Calculation doesn't match up
Posted: Sat Jan 09, 2021 10:48 am
Hi,
I am from India and thinking of starting a hydroponics farm here. For now I am in the initial stages of figuring out the cost and benefit of the system and things are not falling into place. Here are my high level calculation for lettuce production and LED electricity. For now I am ignored other cost as at this point my main consideration is to overcome the LED electricity cost.
Costing for 1 sq.ft. area:
Revenue estimation:
Spacing between plant: 4 inch
Total lettuce plant in 1 sq.ft. : 4*4 = 16
Average yield of lettuce plant: 0.5 kg/sq.ft. per cycle
Cycle time: approx 30 days
Total yield obtained: 0.5*1 = 0.5 kg
Selling price: 200 Rs/kg
Total revenue per cycle: 200*0.5 = 100 Rs.
LED cost estimation:
Wattage required for Lettuce: 40 W/sq.ft.
Watts required for 1 sq.ft. : 40*1 = 40W
Led on time: 16hrs for 30 days each (1 cycle)
Total kWh per cycle: 40*16*30/1000 = 19.2 kWh
Cost of electricity: 8 Rs./kWh
Total LED cost for 1 cycle for 1 sq.ft area = 19.2*8 = 153.6 Rs.
Total loss = 153.6-100 = 53.6 Rs
For now, I am ignoring all other cost as the LED cost are the most significant.
Is the calculation right or am I missing something here or doing something wrong?
I am from India and thinking of starting a hydroponics farm here. For now I am in the initial stages of figuring out the cost and benefit of the system and things are not falling into place. Here are my high level calculation for lettuce production and LED electricity. For now I am ignored other cost as at this point my main consideration is to overcome the LED electricity cost.
Costing for 1 sq.ft. area:
Revenue estimation:
Spacing between plant: 4 inch
Total lettuce plant in 1 sq.ft. : 4*4 = 16
Average yield of lettuce plant: 0.5 kg/sq.ft. per cycle
Cycle time: approx 30 days
Total yield obtained: 0.5*1 = 0.5 kg
Selling price: 200 Rs/kg
Total revenue per cycle: 200*0.5 = 100 Rs.
LED cost estimation:
Wattage required for Lettuce: 40 W/sq.ft.
Watts required for 1 sq.ft. : 40*1 = 40W
Led on time: 16hrs for 30 days each (1 cycle)
Total kWh per cycle: 40*16*30/1000 = 19.2 kWh
Cost of electricity: 8 Rs./kWh
Total LED cost for 1 cycle for 1 sq.ft area = 19.2*8 = 153.6 Rs.
Total loss = 153.6-100 = 53.6 Rs
For now, I am ignoring all other cost as the LED cost are the most significant.
Is the calculation right or am I missing something here or doing something wrong?