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.
| Group | Module | CRF | Without a licence |
|---|---|---|---|
| Mineral Industry | Cement Production | 2A1 | Open |
| Mineral Industry | Lime Production | 2A2 | Licence required |
| Mineral Industry | Glass Production | 2A3 | Licence required |
| Mineral Industry | Other Process Uses of Carbonates | 2A4 | Licence required |
| Chemical Industry | Ammonia Production | 2B1 | Licence required |
| Chemical Industry | Nitric Acid Production | 2B2 | Licence required |
| Chemical Industry | Adipic Acid Production | 2B3 | Licence required |
| Chemical Industry | Caprolactam, Glyoxal and Glyoxylic Acid | 2B4 | Licence required |
| Chemical Industry | Carbide Production | 2B5 | Licence required |
| Chemical Industry | Titanium Dioxide Production | 2B6 | Licence required |
| Chemical Industry | Soda Ash Production | 2B7 | Licence required |
| Chemical Industry | Petrochemical and Carbon Black Production | 2B8 | Licence required |
| Chemical Industry | Fluorochemical Production | 2B9 | Licence required |
| Chemical Industry | Hydrogen Production | 2B10 | Licence required |
| Metal Industry | Iron and Steel Production | 2C1 | Licence required |
| Metal Industry | Ferroalloy Production | 2C2 | Licence required |
| Metal Industry | Aluminium Production | 2C3 | Licence required |
| Metal Industry | Magnesium Production | 2C4 | Licence required |
| Metal Industry | Lead Production | 2C5 | Licence required |
| Metal Industry | Zinc Production | 2C6 | Licence required |
| Metal Industry | Rare Earths Production | 2C7 | Licence required |
| Non-Energy Products and Solvent Use | Lubricant Use | 2D1 | Licence required |
| Non-Energy Products and Solvent Use | Paraffin Wax Use | 2D2 | Licence required |
| Non-Energy Products and Solvent Use | Asphalt and Bitumen Use | 2D3 | Licence required |
| Non-Energy Products and Solvent Use | Solvent Use | 2D4 | Licence required |
| Electronics, Fluorinated Gases and Other Product Use | Electronics Industry | 2E | Licence required |
| Electronics, Fluorinated Gases and Other Product Use | ODS Substitutes (HFC/PFC) | 2F | Licence required |
| Electronics, Fluorinated Gases and Other Product Use | Other Product Manufacture and Use | 2G | Licence required |
| Inventory and Reporting | Inventory (2A–2G) | CRF Tablo 2 | Open |
2Quick start
- 1
Complete the inventory profile
On the start sheet, enter the reporting entity, the inventory boundary and the country.
- 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
Open the relevant modules
In the left-hand menu, fill in only the processes present at your site or in your country.
- 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
Add to inventory
Use Add to Inventory in the bottom bar on each sheet to book the result to the selected year.
- 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
| Setting | What it controls |
|---|---|
| Inventory profile | Reporting entity, inventory boundary and country. Used in the report title and PDF header; shared by all five sector tools. |
| Analysis year | The year or years results are booked to. |
| GWP version | The set used to convert CH₄, N₂O and fluorinated gases to CO₂e. |
| Tier | Chosen above each sheet; Tier 1 by default. |
| IPCC guideline edition | 2006 (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. |
| Gas | AR4 | AR5 | AR6 |
|---|---|---|---|
| CO₂ | 1 | 1 | 1 |
| CH₄ (fossil) | 25 | 28 | 29.8 |
| CH₄ (biogenic) | 25 | 28 | 27 |
| N₂O | 298 | 265 | 273 |
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| Cement type | Default | Range |
|---|---|---|
| Portland (pure) | 0.96 | 0.95–0.97 |
| Portland (≤5% limestone) | 0.91 | 0.90–0.92 |
| Masonry Cement | 0.64 | 0.64–0.64 |
| Slag-Modified Portland | 0.82 | 0.70–0.93 |
| Portland BF Slag | 0.49 | 0.28–0.70 |
| Portland Pozzolan | 0.55 | 0.28–0.81 |
| Pozzolan-Modified Portland | 0.62 | 0.28–0.95 |
| Slag Cement | 0.15 | 0.00–0.29 |
| Unknown / Mixed Production | 0.75 | 0.75–0.75 |
| Lime type | EF |
|---|---|
| High-Calcium Lime | 0.75 |
| Dolomitic Lime (developed) | 0.86 |
| Dolomitic Lime (developing) | 0.77 |
| Hydraulic Lime | 0.59 |
| Glass type | EF | Cullet |
|---|---|---|
| Float Glass | 0.21 | 10–25 % |
| Container (Flint) | 0.21 | 30–60 % |
| Container (Amber/Green) | 0.21 | 30–80 % |
| Fiberglass (E-glass) | 0.19 | 0–15 % |
| Fiberglass (Insulation) | 0.25 | 10–50 % |
| Specialty (TV Panel) | 0.18 | 20–75 % |
| Specialty (TV Funnel) | 0.13 | 20–70 % |
| Specialty (Tableware) | 0.10 | 20–60 % |
| Specialty (Lab/Pharma) | 0.03 | 30–75 % |
| Specialty (Lighting) | 0.20 | 40–70 % |
| Carbonate | EF |
|---|---|
| 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.
| Production route | EF |
|---|---|
| Conventional reforming — natural gas | 1.694 |
| Excess air reforming — natural gas | 1.666 |
| Autothermal reforming — natural gas | 1.694 |
| Partial oxidation | 2.772 |
| Average — natural gas (Europe) | 2.104 |
| Average — partial oxidation (Europe) | 3.273 |
| Plant type | EF |
|---|---|
| Plants with NSCR (all processes) | 2.0 |
| Process-integrated / tailgas N₂O destruction | 2.5 |
| Atmospheric pressure (low pressure) | 5.0 |
| Medium pressure combustion | 7.0 |
| High pressure | 9.0 |
| Plant type | EF |
|---|---|
| Old (pre-1975) plants — all processes | 19.0 |
| 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 abatement | 2.5 |
| Dual pressure (L/M) | 7.0 |
| Dual pressure (L/M) with abatement | 1.5 |
| Product and process | EF | Unit |
|---|---|---|
| Methanol (conventional reforming, NG) | 0.67 | t CO₂/t CH₃OH |
| Methanol (combined reforming) | 0.69 | t CO₂/t CH₃OH |
| Ethylene (ethane feedstock) | 1.73 | t CO₂/t C₂H₄ |
| Ethylene (naphtha feedstock) | 1.04 | t CO₂/t C₂H₄ |
| Ethylene (gas oil feedstock) | 0.86 | t CO₂/t C₂H₄ |
| EDC/VCM (balanced oxychlorination) | 0.27 | t CO₂/t EDK |
| Ethylene oxide (catalytic oxidation) | 0.86 | t CO₂/t EO |
| Acrylonitrile (SOHIO ammoxidation) | 1.00 | t CO₂/t ACN |
| Carbon black (furnace process) | 2.62 | t CO₂/t CB |
| Carbon black (thermal process) | 4.67 | t 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.
| Process | EF |
|---|---|
| Sinter Production | 0.20 |
| Coke Oven | 0.56 |
| Iron Production (Blast Furnace) | 1.35 |
| Direct Reduced Iron (DRI) | 0.70 |
| Pellet Production | 0.03 |
| Basic Oxygen Furnace (BOF) | 1.46 |
| Electric Arc Furnace (EAF) | 0.08 |
| Open Hearth Furnace (OHF) | 1.72 |
| Global Average (65% BOF) | 1.06 |
| Technology | CO₂ | CF₄ | C₂F₆ |
|---|---|---|---|
| Centre-Worked Prebake (CWPB) | 1.6 | 0.40 | 0.04 |
| Side-Worked Prebake (SWPB) | 1.6 | 1.60 | 0.40 |
| Vertical Stud Søderberg (VSS) | 1.7 | 0.80 | 0.04 |
| Horizontal Stud Søderberg (HSS) | 1.7 | 0.40 | 0.03 |
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
| Action | Where | What it does |
|---|---|---|
| Add to Inventory | Bottom bar | Books the worksheet result to the selected year. |
| Save / Sessions | Top toolbar | Saves the session in your browser; the folder icon reopens earlier sessions. |
| Work file (.ghgwork) | Sessions | Downloads every input as a file you can import on another device. |
| Carbonate and mass-balance import | Mineral and metal sheets | Loads carbonate inputs and carbon mass-balance rows in bulk. |
| Excel/CSV template | Most modules | Bulk upload of production and activity rows. |
| PDF report and Excel | Results | CRF 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 CO₂Example 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 CO₂e14Verification and quality control
| Check | Expectation |
|---|---|
| Process vs combustion | Fuel combustion in the energy tool; IPPU only for process and feedstock use |
| Clinker balance | Clinker imports and exports corrected |
| Abatement data | N₂O destruction efficiency and utilisation consistent with plant records |
| Fluorinated species | Blends split into components; the right GWP set selected |
| Year-on-year trend | Sudden jumps explained by production changes |
15Troubleshooting
| Symptom | Likely cause | Fix |
|---|---|---|
| Cement CO₂ higher than expected | Clinker exports not deducted | Fill in clinker imports and exports |
| Ammonia CO₂ counted twice | Feedstock gas also entered in the energy tool | Remove feedstock gas from the energy tool |
| Tier 3 result empty | No plant measurement data | Use Tier 2 or enter the measurement results |
| Fluorinated CO₂e changed | GWP set changed | Expected; species values follow the selected set |
| Module or tier locked | Licence or trial limit | See the pricing page for plan details |
16Glossary
| Term | Meaning |
|---|---|
| IPPU | Industrial processes and product use |
| Calcination | Thermal breakdown of carbonates into oxide and CO₂ |
| Clinker fraction | Share of clinker in cement |
| CKD | Cement kiln dust |
| ODU | Fraction oxidised during use (non-energy products) |
| HFC / PFC / SF₆ / NF₃ | Fluorinated greenhouse gases |
| ODS | Ozone-depleting substances; 2F covers their substitutes |
| CBAM | EU Carbon Border Adjustment Mechanism |
| CRF | Common 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
| Code | Measure | CRF | Typical reduction |
|---|---|---|---|
| I01 | Clinker Substitution in Cement | 2A1 | 15–35 % |
| I02 | Alternative Cement (LC3, Geopolymer) | 2A1 | 5–40 % |
| I03 | CCS for Cement Production | 2A1 | 85–95 % |
| I05 | Glass Melting Electrification | 2A3 | 30–70 % |
| I06 | Nitric Acid N₂O Abatement | 2B2 | 70–95 % |
| I07 | Adipic Acid N₂O Abatement | 2B3 | 90–99 % |
| I08 | Petrochemical Bio-based Feedstock Transition | 2B8 | 20–70 % |
| I09 | Green Hydrogen for Ammonia Production | 2B1 | 80–100 % |
| I10 | Steel — Electric Arc Furnace Transition | 2C1 | 15–78 % |
| I11 | Steel — DRI with Hydrogen | 2C1 | 80–95 % |
| I12 | Aluminium — Inert Anode Technology | 2C3 | 50–90 % |
| I13 | Increased Scrap Metal Recycling | 2C1 | 25–55 % |
| I14 | HFC Phase-Down (Kigali Amendment) | 2F | 80–85 % |
| I15 | Natural Refrigerant Transition | 2F | 85–99 % |
| I16 | SF₆ Alternatives in Electrical Equipment | 2G1 | 80–100 % |
| I17 | Refrigerant Recovery & Reclamation | 2F | 30–60 % |
Revision history
| 17 October 2026 | First edition. |