E&E Assembly in Johor: Environmental, Effluent & Power Compliance Guide

Electronics & electrical (E&E) assembly clusters mainly in Tebrau and Senai — eastern Johor Bahru’s most active industrial belts. Tebrau adjoins the Eastern Dispersal Link (EDL), roughly 15 minutes from the Causeway, with a ready labour pool from Setia Tropika and Bandar Dato Onn, and sits inside the JS-SEZ Flagship Zone B incentive perimeter. Core activities include printed-circuit-board assembly (PCBA), component soldering and consumer-electronics final assembly; the compliance focus is power-quality sensitivity plus trace soldering effluent and specific scheduled-waste streams.

Under section 34A of the Environmental Quality Act 1974 (Act 127) and the Environmental Quality (Prescribed Activities) (Environmental Impact Assessment) Order 2015, a light E&E assembly and test plant typically falls under the First Schedule. The project proponent appoints a DOE-registered environmental consultant to prepare the EIA report and submits it to the Johor State DOE office for review and approval. First Schedule activities are generally exempt from mandatory public display, so the approval pathway is comparatively efficient.

Board cleaning, mould maintenance and cooling generate industrial effluent governed by the Environmental Quality (Industrial Effluent) Regulations 2009 [P.U.(A) 434/2009]. Before construction or modification works that create a new discharge source, the occupier must give the Director General prior written notification under regulation 4. Standard A applies where the discharge point lies upstream of a gazetted water catchment (e.g. the Johor River); Standard B applies otherwise. The plant must operate a compliant industrial effluent treatment system (IETS) supervised by a DOE-certified competent person.

Waste printed circuit boards, solder-paste residues and component-cleaning solvents are scheduled wastes regulated by the Environmental Quality (Scheduled Wastes) Regulations 2005 [P.U.(A) 294/2005]. On-site storage is limited to 180 days or less, and accumulation must not exceed 20 metric tonnes without prior written DOE approval. Containers must be labelled with the generation date, waste code and generator contact; transfers run through the DOE electronic consignment (e-Consignment) system to licensed recovery or treatment facilities.

E&E equipment is sensitive to voltage sag, so siting requires an early Maximum Demand (MD) consultation with TNB. A single-line diagram (SLD) signed by a registered Professional Engineer (PE) is submitted to the Energy Commission (Suruhanjaya Tenaga, ST) under the Electricity Supply Act 1990 (Act 447). For applications submitted after 22 November 2024, TNB bears the substation plinth construction and equipment cost where the developer hands over setback-compliant substation land.