Is the technology in place to switch to Wind power?

The technology exists to switch to wind power but wind power will never be a sole energy source. As with many other alternative forms of energy, the cost to install the equipment and convert over is expensive. If you wanted to spend tens of thousands of dollars, you can buy a windmill for your home and run your house on wind power. One thing about wind power is that it is hard to store the energy.

wind power technology is advanced enough to harvest it commercially

but wind is unreliable and hence it cannot be fully relied
it can provide a fraction of power to the power grid but not the whole power and not continuously

Wind power needs to be but one of the green energy sources we should be using. You can build a wind generator yourself, the cost will depend on both the size and how good you are with your hands. It is not a difficult job, but you do need to be able to work to close tolerances when making the turbine blades.
And storing wind energy is no more difficult than storing energy from solar panels. It all goes into your battery bank.