KHADODA, India — Solar power is a clean energy source. But in this arid part of northwest India it can also be a dusty one. Lanterns Are a Ready Example of Solar Power’s Potential (December 29, 2011) Every five days or so, in a marriage of low and high tech, field hands with long-handled dust mops wipe down each of the 36,000 solar panels at a 63-acre installation operated by Azure Power. The site is one of the biggest examples of India’s ambitious plan to use solar energy to help modernize its notoriously underpowered national electricity grid, and reduce its dependence on coal-fired power plants. Azure Power has a contract to provide solar-generated electricity to a state-government electric utility. Inderpreet Wadhwa, Azure’s chief executive, predicted that within a few years solar power would be competitive in price with India’s conventionally generated electricity. “The efficiency of solar technology will continue to increase, and with the increasing demand in solar energy...
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