Installing a diesel generator set is not only a mechanical or electrical job. In Malaysia, it may also involve submission to the Department of Environment, commonly known as DOE or Jabatan Alam Sekitar (JAS).
Many building owners, contractors, consultants, and facility managers only focus on the genset size, fuel tank, exhaust pipe, acoustic enclosure, and installation schedule. The DOE/JAS requirement is sometimes treated as an afterthought.
That is a mistake.
For a generator set installation, a DOE/JAS submission should be considered early, before installation work begins.
If you need assistance, ISTIQ provides Generator Set DOE Application & Submission support together with the required technical input for genset acoustic treatment, exhaust systems, ventilation, and noise control.
The common term used in the industry is DOE approval for a generator set. However, under the current Environmental Quality (Clean Air) Regulations 2014, the correct process is known as Written Notification.
For generator sets, the relevant form is:
AS/PUB/N-JANA — Written Notification on Air Emission Sources (Generator)
This form is submitted under Regulation 5 of the Environmental Quality (Clean Air) Regulations 2014.
In simple terms, before installing a generator set that may create an air emission source, the owner or occupier must submit a written notification to DOE/JAS.
The written notification must be submitted at least 30 days before the commencement of work.
This means the DOE/JAS submission should not be done after the generator has already been installed. It should be prepared during the planning stage, when the genset layout, exhaust design, acoustic treatment, and ventilation arrangement are still being finalized.
Early submission helps avoid unnecessary delay, redesign, or compliance issues later.
In generator rooms, early planning is especially important because the Genset Room Noise Control system must work in conjunction with the ventilation and exhaust arrangement.
The DOE/JAS generator set notification is not just a basic application form. It typically requires technical information on the generator set, exhaust system, acoustic treatment, and installation layout.
The submission may include:
This is why the submission should be handled by someone who understands both regulatory requirements and genset engineering.
Generator sets are noisy equipment. Noise can come from the engine body, radiator fan, air intake opening, discharge opening, exhaust outlet, and vibration through the structure.
For this reason, acoustic design is an important part of a proper generator set installation.
A good genset acoustic system may include:
For outdoor or packaged generator installations, ISTIQ can provide an Acoustic Genset Canopy / Enclosure designed to reduce noise while maintaining airflow, access, and safe operation.
For indoor generator rooms, the access door can become a weak point if it is not properly selected. A suitable Acoustic Door helps reduce sound leakage while allowing safe access for operation and maintenance.
The exhaust system is also critical. A properly selected Exhaust Silencer can reduce engine exhaust noise without creating excessive back pressure or affecting generator performance.
The acoustic system must reduce noise, but it must not block airflow. A generator set needs proper ventilation for combustion, cooling, and safe operation. If the acoustic treatment is too restrictive, the genset may overheat or suffer performance issues. If the ventilation opening is too open, the noise control may fail.
The best design balances both requirements: noise control and proper ventilation.
Failure to comply with the Environmental Quality (Clean Air) Regulations 2014 may expose the owner or occupier to enforcement action.
The penalty may include a fine not exceeding RM100,000, imprisonment for up to two years, or both.
Providing false or misleading information under the regulations can also lead to the same maximum penalty.
So this is not just paperwork. It is a compliance matter that can affect the project, the owner, the contractor, and the facility operator.
Before installing your generator set, make sure the DOE/JAS requirements are properly met.
If you are unsure whether your genset installation requires submission or if you need help preparing the technical documents, ISTIQ can assist.
Contact ISTIQ Noise Control Sdn Bhd for Generator Set DOE Application & Submission, Genset Room Noise Control, Acoustic Genset Canopy / Enclosure, Exhaust Silencer, and Acoustic Door solutions.
Malaysia