The project concept and design is based on a state-of-the-art technology of hybrid operation between the existing hydropower plant turbines of UHE with new utility-scale battery energy storage systems (BESS) to provide a quick frequency response to the national power grid, while simultaneously reducing the wear–and-tear on the hydro units, extending their overhaul interval and lifetime, improving the overall power system reliability, and reducing operational costs.
[pdf] The hybrid energy source, Energy nest, with a total current output of 30 MW to the grid, represents such a solution by combining gas turbines and battery storage, and opens a range of possible solutions for providing ancillary services for power balance.
[pdf] The new 40 MW / 80 MWh system, installed at the Dunamenti gas power plant near Budapest, is the biggest of its kind in the country and part of a broader European push to shore up renewable power with large-scale battery backup.
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