One challenge with wind power is how to maintain, or access, the turbines generating the electricity. The truth is that a lot of wind farms are located in wind-swept, hard–to–reach regions, making routine maintenance anything but. In China, which, according to the Global Wind Energy Council is the world’s largest producer of wind power, ExxonMobil and its local partners have developed a unique solution to this issue. Their remedy is a fleet of customized trucks that can haul everything needed to maintain turbines, many of which are located in the far reaches of the country. The trucks travel thousands of kilometers every year to supply China’s wind farms with the lube and grease they need to keep spinning.