Wind developers are retrofitting newer projects with bigger, better blades

By Frank Jossi Xcel Energy recently received approval to repower a pair of wind farms originally built in 2015 to take advantage of improved technology and expiring tax credits.

Utilities and developers are repowering wind turbines with bigger, better blades years ahead of the end of their original life expectancies as they look to take advantage of technology improvements and expiring federal tax credits.

Xcel Energy recently won approval for a $750 million plan to retrofit four wind farms in Minnesota and North Dakota, two of which were built in 2015. The oldest of the batch originally started generating power in 2008.

Wind farm contracts and

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