The world’s third-largest toy manufacturer is going to be putting “made with wind power” labels on all those boxes of LEGOs, and not just because they bought their power from utilities with wind turbines. Kirkbi A/S, the family holding company that owns LEGO, will be buying actual wind turbines representing fully a third of an offshore wind farm, reports Reuters.

“This investment supports the Lego Group’s ambitious environmental goals,” Kirkbi Chief Executive Soren Thorup Sorensen told Reuters.

“This also provides a solid long-term investment for us with a reasonable return.”

LEGO’s share of the 277-megawatt Borkum Riffgrund 1 wind farm, which will be finished in 2015, should provide all the energy the company needs through 2020. Considering that LEGO produces 19 billion bricks every year, that’s a surprisingly efficient use of wind power.

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