By Jason Deign
A project on Graciosa, Azores, has become key for the credibility of island-based storage following concerns over another plant more than 1,500km away.
The Younicos project on Graciosa is set to go live within weeks amid speculation that another attempt to power an island off renewables, in El Hierro, Canary Islands, has failed to meet expectations.
El Hierro’s Gorona del Viento plant, which combines an 11.5MW wind farm with a pumped hydro storage system, was launched with much fanfare in 2014. Its initial aim was to replace 80% of diesel generation needed for the island grid.
Last month, the plant operator revealed the EUR€82m Gorona del Viento had allowed El Hierro to run continuously off nothing but renewable energy for 55 hours.
And last week Gorona del Viento said the plant supplied 67% of the island’s power throughout July and had set a new record of 76 hours with 100% renewable production.
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