In 2003, Suzlon ventured into international markets with an order from DanMar to supply 24 turbines in southwestern Minnesota, United States and set up an office in Beijing, China.

[5] Suzlon reached a definitive agreement for acquisition of Belgian firm Hansen Transmissions, specializing in gearboxes for wind turbines, for $565 million in 2006 and purchased a controlling stake in Germany's Senvion valued at US$1.6 billion in 2007.

[1] In November 2009, the company decided to sell 35% stake of Hansen for $370 million as part of its debt restructuring program and appointed Bank of America Merrill Lynch and Morgan Stanley as the managers and book runners.

[10] In the same month, it also achieved full control of its German subsidiary REpower Systems (now Senvion) by acquiring the remaining 5% stake held by minority shareholders for EUR 63 million.

[14] On 22 January 2015, Suzlon announced the sale of Senvion, its wholly owned subsidiary, to Centerbridge Partners, a private equity firm in a deal valued at ₹7,200 crore (US$830 million) to reduce the debts.

[15] In a further equity infusion, Dilip Shanghvi, the founder of Sun Pharmaceuticals, agreed to purchase a 23 percent stake in Suzlon for a sum of ₹1,800 crore (US$210 million).