TL;DR
- A 400kWp system saved Seri Zenith Engineering 79% monthly; a 900kWp system saved Hang Tuah Furniture 39%. Smaller does not mean fewer savings.
- Outcome depends on consumption profile, tariff category, and roof capacity, not system size alone. Get an energy audit before sizing.
- Mid-to-large commercial installations (400kWp to 900kWp) require EPCC delivery, ST compliance, and TNB interconnection approval from a SEDA-registered contractor.
A 400kWp system saved one Malaysian engineering facility 79% on its monthly electricity bill. A 900kWp installation across a furniture manufacturing plant cut costs by 39%. The difference in those outcomes comes down to one thing: how well the system was sized against the facility's actual consumption profile, not an estimate. If you are deciding whether commercial solar is viable for your operation, and what scale makes sense, each commercial solar case study in Malaysia below gives you a reference point grounded in commissioned systems, not projections.
Commercial and Industrial Solar Projects Delivered in Malaysia
Commercial and industrial solar projects across Malaysia are delivering verified reductions in electricity expenditure, with commissioned commercial solar installation companies delivering systems ranging from 400kWp to 900kWp across manufacturing, engineering, warehouse, and office facilities.
Malaysia's commercial solar sector has expanded considerably over the past decade, supported by frameworks such as the Net Energy Metering (NEM) scheme administered by the Sustainable Energy Development Authority (SEDA) and the Large Scale Solar (LSS) auction programme under the Energy Commission (Suruhanjaya Tenaga, or ST).
Industrial solar installations in Malaysia have expanded alongside both frameworks, particularly among manufacturing and logistics operators seeking to reduce dependency on grid tariffs under TNB's commercial and industrial tariff structure.
Within this environment, commercial and industrial operators across manufacturing, engineering, retail, and logistics have moved from evaluating solar to commissioning it. The commercial solar projects below represent that transition in practice: real sites, real systems, and documented energy outcomes.
Manufacturing: Hang Tuah Furniture, 900kWp, 39% Monthly Saving
The result: A 900kWp rooftop solar system at Hang Tuah Furniture Sdn Bhd in Bahau, Negeri Sembilan reduced the facility's monthly electricity bill by 39%, generating 29,565,000 kWh of energy to date.
Hang Tuah Furniture operates a high-consumption manufacturing environment where machinery, lighting, and climate control run across extended production hours. Facilities of this type are well suited to solar because their peak energy demand aligns closely with peak solar generation hours during the day.
The 900kWp system was delivered as a full commercial and industrial solar PV installation, covering engineering design, equipment procurement, construction, and commissioning (EPCC). The scope included the PV panel array, PV inverter, mounting structure, and an online monitoring system, with a single contractor accountable for every phase from design through to grid connection and handover.
| Detail | Specification |
|---|---|
| Client | Hang Tuah Furniture Sdn Bhd |
| Location | Bahau, Negeri Sembilan |
| Sector | Manufacturing |
| System size | 900kWp |
| Energy generated | 29,565,000 kWh |
| Monthly saving | 39% |
| Project type | Commercial rooftop, EPCC |
At 900kWp, this installation sits at the upper end of mid-scale commercial solar in Malaysia. For a manufacturing operator, a 39% reduction in monthly electricity expenditure represents a material impact on operating costs, with payback periods that tend to be well within the operational lifespan of the system.
Not every facility will reach 39%. The outcome depends on your consumption profile, roof capacity, and tariff category. If you want to know what a system at this scale could realistically offset for your operation, an energy audit is the starting point. Schedule a site assessment before committing to any figure.
Engineering: Seri Zenith, 400kWp, 79% Monthly Saving
The result: A 400kWp commercial solar installation at Seri Zenith Engineering Sdn Bhd in Beranang, Selangor reduced monthly electricity costs by 79%, generating 13,140,000 kWh of energy to date.
The Seri Zenith project demonstrates that system size alone does not determine the scale of savings. At 400kWp, this is a smaller installation than Hang Tuah Furniture, yet the monthly saving is substantially higher at 79%. This outcome reflects the relationship between a facility's baseline consumption, its grid tariff category, and the proportion of that consumption the solar system can offset.
Engineering facilities that operate within defined production windows, with predictable load profiles, can achieve high offset rates when the system is correctly sized against actual consumption data rather than estimated figures. The engineering design for this installation was customised to meet the facility's specific energy-saving targets rather than applied as a standard configuration.
| Detail | Specification |
|---|---|
| Client | Seri Zenith Engineering Sdn Bhd |
| Location | Beranang, Selangor |
| Sector | Engineering |
| System size | 400kWp |
| Energy generated | 13,140,000 kWh |
| Monthly saving | 79% |
| Project type | Commercial rooftop, EPCC |
The Seri Zenith outcome illustrates why energy auditing before system sizing matters. A well-matched system, sized to the verified consumption profile of the site, tends to deliver stronger offset performance than an oversized or undersized installation.
That outcome raises a practical question worth asking about your own facility: is your system being sized against verified consumption data, or an estimate? Bring your last 3 months of TNB bills to a consultation and find out what your actual offset potential looks like.
Projects by Sector: Factory, Warehouse, Retail, and Office
The right sector for commercial solar is any facility that operates during daylight hours and carries a significant electricity bill. This includes factories, warehouses, retail premises, and office campuses across Malaysia. A full overview of commercial and industrial solar projects by sector and location is available for reference.
| Sector | Primary load drivers | Solar suitability |
|---|---|---|
| Factory and manufacturing | Machinery, lighting, climate control across extended production hours | High. Daytime demand aligns closely with solar generation; on-site consumption is maximised |
| Warehouse and logistics | Lighting, refrigeration, loading equipment | High. Large unobstructed roof areas accommodate higher-capacity systems |
| Retail | Air conditioning during trading hours | Strong. Retail operating hours align with peak solar generation |
| Office and commercial campus | Central air conditioning, server rooms, full-floor lighting | Viable, particularly for owner-occupied buildings with ESG reporting obligations under Bursa Malaysia requirements |
Once you have identified your sector, the next variable is system size.
What Solar System Size Suits a Factory or Commercial Building?
System size is determined by 3 factors: available roof or ground space, the facility's verified consumption data, and the applicable grid connection limit under TNB (Tenaga Nasional Berhad) and ST regulations.
| System size range | Typical application |
|---|---|
| 100kWp to 299kWp | SME facilities, small warehouses, shophouse blocks |
| 300kWp to 499kWp | Mid-scale factories, engineering facilities, office campuses |
| 500kWp to 900kWp | Large manufacturing plants, logistics hubs, multi-building sites |
The 400kWp to 900kWp range represented in this portfolio corresponds to mid-to-large commercial installations. Projects at this scale typically require full EPCC delivery, including structural assessment, inverter and panel specification, ST compliance documentation, and TNB interconnection approval. The contractor behind these projects holds SEDA Registered PV Service Provider (RPVSP) status, is registered under the Malaysian Energy Commission, and is certified under ISO 9001:2015, meaning the installation process and quality management framework meets verified international standards.
Post-installation, an operation and maintenance programme covers online monitoring, fault analysis, on-site repairs, and spare parts management, ensuring the system continues to perform within expected parameters over its operational lifespan.
The figures above reflect what the specifications require. What follows is what clients reported after commissioning.
What Our Clients Say
Client feedback on completed installations speaks to 3 consistent themes across this portfolio: the quality of the pre-installation analysis, on-schedule project delivery, and solar generation performance that matches projected figures.
"We were looking for ways to optimise our expenses, and it was made possible by Northern Solar. After providing us with detailed analysis and working with us towards a solution that worked well for us, we decided to install 900kWp on our facilities."
— Hang Tuah Furniture Sdn Bhd (900kWp, Bahau, Negeri Sembilan)
"Northern Solar has demonstrated good project management by completing the project on schedule and fulfilling all the requirements. The performance of the solar generation was as per projected, thus helping the company to save on the high electrical tariff cost. Kudos for the job well done and we are pleased with this partnership."
— Packerman Sdn Bhd (792.72kWp, Air Keroh, Malacca)
"Appreciate the excellent attention and service Northern Solar provides to their own customers."
— Kuala Ketil, Kedah (8.17kWp)
Across project sizes and sectors, the consistent thread is output that matches what was projected at the proposal stage. For a commercial operator committing capital to a solar installation, that alignment between projected and actual performance is the measure that matters most.
Start Your Own Commercial Solar Project with Northern Solar
Northern Solar delivers EPCC solar PV solutions for commercial and industrial clients across Malaysia, covering manufacturing, engineering, warehouse, retail, and office facilities. The service spans the full project lifecycle: energy auditing, system design, equipment procurement, installation, grid connection, and ongoing operation and maintenance.
If you are evaluating a commercial solar installation for your company’s facility, the starting point is an energy audit and a site assessment against current ST and TNB connection requirements. Request a free consultation to begin the technical evaluation.
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