5 things before switching to solar energy

Writer : Therese Arden Incorporado

5 things before switching to Solar Energy:

Before making the leap to solar, it’s essential to fully understand the 5 key things to consider before switching to solar for your commercial property in the Philippines. From assessing initial costs and available incentives, to evaluating your roof’s condition and suitability, determining your energy needs, navigating local regulations, and planning for maintenance and warranty, each factor plays a crucial role in the success and long-term benefits of your solar investment. Taking the time to evaluate these areas ensures your system is efficient, compliant, and tailored to your business goals—maximizing both savings and sustainability.

1. Initial Costs and Incentives

Commercial solar systems in the Philippines require significant upfront capital—especially for medium to large-scale setups. Costs include not just the panels, but also inverters, mounting systems, labor, permits, and potentially battery storage.

However, these costs can be mitigated through several financial mechanisms:

  • Government incentives:The Philippines has programs under the Renewable Energy Act of 2008 that offer tax holidays, zero VAT on sales of renewable energy equipment, and priority access to the grid.
  • Net metering:Under the Net Metering Law (RA 9513), commercial users generating excess electricity can sell it back to the grid at a blended generation cost.
  • Financing options:Solar leasing, Power Purchase Agreements (PPAs), and bank loans tailored for green energy can spread costs over time, reducing the burden on cash flow.

Investing in solar may seem costly at first, but ROI is often seen within 5–7 years, with long-term energy savings continuing for 20+ years.

2. Roof Condition and Suitability

For commercial buildings, the roof plays a critical role in solar viability. Before installation:

  • Structural integritymust be assessed. Can the roof handle the added weight of panels and racking systems?
  • Size and layout:Large, unobstructed flat or gently sloping roofs are ideal. Warehouses, factories, and malls typically offer good installation spaces.
  • Sun exposure:The Philippines enjoys abundant sunshine year-round, but shading from nearby buildings or trees can reduce system efficiency. A professional site assessment will evaluate sun access using tools like solar pathfinders or drone surveys.
  • Orientation and tilt:While orientation isn’t as crucial near the equator, panels facing south or tilted at around 10–15 degrees usually perform best in the Philippines.

3. Energy Needs and System Size

Accurate sizing is essential for maximizing ROI in commercial solar installations. Businesses should:

  • Audit past electricity billsto understand peak usage and demand charges.
  • Match system capacityto consumption patterns—factories with heavy daytime usage benefit most.
  • Plan for future growth:Consider potential increases in energy demand when sizing your system.

Oversizing can lead to wasted generation, especially if net metering caps are in place. Undersizing may result in insufficient savings. Solar providers typically use historical data and simulation software to determine the optimal system size.

4. Local Regulations and Utility Policies

Commercial solar installations in the Philippines are subject to local and national regulations:

  • Permits and clearances:Businesses must secure building permits, electrical permits, and often environmental compliance certificates.
  • Utility interconnection:Each electric cooperative or distribution utility (like Meralco) may have its own requirements for connecting a solar system to the grid.
  • Net metering limitations:While RA 9513 supports net metering, implementation can vary. Some utilities place caps on system size (often up to 100 kW for net metering), which affects how much power can be sold back.

Consulting with local authorities and working with experienced installers can streamline this process.

5. Maintenance and Warranty

While solar panels have no moving parts and are relatively low-maintenance, commercial systems include components that may need regular checks:

  • Inverters(which convert DC to AC power) may need replacement after 10–15 years.
  • Batteries, if included, require more frequent inspection and eventual replacement depending on the chemistry used (e.g., lead-acid vs. lithium-ion).
  • Warrantiesvary:
  • Panels: Typically 25 years for performance and 10–15 years for product defects.
  • Inverters: Often 5–10 years, with options to extend.
  • Installation/workmanship: Ensure the solar provider offers at least a 5-year service warranty.

Routine monitoring systems are also recommended for commercial setups to detect performance drops, identify faults, and schedule preventive maintenance.

Conclusion

Switching to solar energy for your business in the Philippines is not just an environmentally responsible move—it’s also a strategic financial decision. While the upfront investment may seem steep, the long-term savings, government incentives, and growing reliability of renewable technology make solar an increasingly attractive option for commercial property owners.

By understanding your energy needs, ensuring your site is suitable, and working with trusted solar providers, your business can take full advantage of the country’s abundant sunlight and move toward energy independence. It’s a forward-thinking investment that not only reduces operational costs but also enhances your company’s sustainability credentials.

Frequently Asked Questions (FAQs)

  • How long does it take to recover the investment from a commercial solar installation?
    Most commercial solar systems in the Philippines have a payback period of 5 to 7 years, depending on system size, energy consumption, and financing options.
  • What happens during cloudy days or brownouts?
    Solar panels still produce energy during cloudy weather, albeit at reduced capacity. For brownouts, unless your system has battery backup or is hybrid/off-grid, it will shut down for safety reasons if connected to the grid.
  • Are there banks or financing institutions that support solar projects in the Philippines?
    Yes, several local banks and financing firms offer green energy loans or solar financing programs for businesses, such as DBP, Landbank, and various private banks and ESCOs.
  • Is solar viable for leased commercial properties?
    Yes, but the property owner’s approval is usually required. Lease terms should also account for system ownership, removal, or transfer at the end of the lease.

What if your business could cut energy costs, reduce carbon emissions, and future-proof operations—just by switching to solar?

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