MTOE Calculation

Energy conservation table and sample calculation for annual energy consumption in terms of MTOE

Sl. No MTOE Calculation
1 1 Kwh 860 Kcal
2 1 kg Coal / coke Gross calorific value as per suppliers (coal Company’s) fastest Certificate
3 1 Kg Charcoal 6900 Kcal or as per supplier certificate
4 1 Kg Furnace oil/Residual Fuel Oil/Low Sulphur Heavy Stock – Naptha 10.050 kcal (density = 0.9337 kg/Litre) or as per supplier  certificate
5 High Speed Diesel 11840 kcal (density = 0.8263 kg/Litre) or as per supplier  certificate
6 1  Kg Petrol 11200 kcal (density = 0.8253 kg/Litre) or as per supplier  certificate
7 1 Kg Kerosene 11,110 kcal (density of SKO= 0.7782 kg/Litre) or as per supplier  certificate
8 1 m3 Natural Gas 8,000 to 10,500 kCal or as per supplier Certificate
9 Other fuels or waste material of by products used a fuel Gross Calorific value as per the  Certificate from central / State Govt. approved laboratory.

* for the purpose of this table. 1 Kg of oil equivalent = 10,000 k-cal 1 metric tonne of oil equivalent (MTOE) = 10 × 106 Kcal

Assumption :- Annual Energy Consumption Figure

A. Electricity

1.Purchased - 2200 Lakhs kWh/Yr

MTOE Equivalent = 2200 × 105 × 860 = 1892 × 102 Million kCal
= 1892 × 108/10 × 106 = 18920 mtoe

1.Own Generation
1.Through DG Set
2.Power Generation = 288 kwh/yr
3.Diesel consumption = 7565 KL

Note :Mtoe will be calculated for Diesel input to generator,
not for the power generation from generator

mtoe Equivalent = 7565 kl (Density = 0.8263 Kg/Lit)
= 7565 × 103 × 0.8263 = 6251 × 103 Kg
= 6251 × 103 × 11840 = 74011 Million Kcal
= 74011 × 105/10 × 106
= 7401 MTOE

(iii) Co Generation

extraction

Condensing

Condensing Formulae

Power

TURBINE

TURBINE Formulae

Fuel Formulae

Coal = 80,000 T/Yr
G.C.V. = 5000 Kcal/Kg

Note : MTOE will be calculated for fuel input to the boiler, not the power generation from turbine, similarly approach may be deployed for calculating MTOE in Gas turbine

MTOE Equivalent = 80,000 × 103 × 5000
= 40 × 1010 K-cal
= 40 × 1010/10 × 106
= 40,000 MTOE

1.Direct fuel fired equivalent such as Boilers, oven, dryers, furnaces and other equipments.

Annual furnace oil consumption in furnace
= 5000 KL (Density = 0.9337 Kg / Lit)
= 5000 × 103 × 9337 = 4668 × 103 Kg
= 4668 × 103 × 10.050/10 × 104
= 4691 MTOE

Note: If fuel is used as raw materials, it should not be considered for calculating MTOE. For example, natural gas is being used a raw material as well as fuel in fertilizer plant. The quantity of Natural Gas used as a raw material may be deducted.

  • For chlor alkali manufacturing process. Hydrogen is generated as a by-product and is being used as a fuel, may be considered as a fuel input
  • In some process liquid and solid waste is being generated having a substantial heating value for example in wood based paper industry black liquor and saw dust is generated as a by-products and used for process stem generation, may be considered as a fuel input.

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