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First of all, let us see the case of your factory. From the actual oil consumption of your factory for the use of steam boiler, you can roughly have an idea as to how much money you can save if you change fuel from oil to coal. Now we go. Please get actual record of oil consumption of your factory and see where your case will be from the left side collum of the chart below. For example, if your case is 20,000 liters a day, then you look at the 7th row. You will save Rp22,374,522 daily, or Rp559,363,062 monthly, or Rp6,712,356,740 in a year. Believe it or not, this figure(for a year) is much bigger than the cost of the boiler equipment itself.

  Oil consumption per day

  Saving Rupiah per day

  Saving Rupiah per month

  Saving Rupiah per year

  6000 liters/day

  6,712,375

  167,808,919

  2,013,707,022

  8000 liters/day

  8,949,809

  223,745,225

  2,684,942,696

  10000 liters/day

  11,187,261

  279,681,531

  3,356,178,370

  12000 liters/day

  13,424,713

  335,617,837

  4,027,414,044

  15000 liters/day

  16,780,892

  419,522,300

  5,034,267,555

  17000 liters/day

  19,018,344

  475,458,602

  5,705,503,229

  20000 liters/day

  22,374,522

  559,363,062

  6,712,356,740

  23000 liters/day

  25,730,701

  643,267,521

  7,719,299,437

  28000 liters/day

  31,324,331

  783,108,286

  9,397,299,437

  30000 liters/day

  33,561,784

  839,044,593

  10,068,535,111