首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
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’
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’
admin
2019-04-27
31
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.
What is the problem with renewable energy in nature?
选项
A、The market is designed in different times.
B、Monopolies still supply most of green power.
C、Market forces couldn’t determine where to invest.
D、Companies in this field can’t remain profitable.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/KkZ7777K
0
大学英语四级
相关试题推荐
A、Itmeansteachersshouldgivedifficultassignmentsandgivelotsofhomework.B、Itmeansteacherscandevelopthestudentsmo
Directions:Nowadaysthereisaheateddebateaboutwhetherweshoulddevelophighwaysorpublictransportation.Theopinionsva
A、Becausetheywanttopreservethenaturalbeautyofthecampus.B、Becausetheywanttoprotectthestudents’rightforliving
A、Theyliveintwentyrainforests.B、Theyliveinseveralhundreddifferentvarietiesoftrees.C、Theyliveinaforty-degreeba
AnewreportreleasedbytheAmericanFederationofTeachers(AFT)remindsusofatopiceducationwritersalmostneveraddress—
A、Torevealculturaldifferencesandsimilarities.B、Toexposecasesofchildabuseandpunishment.C、Toanalyzechildbehavior
AnimalsontheMoveA)Itlookedlikeascenefrom"Jaws"butwithoutthedramaticmusic.Ahugesharkwaslowlyswimmingthro
ThingsYouCan’tSayinCanadaA)Attackingoursacredcows(thingsorpeoplethatcannotbecriticized)mayturnyouintoo
A、Adjustinghisbiologicalclock.B、Knowingthedirectionofajet.C、Realizingthetimedifferenceduringflight.D、Gettinguse
A、Britain.B、German.C、France.D、Norway.A
随机试题
设立外资企业的申请经审批机关批准后,外国投资者应当在收到批准证书之日起()天内向工商行政管理机关申请登记,领取营业执照。
教育如何适应人的发展规律?
孕妇由于妊娠期高血压疾病应用硫酸镁治疗,在治疗过程中出现膝反射消失,呼吸浅而慢,每分钟10次,此患者除立即停药外应给予
投资利息与会计上的财务费用不同,它包括()的利息,无论它们的来源是借贷资金还是自有资金,都应计算利息。
某企业供配电系统如下图所示,总降压变电所电源引自地区变电所,请回答下列问题:当电动机端电压偏差为一8%时,计算电动机启动转矩与额定启动转矩相比的百分数降低了多少?()
根据货物移动方向,国际贸易可分为()
由立法机关或其他任免机关经过考察而直接任命产生行政领导者的制度是()。
下列( )情形属于透支交易。
在会议开始前,市场部助理小王希望在大屏幕投影上向与会者自动播放本次会议所传递的办公理念,按照如下要求完成该演示文稿的制作:将文档中的所有中文文字字体由“宋体”替换为“微软雅黑”。
Anewstudyfoundthatinner-citykidslivinginneighborhoodswithmoregreenspacegainedabout13%lessweightoveratwo-yea
最新回复
(
0
)