Google has invested US$75m in a wind farm being developed in Texas, the company's second wind investment in the state.

To achieve its goal of supplanting all energy used by its operations with renewable energy, the company has been investing in generation development projects around the world. This is its 15^th such investment.

Major portion of the total amount of energy Google consumes is used by its massive data centers. The company does not feed renewable energy it buys directly to its data centers and office buildings, but uses Renewable Energy Credits from it to off-set carbon emissions associated with the energy it buys from typical utility companies that power its operations.

The 182MW wind farm is expected to come online before the end of the year. Google announced its first investment in a Texas wind farm – it bought a $200m equity stake in a 161MW project – almost exactly one year ago.

“In addition to these two projects, we’re also buying Texas wind from the Happy Hereford wind farm as part of our goal of operating on 100% renewable energy,” Nick Coons, principal, renewable energy, at Google, wrote in a blog post announcing the latest investment.

Google's renewable energy investments around the world consist mostly of large-scale wind and solar projects. It has financed wind-farm construction in Iowa and California and invested in massive solar-energy plants in Arizona and South Africa, to name a few examples.

Another big investment is in a clean-energy transmission “superhighway” called the Atlantic Wind Connection. This is an project to develop 250 miles of transmission infrastructure for energy generated by off-shore wind turbines off the mid-Atlantic coast, stretching from New Jersey to Virginia.

Google has also invested hundreds of millions of dollars into organizations that fund residential rooftop solar panels.