Introduction
As Singapore accelerates toward a greener future under its Green Plan 2030, industrial businesses are under growing pressure to reduce their carbon footprint, control operational costs, and align with global sustainability standards. One of the most practical and impactful ways for industrial facilities to meet these objectives is by adopting solar power.
Factory owners across Singapore are increasingly looking into solar energy not just as an environmental measure but as a strategic business decision. However, investing in a solar power system for an industrial facility involves multiple considerations, from feasibility assessments to regulatory compliance and financial modeling.
This article provides a comprehensive overview of the key considerations every Singapore factory owner should evaluate when deciding to adopt solar power.
1. Assessing Roof Suitability and Available Space
The first step for any industrial solar installation is to assess whether your facility’s roof can support solar panels effectively. Many factories in Singapore are single or double-storey with expansive, flat rooftops—ideal for solar deployment.
Key factors to evaluate include:
- Size of usable roof area
Larger roof areas allow for higher system capacities (e.g., 100 kWp, 500 kWp or more), which translates into greater energy savings. - Roof orientation and shading
Roofs that receive full sun and minimal shade from nearby buildings or trees offer better solar energy yield. - Structural integrity
A professional structural engineer should inspect the roof to ensure it can bear the additional weight of solar panels, mounting structures, and electrical components. - Roof lifespan
If the roof is due for replacement in the next 5–10 years, consider upgrading it before or along with the solar installation to avoid future disruptions.
2. Understanding Your Factory’s Energy Usage Profile
Before choosing a system size or installation partner, it’s crucial to understand your factory’s energy consumption patterns:
- How much electricity is used daily and monthly?
- What is your peak demand during operational hours?
- Which equipment or departments are most energy-intensive?
Most solar providers will request past 12 months’ utility bills to determine consumption trends. This helps in right-sizing the solar system to meet a meaningful percentage of your energy needs while optimizing returns.
3. Choosing the Right Solar System Type
Factory owners can choose from three main solar system configurations:
a. Grid-Tied System (Most Common)
- Connected to Singapore’s main grid via SP Group.
- Uses solar energy during the day.
- Draws power from the grid during low sunlight hours.
- Can export excess power to the grid to offset electricity bills.
b. Off-Grid System
- Not connected to the grid.
- Requires battery storage to power operations at night or during bad weather.
- Less common due to high battery costs and space constraints.
c. Hybrid System
- Combines solar panels, batteries, and a grid connection.
- Offers energy security and backup during outages.
- Suitable for critical industries with 24/7 operations.
For most industrial operations in Singapore, a grid-tied or hybrid system offers the best balance of cost, reliability, and performance.
4. Navigating Regulatory Approvals and Compliance
In Singapore, solar installations must comply with various regulatory requirements:
- Energy Market Authority (EMA): All solar systems must be registered and comply with the Code of Practice for electrical installations.
- SP Group: For grid-tied systems, approval is needed to export electricity back to the grid. A bi-directional meter may be installed.
- Building and Construction Authority (BCA): Roof loading and safety codes must be followed, and structural modifications may need BCA clearance.
- Fire Safety Guidelines: Panels must not obstruct firefighting paths or equipment access.
It is crucial to engage a licensed solar contractor familiar with local codes to handle submissions and approvals efficiently.
5. Deciding Between CAPEX or OPEX Models
There are two main ways to pay for a solar installation:
a. CAPEX (Outright Purchase)
- Factory owns the system.
- Higher upfront cost.
- Best long-term ROI (system pays for itself in 5–7 years).
- Eligible for tax incentives such as accelerated depreciation under Section 19A of the Income Tax Act.
b. OPEX (Solar Leasing or Power Purchase Agreement – PPA)
- Third-party provider installs, owns, and maintains the system.
- Factory pays only for the electricity used at a discounted rate (typically 20–30% lower than SP Group rates).
- No capital investment required.
- Ideal for companies that want immediate savings without upfront cost.
Factory owners should evaluate their financial position, expected occupancy period, and long-term plans before choosing a model.
6. Financial Benefits and ROI
One of the strongest incentives to go solar is the financial return:
- Lower electricity bills: Solar can offset 30–70% of daytime energy consumption.
- Energy independence: Insulate your business from future electricity price hikes.
- Tax savings: Accelerated capital allowances and potential grant eligibility.
- Property value appreciation: A solar-powered facility is more attractive to tenants and buyers.
A well-sized solar system typically pays back in 5 to 7 years and can generate over 20 years of free electricity thereafter.
7. Maintenance and Monitoring
Solar power systems are low-maintenance, but factories must ensure:
- Quarterly or semi-annual cleaning of panels to remove dirt, dust, or bird droppings.
- Inverter maintenance or replacement after 10–15 years.
- Real-time performance monitoring to track efficiency and energy generation.
Choose a solar provider that offers:
- A robust maintenance agreement
- Cloud-based dashboards for live monitoring
- Long warranties (20–25 years for panels, 5–10 years for inverters)
This ensures optimal output and prolongs the system’s lifespan.
8. Selecting the Right Solar Partner
A successful industrial solar installation depends heavily on the contractor. Look for providers with:
- Proven track record in large-scale commercial/industrial solar projects.
- Certifications such as BCA registration and LEW (Licensed Electrical Worker) licensing.
- End-to-end capabilities, from design to regulatory approvals and after-sales support.
- Strong warranties and quality solar components (e.g., Tier 1 solar panels, trusted inverter brands).
Ask for case studies, client testimonials, and details about system performance guarantees before signing a contract.
9. Evaluating Environmental and ESG Impact
Solar power enhances your factory’s ESG profile by:
- Reducing carbon emissions
- Supporting green building certifications (e.g., BCA Green Mark)
- Aligning with ISO 14001 Environmental Management Systems
Factories that integrate solar energy into their operations stand out in tenders, attract ESG-conscious clients, and qualify for green financing.
10. Planning for Expansion or Scalability
Factories should also think ahead:
- Is there additional roof space available for future solar expansion?
- Can the system be integrated with EV chargers or battery storage later?
- Will solar adoption support factory automation or digitization plans?
A modular and scalable solar setup ensures your energy system grows with your business.
11. Considerations for Rooftop Leasing (for Landlords)
If you own a factory building and lease it to tenants, you can:
- Lease your rooftop to a solar developer who installs a system and sells power to the tenant.
- Earn rental income from the solar rooftop space.
- Attract sustainability-focused tenants looking to reduce electricity costs.
This model is becoming popular among REITs, industrial landlords, and business park operators.
12. Risks and Mitigation Strategies
While solar is a mature and reliable technology, factory owners should be aware of:
- Weather dependency: Solar output is lower during rainy or cloudy days. Grid connection ensures consistent power.
- Initial investment risk: Use reputable providers with bankable warranties and insurance coverage.
- Underperformance: Regular monitoring and maintenance mitigate efficiency loss.
When properly planned, risks are minimal compared to the long-term benefits.
Conclusion
Adopting solar power is one of the most effective steps industrial factory owners in Singapore can take to improve cost-efficiency, energy security, and environmental compliance. With the right planning, partners, and financing strategy, solar energy can transform your facility into a high-performance, future-ready, and sustainable business asset.
As Singapore continues its push toward renewable energy adoption, now is the perfect time for factory owners to take the lead in this transition and unlock the full potential of solar energy.