首页
登录
职称英语
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
2024-01-27
33
管理
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] What is the dirty secret of green energy?
选项
A、Its equipment requires frequent maintenance.
B、It offers little reliable returns to the investors.
C、It costs a lot to transport the electricity it produces.
D、Its use will reduce the price of power.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3399731.html
相关试题推荐
[originaltext]AlmostallstatesinAmericahaveastatefair.Theylastforone
[originaltext]Kenyaisthethird-largestteaproducerintheworld.Almostall
[originaltext]Kenyaisthethird-largestteaproducerintheworld.Almostall
[originaltext]Almosteveryonesuffersfromaheadacheoccasionally.Butsom
[originaltext]Almosteveryonesuffersfromaheadacheoccasionally.Butsom
[originaltext]Almosttwo-thirdsofchildrenwanttheirparentstospendmore
[originaltext]Almosttwo-thirdsofchildrenwanttheirparentstospendmore
[originaltext]Almosttwo-thirdsofchildrenwanttheirparentstospendmore
[originaltext]Almosttwo-thirdsofchildrenwanttheirparentstospendmore
[originaltext]Almosttwo-thirdsofchildrenwanttheirparentstospendmore
随机试题
Aresearcherdiscoveredthatpeoplewhohavelowlevelsofimmune-systemactivit
Tonyistalkingaboutthefriendsandthefood______interesthim.A、whichB、whoC
[originaltext]M:Hey,Linda!Longtimenosee!Iheardthatyou’regoingonab
给定资料: 2015年12月6日,一则名为《S市城管也太欺负外地人了》的帖
计算个人可支配收入,需要在个人收入基础上减除()A.政府向居民支付的利息
女性患者,29岁,妊娠5个月,既往有糖尿病病史2年,此次检测空腹血糖8.9mmo
下列可作为抗真菌药物使用的是A.特比萘芬 B.磺胺嘧啶 C.氧氟沙星 D.
?关于个案工作中任务中心模式的说法正确的是()。A.任务中心模式的焦点是为服务对
依据睡眠状态合理用药早醒者可选用()A.氟西泮 B.氯美扎酮 C.谷维素
商业银行的最基本的职能是()。A.货币制造 B.价值创造 C.信用中介
最新回复
(
0
)