Version 1.0 · Last reviewed 17 October 2026

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CarbonTiers · User guide

IPPU Tool User Guide

Industrial Processes and Product Use (IPPU) Emissions Inventory & Scenario Tool

2006 IPCC Guidelines for National Greenhouse Gas Inventories — Volume 3: Industrial Processes and Product Use

This guide explains how to calculate industrial process and product use (IPPU) emissions in the tool: the mineral, chemical and metal industries, non-energy use of fuels, electronics, ODS substitutes and other products, fluorinated gases, CBAM-covered goods, CRF Table 2 results, scenario modelling and reporting. Every count and factor table in it is generated from the calculation engines the tool runs on.

28
calculation modules
7
IPCC category groups (2A–2G)
15
HFC/PFC species (ODS substitutes)
16
industry mitigation options
Version
1.0
Last reviewed
17 October 2026
Current edition
carbontiers.com/calculator/ippu/guide

This guide is updated with the tool. Counts and factor tables are generated from the registries the tool calculates with. The latest edition is always at the address above.

1About the tool

The IPPU tool calculates CO₂, CH₄, N₂O and fluorinated gas (HFC, PFC, SF₆, NF₃) emissions from the chemical or physical transformation of raw materials and from greenhouse gases used in products, with the methods of the 2006 IPCC Guidelines, Volume 3. It is built for national inventory teams, industrial sites and exporters preparing CBAM data in any country.

Modules and CRF categories
GroupModuleCRFWithout a licence
Mineral IndustryCement Production2A1Open
Mineral IndustryLime Production2A2Licence required
Mineral IndustryGlass Production2A3Licence required
Mineral IndustryOther Process Uses of Carbonates2A4Licence required
Chemical IndustryAmmonia Production2B1Licence required
Chemical IndustryNitric Acid Production2B2Licence required
Chemical IndustryAdipic Acid Production2B3Licence required
Chemical IndustryCaprolactam, Glyoxal and Glyoxylic Acid2B4Licence required
Chemical IndustryCarbide Production2B5Licence required
Chemical IndustryTitanium Dioxide Production2B6Licence required
Chemical IndustrySoda Ash Production2B7Licence required
Chemical IndustryPetrochemical and Carbon Black Production2B8Licence required
Chemical IndustryFluorochemical Production2B9Licence required
Chemical IndustryHydrogen Production2B10Licence required
Metal IndustryIron and Steel Production2C1Licence required
Metal IndustryFerroalloy Production2C2Licence required
Metal IndustryAluminium Production2C3Licence required
Metal IndustryMagnesium Production2C4Licence required
Metal IndustryLead Production2C5Licence required
Metal IndustryZinc Production2C6Licence required
Metal IndustryRare Earths Production2C7Licence required
Non-Energy Products and Solvent UseLubricant Use2D1Licence required
Non-Energy Products and Solvent UseParaffin Wax Use2D2Licence required
Non-Energy Products and Solvent UseAsphalt and Bitumen Use2D3Licence required
Non-Energy Products and Solvent UseSolvent Use2D4Licence required
Electronics, Fluorinated Gases and Other Product UseElectronics Industry2ELicence required
Electronics, Fluorinated Gases and Other Product UseODS Substitutes (HFC/PFC)2FLicence required
Electronics, Fluorinated Gases and Other Product UseOther Product Manufacture and Use2GLicence required
Inventory and ReportingInventory (2A–2G)CRF Tablo 2Open

2Quick start

  1. 1

    Complete the inventory profile

    On the start sheet, enter the reporting entity, the inventory boundary and the country.

  2. 2

    Set the analysis year and GWP set

    Add one or more years; select and confirm AR4, AR5 or AR6. Fluorinated gases use the species values of the selected set.

  3. 3

    Open the relevant modules

    In the left-hand menu, fill in only the processes present at your site or in your country.

  4. 4

    Enter production and feedstock data

    Tier 1 needs product output; Tier 2/3 take site-specific factors, feedstock and carbon mass-balance data.

  5. 5

    Add to inventory

    Use Add to Inventory in the bottom bar on each sheet to book the result to the selected year.

  6. 6

    Review and export

    Check CRF Table 2 and the breakdown by gas in Results, then download PDF or Excel.

3Start sheet and core settings

SettingWhat it controls
Inventory profileReporting entity, inventory boundary and country. Used in the report title and PDF header; shared by all five sector tools.
Analysis yearThe year or years results are booked to.
GWP versionThe set used to convert CH₄, N₂O and fluorinated gases to CO₂e.
TierChosen above each sheet; Tier 1 by default.
IPCC guideline edition2006 (default) or the 2019 Refinement. Changes the nitric acid, fluorochemical, iron and steel, aluminium, electronics, ODS substitute and other-product defaults. The hydrogen (2B10) and rare-earth (2C7) modules come from the 2019 Refinement. The setting is shared with the other sector tools.
GWP100 values — CO₂, CH₄, N₂O (fluorinated gases use species values on top)
GasAR4AR5AR6
CO₂111
CH₄ (fossil)252829.8
CH₄ (biogenic)252827
N₂O298265273

4Mineral industry (2A)

Calculates CO₂ from calcination in cement, lime, glass and other carbonate uses. Carbonate inputs can be loaded in bulk with a shared import toolbar.

CO₂ (cement, Tier 1) = [Σ (Cement_i × Clinker fraction_i) − Clinker imports + Clinker exports] × EF_clinker
2006 IPCC Vol. 3, Equation 2.1. Tier 1 uses EF_clinker = 0.52 t CO₂/t clinker (CKD-corrected).
Clinker fraction by cement type (Tier 1)
Cement typeDefaultRange
Portland (pure)0.960.95–0.97
Portland (≤5% limestone)0.910.90–0.92
Masonry Cement0.640.64–0.64
Slag-Modified Portland0.820.70–0.93
Portland BF Slag0.490.28–0.70
Portland Pozzolan0.550.28–0.81
Pozzolan-Modified Portland0.620.28–0.95
Slag Cement0.150.00–0.29
Unknown / Mixed Production0.750.75–0.75
Emission factor by lime type (t CO₂/t lime)
Lime typeEF
High-Calcium Lime0.75
Dolomitic Lime (developed)0.86
Dolomitic Lime (developing)0.77
Hydraulic Lime0.59
Emission factor by glass type (t CO₂/t glass) and typical cullet share
Glass typeEFCullet
Float Glass0.2110–25 %
Container (Flint)0.2130–60 %
Container (Amber/Green)0.2130–80 %
Fiberglass (E-glass)0.190–15 %
Fiberglass (Insulation)0.2510–50 %
Specialty (TV Panel)0.1820–75 %
Specialty (TV Funnel)0.1320–70 %
Specialty (Tableware)0.1020–60 %
Specialty (Lab/Pharma)0.0330–75 %
Specialty (Lighting)0.2040–70 %
Carbonate emission factors (t CO₂/t carbonate, Table 2.1)
CarbonateEF
Calcite / Aragonite (CaCO₃)0.440
Magnesite (MgCO₃)0.522
Dolomite (CaMg(CO₃)₂)0.477
Siderite (FeCO₃)0.380
Ankerite (Ca(Fe,Mg,Mn)(CO₃)₂)0.442
Rhodochrosite (MnCO₃)0.383
Soda Ash (Na₂CO₃)0.415

5Chemical industry (2B)

Covers ammonia, nitric acid, adipic acid, caprolactam, carbide, titanium dioxide, soda ash, petrochemicals, fluorochemicals and hydrogen production. The main gases are CO₂ (ammonia, petrochemicals), N₂O (nitric acid, adipic acid, caprolactam) and HFC-23 (fluorochemicals). The adipic acid Tier 1 factor is 300 kg N₂O/t product.

Ammonia production route and CO₂ factor (t CO₂/t NH₃)
Production routeEF
Conventional reforming — natural gas1.694
Excess air reforming — natural gas1.666
Autothermal reforming — natural gas1.694
Partial oxidation2.772
Average — natural gas (Europe)2.104
Average — partial oxidation (Europe)3.273
Nitric acid N₂O factor by plant type (kg N₂O/t HNO₃) — 2006 Guidelines
Plant typeEF
Plants with NSCR (all processes)2.0
Process-integrated / tailgas N₂O destruction2.5
Atmospheric pressure (low pressure)5.0
Medium pressure combustion7.0
High pressure9.0
Nitric acid — 2019 Refinement (by pressure regime)
Plant typeEF
Old (pre-1975) plants — all processes19.0
Single low pressure (L/L)5.0
Single medium pressure (M/M)8.0
Single high pressure (H/H)9.0
Single pressure with abatement technology (all levels incl. NSCR)2.5
Dual pressure (M/H)9.0
Dual pressure (M/H) with abatement2.5
Dual pressure (L/M)7.0
Dual pressure (L/M) with abatement1.5
Petrochemical products — Tier 1 CO₂ factor
Product and processEFUnit
Methanol (conventional reforming, NG)0.67t CO₂/t CH₃OH
Methanol (combined reforming)0.69t CO₂/t CH₃OH
Ethylene (ethane feedstock)1.73t CO₂/t C₂H₄
Ethylene (naphtha feedstock)1.04t CO₂/t C₂H₄
Ethylene (gas oil feedstock)0.86t CO₂/t C₂H₄
EDC/VCM (balanced oxychlorination)0.27t CO₂/t EDK
Ethylene oxide (catalytic oxidation)0.86t CO₂/t EO
Acrylonitrile (SOHIO ammoxidation)1.00t CO₂/t ACN
Carbon black (furnace process)2.62t CO₂/t CB
Carbon black (thermal process)4.67t CO₂/t CB

6Metal industry (2C)

Covers iron and steel, ferroalloys, aluminium, magnesium, lead, zinc and rare earths. Iron and steel use process-based factors at Tier 1 and a carbon mass balance at Tier 2; 10 ferroalloy types are defined. Aluminium yields CO₂ from anode consumption and PFCs (CF₄, C₂F₆) from anode effects; magnesium yields SF₆.

Iron and steel process factors (t CO₂/t product, Tier 1)
ProcessEF
Sinter Production0.20
Coke Oven0.56
Iron Production (Blast Furnace)1.35
Direct Reduced Iron (DRI)0.70
Pellet Production0.03
Basic Oxygen Furnace (BOF)1.46
Electric Arc Furnace (EAF)0.08
Open Hearth Furnace (OHF)1.72
Global Average (65% BOF)1.06
Aluminium — CO₂ by technology (t/t Al) and Tier 1 PFC factors (kg/t Al)
TechnologyCO₂CF₄C₂F₆
Centre-Worked Prebake (CWPB)1.60.400.04
Side-Worked Prebake (SWPB)1.61.600.40
Vertical Stud Søderberg (VSS)1.70.800.04
Horizontal Stud Søderberg (HSS)1.70.400.03

7Non-energy products and solvents (2D)

  • Lubricants: 7 lubricant types; default oxidised-during-use fraction (ODU) 0.20 (Eq. 5.2–5.3).
  • Paraffin wax: ODU by application, default 0.20.
  • Asphalt and bitumen: road paving and roofing; Tier 1 only.
  • Solvent use: 4 use categories; CO₂ from the fossil carbon share. Tier 1 only.

8Electronics, ODS substitutes and other products (2E–2G)

  • Electronics (2E): fluorinated gases and heat-transfer fluids in semiconductor, flat-panel display and photovoltaic manufacturing. With the 2019 Refinement selected, a separate panel opens with the updated Tier 1/2 factors and destruction efficiencies.
  • ODS substitutes (2F): refrigeration and air conditioning (8 sub-applications; 12 under 2019), foams (22 sub-applications), aerosols (5), fire protection and solvents. 15 HFC/PFC species and 6 refrigerant blends are defined.
  • Other products (2G): SF₆ in electrical equipment (Sealed Pressure Equipment (MV switchgear — ≤52 kV); Closed Pressure Equipment (HV switchgear / GIS / circuit breakers — >52 kV); Gas Insulated Transformers (GIT)), medical and other N₂O use, military and research applications, and sound-proof windows.

9CBAM-covered goods

Industrial process emissions are the core of the embedded emissions of goods covered by the EU Carbon Border Adjustment Mechanism. These modules calculate the direct process emissions of those goods:

  • Cement (2A1): process CO₂ from clinker calcination.
  • Iron and steel (2C1): reductant carbon on the blast furnace, BOF, electric arc furnace and DRI routes.
  • Aluminium (2C3): CO₂ from anode consumption and PFCs from anode effects.
  • Fertiliser chain: ammonia (2B1) CO₂ and nitric acid (2B2) N₂O.

10Results and CRF Table 2

Everything added to the inventory comes together in Results in the CRF Table 2 structure: 2A mineral, 2B chemical, 2C metal, 2D non-energy products, 2E electronics, 2F ODS substitutes and 2G other products, by gas (CO₂, CH₄, N₂O, HFCs, PFCs, SF₆, NF₃) and as CO₂e with the selected GWP set.

11Scenario modelling

  • The Scenario module builds BAU and mitigation pathways from the IPPU results in your inventory; a scenario cannot be built on an empty inventory.
  • Mitigation scenario: shows the deviation at milestone years from measures chosen among 16 industry options (Annex A) — lower clinker ratios, cement CCS, N₂O abatement, green hydrogen and the shift to electric arc furnaces, among others.
  • Years between milestones are filled with the method you choose: linear, exponential, S-curve, polynomial, step or custom.
  • The least-cost pathway, which optimises industry together with power, transport and buildings, is part of the National Reporting Suite.

12Saving, importing and exporting

ActionWhereWhat it does
Add to InventoryBottom barBooks the worksheet result to the selected year.
Save / SessionsTop toolbarSaves the session in your browser; the folder icon reopens earlier sessions.
Work file (.ghgwork)SessionsDownloads every input as a file you can import on another device.
Carbonate and mass-balance importMineral and metal sheetsLoads carbonate inputs and carbon mass-balance rows in bulk.
Excel/CSV templateMost modulesBulk upload of production and activity rows.
PDF report and ExcelResultsCRF Table 2 report with header block, and the workbook.

During a trial or without a licence you can calculate, save and preview the report as a watermarked PDF. Excel, image and unwatermarked PDF outputs need a paid licence. Work files and blank import templates are always available.

13Worked examples

Example 1 — Cement plant, Tier 1. 1,000,000 t of cement a year, Portland (pure); no clinker imports or exports.

Clinker = 1,000,000 t × 0.96 = 960,000 tCO₂ = 960,000 t × 0.52 = 499,200 t CO₂

Example 2 — Nitric acid plant, Tier 1. 100,000 t HNO₃ a year (100% basis), plant type: medium pressure combustion; no abatement.

N₂O = 100,000 t × 7.0 kg/t = 700 t N₂OCO₂e (AR5) = 700 × 265 = 185,500 t CO₂e
Figures are rounded; the tool calculates at full precision.

14Verification and quality control

CheckExpectation
Process vs combustionFuel combustion in the energy tool; IPPU only for process and feedstock use
Clinker balanceClinker imports and exports corrected
Abatement dataN₂O destruction efficiency and utilisation consistent with plant records
Fluorinated speciesBlends split into components; the right GWP set selected
Year-on-year trendSudden jumps explained by production changes

15Troubleshooting

SymptomLikely causeFix
Cement CO₂ higher than expectedClinker exports not deductedFill in clinker imports and exports
Ammonia CO₂ counted twiceFeedstock gas also entered in the energy toolRemove feedstock gas from the energy tool
Tier 3 result emptyNo plant measurement dataUse Tier 2 or enter the measurement results
Fluorinated CO₂e changedGWP set changedExpected; species values follow the selected set
Module or tier lockedLicence or trial limitSee the pricing page for plan details

16Glossary

TermMeaning
IPPUIndustrial processes and product use
CalcinationThermal breakdown of carbonates into oxide and CO₂
Clinker fractionShare of clinker in cement
CKDCement kiln dust
ODUFraction oxidised during use (non-energy products)
HFC / PFC / SF₆ / NF₃Fluorinated greenhouse gases
ODSOzone-depleting substances; 2F covers their substitutes
CBAMEU Carbon Border Adjustment Mechanism
CRFCommon Reporting Format used for UNFCCC reporting

17References

  • IPCC (2006). 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Volume 3: Industrial Processes and Product Use.
  • IPCC (2019). 2019 Refinement to the 2006 IPCC Guidelines, Volume 3.
  • IPCC AR4 WG1 Table 2.14, AR5 WG1 Table 8.7, AR6 WG1 Table 7.SM.7 — GWP100 values.
  • UNFCCC. Common Reporting Format, Table 2 (IPPU).

Annex A — Industry mitigation options

16 options · typical reduction, relative to the targeted source
CodeMeasureCRFTypical reduction
I01Clinker Substitution in Cement2A115–35 %
I02Alternative Cement (LC3, Geopolymer)2A15–40 %
I03CCS for Cement Production2A185–95 %
I05Glass Melting Electrification2A330–70 %
I06Nitric Acid N₂O Abatement2B270–95 %
I07Adipic Acid N₂O Abatement2B390–99 %
I08Petrochemical Bio-based Feedstock Transition2B820–70 %
I09Green Hydrogen for Ammonia Production2B180–100 %
I10Steel — Electric Arc Furnace Transition2C115–78 %
I11Steel — DRI with Hydrogen2C180–95 %
I12Aluminium — Inert Anode Technology2C350–90 %
I13Increased Scrap Metal Recycling2C125–55 %
I14HFC Phase-Down (Kigali Amendment)2F80–85 %
I15Natural Refrigerant Transition2F85–99 %
I16SF₆ Alternatives in Electrical Equipment2G180–100 %
I17Refrigerant Recovery & Reclamation2F30–60 %

Revision history

17 October 2026First edition.
IPPU Tool User Guide (PDF) | CarbonTiers