Dell has just finished construction of a solar-powered parking lot called a "Solar Grove" for their corporate headquarters in Round Rock, Texas. Coulomb Technologies, battery maker Axion Power International, and aluminium structure builder worked together to produce the CleanCharge stations located in the parking lot. This parking lot was built to provide power for future plug-in vehicles, and it also produces carbon-free energy for the building. The Solar Grove is made up of 516 individual solar panels which will cover about 56 cars. These panels are capable of producing 131,00 kWh a year.