AdriaFlex seeks partners for three battery projects totalling 170 MW in Croatia

AdriaFlex, a Croatian battery energy storage developer based in Zadar, is seeking partners for three standalone utility-scale storage projects with a combined capacity of 170 MW, Balkan Green Energy News reported on 2 November. The company is addressing independent power producers, utilities and strategic investors.

What was decided. Expressions of interest can be submitted from 2 to 13 November 2026, for individual projects or for the whole portfolio. AdriaFlex proposes joint development up to ready-to-build stage, targeted for the fourth quarter of 2028, after which it could support partners with procurement and financing. According to the company, land rights are secured at all sites, local spatial plans allow battery storage, and preliminary red-flag analyses found no major constraints.

The numbers. Wind and solar together account for 44% of Croatia’s installed capacity, according to renewable industry association OIEH as cited by the outlet, while grid-scale battery storage is at a very early stage. Croatia recorded around 220 hours of negative electricity prices in the first half of 2026. AdriaFlex is also developing an early-stage pipeline of around 200 MW. “Croatia is adding wind and solar faster than it is adding the flexibility to manage them,” said the company’s co-founder and director, Santiago Mompó.

Context. In March, the Croatian Chamber of Economy (HGK) estimated that the country had only 11 MW of installed batteries and could reach 150 MW by the end of the year, while the National Energy and Climate Plan foresees 250 MW by 2030. HGK representatives then pointed to obstacles such as the still undefined grid connection fee and unclear rules on network charges for batteries. In July, Croatia’s spatial planning ministry issued guidance allowing standalone batteries in industrial and production zones before sites are designated in spatial plans, with a location permit still required, Lider reported.

What comes next. Once the expression-of-interest window closes on 13 November, an invitation to submit non-binding offers will follow. A teaser is available on request, and detailed site information will be shared in a virtual data room after a non-disclosure agreement is signed.

The country’s real-time data is on the country page