Joby Energy in California is testing kites flying at an average height of 400m (1,300ft) - around five times the height of a ground-based turbine - where winds are faster and more consistent.

位于加州的Joby能源公司测试风筝发电系统，将风筝放飞到400米的高度(1300英尺)，该高度大概是地面风力发电机高度的5倍，在400米的高度风力更强蕴含更高能量。

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Joby had been at a Snow Patrol concert in the Odyssey on 25 January.

BBC: Joby Murphy had been missing for about four weeks

He said it was poignant that it took place on the day of Joby's funeral.

BBC: Joby Murphy had been missing for about four weeks

It follows the death of 20-year-old Joby Murphy whose body was recovered from the River Lagan at the weekend.

BBC: Joby Murphy had been missing for about four weeks