Why do Jetpur's typical unit tables turn a month into a year by 9, 10, 12 or 6?
In the Energy and Resources Institute (TERI) Jetpur profile, a cold table unit's year is 9 months of its month figure, hot table units 10, process house electricity 12 but process house lignite and briquettes only 6. Only the cold table months are explained.
Annual divided by monthly, row by row
- Cold table: electricity 1,667 kilowatt hours (kWh) a month, 15,003 a year. 15,003 / 1,667 = 9.0 months.
- Hot table: electricity 9,143 a month and 91,430 a year; wood 10.7 tonnes and 107. Both are 10 months.
- Hot table with an automatic printing machine: electricity 22,389 and 223,890; briquettes 31.8 tonnes and 318. Both 10 months.
- Process house with an automatic printing machine: electricity 238,247 and 2,858,965, which is 12 months. Lignite 750 tonnes a month and 4,500 a year; briquettes 750 and 4,500. Both 6 months.
What the profile explains
It says cold table units remain closed during the rainy season, and operate only in daytime. That fits 9 months. It does not explain the 10 months for hot tables, nor why a process house's electricity runs 12 months while its boiler fuel runs 6.
Why it matters
- The cluster fuel totals are 20 process houses times the unit: 20 x 4,500 = 90,000 tonnes of lignite and of briquettes, and 20 x 2.86 million = 57.2 million kWh, with the 20 medium units in the profile's size table, which we take to be the process houses. If boilers ran 12 months at the monthly rate, fuel would double.
- The profile's specific energy of 209 tonnes of oil equivalent (toe) per million metres divides the unit's 3,756 toe (246 electricity, 1,800 lignite, 1,710 briquettes) by output, implying about 18 million metres a year. With 12 months of fuel the unit would be 7,266 toe, and the figure per metre changes with it.
- We do not say the profile is wrong. Boiler months may be real. The point is to check months before quoting any per metre or per year figure.
For your own unit
- Count the months your boiler or heater actually ran, from fuel invoices, not a typical year.
- Use 12 months of bills with the matching months of metres printed, so the ratio is like for like.
The process house, two ways
- Printed: 246 + 1,800 + 1,710 = 3,756 toe; 3,756 / 209 = about 18 million metres
- Fuel at 12 months: lignite 750 x 12 = 9,000 t, 3,600 toe; briquettes 9,000 t, 3,420 toe
- Total with 12 months of fuel: 246 + 3,600 + 3,420 = 7,266 toe, or 404 toe per million metres at 18 million metres
- Cluster: 20 units x 4,500 = 90,000 t; at 12 months 180,000 t
The profile's toe are its figures. The 12 month case and the per metre result are our arithmetic, to show sensitivity, not a corrected figure.
What Senseible does here
Senseible reads fuel invoices and electricity bills into monthly records, so fuel and power for every month are on file, so months of running show up in the records. It does not decide how many months a typical unit runs.
Sources: TERI, Cluster profile: Jetpur textile industries (SAMEEEKSHA)
Last reviewed 2026-11-06. Figures are TERI's 2015 profile. Use your own invoices for months run.