Thane's chemical profile says heat is 73% of a unit's energy, but its own table gives 59% for its API and pharmaceutical row and 86% for other chemicals: which share do I use?

Use your own bills. The Energy and Resources Institute's (TERI) Thane table gives 59% heat for the active pharmaceutical ingredient (API) and pharmaceutical row, which we take to be bulk drug units, 112.4 of 190.6 tonnes of oil equivalent (toe), and 86% for other chemicals. The text says 73%, which matches neither, nor the cluster's 77%.

What the table lines give

• API and pharmaceutical unit: heat 112.4, electricity 78.1, total 190.6 toe a year. Heat is 58.97%, call it 59%. The lines add to 190.5, so 0.1 is rounding.
• Other chemicals unit: heat 128.6, electricity 21.6, total 150.2 toe. Heat is 85.6%.
• Cluster, Table 5.2.2: natural gas 7,012, biomass 12,314 and light diesel oil, furnace oil and diesel 8,889 toe make 28,215 toe of heat out of 36,590, which is 77.1%. Electricity is 8,375 toe, 22.9%, which the profile prints as 23%.

The 73% sentence

Section 5.2.1 says "Thermal energy accounts for 73% of total energy consumption" for typical units. It matches no line. The average of 59 and 86 is 72.3, but one unit of each, added up, gives 70.7%.

Our arithmetic: 73% needs about 41% of units to be API units. The profile says more than 80% of Thane's units make bulk drugs. At 80%, the lowest it allows, the two rows blend to 63.4% heat (0.8 x 112.4 + 0.2 x 128.6 = 115.6 of 182.5 toe), and any higher share gives less. The report does not explain the 73%, so we could not find the cause.

Which share to use

1. For one unit, use its own bills. An API and pharmaceutical unit with 78.1 toe of power to 112.4 toe of heat is typical for the table.
2. For a comparison, pick the row that matches your product: 59% heat for the API and pharmaceutical row, 86% for other chemicals.
3. Use 77% only for the cluster as a whole, with its own 36,590 toe.
4. If you have seen 73% quoted for a Thane unit, it is the text of section 5.2.1, not the table.

Blending the two rows by unit mix

• 80% bulk drug units, 20% other chemicals (the lowest share the profile's more than 80% allows)
• Heat: 0.8 x 112.4 + 0.2 x 128.6 = 89.92 + 25.72 = 115.6 toe
• Total: 0.8 x 190.6 + 0.2 x 150.2 = 152.48 + 30.04 = 182.5 toe
• Heat share: 115.6 / 182.5 = 63.4%, against the printed 73%

A blend of two typical rows by unit count, our arithmetic, not a figure in the profile.

What Senseible does here

Senseible reads fuel invoices and electricity bills into monthly records, so your heat and power figures come straight from your own bills. It does not apply a cluster share to your unit.

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• Thane chemical cluster: biomass, energy and carbon
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• Benchmark plant energy against the sector

Sources: TERI, Cluster profile report: Thane chemical cluster (SAMEEEKSHA)

Last reviewed 2026-11-05. Figures are TERI's Thane profile for the Bureau of Energy Efficiency (BEE). The 41% and 63.4% are our arithmetic on its tables.