1. System Requirements for 72V 1200W Induction Cooktop (6 Hours Per Day)

1. Cooktop Power:
   • 1200W induction cooktop running for 6 hours per day.
2. Energy Consumption Calculation:
   • Energy required per day (Wh) = Power (W) × Cooking hours (h)
     • 1200W × 6 hours = 7,200Wh (7.2 kWh) per day.

2. Battery Requirements

1. Battery Voltage:
   • System operates on 72V.
   • Using 12V batteries, they must be connected in series to reach 72V.
2. Battery Capacity Calculation:
   • Required Battery Capacity (Ah) = Total Energy (Wh) ÷ System Voltage (V)
   • 7,200Wh ÷ 72V = 100Ah required.
3. Number of Batteries:
   • Each 12V battery has 100Ah capacity.
   • To achieve 72V, batteries are connected in series (6 batteries per set).
   • Total batteries required = 6 (each 12V, 100Ah).
4. Battery Cost Calculation:
   • Estimated cost of 12V 100Ah battery = $0.146 per watt.
   • Cost per battery = $0.146 × (12V × 100Ah) = $175.20 USD.
   • Total cost for 6 batteries = $175.20 × 6 = $1,051.20 USD.

3. Solar Panel Requirements

1. Daily Solar Energy Requirement:
   • 7,200Wh per day.
2. Solar Panel Output:
   • Each 200W solar panel generates about 1600Wh per day (200W × 8 hours sunlight).
   • Panels Required = Total Energy / Panel Output
   • 7,200Wh ÷ 1600Wh = 4.5 → Round up to 5 solar panels.
3. Solar Panel Cost Calculation:
   • Each 200W solar panel costs $60 USD.
   • Total cost = 5 × $60 = $300 USD.

4. Charging Controller Requirements

1. Current Calculation for Controller:
   • Required current = Total Power (W) ÷ Voltage (V)
   • 1200W ÷ 72V = 16.67A.
   • A 20A charging controller is recommended.
2. Controller Cost Calculation:
   • Estimated cost of 20A Charging Controller = $15 USD.

5. Cable Requirements and Cost

1. Required Cable Lengths:
   • Solar Panel to Charging Controller = 15 meters.
   • Charging Controller to Battery = 1.5 meters.
   • Battery to Cooktop = 1.5 meters.
   • Total cable required = 18 meters.
2. Cable Cost Calculation:
   • Estimated cost per meter = $1 USD.
   • Total cost = 18 × $1 = $18 USD.

6. Induction Cooktop Cost

• 72V 1200W Induction Cooktop Cost = $90 USD.

7. Total Cost Breakdown (in USD)

Summary

For the 72V 1200W induction cooktop, with 6 hours of cooking per day, the total cost breakdown (in USD) is approximately $1,474.20. This includes:

• 5 Solar Panels (200W each): $300.00
• 6 Acid Batteries (12V, 100Ah each): $1,051.20
• 20A Charging Controller: $15.00
• Cables: $18.00
• Induction Cooktop (72V 1200W): $90.00

This setup ensures efficient power storage and solar charging for a sustainable cooking solution.