As to voltage control and reactive power, wind turbines have pretty powerful electical control euipement, and actually help stabilize the network, by providing "islands of regulation" in isolated places of the network faraway from the main nodes. The French grid operatos, RTE, which used to be extremely wary of wind, is now happy to use it to keep the network humming.

In the long run, we're all dead. John Maynard Keynes