Frequently asked questions

Cost depends mainly on system size (kW), whether you add a battery, the equipment brands, your roof type and how complex the installation is. Batteries add significantly to the total. After a site survey we provide an itemised quotation so you can compare options side by side.

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Divide the system size by the panel wattage. For example, a 5 kW system using 550 W panels needs about 9–10 panels. The right system size comes from your consumption: use the solar calculator for a preliminary estimate, and we confirm it during the site survey.

Yes. Every kWh your panels supply is a kWh you don't buy from your electric cooperative or distribution utility, such as SOCOTECO I, SOCOTECO II or Davao Light. Savings are highest when you use electricity during the day. Your bill will still include some fixed and other charges, and energy exported under net metering is credited at a lower rate than the retail price.

Only with the right equipment. A grid-tied system without a battery shuts down during a brownout for safety. A hybrid inverter with a battery can keep selected circuits running, such as the refrigerator, lights, fans and Wi-Fi.

Not necessarily. Without a battery you still save on daytime use, and it's the lowest-cost option. A battery makes sense if you have frequent brownouts, use most of your electricity at night, or want more independence. A battery-ready hybrid inverter lets you add one later.

Quality panels are designed for decades of use, and many come with performance warranties of around 25 years or more. Output declines slowly over time; the exact rate is stated on each manufacturer's datasheet and warranty.

It depends on the chemistry, how deeply and how often the battery is cycled, and its operating temperature. LiFePO4 home batteries are typically rated for thousands of cycles, and warranties are often around 10 years. Check the warranty terms for cycle or energy-throughput limits.

Panels keep producing, but less. On heavily overcast or rainy days output can drop significantly. We size systems using average sun hours across the year, so sunnier months balance out the rainy season.

Yes, especially during the day when your panels are producing. Inverter-type air conditioners are the best match. Running air conditioning at night needs grid power or a large battery.

Roughly 5–7 square metres of unshaded roof per kW, depending on panel size and layout, so a 5 kW system needs about 25–35 m². Orientation, shading and roof condition matter as much as area, which is why we survey the roof first.

On-site installation for a typical home takes about 1–3 days. Permits and utility approvals, including net-metering applications, can take several weeks or longer depending on your local government unit and utility.

Very little: occasional cleaning if the panels get dusty, keeping an eye on your monitoring app, and a periodic inspection of wiring, connections and mounting, ideally before the rainy season.

Net metering for qualified renewable energy systems (up to 100 kW) is provided for under the Renewable Energy Act of 2008 (RA 9513) and the Energy Regulatory Commission (ERC) net-metering rules. Exported energy is generally credited against your bill at a rate set under those rules, which is lower than the full retail rate. Application requirements, fees and processing times vary by distribution utility and electric cooperative.

Utility and regulatory requirements change. Verify current rules with the ERC and your distribution utility or electric cooperative before installation.