“You don’t want to have all your eggs in one basket,” Pascal Storck, Vaisala’s global manager of energy services, told CNBC. “You don’t want to be all in Texas and not have some mitigation strategy for when wind speeds are below average.”

Investors, though, can instantly diversify across the clean energy space through a broad ETF. For instance, PBW and QCLN include a range of alternative energy companies, including those engaged in solar photovoltaics, biofuels and advanced batteries.

Additionally, the Market Vectors Global Alternative Energy ETF (NYSEArca: GEX) and PowerShares Global Clean Energy Portfolio (NYSEArca: PBD) cover global clean energy companies. [Renewable Energy ETFs Look Like a Good Long-Term Play]

Even FAN has a global reach, with top country tilts including Spain 22.7%, Germany 16.5%, Denmark 13.6%, U.S. 12.3%, China 7.9%, Sweden 7.0%, Hong Kong 4.0%, Australia 3.4%, France 3.2% and the Netherlands 1.8%.

For more information on the wind sector, visit our wind category.

Max Chen contributed to this article.