Well, in March, one of Spain's leading universities, Universidad Rey Juan Carlos, published an authoritative study "of the effects on employment of public aid to renewable energy sources." The report pointed out: "This study is important for several reasons. First is that the Spanish experience is considered a leading example to be followed by many policy advocates and politicians. This study marks the very first time a critical analysis of the actual performance and impact has been made. Most important, it demonstrates that the Spanish/EU-style 'green jobs' agenda now being promoted in the U.S. in fact destroys jobs, detailing this in terms of jobs destroyed per job created."
The central finding of the study is that -- treating the data optimistically -- for every renewable-energy job that the government finances, "Spain's experience reveals with high confidence, by two different methods, that the U.S. should expect a loss of at least 2.2 jobs on average, or about 9 jobs lost for every 4 created."
Each wind industry job created in Spain required a subsidy of about $1.4 million. Overall, the average subsidy cost for each green job was about $800,000 (571,138 euros). And to create about 50,000 green jobs, Spain lost 110,000 jobs elsewhere in the economy, principally in metallurgy, nonmetallic mining and food processing and in the beverage and tobacco industries.
Here's a linkto the actual study.