Battery storage at Serbia’s Nocaj solar project can help Serbian exporters use renewable electricity more predictably, supporting project economics and Carbon Border Adjustment Mechanism (CBAM) readiness without reducing embedded emissions by itself. The project combines 270 MWp of solar capacity and 72 MWh of storage; the EU’s CBAM definitive period began in 2026, increasing the relevance of carbon costs for covered exporters.
Steel, aluminium and cement producers may benefit commercially from a cleaner, more manageable electricity procurement profile. Storage can help align renewable supply with predictable consumption, and reduce reliance on high-carbon grid purchases during selected hours. It is not a CBAM instrument and does not create an exemption from the rules.
Serbian renewable generation is increasingly exposed to hourly price and capture risk, while industrial users face expensive evening periods. Solar-plus-storage can shift some output to factory consumption hours, including periods when grid electricity is more expensive.
Electricity evidence determines CBAM relevance
Owning a battery alone does not establish the CBAM compliance value of electricity. That value depends on the applicable methodology and the evidence chain supporting electricity claims, rather than on storage capacity alone. Metering, contractual allocation, guarantees of origin where relevant, and verifiable consumption data remain essential.
Storage can support a more controlled electricity evidence package for carbon reporting, but it does not replace the underlying emissions rules. Its role is on the energy-management side of CBAM readiness: making renewable electricity more usable and predictable, not changing the emissions attributed under the applicable methodology.
The strongest commercial case combines lower exposure to volatile market purchases, better capture of renewable output and a more manageable evidence package. For exporters, the value therefore depends on both how electricity is used and how that use is documented.
Hourly prices shape storage value
SEEPEX recorded Serbia’s first negative day-ahead electricity price in May 2026. The price milestone comes as renewable generators face hourly price and capture exposure and industrial users continue to encounter expensive evening periods.
At Nocaj, the battery is not large enough to make the solar plant fully firm. It can, however, improve output shaping and reduce imbalance in a bilateral supply arrangement. Its CBAM relevance still depends on the electricity evidence and methodology, not simply on the presence of storage.