Fortis Energy’s Nocaj project in Serbia has reached ready-to-build status, combining 270 MWp of solar capacity with 72 MWh of battery energy storage. Commercial operation is targeted for the second quarter of 2028. The project pairs renewable generation with storage that could support corporate power purchase agreements (PPAs) structured as shaped delivery profiles, rather than simply as volumes of solar production.
Battery storage can shift some midday solar generation into higher-value hours, reduce imbalance and exposure to negative-price hours, and smooth output ramps. It can also help shape supply to match an industrial buyer’s consumption pattern or evening load. However, the Nocaj battery can shift only a fraction of the plant’s daily output. It does not make the solar facility dispatchable in the same way as a thermal unit.
Serbian industrial buyers using fixed-volume or pay-as-produced PPAs remain exposed to residual market purchases. A shaped renewable supply product could reduce that exposure and potentially support stronger credit quality in the offtake structure. It could also help exporters obtain more traceable low-carbon electricity without taking on the full intermittency of solar production.
Fortis Energy’s Serbian portfolio and PPA terms
Alongside Nocaj, Fortis Energy’s Serbian project portfolio includes 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 for shaped supply would need to address how storage is allocated between the buyer and merchant markets.
Contracts would also need to specify how battery wear and degradation is treated and who is responsible for balancing. Developers would need to set out what happens during prolonged periods of low renewable generation. These provisions would define how much of the battery’s flexibility is committed to the buyer and how much can be sold into merchant markets.
Storage could shift renewable PPAs in Serbia from pay-as-produced energy toward shaped industrial supply. The strongest product would be transparent about the limits of storage-based shaping while monetising the flexibility premium. It would not present a solar-plus-storage plant as fully dispatchable.