Every tonne of steel, ready with its emissions figure.

We prepare the data European importers, PROPER and the Energy Ministry ask for at every plant phase and process unit, then bring it together on Ailesh+.

See your phase Talk to us about your plant

European importers now pay for your steel's emissions.

Your emissions per tonne and slag balance are reused by CBAM, PROPER and energy-management reports. Calculate them once per unit, properly, and those figures protect both your price and your rating.

Risk

Since early 2026, EU importers carry the cost of the embedded emissions in the iron and steel they buy. Without verified actual data from your plant, they fall back on default values that already include a mark-up.

30 Sep 2027, the deadline for the first declaration and certificate surrender covering 2026 imports.

According to the European Commission, 2026; HSF Kramer, 2026

Opportunity

Scrap-based EAF steel emits far less CO₂ per tonne than the blast furnace route. Energy efficiency and renewable power cut both your costs and the figure importers pay for.

2.34 vs 0.69 tCO₂ per tonne of crude steel, BF-BOF against scrap-EAF.

According to worldsteel, 2025

Priority

Install energy meters and continuous emissions monitoring (CEMS) per unit, set the emissions base year, then record the origin of every scrap lot and every slag buyer. That data fills importer declarations, PROPER and energy-management reports at once.

EU CBAM (Regulation (EU) 2023/956 as amended by 2025/2083)
definitive regime since 1 Jan 2026; certificates on sale from February 2027
Importers above 50 tonnes a year surrender certificates for embedded iron and steel emissions. An extension to downstream steel products is under negotiation.
According to the European Commission, 2026; Reed Smith, 2025; Mayer Brown, 2026
PROPER (Environment Ministry Regulation 7/2025)
annual cycle
In PROPER, the national environmental performance rating, any participant under administrative sanction is rated Red, while Green and Gold are verified on site.
According to the BPK legal database; KLH/BPLH, 2025 and 2026
Energy management (Government Regulation 33/2023; Energy Ministry Regulation 8/2025)
in force since March 2025
Industrial users of 4,000 tonnes of oil equivalent (TOE) a year or more must appoint an energy manager, audit at least every three years and report by 30 June.
According to the BPK legal database

From feasibility to route change, one figure per tonne.

The production route chosen at feasibility sets the emissions figure importers will read years later. Pick your phase to see what needs to be ready.

Phase 1: One route choice, decades of emissions.

The choice between blast furnace, DRI or scrap-based EAF sets the plant's emissions intensity and energy bill. Power and scrap supply around the site decide which route is realistic.

What needs to be ready

- 1.1
  1.1 Production route and CBAM exposure
  Compare each route's emissions intensity, then build CBAM certificate prices into the feasibility model.
  - Market compliance
  - Carbon+
- 1.2
  1.2 Power and scrap supply
  Test transformer and transmission capacity with PLN, the state utility, then map imported and domestic scrap supply around the site.
  electricity accounts for about 18% of national steel-sector emissions
  According to the ASEAN Centre for Energy, 2025
  - Decarbonisation strategy
  - Energy+
- 1.3
  1.3 Air, sea and coastal-village baseline
  Record ambient air, seawater quality, fishing lanes and vulnerable groups around the site before land is cleared.
  - Social impact
  - Social+

Phase 2: The cheapest efficiency is built into the drawings.

The environmental impact assessment (AMDAL), the emissions and wastewater technical approvals and the hazardous-waste store specification all cite the same drawings. Heat recovery and closed water circuits cost far less to add now than to retrofit once the furnace is lit.

What needs to be ready

- 2.1
  2.1 Unit-by-unit AMDAL and parallel approvals
  Write the environmental management and monitoring plan (RKL-RPL) unit by unit, from stockpile to jetty, and fix CEMS points on every main stack.
  According to Government Regulation 28/2025 and Environment and Forestry Ministry Regulation 13/2021
  - Environmental permits
  - PROPER+
- 2.2
  2.2 Energy and water design against the green standard
  Design furnace gas recovery, scrap preheating and closed-loop cooling against the Green Industry Standards (SIH) for steel.
  According to Industry Ministry Regulations 12/2023, 41/2024 and 45/2024
  - Energy efficiency
  - Energy+
- 2.3
  2.3 LCA and EPD from the design stage
  Set up a per-unit data inventory so one figure serves buyers' environmental product declarations (EPDs) and CBAM embedded emissions, precursors included.
  - LCA & product footprint
  - Carbon+

Phase 3: The compliance record starts before the furnace is lit.

Piling and jetty works bring sediment and complaints before a single tonne of steel is made. Stacks already fitted with CEMS ports shorten the trial runs in the next phase.

What needs to be ready

- 3.1
  3.1 Settling ponds and seawater quality
  Build settling ponds before land is cleared, then record seawater quality around the jetty as the operating reference.
  - Water audit
  - Waste+
- 3.2
  3.2 CEMS ports and meters fitted during the build
  Fit sampling ports on stacks, a flow meter at the wastewater outlet and electricity meters per panel as construction goes.
  - Emission & methane monitoring
  - IoT
- 3.3
  3.3 Contractor workers and safety
  Apply the occupational safety management system (SMK3), record contractor wages and hours, and keep community grievances apart from worker grievances.
  According to Government Regulation 50/2012
  - Social impact
  - Social+

Phase 4: Your first-year figures become your CBAM figures.

Importer declarations, energy-management reports and the intensity PROPER rates all refer to the base year recorded now. Validated CEMS and per-unit meters make that figure verifiable by a third party.

What needs to be ready

- 4.1
  4.1 Operating certificates (SLO) and CEMS on SISPEK
  Finish trial runs of the wastewater plant and emission controls, then connect main-stack CEMS to SISPEK, the ministry's monitoring network, before the trial period ends.
  According to Environment and Forestry Ministry Regulations 5/2021 and 13/2021
  - Emission & methane monitoring
  - IoT
- 4.2
  4.2 Per-unit greenhouse gas inventory
  Calculate Scope 1 from coke, coal, gas, lime and electrodes, and Scope 2 from electricity, for every process unit.
  - GHG accounting
  - Carbon+
- 4.3
  4.3 Energy manager and first audit
  Appoint an energy manager, then set kWh per tonne at the EAF and GJ per tonne at the reheating furnace as benchmarks.
  mandatory from 4,000 TOE a year
  According to Energy Ministry Regulation 8/2025
  - Energy audit
  - Energy+

Phase 5: Energy, slag and water decide rating and price.

Evidence of energy efficiency, slag use and water balance decides the step up to Green, and a CBAM verifier checks the same energy data.

1 iron and steel company has held a Green PROPER rating three years running.

According to Warta Ekonomi, 2026

What needs to be ready

- 5.1
  5.1 Slag and mill scale as products
  Use slag and mill scale under the hazardous-waste exemption conditions, and route the rest through the hazardous-waste store with electronic manifests.
  According to Government Regulation 22/2021, Annex XIV
  - Waste-to-X
  - Waste+
- 5.2
  5.2 Auditing significant energy uses
  Audit the EAF, reheating furnace, compressors and rolling, then carry out the recommendations within three years.
  550 vs >800 kWh per tonne, electric against gas-fired rolling and finishing
  According to the ASEAN Centre for Energy, 2025
  - Energy audit
  - Energy+
- 5.3
  5.3 Verified embedded emissions for importers
  Prepare actual emissions per product, including precursors such as hot metal and billet, so importers don't fall back on default values.
  - Market compliance
  - Carbon+

Phase 6: Changing route means a new permit and clean ground.

Moving to DRI-EAF lowers emissions intensity, especially when the power comes from renewables. That change in feedstock and capacity requires an amended Environmental Approval and remediation of the old units' ground.

up to 64% lower than the blast furnace, for natural-gas DRI on renewable power.

According to the ASEAN Centre for Energy, 2025

What needs to be ready

- 6.1
  6.1 Amending the Environmental Approval
  File the addendum before the retrofit starts, since changing feedstock or capacity without amending the permit can now be fined.
  According to Government Regulation 22/2021, Annex V, and Environment Ministry Regulation 6/2026
  - Environmental permits
  - PROPER+
- 6.2
  6.2 Base year and CBAM recalculated
  Update CEMS points for the new stacks and recalculate embedded emissions per product, so the reduction shows up in importer declarations.
  - GHG accounting
  - Carbon+
- 6.3
  6.3 Remediating the old units' ground
  Clean up contaminated slag-yard and pickling ground until it is formally declared complete, then keep monitoring the groundwater.
  According to Environment and Forestry Ministry Regulation P.101/2018
  - Environmental permits
  - Waste+

The units that set your per-tonne figure.

Embedded emissions, energy and waste status are counted unit by unit. Open them one by one.

Jetty, stockpiles and scrap yard

Ore, coal and lime are unloaded at the jetty, while imported and domestic scrap is sorted before it reaches the furnace.

Emissions
Water
Safety
Community

What you can manage

Spray stockpiles and fit wind screens
Scan every scrap lot at a radiation portal
Record origin, supplier and tonnage for every lot

Market compliance
Carbon+

Sinter, coke and blast furnace

Fine ore is sintered and coal turned into coke, then both reduce the ore to hot metal in the blast furnace.

Emissions
Energy
Waste
Safety

What you can manage

CEMS on the sinter stack, linked to SISPEK
Recover furnace gas for power generation
Replace part of the PCI with biocarbon

2.34 tCO₂ per tonne of crude steel, global BF-BOF average

Source: worldsteel, 2025

Decarbonisation strategy
Carbon+

BOF and EAF

The BOF blows oxygen into hot metal, while the EAF melts scrap or DRI with an electric arc into liquid steel.

Emissions
Energy
Waste
Safety

What you can manage

Track EAF kWh per tonne and power factor
Preheat scrap with off-gas
Send EAF dust to a licensed processor

0.69 tCO₂ per tonne of crude steel, global scrap-EAF average

Source: worldsteel, 2025

Energy audit
Energy+

Casting and hot rolling

Liquid steel is cast into slab or billet, reheated, then hot-rolled into coil, plate or bar.

Energy
Water
Waste

What you can manage

Closed-loop cooling and scale pit treatment
Log GJ per tonne at the reheating furnace
Assess electrifying reheating

6% lower emissions per tonne with a tundish plasma heater

Source: ACE, 2025

Energy efficiency
Energy+

Pickling, galvanising and coating

Coil is pickled in HCl, cold-rolled, then coated with zinc or paint for automotive and construction markets.

Waste
Water
Emissions
Energy

What you can manage

Regenerate spent HCl in an acid regeneration plant
Send pickling sludge and zinc dross to the hazardous-waste store
Calculate LCA per tonne for buyers' EPDs

1.27–2.84 GJ per tonne, green-standard energy range for coated sheet

Source: Regulation 12/2023

LCA & product footprint
Carbon+

Utilities and captive power

The air separation unit makes oxygen, the captive plant burns furnace gas, and cooling towers supply water across the plant.

Energy
Emissions
Water

What you can manage

Log ASU and compressor power as significant uses
Control cooling tower blowdown
Add rooftop solar and a renewable power purchase agreement

18% of national steel-sector emissions come from electricity

Source: ACE, 2025

Decarbonisation strategy
Energy+

Dedusting and stacks

ESPs and baghouses capture dust at every stack, and CEMS send particulate, SO₂ and NOx data to SISPEK.

Emissions
Waste
Safety

What you can manage

Validate CEMS and the SISPEK link regularly
Manually test stacks without CEMS at an accredited lab
Manage baghouse dust by its waste status

Slag yard and mill scale

Furnace slag, mill scale and EAF dust are collected, sorted and processed into aggregate or cement feed, or disposed of.

Waste
Water
Community

What you can manage

Use slag under the hazardous-waste exemption conditions
Monitor leachate and groundwater around the yard
Record the recipient of every slag load

Waste-to-X
Waste+

Wastewater and cooling circuits

Coke oven, pickling and blowdown wastewater is treated for metals, phenol and ammonia before reuse or discharge.

Water
Waste

What you can manage

Monitor Zn, Fe, Cr, phenol and ammonia at the outlet
Return treated effluent to the cooling circuit
Send treatment sludge to the hazardous-waste store under manifest

8.50 m³ withdrawn and 2.30 m³ consumed per tonne, global average

Source: worldsteel, 2025

Water audit
IoT

Product store and haulage

Coil, plate and billet are loaded onto trailers or ships, while slag and EAF dust leave by the same roads.

Emissions
Community
Safety

What you can manage

Weigh every truck and refuse overloads
Calculate transport emissions per tonne-km
Prepare transport data for buyers' EPDs

US$27.97 billion of Indonesian iron and steel exports in 2025

Source: Trade Ministry via CNBC Indonesia, 2026

GHG accounting
Carbon+

Coastal villages and workforce

Employees and contractors rotate through furnace and rolling halls, while nearby fishing villages take the dust and traffic.

Community
Safety

What you can manage

Work permits for confined space, CO and molten metal
An emergency plan shared with the village
Measure fisher and small-business programmes with SROI

42 of 67 work fatalities at worldsteel members in 2024 were contractors

Source: worldsteel, 2025

Social impact
Social+

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Typical facility illustration; not a specific site.

One per-tonne figure for importers and regulators.

Without a single source, production, energy and sustainability teams calculate emissions per tonne with different numbers, and the gap surfaces at verification. Ailesh+ brings it together: meters and CEMS through IoT, energy in Energy+, emissions and scrap supplier data in Carbon+, and slag and EAF dust in Waste+. PROPER+ and ESG+ then build your reports from that same source.

Meet Ailesh+Try the demo

Which phase is your steel plant in?

Tell us the phase. We'll map the figures and documents that need to be ready.

Email us at [email protected]Check your products' CBAM exposure, free

Every tonne of steel, ready with its emissions figure.

European importers now pay for your steel's emissions.

Risk

Opportunity

Priority

EU CBAM (Regulation (EU) 2023/956 as amended by 2025/2083)

PROPER (Environment Ministry Regulation 7/2025)

Energy management (Government Regulation 33/2023; Energy Ministry Regulation 8/2025)

From feasibility to route change, one figure per tonne.

Phase 1: One route choice, decades of emissions.

What needs to be ready

1.1 Production route and CBAM exposure

1.2 Power and scrap supply

1.3 Air, sea and coastal-village baseline

Phase 2: The cheapest efficiency is built into the drawings.

What needs to be ready

2.1 Unit-by-unit AMDAL and parallel approvals

2.2 Energy and water design against the green standard

2.3 LCA and EPD from the design stage

Phase 3: The compliance record starts before the furnace is lit.

What needs to be ready

3.1 Settling ponds and seawater quality

3.2 CEMS ports and meters fitted during the build

3.3 Contractor workers and safety

Phase 4: Your first-year figures become your CBAM figures.

What needs to be ready

4.1 Operating certificates (SLO) and CEMS on SISPEK

4.2 Per-unit greenhouse gas inventory

4.3 Energy manager and first audit

Phase 5: Energy, slag and water decide rating and price.

What needs to be ready

5.1 Slag and mill scale as products

5.2 Auditing significant energy uses

5.3 Verified embedded emissions for importers

Phase 6: Changing route means a new permit and clean ground.

What needs to be ready

6.1 Amending the Environmental Approval

6.2 Base year and CBAM recalculated

6.3 Remediating the old units' ground

The units that set your per-tonne figure.

Jetty, stockpiles and scrap yard

Sinter, coke and blast furnace

BOF and EAF

Casting and hot rolling

Pickling, galvanising and coating

Utilities and captive power

Dedusting and stacks

Slag yard and mill scale

Wastewater and cooling circuits

Product store and haulage

Coastal villages and workforce

One per-tonne figure for importers and regulators.

Which phase is your steel plant in?