Green power on green island: Energy transition on the Azores

With the storage technology in combination with the microgrid application, EDA aims to maximize the integration of renewable energy sources on Terceira and to ensure a reliable power supply. (Copyright: Siemens Smart Infrastructure)

Siemens Smart Infrastructure, in partnership with Fluence, was awarded a contract by the Portuguese energy provider EDA to build a battery-based energy storage system on Terceira. The project aims to make the island of the Azores archipelago more sustainable and is scheduled for completion in 2021.

The system uses Fluence’s latest generation technology, which combines factory-built hardware, advanced software and data-driven intelligence. With a power capacity of 15 megawatt (MW), the Gridstack system will be one of the largest stand-alone (island) battery-based energy storage systems in Europe. Pre-configured to handle the most demanding grid applications, it will mainly regulate frequency and voltage of the electrical grid, increase the security of supply providing spinning reserve, and absorb and store excess energy produced by renewable sources and feed it back into the grid during times of peak consumption or low production.

Reduction of more than 3,500 tons of CO2 emissions per year

Implementing this system, associated with a further expansion up to 6 MW of renewables or endogenous resources, such as geothermal, will enable the island to double its share of renewables in the medium-term, from 20-30 percent to more than 60 percent. Replacing a part of the diesel-based power supply with renewables will result in a a decrease of CO2 emissions by more than 3,500 tons per year.

To increase the system’s efficiency, a sophisticated microgrid management system will be used. It affords real-time monitoring and control of the entire infrastructure as well as prediction of energy consumption, production and usage of storage for several hours or even days based on weather forecasts.

More information: Siemens


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