Romania’s Siminoc Hybrid Wind-Solar Park, developed by Eurowind Energy Romania, shows how renewable project design is changing merchant trading risk in SEE. The project combines 24.8 MW of wind and 24.8 MW of solar capacity, for a total of 49.6 MW, with expected annual production of about 120 GWh. Construction is planned for 2027, with commissioning in 2028.
The trading logic behind hybrid assets is increasingly compelling. Standalone solar projects are exposed to midday price compression as more photovoltaic capacity enters the system. Standalone wind projects face profile risk when wind output is concentrated during low-price periods or when forecast errors increase balancing costs. Combining wind and solar can produce a more diversified generation profile, improve grid-use efficiency and reduce exposure to a single technology curve.
For merchant traders and offtakers, that matters. A hybrid project can support more stable production forecasts, more attractive PPA structures and better hedge design. It can also use the same grid connection more efficiently, which is critical in Romania and across SEE as connection queues become tighter.
The Siminoc project is located in Constanța County, a region with strong renewable resources and strategic proximity to Romania’s wider Black Sea energy system. It sits inside a market that is simultaneously developing offshore gas, distribution-grid upgrades, batteries and long-duration storage concepts. That makes the project part of a larger system transformation rather than a standalone renewable asset.
Hybridisation does not remove merchant risk. Prices, balancing costs, curtailment and grid constraints remain material. But it changes the shape of risk. A combined wind-solar profile can reduce the extreme dependence on one production pattern and create better optionality for future storage integration.
For traders, hybrid assets are more interesting than simple generation projects because they create portfolio value. Their output can be paired with batteries, industrial offtake, guarantees of origin and balancing strategies. Romania’s next renewable cycle will increasingly favour projects designed around market behaviour, not only resource quality. Siminoc points in that direction.
