Serbia’s Nocaj solar-storage project illustrates how battery storage can make renewable electricity more usable and predictable for exporters. Its 270 MWp solar plant is paired with 72 MWh of storage, which can help shift some output to factory consumption periods.
The EU’s definitive Carbon Border Adjustment Mechanism (CBAM) 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, but storage does not itself reduce embedded emissions or create a CBAM exemption.
Electricity evidence remains central
Owning a battery alone does not establish the compliance value of electricity under CBAM. That depends on the applicable CBAM methodology and the evidence chain used to support electricity claims.
Metering, contractual allocation, guarantees of origin where relevant, and verifiable consumption data remain essential. Storage can help exporters align renewable electricity use with predictable consumption patterns and reduce reliance on high-carbon grid purchases during selected hours, while supporting a more controlled electricity evidence package for carbon reporting.
The commercial case combines lower exposure to volatile market purchases, better capture of renewable output and stronger energy management. However, storage does not replace the underlying emissions rules or the evidence requirements for CBAM readiness.
Hourly prices shape storage value
Serbian renewable generation is becoming more exposed to hourly price and capture risk, while industrial users continue to face expensive evening periods. SEEPEX recorded Serbia’s first negative day-ahead electricity price in May 2026.
Solar-plus-storage can shift some renewable output toward factory demand and hours when grid electricity is more expensive. At Nocaj, the 72 MWh 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. Its CBAM relevance depends on documented electricity use and the applicable methodology, not storage capacity alone.
