Denver International Airport (DEN) began construction on two new solar projects on airport property that will generate roughly 36 million kilowatt-hours of electricity each year, the equivalent energy usage of 6,000 typical Denver homes.Construction on the first solar array is already underway, with the projected expected to enter commercial operation in the first quarter of 2022. The second array will begin construction in the first quarter of 2022, reaching commercial operation in the third quarter of 2022. Phil Washington, CEO of DEN, noted that these projects fall under the airport's Vision 100 plan, which will help prepare the airport for 100 million passengers over the next 10 years.Denver International Airport is the third-busiest airport in the United States and one of the top ten busiest airports in the world."DEN has long been at the forefront of developing on-airport solar projects, having installed its first solar array in 2008," said Senior Vice President of Sustainability Scott Morrissey. "After the two new systems are energized, the airport will have solar panels spread across over 140 acres of land, making DEN one of the largest hosts of solar energy at any airport in the world. Additionally, DEN will increase its total solar energy generation capacity to 34 megawatts and will more than double the amount of solar energy hosted at DEN."