Support contracts and project timeline
Croatia has created its first meaningful battery-investment pipeline, comprising 47 projects with a combined capacity of about 250 MWh and more than 100 MW. Authorities have signed support contracts worth about €16.3 million. Some batteries have already been completed, while the remaining projects are expected to enter operation during 2026. The overall portfolio represents roughly 250 MWh of storage capacity.
The programme’s unused funding is estimated at around €50 million, leaving only about one-third of the support envelope committed. This indicates that financing support alone has not accelerated storage deployment at the pace policymakers expected.
Revenue drivers and market development constraints
Battery economics depend on more than construction grants, according to the programme’s stated requirements for project revenue. Developers need confidence that storage can earn returns through wholesale arbitrage, balancing services, ancillary services, or behind-the-meter savings. Those revenue streams are still developing in Croatia.
Croatia’s substantial hydropower capacity already provides flexibility that batteries deliver in other power systems, which can affect short-duration storage revenue opportunities. At the same time, rapidly growing solar capacity is beginning to increase intraday price differences. Photovoltaic output tends to lower daytime prices, while evening electricity remains more valuable.
Grid access is also identified as a constraint for battery developers. Projects require clear connection rules and enough network capacity to charge and discharge without adding congestion. Large industrial consumers may face different economics from merchant storage. For factories, commercial facilities and logistics operators, batteries can reduce peak grid purchases and increase consumption of on-site solar rather than relying entirely on wholesale-market revenues.
Role of the first operating wave
The 250 MWh pipeline is described as modest compared with gigawatt-hour storage developments emerging in Romania and Greece. Even so, it is positioned as a first operating benchmark for Croatia’s battery projects. Developers, lenders and regulators will be able to assess how batteries perform across local balancing and electricity markets.
If returns from these projects are attractive, the remaining public funding could support a larger second wave. If projects struggle financially, the unused subsidy budget may indicate that market design needs adjustment rather than additional grants alone. Croatia has moved storage beyond pilot projects, with the next issue focused on whether electricity-market revenues are sufficient to make batteries investable without substantial state support.
