There's no explosion of wind turbines in Victoria, mate. The present government is putting every conceivable obstacle in the way, for God-only-knows what reason.
Actually there is well over 1 gigawatt of wind capacity already operating in Victoria with approx 850 towers. Add wind turbines under construction or with planning approval and the total jumps to 3 GW (or 3,000 megawatts). To me that is a VAST amount of power.
Now the problem with this is that they only have (at best) a 30% capacity factor, or in plain English, "They don't produce nuthin if the wind don't blow". So there is a need for back up power that can be turned on quickly when the wind drops.
The best compliment to wind power is hydro, as a hydro generator can go from producing nothing to full power in about 2 minutes (compared to coal which takes about 22 hours). So if you have vast amounts of hydro power (like Tasmania), wind farms are an excellent way to add generation capacity to the state grid.
Unfortunately Victoria doesn't have much spare hydro power and what we do have is mostly used to produce peak load power a few hours a day when demand is highest. This can be supplemented with extra power via the cable from Tassie, but that has a limited capacity that is pretty much fully utilised already. Likewise the Vic Govt still owns a chunk of Snowy Hydro, but this doesn't provide enough extra peak load capacity either.
So if we build more wind generation, we need another source of speedy
back up power. The only alternative to hydro is the least efficient form of gas turbine generation, (they are a bit like jet engines). These are useful for short bursts during times of peak demand, but they are very inefficient, so it makes no sense to run them 70% of the time, only producing base load electricity.
Other mainland states face a similar dilemma. That's the real reason that govt assistance to construct wind turbines and subsidies (direct and indirect) is being scaled back.
Sadly, in these times of aggressive, adversarial politics, some opportunist people have ignored these facts and have run with political sound bites saying that "the such and such party hates wind power" when realistically, which ever mob was in government, would have to scale back the assistance, because (except for Tassie) we just don't have sufficient alternative generation that can be turned on quickly when the wind drops.