For Serbia, the CBAM-ready product issue is not abstract. It sits directly on the country’s industrial base: steel in Smederevo, aluminium processing such as Impol Seval in Sevojno, cement producers such as Holcim Serbia/Beočin, Moravacem/Popovac and Titan Kosjerić, and fertiliser and chemical production around Elixir Prahovo. These sectors are exposed because CBAM covers cement, aluminium, fertilisers, iron and steel, hydrogen and electricity, while the EU’s definitive CBAM regime has applied from 1 January 2026. EU importers above the 50-tonne threshold must operate as authorised CBAM declarants, declare embedded emissions and surrender CBAM certificates; where a carbon price was already paid in the country of production, that amount may be deducted if proven.
The Serbian angle is shaped by one hard fact: much of Serbia’s industrial electricity still comes from a coal-heavy national system. Energy Community data for Serbia show 8,981 MW of installed electricity capacity, 34,706 GWh of generation and 35,725 GWh of gross consumption in the 2025 performance dataset, with 53.5% of electricity supply at non-regulated prices, 11 active suppliers, 5,432 GWh of day-ahead market volume and an average baseload day-ahead price of €102/MWh. EPS’s own 2025 production profile, as reported from its annual financial report, remained dominated by thermal generation, with 30,556 GWh of total output, of which thermal power plants generated 71.4%, hydropower 27.3% and CHP Pannonian TE-TO 1.3%.
That means a Serbian factory cannot credibly sell a product as CBAM-ready merely because it has a renewable certificate or ESG statement. It must prove how electricity was purchased, metered, attributed to production, converted into an emissions factor, and integrated into the CBAM embedded-emissions file. The core formula is still simple: indirect emissions = electricity consumed during production × applicable electricity emission factor. Under current CBAM rules, indirect emissions are counted for cement, fertilisers and agglomerated iron ore, while the current definitive scope is limited to direct emissions for iron/steel, aluminium and hydrogen. But steel and aluminium producers should still build electricity MRV now, because buyers, banks and future CBAM evolution are already moving in that direction; the Commission’s 2026 work on indirect emissions specifically examines default factors, actual-emissions claims, PPAs, direct technical links, verification and possible extension to additional CBAM sectors.
The Serbian electricity purchase model
For a Serbian exporter, the best hierarchy is: on-site renewable generation, then direct technical connection, then physical renewable PPA with a named asset, then green retail supply supported by certificates, and only lastly unbundled Guarantees of Origin. The reason is that CBAM is interested in evidence of production and consumption, not a marketing claim. EU guidance states that electricity consumed by a CBAM production process should be metered as active power, that grid electricity normally uses a country or region grid factor, that actual emission factors may be used in the case of PPAs if the factor is determined properly, and that specific market-based factors using instruments such as Guarantees of Origin or green certificates are not allowed to determine the electricity emission factor by themselves.
In Serbia, this creates a practical contract-design issue. A Serbian industrial buyer may want to sign a PPA directly with a wind or solar generator, but Serbian energy-law amendments removed the older requirement for renewable producers to hold a supply licence for such arrangements and instead require the inclusion of an electricity supplier as an intermediary between the producer-seller and the final customer. That pushes CBAM-ready PPAs toward a three-party or chain structure: renewable generator, licensed supplier/trader, and industrial offtaker.
The Serbian factory should therefore not sign a standard electricity contract. It should sign an Electricity Supply And CBAM Data Annex. This annex should state the generator name, technology, installed capacity, location, grid connection point, metering point, EIC codes where applicable, balancing party, licensed supplier, settlement period, delivered MWh, environmental attributes, GO handling, data rights, correction rules, audit access, and seller liability if claimed renewable electricity cannot be evidenced.
Serbia’s guarantee of origin system: Useful, but not sufficient
Serbia has an operational Guarantee of Origin framework. EMS states that a Serbian Guarantee of Origin is an electronic document whose exclusive function is to show the end customer that a certain quantity of electricity was produced from renewable energy sources; it covers 1 MWh of electricity attributes. EMS has been assigned the role of issuing body and registry operator for Serbian GOs under the Law on the Use of Renewable Energy Sources adopted in April 2021.
This is useful for Serbian exporters, but it is not enough for CBAM. A GO can support the evidence file and prevent double counting, but it cannot replace measured electricity delivery, PPA evidence and a CBAM-compatible emissions factor. The EMS EECS Domain Protocol also matters because it sets conditions for production-device registration: the production device must be located in Serbia, registered in the Serbian renewable energy producers’ registry, and not be in the current electricity production support system; EMS may verify registration data and can involve DSOs, closed distribution system operators and suppliers, with inspections required at intervals not exceeding five years.
For a Serbian CBAM-ready product claim, the GO should therefore be treated as one document in the evidence chain, not the evidence chain itself. The correct logic is: PPA plus metering plus settlement plus GO cancellation plus factory MRV allocation. A Serbian producer that relies only on “green certificates” risks having the EU buyer reject the electricity claim and revert to a Serbian grid factor.
Buyer side: What the Serbian factory must request from the electricity seller
The Serbian factory, as electricity buyer, should require the electricity seller to provide a monthly evidence pack. The pack should include the PPA or supply contract, generator identity, licence or market registration details, EMS/EDS metering references, metered generation, net delivered electricity, delivery profile, settlement data, balancing-party confirmation, invoice data, GO serial numbers where used, GO cancellation evidence, curtailment and outage records, and a statement that the same MWh has not been sold or claimed elsewhere.
The factory must also require data continuity. CBAM-ready electricity cannot be built on one annual PDF. The factory needs monthly, and preferably hourly, data that can be reconciled with production. For Serbian exporters with large EU customers, hourly matching is not only an ESG preference; it is a stronger defence against future buyer due diligence, lender review and verifier challenge. The contract should say that when the renewable asset under-delivers, the missing volume is not “green by default”. It becomes grid electricity unless covered by another verified low-carbon source.
For Serbia, this is especially important because grid-connection constraints are tightening the supply of bankable renewable PPAs. Recent Serbian energy-law changes have postponed connection-study processing for large variable renewable projects until 2029, which increases scarcity value for already operating wind, solar, hydro and bankable on-site generation projects.
Seller side: What the renewable generator or supplier must be ready to provide
The Serbian electricity seller must become a data seller, not only a power seller. A wind, solar, hydro or supplier-backed PPA should include a CBAM electricity data warranty. That warranty should confirm the origin of electricity, the generator’s metering structure, the treatment of losses, the treatment of curtailed energy, the status of GOs, the absence of double counting, and the right of the factory or its verifier to inspect the evidence.
A Serbian renewable generator should maintain a clean data room with the grid connection approval, metering scheme, monthly metered generation, EMS/DSO confirmations where available, GO registry records, maintenance logs, outage logs, balancing nominations and settlement reports. A licensed supplier sitting between the generator and the factory must pass through generator-level data. A supplier invoice that says “100% green electricity” is not enough for CBAM-ready production.
EU buyer side: What the buyer should request from the Serbian product seller
The EU importer should ask the Serbian factory for a CBAM-ready product data sheet by CN code and production site. This should show the Serbian installation, production process, production route, reporting period, tonnes produced, tonnes sold to the EU, direct emissions, indirect emissions where relevant, electricity consumption per tonne, electricity factor used, PPA-backed MWh, grid MWh, backup-generation MWh, precursor data, Serbian carbon tax paid, and verification status.
The EU buyer should also require a Serbia electricity evidence annex. This annex should include the PPA chain, generator identity, EMS/EDS metering references, GO handling, data reconciliation, and the method by which electricity is allocated to the relevant production process. The buyer should not accept a claim that all EU-bound product is “green” unless the production process itself can support that allocation. CBAM does not work like a loose mass-balance marketing system. Where the same installation and same production process produce the same CN-code goods for EU and non-EU customers, the factory generally needs a weighted process-level emissions intensity rather than an artificial split.
Integration into Serbian factory MRV
The Serbian factory MRV system should be built around five ledgers: production ledger, fuel and process-emissions ledger, electricity ledger, precursor ledger and carbon-price-paid ledger.
The electricity ledger is the new critical layer. It should record all grid imports, PPA-backed electricity, on-site renewable generation, backup diesel or gas generation, electricity exports, auxiliary consumption and production-line consumption. Each MWh should be classified by evidence status: verified PPA, on-site renewable, direct connection, grid supply, backup generation or unverified supply. Each category then receives the correct emissions factor.
The product calculation should then produce a specific electricity intensity. For example, a Serbian cement or fertiliser plant consuming 100,000 MWh and producing 500,000 tonnes has a gross electricity intensity of 0.20 MWh/t. If 60,000 MWh are covered by a verified PPA and 40,000 MWh are ordinary grid supply, the embedded electricity emissions must be calculated from that weighted mix. The plant cannot simply allocate all low-carbon electricity to EU-bound shipments unless the production boundary, metering and allocation methodology support it.
The Serbian carbon tax module is also important. Serbia introduced a national carbon dioxide emissions tax of €4/tCO₂efrom 1 January 2026, together with a carbon-intensive imports tax framework. The EU Delegation to Serbia states that this should allow CBAM charges on Serbian products placed on the EU market to be reduced by €4/t, provided the emissions were already taxed under Serbia’s national system. But this is not a substitute for CBAM MRV. It is a carbon-price-paid deduction item, and the Serbian rate remains far below the EU ETS-linked CBAM certificate price.
Sector-specific Serbian implications
For cement, the electricity-purchase framework is immediately relevant because cement importers must declare both direct and indirect emissions. Serbian cement plants in Beočin, Popovac and Kosjerić should integrate electricity MRV with clinker production, grinding, cement blending, alternative fuels, thermal energy and product dispatch. The highest-value buyer request will not be “do you buy green electricity?” but “show me the electricity intensity per tonne, the emission factor used, the PPA evidence and the verifier-ready calculation file.”
For fertilisers and chemicals, especially production linked to Elixir’s Serbian platform, the same electricity logic matters because fertilisers are one of the CBAM sectors where indirect emissions are in scope. Elixir Prahovo’s site is relevant because the company states it produces 165,000 tonnes of phosphoric acid annually and has 300,000 tonnes of NPK fertiliser capacity; newer MAP/tMAP investments also strengthen the need for product-specific electricity and precursor MRV.
For steel, the immediate CBAM burden is more focused on direct emissions, especially for blast-furnace/basic-oxygen-furnace routes such as HBIS Serbia in Smederevo. HBIS Serbia describes its Smederevo plant as producing iron at two blast furnaces, then converting blast-furnace iron to raw steel through a converter shop and continuous casting before hot and cold rolling. Electricity purchasing will not fully solve that direct-emissions profile, but it matters for downstream products, buyer procurement, future indirect-emissions expansion, and any “green steel” positioning toward EU customers.
For aluminium processing, the issue is similar but more buyer-driven. Impol Seval describes itself as Serbia’s largest aluminium processor and sole manufacturer of aluminium rolled products, with markets in Europe and America. Current CBAM rules treat aluminium as direct-emissions-only, but EU buyers are likely to request electricity evidence because aluminium supply chains are highly electricity-sensitive and because indirect-emissions expansion remains under review.
Verification logic
The final test is not whether the Serbian exporter has an attractive sustainability claim. It is whether an accredited verifier can follow the data trail. The Commission’s CBAM Q&A says actual emissions embedded in goods imported from 1 January 2026 must be verified by an accredited CBAM verifier; the verifier checks the operator’s embedded-emissions calculation, and the declarant includes both the operator calculation and verification report in the CBAM declaration.
For Serbian exporters, pre-verification should happen before the EU buyer’s annual declaration cycle. The practical sequence is: define CBAM CN codes and installation boundaries, map the electricity-purchase chain, install or validate production-line meters, reconcile electricity invoices with EMS/EDS and supplier data, build the PPA/GO evidence file, calculate product-level embedded emissions, test the Serbian carbon-tax deduction file, and submit the package to pre-verification before the EU buyer locks procurement terms.
The strongest Serbian commercial offer will therefore not be “green product”. It will be CBAM-ready Serbian product with verified production MRV, verified electricity procurement, product-level emissions allocation and carbon-price-paid documentation. That is the difference between a supplier selling a commodity into the EU and a supplier selling a lower-risk, customs-ready, buyer-auditable industrial input.
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