With 4.8 average peak sun hours and rising utility rates, the payback maths in Mindanao is better than most homeowners expect.
Davao City sits in one of the sunniest corridors in the Philippines, averaging around 4.8 peak sun hours per day across the year. That figure is what actually drives your production estimate — not the wattage printed on the panel.
A typical household paying ₱6,000 a month consumes roughly 520 kWh at ₱11.50 per kWh. A 5 kW rooftop array in Davao generates about 576 kWh monthly, which is enough to offset nearly the entire daytime load and a good portion of the evening usage with net metering.
At an installed cost of around ₱280,000, that household recovers the investment in roughly five years, then enjoys another two decades of near-free daytime energy. Panels are warranted for 10 years and batteries for 5.
The variables that move the number most are shading, roof orientation and how much of your consumption happens during daylight. A site inspection is the only way to lock the estimate down.
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