A recent milestone is the US passing the 20,000 MW wind energy capacity level. More amusing is the variations of measurements. At the moment, Germany is world leader by one metric (generating capacity), while the US is the leader by another metric (annual electricity generated). (The US locations have better winds.) This could shift again if re-rated to electricity delivered for use. The recent large US gains have been from locations like Texas, where the regional electrical transmission facilities are especially bad. Unlike some other parts of the country, there has been little improvement for the Texas large capacity long distance electricity transport. So the transmission losses are much higher than they should be.