Suddenly a lonely spot on the Portuguese coast has become the centre of the wave power industry.
The beach at Agucadoura, just north of Porto, is where electricity from the world's first wave farm is being cabled ashore. Five kilometres out to sea a Pelamis wave machine is gently riding the Atlantic swell, generating power for the Portuguese grid.
The wave farm has just been officially launched after a frustrating delay of more than a year. "We had an issue with the underwater connections", explains engineering manager, Ross Henderson. He is sitting with me in the beachfront substation which takes in the power. "I can't believe such a small thing cost the project a whole year."
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