LPG Cost Per Cooking Hour

At ₱1,100 for an 11 kg tank (₱100/kg) and a typical 9,500 BTU/hr burner at 50% pan-to-flame efficiency, one burner uses about ~0.43 kg/hr of LPG and costs around ₱43/hr to run. A full 2-burner stove blasting at 100% is ~₱87/hr. Real cooking rarely uses both burners on max — most homes spend ₱10–25/day total on gas.

The DOE Petroleum Industry Management Bureau publishes a weekly retail price monitor for LPG cylinders by brand (Petron Gasul, Solane, Shellane, Liquigaz) and by region. Tank prices vary by ₱100–250 between provinces, and provincial mountain barangays often pay 20% more. Refill price (vs new tank with shell) is what matters once you own the cylinder.

It's the fraction of LPG energy that actually heats your pan vs escapes as wasted heat around the pot. Old open-flame stoves: 35–45%. Modern domestic 4-burner stoves: 50–60%. Commercial high-pressure burners with focused flames: 60–70%. A clean burner with a flat-bottomed heavy pan that just covers the flame wastes the least. Doubling efficiency literally halves your peso/hour.

For a typical Filipino household cooking 1.5 hours/day on a single burner at 9,500 BTU/hr with 50% efficiency, an 11 kg tank lasts about ~17 days (≈₱65/day, ₱1,950/month). Heavy cooks running both burners 3+ hours/day burn through it in 7–9 days. Sari-sari karenderyas using one burner 6 hours/day on a 22 kg tank: ~12 days.

Roughly equal in 2026. Induction is ~85% efficient vs LPG ~50%, so induction needs ~half the kWh-equivalent input. At ₱12/kWh electric vs ~₱100/kg LPG (≈₱2.17/MJ), induction is slightly cheaper per delivered MJ for slow simmering, but LPG wins for high-power wok cooking where the burner is brief and intense. Bigger factors: upfront cost, blackout reliability, and your pan compatibility with induction.

Box ratings are lab maximums at calibrated pressure. Real-world output drops 10–25% at PH regulator pressure (28 mbar), if the orifice has carbon buildup, or if the tank is nearly empty (pressure drop). For sizing, use the box number; for actual bills, expect to use 10–15% more gas than the math predicts.

Petron Gasul and Solane are usually similarly priced. Liquigaz and Shellane sit at the same tier. Generic refillers ('non-branded') can be 10–15% cheaper but watch for under-filling (legal limit ±2%, but some shortchange 5–10%). DTI's standard weigh checks help — ask the dealer to weigh the cylinder before payment.

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