It’s no secret that the U.S. power grid needs some work. According to the U.S. Department of Energy (DOE), nearly 70% of the nation’s grid is more than 25 years old. The DOE says the U.S. needs to expand electricity transmission systems by 60% by 2030—and may need to triple current capacity by 2050—to accommodate the country’s growing renewable energy sector and meet increasing power demand for electric vehicles (EVs) and electric home heating.