My rule of thumb is simple : if someone calls it 'Alternative Energy', it means it's an alternate to having a cheap, ready supply of energy. Otherwise, it would just be called 'energy'. Nobody calls Nuclear power alternate energy, even though it's radically different to anything else that came before it in terms of generating power.
The percentage of power generated from wind globally, currently, rounded to the nearest decimal place is zero.
Trillions of dollars have been spent on windfarms and solar panels around the world, and, as the article notes, it has made zero difference to the overall energy mix. Yet it has affected national economies in real ways - the bankruptcies in Germany, Spain and elsewhere have real costs, as does taking the most basic economic input - energy - and making it more expensive for zero environmental gain at the global level. Despite the countless examples of failures to point to, the boosters insist that it's the right course, when any plain analysis shows the exact opposite.
There are plenty of people who hand-wave around the very real problems as outlined in the article, and say things like 'give it time, it will work out'. But you have to be a starry-eyed believer who trusts in state-coerced solutions to gloss over the myriad of problems of trying to jump-start essentially niche technologies into mainstream adoption.
It takes real courage to rely on human ingenuity to solve problems and come up with solutions. It's frightening to look at an issue and realise you have no answers at all.
But what's worse is to set off on a futile and damaging strategy just to be seen to be doing something, when that thing is ineffective at best, and damaging at worst due to the self-delusion inherent. This holds at the personal, family, business, state, national and global level.