India’s goal to achieve 20,000 MW of solar power by 2022 is proving to be a challenge as the industry awaits tweaks to a draft policy that will determine the tariff and allow the country to import photovoltaic cells—a technology that is not established in the country. But the road bumps haven’t stopped the development of some solar facilities in the country. The grid is underpowered, but PV sector is gaining turf. While the country currently has almost no grid-connected solar power, a recent McKinsey& Co. survey ranks India as the most attractive destination in the world for solar PV
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.