2. 职称英语
  3. Almost 150 years after photovoltaic (光电的) cells and wind turbines (涡轮机) were

Almost 150 years after photovoltaic (光电的) cells and wind turbines (涡轮机) were

游客2023-06-18  12
问题     Almost 150 years after photovoltaic (光电的) cells and wind turbines (涡轮机) were invented, they still generate only 7% of the world’s electricity. Yet something remarkable is happening. From being secondary to the energy system just over a decade ago, they are now growing faster than any other energy source and their falling costs are making them competitive with fossil fuels. BP, an oil firm, expects renewables to account for half of the growth in global energy supply over the next 20 years. It is no longer far-fetched to think that the world is entering an era of clean, unlimited and cheap power.
    There is a problem, though. To get from here to there requires huge amounts of investment over the next few decades. Normally investors like putting their money into electricity because it offers reliable returns. Yet green energy has a dirty secret. The more it is used, the more it lowers the price of power from any source. That makes it hard to manage the transition to a carbon-free future, during which many generating technologies, clean and dirty, need to remain profitable if the lights are to stay on. Unless the market is fixed, subsidies to the industry will only grow.
    Policymakers are already seeing this inconvenient truth as a reason to put the brakes on renewable energy. In parts of Europe, investment in renewables is slowing as subsidies are cut back. However, the solution is not less wind and solar. It is to rethink how the world prices clean energy in order to make better use of it.
    At its heart, the problem is that government-supported renewable energy has been imposed on a market designed in a different era. For much of the 20th century, electricity was made and moved by vertically integrated, state-controlled monopolies. From the 1980s onwards, many of these were broken up, privatized and liberalized, so that market forces could determine where best to invest. Today only about 6% of electricity users get their power from monopolies. Yet everywhere the pressure to decarbonize power supply has brought the state creeping back into markets. This is disruptive for three reasons. The first is the subsidy system itself. The other two are inherent to the nature of wind and solar: their intermittency and their very low running costs. All three help explain why power prices are low and public subsidies are addictive. [br] Why are policymakers unwilling to develop renewable energy?
选项 A、It needs a large amount of subsidies from the government.
B、It is inconvenient to manufacture wind turbines and solar cells.
C、Green energy will bring negative influence on coal power plants.
D、The government needs to subsidize many other public services.
答案 A
解析 推理判断题。由题干中的policymakers和renewable energy定位至第三段第一句。第三段介绍，在一些地区，随着政府补贴的减少，对可再生能源的投资也减缓了。第一句指出，政策制定者已经看到这个棘手的事实，并以此作为理由来阻碍可再生能源。其中，this inconvenient truth指的是第二段最后一句——除非     市场被固定化，对这个行业的补贴只会不断增加。由此可知，政策制定者因为补贴过高而不愿意发展可再生能源，故答案为A)。
转载请注明原文地址:https://tihaiku.com/zcyy/2762711.html
相关试题推荐
随机试题
最新回复(0)