Why do Surat's per machine electricity figures of 0.012 to 0.019 kilowatt hours a metre not add up to a processing house's whole unit figure?

The Bureau of Energy Efficiency (BEE) Surat manual prints average kilowatt hours (kWh) a metre of 0.012 for Saflina, 0.014 for drum washer, 0.017 for jet dyeing and 0.019 for stenter machines. Three typical units print 0.070, 0.042 and 0.193 a metre in all. The machine averages sum to 0.062 and do not rebuild any of them.

The two tables

• Per machine, kWh a metre, minimum to maximum and cluster average: Saflina machines 0.011 to 0.013, average 0.012. Drum washer 0.012 to 0.016, average 0.014. Jet dyeing 0.016 to 0.019, average 0.017. Stenter 0.018 to 0.020, average 0.019.
• Per unit, kWh a metre for three typical units: type 1 0.070, type 2 0.042, type 3 0.193.
• The manual says unit electricity use varies from 4.70 lakh (1 lakh = 100,000) to 41.11 lakh kWh a year, depending on quality, process, capacity and equipment.

The unit figures rebuild from the manual's own units

The manual's table of three typical units gives annual electricity and output: 10.78 lakh kWh for 153 lakh metres, 6.33 lakh for 150 lakh and 22.25 lakh for 115 lakh. 10.78 / 153 = 0.0705, 6.33 / 150 = 0.0422 and 22.25 / 115 = 0.1935. They match 0.070, 0.042 and 0.193 to the printed digits, which suggests, in our reading, that the three types are those same three units.

Why the machine figures cannot be added

• Adding the four averages gives 0.012 + 0.014 + 0.017 + 0.019 = 0.062. The middle unit prints 0.042, lower than that sum, and even jet dyeing plus stenter alone is 0.036. So not every metre passes all four machines, or the machine figures are measured on a different basis. The manual does not say which. Our reading.
• The machine table lists only four machines. The unit figure is a whole year's electricity for the unit, so it can include loads the table does not name, such as the effluent plant, lighting and compressors; the manual does not break it down.
• The unit with 0.193 uses nearly five times the 0.042 unit per metre. Machine averages cannot explain a gap that size. Likely causes are what the unit runs, its fabric weight and its own generation; the manual does not say.

What to send a buyer

Send the unit figure from the bills and the production register: kWh for the month divided by metres for the same month. Offer a machine split only if you have sub meters. At 0.675 kilograms of carbon dioxide (CO2) a kWh for financial year (FY) 2025-26, 0.070 is 0.047 kilograms (kg) a metre and 0.193 is 0.130. Coal and gas for the boiler and stenter are separate lines.

Unit 2 against the machine sum

• Unit: 6.33 lakh kWh / 150 lakh metres = 0.0422 kWh a metre
• Four machine averages: 0.012 + 0.014 + 0.017 + 0.019 = 0.062
• Jet plus stenter only: 0.017 + 0.019 = 0.036
• Electricity CO2: 0.0422 x 0.675 = 0.028 kg a metre

All kWh and metre figures are the manual's. The comparison and the reading that the units match are our own.

What Senseible does here

Senseible reads fuel invoices and electricity bills into monthly records, so monthly kWh from the bills sits beside the metres you processed. Machine level figures come from your own sub meters; Senseible reads the bills.

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Sources: BEE, Manual on Energy Conservation Measures in Textile Cluster, Surat, Gujarat (via SAMEEEKSHA)

Last reviewed 2026-11-05. Figures are from an undated BEE Surat manual. Use your own meter readings and the grid factor for your reporting year.