In the news

I think they've improved them a lot since then.

Myth: Building a wind farm takes more energy than it ever makes
Fact: The average wind farm will pay back the energy used in its manufacture within 3-5 months of operation4. This compares favourably with coal or nuclear power stations, which take about six months. A modern wind turbine is designed to operate for more than 20 years and at the end of its working life, the area can be restored at low financial and environmental costs. Wind energy is a form of development which is essentially reversible – in contrast to fossil fuel or nuclear power stations.

Of course they would be in on the con were there one.

Also the option isn't wind or nuclear. You have wind farms where it's windy and nuclear where it's shitty. Also Nuclear stations take 30 years to commission, so it's effectively got a huge lag between outlay and benefit..