Fortis Energy’s ready-to-build Nocaj project in Serbia combines 270 MWp of solar capacity with 72 MWh of battery energy storage. Commercial operation is targeted for the second quarter of 2028. The project could support corporate power purchase agreements (PPAs) structured as shaped delivery profiles rather than simple volumes of solar generation, potentially reducing industrial buyers’ reliance on residual market purchases.
Storage can shift some midday solar generation to higher-value hours, reduce imbalance and exposure to negative-price hours, and smooth output ramps. It can also help align supply with an industrial buyer’s consumption pattern or evening load. However, Nocaj’s battery can shift only a fraction of the plant’s daily output and cannot make the solar facility dispatchable in the same way as a thermal unit.
Under fixed-volume or pay-as-produced PPAs, Serbian industrial buyers remain exposed to residual electricity purchases from the market. Shaped renewable supply could reduce that exposure and potentially support stronger credit quality in the offtake structure. It could also help exporters secure more traceable low-carbon electricity without taking on the full intermittency of solar generation.
Serbian project portfolio and PPA terms
Alongside Nocaj, Fortis Energy’s projects in Serbia include Fortis Green, a separate 30 MWp solar project. Commercial operation of Fortis Green is targeted for the fourth quarter of 2027, before Nocaj’s planned start in 2028.
PPA terms would need to specify how storage is allocated between the buyer and merchant markets, how battery wear and degradation is treated, and who is responsible for balancing. Developers would also need to define what happens during prolonged periods of low renewable generation. These provisions would determine how much battery flexibility is committed to the buyer and how much can be sold into merchant markets.
Storage could shift Serbian renewable power agreements from pay-as-produced energy toward shaped industrial supply. A product could monetise the flexibility premium while clearly stating the limits of storage-based shaping, rather than presenting a solar-plus-storage plant as fully dispatchable.