In the Global Wind Energy Outlook 2016 report, GWEC put forward four scenarios of installed wind capacity between 2015 and 2050.
For its most positive suggestion, the advanced scenario, a total of 5,806GW of wind capacity is predicted.
China would remain the world's largest market with 1,789GW of wind power by 2050, with North America — including the US, Canada and Mexico — combining to have 919GW.
OECD Europe could have 703GW of wind by 2050, GWEC said, ahead of Latin America (481GW) and India (452GW).
"The GWEC Advanced Scenario maintains ambitious growth rates throughout this decade, assuming that a broad, clear commitment to the decarbonisation of the electricity sector emerges quickly with the ratification of the 2015 Paris Climate Agreement," GWEC said in the report.
"Annual market size would top 100GW by the end of the decade, bringing total installed capacity to just over 879GW by 2020, and to 2,110GW by 2030, which could only occur with comprehensive and robust climate action globally and essential political will to tackle the climate challenge.
"By 2050, this scenario foresees global wind installations reaching 5,806GW. This is almost 3,000GW higher than the current baseline scenario of the long-term [new policies scenario] projections for the wind sector," the report said.