Croatia opened applications on Tuesday for a €38 million household clean-energy programme that includes battery storage support for the first time. The scheme expands government incentives beyond rooftop solar as evening electricity demand becomes a growing system constraint. The programme supports solar systems for self-consumption, heat pumps and battery energy storage.
Support levels for eligible households
Under the programme, standard households can receive support for up to 50% of eligible costs. Grants for standard applicants can reach €17,850. Households classified as being at risk of energy poverty can receive up to 70%, with a cap of €24,990.
Batteries shift solar output toward evening demand
The introduction of batteries is described as the most important change from an electricity-market perspective. Croatia has expanded rooftop solar rapidly, reducing household grid demand during daylight hours. However, solar production falls before the evening consumption peak, leaving the system increasingly exposed to demand after sunset.
Croatia recorded a summer electricity-demand peak of 3,400.5 MWh at 21:00 in August. That peak exceeded both Croatia’s previous summer record and its latest winter maximum. The timing strengthens the case for behind-the-meter batteries that can shift solar electricity from the afternoon into evening consumption.
Intraday price spreads and system flexibility in Southeast Europe
Without storage, additional rooftop photovoltaic systems can increase midday supply surpluses while doing relatively little to reduce the highest post-sunset demand. Household batteries can store excess solar output rather than export it during low-value hours. Consumers can then draw on stored electricity when demand and wholesale prices are higher.
At sufficient scale, that approach could also reduce distribution-grid stress and limit evening imports. The impact will initially depend on participation, given that a €38 million programme is relatively small compared with investment needs for system-wide storage deployment. Economics are expected to vary with battery prices, household load profiles and future electricity tariffs.
Subsidy design can influence market behaviour before storage reaches large absolute volumes. Including batteries alongside solar signals indicates a policy focus on the timing of renewable generation rather than only increasing installed capacity. This shift is visible elsewhere across Southeast Europe.
Rapid solar expansion has pushed prices towards zero or occasionally negative levels during high-output hours in several regional markets. Evening electricity prices can rise above €200/MWh, widening the intraday spread. That spread increases the value of technologies capable of shifting electricity between those periods.
Role of hydropower, imports and distribution networks
Croatia can use reservoir hydropower and imports for system-level flexibility, while household batteries add flexibility closer to consumption. Batteries may be particularly relevant on distribution networks with high concentrations of rooftop photovoltaic systems.
The new programme therefore represents a transition in Croatia’s renewable policy focus from adding rooftop capacity to retaining daytime electricity for the evening peak.
