Croatia clears 313,162 renewable energy guarantees of origin as wind dominates auction volumes

Croatia’s renewables market showed strong appetite for certified electricity in its latest guarantees of origin (GO) auctions, where all 313,162 certificates offered by HROTE and ENNA Next were sold. The results underline how quickly demand can absorb renewable-backed certificates—while also highlighting that wind remains the dominant source within the country’s GO trading activity.

All certificates cleared in six parallel sessions

The auctions for electricity held on 28 April were conducted as six parallel sessions through the CROPEX trading platform IT system. Certificates covering wind, biogas, biomass and solar generation were traded under the GO framework, with HROTE and ENNA Next collectively offering 313,162 GOs that were fully cleared.

HROTE: wind leads at €1.32 per GO

HROTE sold 258,578 GOs linked to Croatian wind power plants producing electricity in Q1 2026. Those wind certificates cleared at a price of €1.32 per GO. Alongside this, HROTE also sold 30,483 GOs from biomass power plants for the same production period at €1.26 per GO.

Together, these volumes represented the largest share of auction activity, with wind generation assets driving most of the traded quantity.

ENNA Next: diversified batches and higher value for imported wind

ENNA Next’s sales were spread across smaller but more varied groups of certificates. It sold 15,026 GOs from Croatian wind power plants tied to January and February 2026 production at €1.30 per GO. It also sold 8,082 GOs from German wind power plants for Q1 2026 production at a higher €1.45 per GO.

The pricing difference reflected a stronger valuation for imported renewable certificates within this auction cycle.

Smaller contributions from biogas, solar and biomass

Additional volumes included 360 GOs from biogas plants, 296 GOs from solar plants and 337 GOs from biomass plants. All of these certificates corresponded to production between December 2025 and February 2026 and cleared at €1.22 per GO.

What the auction results suggest

Overall, the auction outcomes point to steady demand for renewable-backed certificates in Croatia’s market. Wind guarantees dominated trading volumes, while price differentiation across technologies and between domestic and imported origins suggests investors are not valuing all renewable attributes uniformly—an important signal for how certificate supply may be priced as the market matures.