The Firozabad glass cluster profile prints two furnace tables with different counts: which should a unit or buyer quote?

The Energy and Resources Institute (TERI) Firozabad profile prints 55 tank furnaces and 400 muffle furnaces in one table, and 45 tank furnaces and 300 muffle furnaces in another. The second comes to 3,090 tonnes a day, close to the stated 3,100; the first, at the top of its ranges, reaches 2,955.

The two tables side by side

• Table 1, glass industries in the cluster: open pot 90 furnaces at 6 to 7 tonnes a day; closed pot 25 at 4 to 5; tank 55 at 25 to 40; muffle 400. The text agrees: about 55 tank and 115 pot furnaces, and an estimated 400 muffle furnaces.
• Table 2, furnace types and capacities: open pot 95 at 7 tonnes a day; closed pot 25 at 5; tank 30 at 40, 10 at 50 and 5 at 120; muffle 300. It prints 465 units and a melt of 3,100 tonnes a day.

Adding them up

• Table 2 melt: 95 x 7 = 665, 25 x 5 = 125, 30 x 40 = 1,200, 10 x 50 = 500, 5 x 120 = 600. Total 3,090, about the printed 3,100. Units: 95 + 25 + 30 + 10 + 5 + 300 = 465, as printed.
• Table 1 melt at the top of every range: 90 x 7 = 630, 25 x 5 = 125, 55 x 40 = 2,200. Total 2,955. At mid-points it is 585 + 112.5 + 1,787.5 = 2,485. Neither reaches 3,100.
• The text says tank furnaces make about 80% of the glass. Table 2 gives 2,300 / 3,090 = 74%.

What to quote

• For your own unit, your own furnace data.
• For the cluster, say the profile gives two counts, and give both: 45 to 55 tank furnaces, 115 to 120 pot furnaces, 300 to 400 muffle furnaces.
• The cluster gas page on this site lists the first table's 55 tank furnaces and notes the second table's 45. This page is the check on them.

What it does not settle

I cannot tell which table is newer or more careful: the profile dates itself 2015 as a whole and dates neither count. Table 2 ties to the melt total, but a tie does not prove the counts are right.

Melt from each table, tonnes a day

• Table 2: 665 + 125 + 1,200 + 500 + 600 = 3,090
• Table 1, top of ranges: 630 + 125 + 2,200 = 2,955
• Gap from the printed 3,100: 10 for Table 2, 145 for Table 1

All inputs are the profile's own printed counts and capacities.

What Senseible does here

Senseible reads fuel invoices and electricity bills into monthly records, so the fuel and power lines of a furnace or kiln are on file. In the self-serve product it does not count furnaces in a cluster, so any count you quote comes from the profile or from your own association.

• Firozabad glass cluster gas use and carbon
• Firozabad tank furnace gas against melt rate
• Firozabad fuel bill column does not add
• Firozabad furnace melt temperature and time

Sources: TERI, Cluster profile: Firozabad glass industries (SAMEEEKSHA)

Last reviewed 2026-11-06. Figures are from TERI's 2015 cluster profile, which describes the cluster at that time; fuels, kiln counts and prices have moved since. Treat them as typical, and check your own records before quoting.