The 6-Way Cooking Fuel Simulator
Stop guessing your kitchen expenses. Simulate the true 5-year ownership cost of LPG, PNG, Induction, Coil, Biogas, and Solar. We calculate 85% thermodynamic efficiencies, electricity slab-jump penalties, and hidden capital expenditures.
? How to Use This Engine
Input your current LPG usage. The engine calculates your exact thermodynamic "Useful Heat" requirement in kWh.
Adjust your local electricity rates, slab-jump penalties, and heavy setup costs (like PNG pipeline installation).
Watch the chart to see the exact month a high-cost setup (like Biogas or Solar) crosses the break-even line.
1. Household Profile & Tariffs
2. Fuels to Compare & Setup Costs
3. The Hidden Bleeds & Maintenance
*Labour/Slurry management cost.
*Extra cost/unit if jumping slabs.
*Projected yearly price hike.
Many switch to induction expecting immediate savings, only to realize their traditional round-bottomed aluminium vessels won't work. The mandatory switch to heavy-gauge magnetic stainless steel adds an unavoidable ₹2,000–₹5,000 hidden cost to Day 1 of your transition. Our engine automatically factors this in!
The Thermodynamics of Indian Cooking
Based on recent energy transition research, the primary reason LPG remains expensive is sheer thermal waste. An open gas flame operates at merely 45% thermal efficiency, radiating over half its chemical energy into the kitchen air. In contrast, magnetic induction transfers 85% of electrical energy directly into the cookware.
However, the ultimate "zero-OPEX" solutions—Biogas and Solar—come with extreme behavioral friction. Biogas demands high upfront capital (₹30k+) and daily slurry management, while Solar Cooking is restricted to daytime hours, requiring a hybrid setup for a modern urban lifestyle.
Frequently Asked Questions
Is a household Biogas plant financially viable in a city?
Mathematically yes, practically no. While a ₹35,000 biogas plant pays for itself in 3-4 years through zero fuel costs, it requires daily input of organic waste (cow dung or large amounts of food waste) and manual slurry disposal. Urban apartments lack the space and biological feedstock to sustain it.
Why include 'Solar Hybrid' instead of pure Solar Cooking?
Pure solar thermal cookers are strictly limited to direct sunlight hours (10 AM to 3 PM). Because most Indian households cook dinner after dark, a 100% solar cooking transition is impossible without massive battery storage. A "Hybrid" model (Solar by day, Induction by night) is the only realistic application.
Disclaimer & Logic Assumptions:
This calculator is a self-help planning tool for illustrative purposes only and does not constitute a contract or a legal guarantee of returns.
Calculations are based on compounded annual growth rates (CAGR) and constant interest assumptions. Actual market performance is volatile and may vary significantly.
Government schemes (SSY, PPF, NPS) have interest rates revised quarterly by the Ministry of Finance. This tool uses the current prevailing rate which is subject to change.
While Rupee Logics strives for mathematical precision, users are advised to verify final maturity values with official bank/post office records. Rupee Logics shall not be held liable for any financial decisions made based on these estimates.
Thermodynamic Cost Breakdown
5-Year Cumulative Break-Even Trajectory
Financial Discovery
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