A 72 MWh battery at Serbia’s Nocaj solar project can make renewable electricity more predictable for exporters, supporting project economics and readiness for the Carbon Border Adjustment Mechanism (CBAM). Storage does not itself reduce embedded emissions or create a CBAM exemption.
The project pairs 270 MWp of solar capacity with storage that can shift some generation towards factory consumption periods. The EU CBAM definitive period began in 2026, increasing the relevance of carbon costs for covered exporters, including steel, aluminium and cement producers.
Battery storage is not a CBAM instrument and cannot replace the rules for calculating emissions. It can help exporters align renewable electricity use with predictable consumption patterns and reduce reliance on high-carbon grid purchases during selected hours.
Electricity claims require evidence
The compliance value of stored electricity depends on the applicable CBAM methodology and the evidence chain, not simply on owning a battery. Metering and contractual allocation are among the requirements for documenting electricity use; guarantees of origin where relevant and verifiable consumption data also remain essential.
A more controlled electricity evidence package can support carbon reporting, but it does not replace underlying emissions rules. The commercial case for storage combines lower exposure to volatile market purchases, better capture of renewable generation and stronger energy management.
Hourly prices affect project economics
Serbia’s renewable generation is increasingly exposed to hourly price and capture risk, while industrial users face expensive evening periods. SEEPEX recorded Serbia’s first negative day-ahead electricity price in May 2026.
Solar-plus-storage can shift some output to hours when factories consume electricity and grid power is more expensive. At Nocaj, the battery is not large enough to make the solar plant fully firm, but it can improve output shaping and reduce imbalance in a bilateral supply arrangement.
Storage can therefore strengthen the energy-management side of CBAM readiness for exporters, but the value of electricity claims still depends on the relevant methodology and documented evidence. The battery does not, on its own, establish CBAM compliance.