All told, the energy consumed from all three modern consoles will cost U.S. consumers an estimated $1 billion in energy costs this year, consuming enough electricity to light all the homes in Houston, the fourth-largest city in the country, the NRDC estimated.
Now, do not laugh, depending on where you live and what you budget is, energy consumption can be a pretty big deal, and consumption for 2 out of the 3 current gen machines are getting quite high:

^Those are the Killowat hours a year, each console is estimated to use.
I"n the USA electricity is still relatively cheap, but costs will rise due to new standards being enacted by the EPA http://dailycaller.com/2014/06/02/epa-admits-climate-rule-will-raise-electricity-prices/ and the struggles of the US dollar, among other reasons, and will likely eventually catch the prices seen in Europe. But do not expect European prices to go down, either.... :

Right now in the USA, est. yearly cost.
Wii U - $4.44
PS4 - $21.72
X ONE - $27.96
And in Germany :
Wii U - 12.95
PS4 - $63.35
X ONE - $81.55
I find it funny, Nintendo is always being lambasted by environmental groups for not cooperating with their inquiries (which they are under no obligation to do), and yet, their environmental perfomance is far and away ahead of their competitors.
