"power versus energy
Good article, very well cited.  [User:Dick Mills]

While very many people confuse the terminology for power and energy, it is particularly embarrassing to do it in an article with such a title.   The Watt is a unit of power, the rate of consumption. Power can not be consumed.  Energy, which can be consumed, is measured in watt-hours or joules. 

The openening sentences which say, ""In 2004, the worldwide energy consumption of the human race was estimated at 15 TW with 86.3% from burning fossil fuels.[1] This is equivalent to 0.5 ZJ (= 1021 J) per year."" should be changed to ""In 2004, the worldwide energy consumption of the human race was estimated at 0.5 ZJ (=1021 J) with 86.3% from burning fossil fuels.[1]  The average rate of consumption is thus 15 TW.""   

Similarly, the labels on the the graphs should be changed. 

Unfortunately, the association of consumption with power (watts) continues throughout the article.  Again, ""The energy used to generate 2 TW of electricity is approximately 5 TW, as the efficiency of a typical existing power plant is around 38%."" is incorrect.  One needs 5 TW of power (not energy) to create 2 TW of power at 38% efficiency. 

Even more unfortunate, I worry that some of the numbers are wrong because of the confusion between power and energy.  For things like wind, where a 100 MW generator operates at only 11% capacity factor, the difference between installed capacity and average production over a long period of time is 9:1.  A dominating factor.  I checked a couple of the references cited, and they too use power and energy inconsistently.  

It will take a major rewrite to correct this article.  Both the nomenclature and the numbers need to be checked.  

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