Unimasters | 23/07/2026
A BESS container arrives at Burgas. The vessel has discharged, the terminal has moved the unit to the yard, and the clock on storage fees has started. The question that determines what happens next was answered months ago, in a supply contract clause that most procurement teams treated as boilerplate: who is the Importer of Record?
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The Buyer's Desk: The Commercial Decisions That Decide a BESS Project
The decision is the Incoterm selected for the supply contract, specifically the choice between DAP (Delivered at Place) and DDP (Delivered Duty Paid) under Incoterms 2020. This choice is locked at contract signature, typically 6-9 months before the first container reaches a CEE port.
It determines not who pays for freight or insurance, but who bears the legal identity of importer, who owes customs duties and VAT to the destination country, and who carries liability for tariff classification errors that may surface years after commissioning.
The seller delivers the goods to the named destination, ready for unloading, but the buyer handles import customs clearance. The buyer is the Importer of Record (IoR). The buyer pays customs duties (2.7% ad valorem on HS 8507.60.00.90 for lithium-ion batteries) and import VAT.
The buyer is responsible for correct tariff classification and bears liability for any misclassification penalties. The buyer must hold a valid EORI (Economic Operators Registration and Identification) number in the EU member state where customs clearance occurs.
The seller delivers the goods cleared for import, with all duties and taxes paid. The seller is the Importer of Record. The seller pays customs duties and import VAT. The seller is responsible for tariff classification and bears misclassification liability.
Under Incoterms 2020, DDP places maximum obligation on the seller.
The critical distinction is not cost allocation. Both terms can be priced to achieve the same landed cost. The distinction is legal identity: who appears on the customs declaration as the party importing goods into the EU customs territory.
Any party acting as Importer of Record in the EU must hold a valid EORI number. For EU-established buyers, this is straightforward. For non-EU sellers offering DDP, the requirement creates a structural problem: a Chinese manufacturer cannot simply be the importer in Bulgaria without either establishing an EU legal entity or appointing a fiscal representative.
The hidden obligation in a DDP offer from a non-EU OEM is that the seller cannot legally fulfil the Incoterm without either an EU establishment or a fiscal representative, and the buyer often ends up bearing the consequences of this gap.
When a non-EU seller offers DDP to a Bulgarian buyer, the seller must either:
Most non-EU OEMs do neither. Instead, the freight forwarder or customs broker is instructed to clear the goods with the buyer listed as Importer of Record, while the seller pays the duties and VAT. This arrangement looks like DDP on the commercial invoice but functions as DAP in the customs declaration.
The consequence: the buyer is now liable for any tariff classification errors, even though the seller selected the HS code. If Bulgarian customs later determines that the declared code was incorrect, the assessment, interest, and penalties fall on the party named as importer, not the party who prepared the documentation.
Import VAT in Bulgaria is 20%. On a 230 MWh BESS project with approximately 40 containers, the VAT liability at import is substantial. Under genuine DDP, the seller pays this VAT. But if the seller is not VAT-registered in Bulgaria, the VAT becomes a sunk cost: the seller cannot reclaim it through a Bulgarian VAT return.
Non-EU sellers offering DDP often handle this by one of three methods:
The third method is common. It means the buyer advances the VAT, waits for reimbursement from the seller, and carries the cash flow burden. If the seller's reimbursement is delayed or disputed, the buyer has paid import VAT on goods they were promised would arrive duty paid.
The full HS code for lithium-ion BESS batteries is 8507.60.00.90. The EU third-country duty rate is 2.7% ad valorem. PCS (Power Conversion System) units, which are transformer stations with no hazard classification, have a different HS code and must be classified separately.
Misclassification errors on BESS imports typically arise from:
Under DAP, the buyer controls the customs declaration and can verify classification before filing. Under DDP, the seller (or the seller's agent) prepares the declaration, and the buyer may not see the HS codes used until after clearance. If the classification is wrong, the Importer of Record, whoever that is on the declaration, bears the liability.
EU customs authorities can audit import declarations for up to three years after clearance. A classification error discovered in 2028 on a 2026 import will generate a duty assessment, interest, and potential penalties against the party named as importer on the original declaration.
The EU Battery Regulation (Regulation (EU) 2023/1542) introduces Extended Producer Responsibility (EPR) obligations that took effect on 18 August 2025. Under Article 56, the producer of batteries placed on the EU market is operationally and financially responsible for end-of-life battery management, including collection, treatment, and recycling.
For BESS imports, the producer is typically the entity that first places the batteries on the EU market. Under DAP, this is the EU-established buyer. Under DDP, this should be the seller, but if the seller has no EU establishment, the obligation may default to the buyer anyway.
Non-EU sellers must appoint an Authorised Representative for EPR in each EU member state where they place batteries on the market. If the seller has not done so, the buyer may find themselves holding EPR obligations they did not anticipate, including registration requirements, reporting obligations, and financial contributions to collection schemes.
The EPR registration must be completed before batteries are placed on the market. A DDP contract that does not address EPR compliance leaves the buyer exposed to regulatory obligations that were supposed to be the seller's responsibility.
A CEE-based EPC contractor signed a supply contract for a 230 MWh BESS project with a non-EU integrator. The contract specified DDP Project site in Bulgaria, with the seller responsible for all duties, taxes, and import formalities. The contract price reflected this: the buyer expected to receive cleared goods with no customs involvement.
At discharge in Burgas, the freight forwarder contacted the buyer's logistics team requesting EORI details for the customs declaration. The buyer's procurement manager, unfamiliar with the distinction, provided the company's Bulgarian EORI number. The customs broker filed the declaration with the buyer as Importer of Record.
The buyer paid import VAT of 20% on the declared value, expecting reimbursement from the seller. The seller's finance team disputed the amount, arguing that the VAT should have been calculated on FOB value, not the DDP contract price. The dispute delayed reimbursement by eleven weeks.
The buyer's legal team reviewed the supply contract. The DDP clause stated that the seller was responsible for all import duties and taxes. But the customs declaration named the buyer as importer. The seller argued that the buyer had voluntarily provided their EORI and therefore accepted the importer role. The contract did not specify who would be named as Importer of Record on the customs declaration.
The buyer absorbed the assessment. The project was commissioned on time, but the landed cost exceeded the contract price by an amount that would have justified a different procurement decision.
Q: What is the difference between DAP and DDP for BESS imports?
A: Under DAP (Delivered at Place), the buyer is the Importer of Record and handles customs clearance, duties, and VAT. Under DDP (Delivered Duty Paid), the seller is responsible for all import formalities and costs. The key difference is legal identity: who appears on the customs declaration as the importing party.
Q: Can a non-EU manufacturer legally offer DDP to an EU buyer?
A: A non-EU seller can offer DDP only if they have an EU legal establishment or appoint a fiscal representative in the destination country. Without one, the seller cannot be named as Importer of Record, and the buyer may end up bearing importer obligations despite the DDP contract term.
Q: What is the customs duty rate for lithium-ion BESS batteries imported into the EU?
A: The EU third-country duty rate for lithium-ion batteries under HS 8507.60.00.90 is 2.7% ad valorem. PCS (Power Conversion System) units have a different HS classification and must be declared separately.
Q: Who is liable for HS code misclassification errors on BESS imports?
A: The Importer of Record named on the customs declaration bears liability for classification errors, regardless of which party selected the HS code. EU customs authorities can audit declarations for up to three years after clearance.
Q: What are the EPR obligations under EU Battery Regulation 2023/1542 for BESS imports?
A: The entity that first places batteries on the EU market is the producer under the regulation and must register for Extended Producer Responsibility, including obligations for collection, treatment, and recycling of waste batteries. Non-EU sellers must appoint an Authorised Representative in each EU member state where they place batteries.
Q: How long does customs clearance take for BESS containers in Bulgarian ports?
A: With perfect documentation, customs clearance takes up to 3 working days. With documentation problems (incorrect tariff codes, missing certificates, mismatched consignee data), clearance can take up to 10 working days. Storage fees accumulate from discharge.
Q: What should a buyer verify before signing a DDP contract with a non-EU BESS supplier?
A: Verify that the seller has EU establishment or a fiscal representative in the destination country, confirm the seller will be named as Importer of Record on customs declarations, require evidence of EPR registration under EU Battery Regulation 2023/1542, and include indemnification clauses for customs assessments arising from classification errors.
Next in the series
A module fails commissioning and the contract goes silent: who ships the damaged Class 9 unit back, who stocks spares, and who is the EU "producer".
