Insight
Green energy is on the rise. In Finland, total wind power capacity grew by as much as 20 percent during 2024. Finland now has 1,835 wind turbines and 8,358 megawatts of wind power capacity. At the same time, global solar power capacity reached a record-breaking 2.2 terawatts. Rapid growth also brings challenges such as fluctuations in supply and demand, overloaded grids during peak production periods and, on the other hand, unpleasant negative electricity prices for investors.
Hybrid power plants offer a solution. They store generated electricity and feed it back into the grid later. As a business model, this is called energy arbitrage: electricity is stored when prices are low (overcapacity) and sold when market prices are high. Hybrid power can also balance the grid, for example when energy production is low but demand is high. The hybrid model also facilitates grid integration and improves the profitability of renewable projects by leveraging price fluctuations.
Energy Storage and Hybrid Controller: A Winning Combination
All renewable energy production requires flexibility mechanisms such as energy storage to support and enable participation in flexibility markets. Energy storage plays a key role here, but the decisive element is an intelligent and capable hybrid controller. The power plant has its own main controller called the Power Plant Controller (PPC) and the energy storage system has its own main controller called the Energy Management System (EMS). Between these, a hybrid controller is needed to manage both units as a whole. On the customer side, this need is currently reflected in growing interest and increasing inquiries, while the number of providers remains limited.
Enico has already taken its first steps into hybrid solutions, with the initial project combining a hydropower plant and an energy storage system. The objective of hybrid solutions is to enable future green power plants and energy storage systems to operate together so that the entire system can participate, for example, in Fingrid’s flexibility markets.
In principle, the hybrid controller is always designed as a project-specific solution for the customer’s application and is delivered as part of the energy storage system. Enico EMS enables intelligent control of the storage system while accounting for battery lifetime and interface utilization. It can be integrated into the customer’s systems to manage the energy balance between applications—such as balancing the production profile and ensuring proper load management
Substantial green transition investments are coming to Finland. The project list compiled by EK since 2021 has grown by about €21 billion in 2025, reaching a total of €308 billion. The majority of these projects still focus on electricity production, primarily wind power. From a holistic perspective, it is essential to consider energy storage and hybrid control solutions already during the project development phase.
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