1) Baseline assumptions
Cooking usage (typical household)
- 2–3 meals/day
- Induction active heating time ≈ 1.5–2 hours/day
We’ll take:
- 1.75 hours/day average
Your device
- 1600 W → 1.6 kW
Tariff (from earlier)
- Effective: ₹5–₹6/unit
- With charges: ₹6–₹7/unit all-in
2) Monthly electricity cost (induction)
Energy per day
- 1.6 kW × 1.75 h = 2.8 kWh/day
Monthly consumption
- 2.8 × 30 = 84 units/month
Cost
- At ₹6/unit → ₹504
- At ₹7/unit → ₹588
👉 Induction monthly cooking cost: ₹500 – ₹600
3) LPG cost equivalent
Standard LPG cylinder
- ~14.2 kg
- Goa price typically: ₹900–₹1100
Consumption pattern
- Average household:
- 1 cylinder lasts 25–40 days
We’ll normalize:
| Scenario | Monthly LPG cost |
|---|---|
| Efficient usage | ₹700 |
| Average | ₹900 |
| Heavy cooking | ₹1100 |
4) Direct comparison
| Metric | Induction | LPG |
|---|---|---|
| Monthly cost | ₹500 – ₹600 | ₹700 – ₹1100 |
| Cost stability | High | Volatile |
| Efficiency | High (90%+) | Moderate (40–60%) |
| Control | Precise | Manual |
| Dependency | Electricity | Supply chain |
5) Trade-off analysis (important)
Efficiency
- Induction converts most energy → heat
- LPG loses heat to surroundings
👉 Induction wins structurally
Cost predictability
- Electricity tariffs change slowly
- LPG prices fluctuate with global markets
👉 Induction more stable long-term
Practical constraints
- Induction:
- Needs compatible cookware
- Power outages affect usage
- LPG:
- Works anytime
- Better for high-heat cooking (e.g., roti, wok)
6) Hybrid strategy (most optimal in reality)
Most efficient households do:
- Induction for:
- Boiling, rice, dal, reheating
- LPG for:
- Roti, frying, heavy cooking
👉 This typically reduces LPG usage by 30–50%
7) Final conclusion
- Pure induction cooking: ~₹500–₹600/month
- Pure LPG: ~₹700–₹1100/month
- Best real-world strategy: Hybrid → lowest cost + flexibility
Bottom line
From a cost + efficiency + resilience perspective:
Induction is economically superior for daily cooking,
but LPG remains valuable as a complementary system.
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