Dec. 14 (Bloomberg) — London Array, the largest offshore wind farm approved, completed its first installment phase as backers EON SE, Dong Energy A/S and Masdar Abu Dhabi Future Energy Co. seek to curb technology costs by building at scale.

The 175th and final turbine of the first 630-megawatt phase was installed yesterday, putting the project on track to be fully operational next spring, the companies said in a statement. The developers plan to add 240 megawatts in a second phase at the site off the Kent and Essex coasts.

“London Array will soon be the largest operational offshore wind farm in the world,” said Benj Sykes, head of Dong Energy’s U.K. wind business. “Building offshore wind farms of this size and larger in the future allows us to harvest the advantages of scale and is an important element of our strategy to drive down the cost of energy.”

Britain targets a 10-fold expansion in offshore wind by the end of this decade to limit fossil fuel use and create jobs. The country has tripled the portion of energy coming from renewables since 2009 and targets a 15 percent supply by 2020.

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