[Para Completion] The following question has a paragraph from which the last sentence has been deleted. From the given options, choose the one that completes the paragraph in the most appropriate way. The existing grid also makes it difficult to predict the energy output from wind projects. At a single wind farm, energy production can range from zero to 100 percent. But with hundreds of wind farms networked together, production would almost never be zero. Utility planners could in fact derive a minimum likely capacity, an important statistic as more resources are poured into building wind farms.However, wind energy works only if it is widely shared. Already, there are times in the Pacific Northwest and the Midwest when wind production exceeds demand in the regions to which it can be easily sent. __________ 1. There is some hope for individual projects, although experts say they are the equivalent of building Interstate highways one route at a time. 2. Electricity can be made from natural gas almost anywhere, because a superb gas network. 3. In some places, however, renewables could cut electricity costs by allowing the replacement of high-cost generators with lower-cost ones. 4. Electricity is a supply chain with a time lag even shorter than the one for sushi. 5. The technology, the engineering skill and even the money are all available, experts say, but the ability to reach agreement on such a grid is not.
Posted on: Sun, 14 Jul 2013 09:49:00 +0000
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