proposed, which plans or permits are needed, and what exemption, if any, applies? | QP assessment and applicable approval or exemption basis |
| PV fire safety | How will responders reach the roof and operate the emergency disconnection arrangements? | Coordinated fire-safety layout and relevant submission record |
| Battery storage | Which ESS provisions apply to this chemistry, capacity, location and compartment arrangement? | Battery schedule, fire strategy and specialist review |
| Electrical connection | What electrical licensing, connection and export arrangements apply? | LEW and network documentation, tracked separately |
EMA’s preparing-for-solar guidance explicitly places roof assessment and prevailing fire-safety compliance in the planning process. A conventional rooftop installation still needs this coordination.
Establish BCA approval or exemption status
BCA’s building works not requiring approval guidance directs owners to consult their QP and the current First Schedule of insignificant building works. It also distinguishes building-control requirements from matters such as MCST consent. A QP must be an appropriately registered architect or professional engineer with a valid practising certificate; the required expertise depends on the submission discipline.
This review could not retrieve the current statutory schedule. Consequently, this guide does not certify a universal “2.5 m platform” or “10 m² shelter” exemption test. Have the QP document the actual provision and its conditions rather than relying on those numbers alone.
For structural submissions, consult BCA’s structural plan requirements, including the applicable QP and Accredited Checker documentation. Roof strengthening, new supports, altered load paths and unusual foundation arrangements merit early discussion with the structural professional.
Information to prepare for structural review
Collect the existing building drawings and any available alteration records. Identify the proposed mounting arrangement, equipment locations, roof condition and access restrictions. Provide the equipment and racking documents rather than substituting an assumed panel weight or anchor capacity.
A useful coordination register records each design assumption, its evidence, the responsible reviewer and whether it remains unresolved. Examples include ballast distribution, attachment details, corrosion exposure, waterproofing interfaces and the need to investigate the existing structure. This register is an editorial project-management recommendation, not a list of legally mandatory submission documents.
CORENET X: use the revised July 2026 circular
The joint BCA/URA circular dated 23 July 2026 changes the earlier rollout plan:
| Project category described in the circular | Submission position |
|---|---|
| New projects with GFA of at least 30,000 m² | Mandatory CORENET X Gateway submission began 1 October 2025 |
| Qualifying new projects with GFA of at least 5,000 m² | Mandatory Gateway submission from 1 October 2026 |
| Ongoing projects with GFA of at least 5,000 m² | CORENET 2 may continue pending further details |
| Projects below 5,000 m² | Gateway submission voluntary; CORENET 2 may continue for now |
The circular defines qualifying new works by their submission history and scope: erection, additions/extensions creating the stated GFA, or major additions and alterations affecting/replacing that GFA. A solar retrofit on a large existing building does not automatically qualify merely because the building’s total floor area exceeds the threshold. The QP should classify the actual works and check the transitional conditions.
Source conflict: BCA’s structural submission page still describes CORENET X as mandatory for all new projects by October 2026. For this rollout issue, use the later, specific joint circular rather than repeating that older general statement. Recheck updates when submitting.
SCDF requirements apply to rooftop PV
SCDF Clause 10.2 addresses roof access, PV fire performance, arrangement and emergency disconnection. Purpose Group I buildings are referred to Clause 9.1.1d, so one commercial-roof checklist should not be applied indiscriminately to every house.
The current indexed clause describes manual emergency shut-off on both the AC-power side and the switch-room side. Describing this as an AC-only switch at the fire command centre is incomplete. AC isolation also must not be represented as proof that sunlit PV DC conductors are de-energised.
Have the fire-safety professional check the relevant access route, openings, array arrangement, nearby vents and skylights, module evidence, cable provisions and switch identification against the applicable clause and diagrams. This guide omits a universal setback table because the exceptions and building categories matter. The full live clause could not be fetched during this review; the linked primary indexed text was available, but project-specific interpretation remains necessary.
Batteries need their own fire strategy
SCDF Clause 10.3 distinguishes aboveground, temporary construction-site and basement ESS installations. Table 10.3.1 uses aggregated stored energy per compartment; an inverter’s kW rating is not the battery’s kWh classification.
For example, the aboveground table lists a lithium-ion threshold of 20 kWh and maximum stored energy of 600 kWh per compartment, subject to the surrounding provisions and exceptions. These figures are not a blanket permission to install 600 kWh anywhere. The clause generally places aboveground ESS at the fire-engine access level, with specified approval conditions for exceptions. Basement arrangements have separate limits and requirements.
Ask the specialist to resolve location, compartmentation, protection, gas detection, ventilation, BMS, isolation and emergency access together. Do not copy a basement ventilation requirement into every rooftop enclosure. Confirm the applicable plan approval, completion and certificate pathway with the QP before the relevant works or occupation/use.
Build a controlled submission and handover record
Use this coordination sequence alongside the authority requirements:
- Classify the works. Record the property type, existing approvals, proposed structural changes, PV arrangement and any ESS.
- Assign responsible professionals. Identify who owns structure, fire safety, electrical connection and each submission.
- Resolve layout conflicts. Reconcile the intended module area with access, roof equipment, cable routes and battery placement before procurement.
- Record authority actions. Track submission references, comments, revised drawings, permissions and outstanding conditions separately.
- Control substitutions. When a module, mounting assembly or battery changes, send the new evidence to the responsible reviewers rather than assuming interchangeability.
- Close out the installation. Retain the applicable inspections, commissioning records, as-built information, approved operating arrangements and maintenance responsibilities.
Avoid a single checkbox labelled “BCA/SCDF compliant.” Separate the evidence that a drawing was reviewed, a plan was approved, an installation was inspected and an operating condition was satisfied.
Budget and schedule without invented allowances
Obtain project-specific professional quotations and current authority fee information. Keep assessment, design preparation, agency review, query responses, installation, inspections and completion separate in the programme. Scope changes can affect more than one workstream.
An authority response target is not an end-to-end approval promise. Ask for a programme tied to the actual solar and ESS scope, with identified dependencies and a named owner for each outstanding action.
Related Singapore guidance and design evaluation
- Singapore compliance overview for the wider country workflow.
- EMA licensing guide for the separate electrical workstream.
- ECIS registration guide for export and settlement considerations.
When evaluating SurgePV’s design workflow, bring the QP’s layout constraints and ask which outputs are available for your project. A software layout does not replace structural verification, SCDF assessment or authority permission. Book a demo to discuss your workflow and documentation needs.
Frequently Asked Questions
Does rooftop solar need BCA approval in Singapore?
The appointed Qualified Person should establish whether the proposed works require building or structural plan approval or qualify for an exemption. Do not assume that flush mounting, a sound roof, or the absence of strengthening settles every approval requirement.
Does SCDF only apply when solar includes batteries?
No. SCDF has requirements for rooftop PV itself, including access and emergency disconnection. Battery energy storage introduces a separate review under Clause 10.3; its applicability depends on the installation and stored-energy classification.
Which CORENET platform applies to solar projects?
Use the July 2026 joint BCA/URA circular to classify the project. Qualifying new projects involving at least 5,000 square metres of GFA enter the mandatory CORENET X Gateway scope from 1 October 2026. Smaller projects may continue in CORENET 2 for now; the circular also describes ongoing-project arrangements.
How long does BCA or SCDF solar approval take?
There is no verified solar-specific end-to-end approval duration in this guide. Ask the responsible professionals for a programme covering assessment, submission, authority queries, required inspections, and close-out. A service response target is not a guaranteed project completion date.
