India’s Ministry of New and Renewable Energy Sources (MNRE) is working on a master plan for establishing 60 “solar cities.” The MNRE says the plan will help reduce fossil fuel use by 10% by 2018. The objective of the program is to promote renewable energy in urban areas and enable local governments to use public-private partnerships to meet sustainable energy challenges at the municipal level, explains Arun Tripathi, MNRE director. “This is the first time a plan is being structured in a consolidated manner,” Tripathi says. Currently, 45 cities have been given the green light, and a consultant will be
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.