The Surendranagar ceramic profile prints 11,443 tonnes of carbon dioxide for the cluster: what factors did it use, and how do they compare with today's?

The Surendranagar profile's tonnes work back to about 1.75 kilograms of carbon dioxide for each standard cubic metre of gas and 0.96 for each kilowatt hour. Today's 2.05 and 0.675 give nearly the same total, 11,528 tonnes, but split it differently: gas 8,733 and electricity 2,795 tonnes, against its 7,460 and 3,983.

What the profile prints

• Cluster, 2017 to 2018: gas 4.26 million standard cubic metres (scm), 3,729 tonnes of oil equivalent (toe) and 7,460 tonnes of carbon dioxide; electricity 4.14 million kilowatt hours (kWh), 357 toe and 3,983 tonnes. Totals 4,086 toe and 11,443 tonnes.
• The three typical units, with gas, electricity, toe and tonnes of carbon dioxide: medium 284,038 scm, 338,706 kWh, 278 toe, 822 tonnes; small 128,880 scm, 94,514 kWh, 121 toe, 316 tonnes; micro 80,333 scm, 43,926 kWh, 74 toe, 183 tonnes.
• The profile, from The Energy and Resources Institute (TERI), prints no factors.

The factors it seems to have used

Divide its tonnes by its quantities. Gas: 7,460 tonnes over 4.26 million scm is 1.75 kilograms for each scm. Electricity: 3,983 tonnes over 4.14 million kWh is 0.96 kilograms for each kWh. These are my arithmetic, since the profile does not state them.

They fit the profile's own unit table. Medium: 284,038 x 1.751 + 338,706 x 0.962 = 497 + 326 = 823 tonnes against 822 printed. The small and micro units tie the same way, to within about one tonne. So one pair of factors runs through the whole profile.

Today's factors on the same quantities

Gas at 2.05 kilograms of carbon dioxide for each scm, the factor for piped natural gas used on this site, gives 4.26 million x 2.05 = 8,733 tonnes. Electricity at 0.675 kilograms for each kWh, the grid factor for financial year (FY) 2025-26, gives 4.14 million x 0.675 = 2,795 tonnes. The total is 11,528, within 1% of the profile's 11,443.

That match is a coincidence of two differences cancelling. The profile's gas factor is lower than today's and its electricity factor is higher. So the total survives but the split does not.

What changes in the split

• Electricity is 3,983 / 11,443 = 34.8% of the profile's total, and 24.2% on today's factors.
• Gas is 65.2% of the profile's total, and 75.8% on today's.
• Quote the profile's split to a buyer and electricity's share looks about 44% bigger than it would on today's factors (34.8 against 24.2), which could point you at the wrong fix first.

What to do

1. Take your own gas scm and kWh from your bills for the year you report.
2. Multiply by the factors for that year and name them.
3. If you cite the profile, cite its quantities, not its tonnes, or say its tonnes use different factors from today's.

The three typical units, both ways

• Medium unit: 284,038 scm and 338,706 kWh. Profile 822 tonnes; the implied factors give 823; today's factors give 811
• Small unit: 128,880 scm and 94,514 kWh. Profile 316 tonnes; the implied factors give 317; today's factors give 328
• Micro unit: 80,333 scm and 43,926 kWh. Profile 183 tonnes; the implied factors give 183; today's factors give 194

Quantities are the profile's. The implied factors are 1.751 for gas and 0.962 for electricity (my derivation). Today's are the site's gas factor and the grid factor for FY 2025-26.

What Senseible does here

Senseible reads fuel invoices and electricity bills into monthly records, so a unit's own gas, oil and power lines are on file to set beside the report's figures. It does not measure a kiln or replace an audit.

• Surendranagar ceramic units: gas and carbon per tonne
• Why project report carbon figures differ by grid factor
• Green loan readiness check

Sources: TERI, Energy profile: Surendranagar ceramic cluster (SAMEEEKSHA), IPCC, 2006 Guidelines for National Greenhouse Gas Inventories, Volume 2 Energy, CEA, CO2 Baseline Database for the Indian Power Sector

Last reviewed 2026-11-07. Profile figures are from TERI's Surendranagar ceramic cluster profile (2017 to 2018 data). The implied factors are my arithmetic on its tables. Gas factor from the Intergovernmental Panel on Climate Change (IPCC) 2006 defaults; grid factor from the Central Electricity Authority (CEA) for FY 2025-26.