Table 4 Cost savings from reducing kerosene consumption in Route 1

For rice drying

61,875 = 25 L h^− 1·12.5 h d^− 1·220 d yr^− 1·$0.9 L^− 1

25 L h^− 1: kerosene consumption

12.5 h d^− 1: dairy operation hours

220 d yr^− 1: yearly operation day

0.9 USD L^− 1: kerosene price

For greenhouses

32,076 = 11 L m^− 2 yr^− 1·3240 m² ·0.9 L^− 1

Heating period: November–March

11 L m^− 2 yr^− 1: kerosene consumption

3240 m²: 12 greenhouses (270 m² house^− 1)

0.90 USD L^− 1: kerosene price