Twice the height of the Empire State - EnviroMission plans massive solar tower for Arizona

Twice the height of the Empire State - EnviroMission plans massive solar tower for Arizona: "An ambitious solar energy project on a massive scale is about to get underway in the Arizona desert. EnviroMission is undergoing land acquisition and site-specific engineering to build its first full-scale solar tower - and when we say full-scale, we mean it! The mammoth 800-plus meter (2625 ft) tall tower will instantly become one of the world's tallest buildings."