• <tr id="yyy80"></tr>
  • <sup id="yyy80"></sup>
  • <tfoot id="yyy80"><noscript id="yyy80"></noscript></tfoot>
  • 99热精品在线国产_美女午夜性视频免费_国产精品国产高清国产av_av欧美777_自拍偷自拍亚洲精品老妇_亚洲熟女精品中文字幕_www日本黄色视频网_国产精品野战在线观看 ?

    Thoughts on Green Energy Industry Growth in Developing Countries

    2016-12-20 11:54:50YuanJian
    China International Studies 2016年6期

    Yuan Jian

    Thoughts on Green Energy Industry Growth in Developing Countries

    Yuan Jian

    For a considerably long period of time, renewable energy power was considered a luxury that only rich countries could afford. This view was not entirely unfounded. The development of solar energy and wind energy in Germany and other Western European countries lead the world, thanks to policy instruments such as generous subsidies for costs and price. Developing countries generally lacked such policy resources.

    Just a few years ago, few people would have expected the renewable energy industry to rise so rapidly throughout the developing world, not only outpacing developed countries in terms of growth, but also making breakthroughs in terms of volume. In 2015, the investment in wind energy and solar power projects in developing countries exceeded the scale of that in developed countries for the first time. A couple of years ago, few would have predicted that “to see how bright the future of solar energy is, look to the developing world.”1“The New Sunbathers,” The Economist, April 16, 2016.

    The unexpected development of renewable energy in developing countries prompted people to rethink this question: what is the main condition for the development of the renewable energy industry? Based on a summary of relevant practices and experiences in developed countries, existing projections and assessments emphasize the role of financial, technical and policy incentives. The achievements of developing countries show that the power market demands, resource richness, as well as the extent of policy resistance, also affect the development of the renewable energy industry to alarge extent. In other words, in the development of renewable energy sources, developing countries have their own conditions, or relative advantages.

    Growth Momentum

    Beginning in 2011, the growth in global solar power capacity began to significantly speed up. In the decade before, the incremental global capacity totaled 39 GW (39,000 MW), up from 1 GW in 2000 to 40 GW in 2010. But in 2011 alone, the newly added capacity reached 30 GW. Since then, the average annual capacity growth has reached or exceeded 30GW.2European Phtovoltaic Industry Association, “Global Market Outlook for Photovoltaics 2013-2017,”May 2013, http://www.epia.org/fileadmin/user_upload/Publications/GMO_2013_-_final_PDF.pdf.It is generally recognized that this substantial increase has direct links with the rapid development of solar power in developing countries, especially China and India.3“China’s 12GW Solar Market Outstripped All Expectation in 2013,” Bloomberg New Energy Finance, January 23, 2014, http://about.bnet.com/files/2014/01/BNEF_PR_2014-01-23_China_Investment-final.pdf.In Latin America, Chile, Mexico and Brazil are among the countries that have witnessed the fastest growth worldwide in investment of renewable energy generation since 2013.

    By 2014, developing countries accounted for nearly half of the total investment in global renewable energy. “The days when renewables were largely a sop to rich-world consumers’ consciences are clearly over.”4“Not a Toy,” The Economist, April 11, 2015, p.56.In 2015, the growth rate of the world’s renewable energy reached a new high, with solar power capacity growing by 26 percent and wind power by 17 percent.5“Follow the Sun,” The Economist, April 16, 2016, data quoted from an annual report of International Renewable Energy Agency, April 2016.The investment in new solar power generation projects exceeds the total investment in coal and natural gas power projects for the first time. Behind this record-breaking growth is the renewable energy industry “taking a big step forward in the developing world.”

    In 2015, developing countries attracted more investment in solar and wind power projects than developed countries for the first time.6“The New Sunbathers,” The Economist, April 16, 2016.China’sinstalled solar power capacity overtook that in Germany, to rank first in the world. The Indian government of Narendra Modi has proposed an ambitious solar power development plan to increase its solar power generation capacity to 100 GW by 2022, 20 times the existing installed capacity.7“Greenery by Stealth,” The Economist, October 10, 2015, pp.14-15.

    Africa’s renewable energy industry started relatively late, but in recent years the momentum has been the strongest, one of the reasons being the wave of solar power project construction that has “swept across the African continent.”8“Follow the Sun.”According to statistics, since 1992, independent power companies have increased their investments in the continent’s power industry, with an average annual growth rate of up to 14 percent. Although most of the capital investment has gone to coal and natural gas to generate power, the proportion of renewable energy power generation investment is growing continuously. South Africa is one of the fastest growing African countries in renewable energy capacity. Over the past four years, related power capacity has increased by more than 4 GW, or 10 percent of the country’s total electricity supply.9“The Leapfrog Continent,” The Economist, June 18, 2015, pp.37-38.

    Concentrating solar power technology (CSP) is very popular in Africa. CSP uses mirrors to concentrate sunlight onto receivers that collect the solar energy and convert it to heat. With the completion of the one under construction in Morocco, which will be the largest of all, six of the world’s ten largest photo-thermal power stations will be in Africa. According to McKinsey & Company estimates, by 2040 the proportion of solar power in Africa’s total electricity supply will have increased to about 10 percent. If there are good management policies and enough investment funds are guaranteed, Africa will become one of the world’s leading photovoltaic power generation bases.10Ibid.

    Solar power’s growing momentum reflects the recent sharp decline in the cost of solar power generation. Since 2010, the price of photovoltaicpanels has fallen by nearly 80 percent, largely thanks to rapid expansion of China’s manufacturing capacity.11Michael Liebreich, “Global Trends in Clean Energy Investment,” Bloomberg New Energy Finance, April 17, 2013, http://about.bnet.com/presentations/global-trends-in-clean-energy-investment; “Follow the Sun,” The Economist, April 16, 2016.The decline in PV power costs is also a result of the improvement in solar panel efficiency: the conversion of light energy into electrical energy has increased by about 20 percent, thanks to the use of new materials. Because of the decline in PV power costs, the levelized cost12Levelized cost is the investment cost divided by total power capacity in the expected validity period of the power station.point is approaching, and in some cases will be even lower than the cost of natural gas electricity and coal electricity. In some markets, PV power is already competitive in retail prices.13“Follow the Sun.”

    Obviously, seizing the opportunities brought about by cost reductions is an important reason for the success of many developing countries. However, the cost factor does not fully explain the rapid rise of the PV power industry in developing countries, because in recent years, the price of coal and other fossil fuels has also significantly decreased. Moreover, despite the cost reductions, in some of the first European countries to develop solar power, the investment is facing stagnation. This means, in addition to the costs, there are other factors at play.

    Development Needs

    Developed countries usually support the renewable energy industry under the “climate policy” framework. Admittedly, the real driving force is often multiple: in addition to the pursuit of emission reduction targets, it also reflects the considerations of energy security, scientific and technological innovation and nurturing new economic growth points. The priority of the objectives varies from country to country.

    In the developing world, these goals are highly valued. Overall, however, the policy drivers are mainly derived from basic development needs:addressing the growth bottleneck caused by power shortages; providing power to rural populations to improve their basic living conditions and economic opportunities.

    Huge power supply shortage

    At present, there are 1.1 billion people in the world who do not have access to electricity, and another nearly 1 billion people who do not have a stable power supply. About two-thirds of them live in Sub-Saharan Africa, with the majority of the remainder in India and other South Asian countries. Over the past 10 years, with the economic growth in these countries significantly speeding up, the power supply gap is becoming more prominent and it is one of the main bottlenecks hindering the economic growth of these countries. Since the beginning of the 1990s, new power generation capacity in Africa and South Asia has increased significantly, but it can barely keep pace with population growth, let alone economic development.14Morgan D. Bazilian, “Power to the Poor: Provide Energies to Fight Poverty,” Foreign Affairs, March/ April, 2015, pp. 133-138; “Power to the Powerless,” The Economist, February 27, 2016.

    Africa is the continent with the greatest power shortage in the world. It has been estimated that the power shortage drags down the annual growth rate of the African economy by about 4 percentage points. Almost all sectors are affected, not only energy-intensive industries, but also emerging industries related to network technology services, and even the agro-processing industry. In Tanzania, half of the enterprises list regular power outages as the primary cause of operating difficulties.15“Power to the Powerless.”Power supply system is relatively developed in South Africa, but the power gap is also very obvious. For example, the country’s economic growth in the first quarter of 2015 was struck in stagnation, and lack of electricity supply was listed as the primary reason.16“The Leapfrog Continent.”

    According to statistics, of the 600 million people in Africa who have no access to power, many rely on kerosene and disposable batteries for cookingand lighting, with energy consumption costs accounting for 16 percent of their income. If the cost is converted into unit price, it is up to US$10/kWh, dozens of times higher than in developed countries. African companies, for the lack of power grid coverage or due to constant power outages, usually purchase diesel engine power generation facilities. The electricity costs are at least $0.5/kWh while in Europe the average retail price is $0.26/kWh and $0.12/kWh in the United States.17Dickon Pinner and Matt Rogers, “Solar Power Comes of Age,” Foreign Affairs, March/April, 2015, pp. 111-118.

    Although India’s power generation capacity is growing rapidly, its cities are still generally short of electricity, and there are frequent power cuts; 60 percent of the enterprises need to rely on selfpurchased diesel generators. In addition, there are 100,000 villages without electricity.18“Catching up with China,” The Economist, October 10, 2015, pp.25-27.

    New method to solve power shortages

    In recent years, developing countries have generally put the issue of addressing electricity shortfalls to the forefront of their development agenda. For example, the primary objective of India’s development plan is to increase its electricity generating capacity, the most direct reason for which is that every year 10-12 million Indian youths enter the job market, and the lack of electricity corresponds to a lack of job opportunities created by companies.19Ibid.In addition, in many countries in South Asia and Africa, electricity is seen as the key to improving the quality of life and income prospects for the rural population. Having access to the use of electricity is related to many issues from farmland irrigation to whether they have access to the most basicmodern medical services and assistance.

    In poor developing countries, the use of renewable energy sources, particularly solar power, as a new way to deal with electricity shortages and lack of electricity is, in many cases, more practical and effective than traditional solutions.

    First of all, the construction of new coal-fired power plants involves high fixed asset investment and a long construction time so private capital is mostly reluctant to get involved, while government investment capacity is often constrained. According to the estimates of Africa Progress Panel, to solve the power shortage in Africa, investment of $55 billion is needed each year. The existing scale of investment is only $8 billion. Many African coal-fired power projects have not been completed and put into production after decades of planning.20“The Leapfrog Continent,” The Economist, June 18, 2015, pp.37-38.

    Second, in developing countries with power shortages, the existing power grid and other power infrastructure are old and inefficient, restricting the growth in power supply. For example, in addition to having limited coverage, the power capacity of India’s existing power grid system is also constrained by transmission and distribution facilities. In 2012, a large-scale grid paralysis affected more than 600 million people. The transformation and upgrading of the existing power grid system will also be time consuming.21“Catching up with China.”

    In contrast, the fixed asset investment required for large-scale solar power stations may not be higher than the coal-fired projects, especially in places that enjoy lots of sunlight, and the construction will be much faster. At present, the price of solar electricity may be less competitive than coal and natural gas power, but taking into account the fact that in many parts of Africa and India, businesses and families have no access to electricity,or have to buy diesel engines to generate power, photovoltaic power has a noticeable cost advantage. Moreover, if priority is given to developing smallscale distributed power supply systems, a lot of expenses can be avoided in the construction of transmission facilities.

    An effective rural power supply

    In Africa and South Asia, 85 percent of those who do not have access to electricity live in rural areas which are far from the existing power supply infrastructure. At least in the short term, it is difficult to expand the coverage of the main power grid to solve their power supply problems. In addition to the difficulty of raising power production capacity, the cost of constructing transmission lines and the other infrastructure involved would be very high. It is estimated that the per capita cost of connecting vast rural areas of Africa without electricity to power grids could be as high as several thousands of US dollars on average.22“The Leapfrog Continent.”

    In contrast, the construction of distributed power generation systems, such as the installation of rooftop photovoltaic panels for rural households, or the erection of a wind turbine for a village, is more efficient, flexible and costs less. The threshold of investment in installations of PV power generation facilities is particularly flexible: simple micro-generators can be first installed, and then connected to small grids to upgrade the power supply capacity to power larger communities. Ultimately, the regional power generation system may also be connected to the main grid. Unlike the fragility and inefficiency of the existing grid system, a distributed power supply system would be stable and reliable.

    At present, this power supply method has become popular in many developing countries. For example, India has a large number of small companies helping rural residents install rooftop photovoltaic power generation devices. The low-power dissipation power generation facilities can be installed in just one or two days, with relatively low initial installationand maintenance costs. Although the facilities are simple, they can meet the basic needs of the villagers, powering lighting, TVs and charging cellphones. In India, millions of rural people in areas not covered by power grids are using electricity for the first time by installing small-scale solar or wind power generation facilities.23“Catching up with China.”In Bangladesh, the market for micro-PV power generation devices is also large: annual sales reached more than 3 million units in 2014, and this figure is expected to double between 2015 and 2017.24“Not a Toy.”

    Most of the power companies in Africa are also involved in the business of small-scale photovoltaic power supply. For example, in countries, such as Kenya, Uganda, Tanzania and Rwanda, foreign-funded enterprises such as Kopa and Off-Grid Electric provide rooftop photovoltaic power generation facilities and small grid power supply systems. Some companies have a rather low starting point, selling the most basic power generation and electricity tools: a photovoltaic panel, a battery, a few LED bulbs, a cell phone charger and an electric radio with prices ranging from $150 to $500 that can be paid in installments. Such “packages,” accommodating the spending power of local residents, are very popular.25“Power to the Poor: Provide Energies to Fight Poverty.”

    Technically, to further develop the distributed power system, the power reserve capacity needs to be strengthened to maintain a stable supply of electricity. Historically, the cost of power storage technology has been high and has been a major obstacle to the expansion of the independent grid system.26“Banishing the Clouds,” The Economist, June 13, 2015, pp.59-60.This situation has begun to change in recent years. During the period 2010-15, the cost of battery storage has decreased by 50 percent. It is estimated that in 5 to 10 years, the cost of electricity storage will continue to decline. By 2020, counted in unit storage capacity, the battery storage cost is expected to fall by 40-60 percent from 2015’s level.27Craig R. Home, “Energy Storage 4.0: The Plug-and-Play Grid Is Not That Far Off,” Greentech Media, May 17, 2016, http://www.greentechmdia.com/articles/read/The-Plug-and-Play-Grid-Is-Not-That-Far-Off.This decline will undoubtedly increase the attractiveness of distributed powergeneration systems. New cost-effective technology can not only improve the storage capacity of micro-grids and community power grids, but also provide conditions for the integration and management of distributed power generation system networks. By integrating small power generation capacity and transmitting surplus electricity, the adequacy and stability of power supply can be secured.28Center for American Progress, “Girding the U.S. Electric Grid with Community Energy Storage,” July 13, 2016, https://cdn.americanprogress.org/wp-content/uploads/2016/07/13090123/1CommunityStorageFor Resilience-brief.pdf.

    In recent years, in Germany and other Western European countries, the growth momentum of the renewable energy industry has slowed, partly as a result of weak domestic demand for electricity. In many developing countries, to achieve comprehensive electrification, there is still a long way to go. They need to seize the opportunities brought by new energy technologies and power generation cost reductions to meet their basic development needs. Compared with other considerations, development need-driven policies are perhaps stronger and more stable.

    Resource Factors

    In developed countries, government funding is still an important precondition for the rise of the renewable energy industry. Large-scale renewable energy projects generally enjoy tax incentives, and even direct subsidies. The purchase and installation of rooftop PV power facilities are also subject to certain tax breaks and loan facilitation. In addition, developed capital markets can provide financing for new electricity projects.

    In most developing countries, the capacity of governments to provide funding and subsidies is limited, and the size of domestic capital markets and their ability to provide financing cannot be compared with those of the developed countries. The attractiveness of solar power projects in developing countries for investments lies largely in these countries’abundant sunlight.

    Attractiveness of sunlight resources for international investors

    Countries that lack electricity in Africa and South Asia are mostly rich in sunlight resources—the average number of sunny days, daily sunlight duration and solar radiation intensity significantly exceed the global average. For investors, in addition to technology costs and market demand, sunlight resources to a large extent determine the prospects for the profitability of a solar power project, including the potential of economies of scale.

    By virtue of their advantages in sunlight resources, many developing countries are able to attract a considerable amount of international investment without resorting to government subsidies. For example, India’s photovoltaic power projects have attracted the highest amount of international investment, which has a lot to do with it having plenty of areas that are rich in sunlight and its large amount of cheap flat land, suitable for the construction of large-scale photovoltaic power stations. At present, investment in photovoltaic power projects in developing countries is not only from new energy companies in developed countries, but also from developing countries. For example, Morocco has built the world’s largest photo-thermal power project; the investor of the first phase of the project was the Saudi Arabian company Acwa Power.29“Follow the Sun.”

    Converting Resources Superiority into Price Competitiveness

    To a large extent the competitiveness of new energy, especially when compared with energy from coal and other fossil fuels, depends on its cost, or rather price competitiveness. At present, in some developing countries with rich sunlight resources, the decline in photovoltaic power prices has been among the fastest globally. According to some research institutions, even in the context of the decline in oil and gas prices, the power generation costs of solar power facilities with good sunlight conditions has been lower than that of burning oil and gas in terms of heat units.30“We Make Our Own,” The Economist, January 17, 2015.

    In South Africa, the unit price of electricity from renewable sources has fallen by nearly 70 percent in four years. In a recent auction of electricity, the wholesale price of solar electricity and wind power was almost the same as that for other energy sources.31“Power to the Powerless.”For instance, the bidding price for solar power from some states in central and southern India approached or was even lower than the price of coal-generated power. For example, the cost of electricity from an imported coal-fired power plant is around 6 rupees/ kWh. In the southern Indian state of Karnataka, the new solar power station offers an electricity price of 5.5 rupees/ kWh. Thanks to its abundant sunlight resources, India is considered one of the most likely countries to reduce the price of solar electricity. It is expected that the price of electricity generated from India’s solar power projects will be lower than that of coal in 2020.32“Catching up with China”; “Follow the Sun.”

    In developing countries, bidding for contracts of solar power projects tends to be a “reverse auction” approach. That is to say, the winner will always be the company which promises to offer the lowest wholesale price of electricity after the project is completed. In recent years, the prices offered by investors have kept hitting new record lows. In November 2014, the bidding price of a solar power station project in the United Arab Emirates hit a low price of $60/MWh for the first time. In February 2016, a Peruvian project reported an even lower price of $48/MWh. One month later, the price of a Mexican project was $40/MWh, a record low bidding price for a project that would enjoy no government subsidies.33“Follow the Sun.”

    In the long run, the possibility of attracting investment by resource advantages and securing cheap power will make more developing countriesthink about how to turn their rich natural resources into an effective way to solve their power shortage problems.

    Policy Environment

    In developed countries, the growth rate of the new energy industry is often impacted by the unstable supportive policies, which are often caused by conflicts of interests which are hard to be reconciled and the huge influence from the opposition on policymaking. A knowledge of dilemmas the developed countries are faced with will give us a better understanding of the reason why a simpler policy environment, where there is little opposition and conflicts of interest, should be considered a favorable condition for developing countries seeking to develop renewable energy sources.

    Conflicts of Interests behind Controversial Policies

    Most of the electricity market in Western countries is basically saturated, or there is a relatively limited additional demand. That means power suppliers who are already in the market are sensitive to any possible competition. Moreover, the traditional power plants, which rely heavily on economies of scale, have a high cost in terms of fixed assets and consequently a much lower marginal cost of power generation after a plant has been constructed. Therefore, a long-term stable market share is one of the most important conditions for investors to make a profitable return on their investment. Public utility companies, which are the biggest buyers of wholesale electricity in countries such as the United States, basically run their business with monopoly in a strictly divided territory and have justified reasons to hope the status quo will not be impacted.34Varun Sivaram and Teryn Norris, “The Clean Energy Revolution: Fighting Climate Change with Innovation,” Foreign Affairs, May/June 2016, pp. 147-156.In addition, after years of development, the power industry in the developed countries has a basically mixed commercial operation mode. New entrants and new power supplymodes will not only impact the original market structure, but also force the existing system to change its rules. That is why insiders in the power industry believe that the effect distributed generation will have on the whole industry “is what the internet did to newspapers.”35“Let the Sun Shine,” The Economist, March 8, 2014.Since large coal power corporations usually have great political influence, it is very likely that those conflicts of interests will become resistance to policy.

    Some examples of controversial policies are as the following:

    Feed-in tariff policy of Germany. The German government supports the development of renewable energy mainly by a “feed-in tariff” policy. The government gives priority to wind and solar power, which enjoy a high electricity price set by the government for a time span of 20 years. The tariff subsidy here mainly comes from an additional charge imposed on consumers via their electricity bills. The stimulus of the policy is clear: Renewable energy accounted for 30 percent (the largest globally) of the total power generation in Germany in 2015, much higher than the 3.6 percent in 1990.36“It’s not Easy Being Green,” The Economist, August 13, 2016; “When the Wind Blows,” The Economist, November 28, 2015, pp. 7-8.

    That growth has obviously impacted on the traditional power companies. To start with, the massive entrance of new energy power into the market squeezes the profit margins of traditional power plants. In addition, due to government subsidies on investment and capacity expansion, the renewable energy power generation projects enjoy an extremely low marginal cost, and so can afford a zero electricity price at times in the wholesale market. If that becomes the norm, the decline of settlement prices in the market could threaten the very survival of traditional power plants.37“When the Wind Blows.”

    Policymakers therefore are greatly pressured to make some adjustments. The German government started to reduce subsidies for photovoltaic power projects in 2011. In July 2016, the German parliament decided that from 2017 the government would provide price protection only to investors who offer the lowest price in biddings, and stop providing universal “feed-intariff” for all investors of wind and solar power projects.38Ibid.

    Net energy metering policy in some US states. 43 states in the United States have introduced a “net energy metering” (NEM) policy. The basic content of this policy is to allow the owners of distributed power generation facilities to integrate their surplus electricity into the power grid and ask the utility companies, the operators of the power grid, to provide some compensation based on their retail prices. In most cases, the compensation is made through providing credit lines to these owners or reducing their electricity charge.39Luke H. Bassett, “Net Energy Metering: Growth and Accountability in the Distributed Solar Market,” July 14, 2016, https://cdn.americanprogress.org/wp-content/uploads/2016/07/14133555/ NetEnergyMetering1.pdf.

    While the policy has played a key role in stimulating the rapid development of the rooftop PV system in the United States, it has also aroused strong dissatisfaction from the existing power suppliers. For example, utility companies who operate power grids argue that the entry of PV power increases market supply and threatens their original pricing power and return on investment; in addition, the new power inputs, which have increased the burden on the grid, are compensated at retail prices, which means new users do not have to pay for the management and maintenance of the grid.40Solar Energy Industries Association, “U.S. Solar Market Insight,” June 9, 2016, http://www.seia.org/ research-resources/us-solar-market-insight.

    Due to pressures from the interest groups in the coal power industry, a few states in the United States began to charge a certain amount of fees to PV power entrants in 2013. In 2015, more states started to review their NEM-related regulations, and made some adjustments to meet the demands of critics to varying degrees. These adjustments have included reducing the reimbursement price for PV power entrants; lowering subsidies for the installation of rooftop PV facilities, or raising the standard for subsidies; and limiting the size of the rooftop power facilities, or limiting the amount of PV power that can be integrated into the grid.41Nichola Groom, “Future of U.S. Solar Threatened in Nationwide Fight over Incentives,” Reuters, March 4, 2016.Nevada is considered oneof the states to have made the largest policy adjustment, one which has had an obvious impact: a lot of solar energy companies have chosen to cut their business in the state.42Daniel Rothberg, “Regulators Vote against Grandfather Clause for Existing Solar Customers,”Las Vegas Sun, February 12, 2016, http://lasvegassun.com/news/2016/feb/12/regulators-vote-againstgrandfather-clause-for-exi.

    Clean Power Plan of the United States. The US Environmental Protection Agency (EPA) released the final version of the Clean Power Plan (CPP) on August 3, 2015. It is the US regulation to limit carbon emissions of the power industry, and is one of the pillars of the Obama administration’s climate policy and the main greenhouse gas emissions reduction commitments the United States has made under the framework of the Paris Agreement. The CPP provides significant incentives for the development of renewable energy: one of the most effective ways for US states to meet the EPA’s new emissions standards is to increase the share of carbon-free electricity in total electricity generation. The US Energy Information Administration (EIA) has predicted if the CPP is implemented, the share of wind and solar power in the whole power capacity of the United States will grow to 18.7 percent in 2030.43U.S. Energy Information Administration, “Annual Energy Outlook 2016,” http://www.eia.gov/ forecasts/aeo/er/pdf/0383er(2016).pdf.

    From the beginning of the introduction of the draft, the CPP has been criticized by the coal power industry, which says the overly strict restrictions on the emissions of existing power plants and the short time limit will result in the growth of costs being so fast that the companies cannot afford it. The EPA has also been accused of acting beyond its authority. In October 2015, some large companies in the coal and power industry and some industry associations, with the help of the attorney generals of 24 states including West Virginia, went to the Court of Appeals for the DC Circuit to accuse the EPA of acting beyond its authority in making the CPP. Statistics from the Center for American Progress show 43 of the largest 100 power companies inthe country have taken part in the lawsuit directly or indirectly.44Erin Auel, “Suing and Spewing: The Massive Pollution behind the Fight to Overturn the Clean Power Plan,” Center for American Progress, June 24, 2016, http://cdn.americanprogress.org/wp-content/ uploads/2016/06/22/22125138/SuingSpewing-brief.pdf.

    On February 9, 2016, the US Supreme Court ruled 5: 4 that all states suspend the implementation of CPP before a formal ruling by the Circuit Court, which has brought uncertainties to the prospects of CPP’s implementation.45“Supreme Emissions,” The Economist, February 13, 2016.

    Nature of Policy Challenges

    The above examples show that the efforts of the developed countries to support the renewable energy industry are challenged by a very complex policy environment. On the one hand, new energy power needs strong policy support to enter a market already occupied by fossil fuel electricity and compete with it on an equal footing. On the other hand, coal-fired power plants and other traditional power supply companies will continue to be the main power suppliers for a considerable period of time. Therefore, their need to early recover the investment on fixed assets and maintain a certain level of profitability should be taken into consideration.

    On the one hand, to develop a relatively independent and distributed power grid system that is mainly composed of renewable energy generation facilities is conducive to improving the safety and reliability of a country’s power supply system. On the other hand, the main power grid is still playing an irreplaceable role. Utilities companies who operate the power grid should make some profit so that they have the capability and incentive to invest in the maintenance and upgrading of the grid system.

    To a certain extent, the difficulty in balancing different needs can be considered a cost problem. The development of new forms of electricity requires major changes in the existing electricity supply system. Or, to put it another way, it will take time and money for a developed country to change the business model of its electricity sector.

    In most developing countries, the entry of new energy power into the market is unlikely to trigger very intense conflicts of interests. Thanks to a large supply gap in the electricity market, capacity growth will not result in a large-scale redistribution of market share for different players. The development of distributed power generation systems will also have a limited impact on the existing grid supply systems which have a limited coverage themselves. Therefore, the opposition to policies as a consequence of conflicts of interests has been relatively small. The relatively favorable policy environment has provided conditions for the renewable energy industry to develop steadily.

    Climate Concerns

    Green energy policies in the developing countries at present are mainly driven by economic development. However, climate concerns and environmental protection objectives keep driving policymaking. Many developing countries, while pursuing their growth targets, have significantly prioritized emissions reductions and other environmental goals on their policy agenda, and invested more in needed policy. For example, both China and India attach great importance to the fight against smog. In China, the relevant control objectives have become one of the major drivers for industrial restructuring and transformation of the energy structure.

    It is foreseeable that climate and environmental concerns will become increasingly important policy drivers in the future. Because relevant scientific studies and research are helping us have a better understanding of the relationship between economic growth and environmental protection. Here are a few examples:

    Smog more than a health threat

    Smog is mainly harming the developing countries, especially countries with rapid economic growth. For a long time, we have known smog is a major health threat. For example, smog-related air pollution is the main reason for the high incidence of respiratory diseases in developing countries.

    But according to the latest study from some international research institutions, smog has another consequence: It changes light intensity and rainfall in the area it covers. Because the airborne particulates, which are the composers of smog, can block the sunlight from reaching the ground, smog slows the evaporation of water and changes the pattern of water circulation, including the location, time and amount of rainfall. As a result, the area will see abnormal (reduced on a whole) rainfall.46Report of the National Center for Atmospheric Research, and Princeton University’s Geophysical Fluid Dynamics Laboratory, quoted from Veerabhadran Ramanathan, Jessica Seddon and David G. Victor, “The Next Front on Climate Change,” Foreign Affairs, March/April, 2016, pp. 135-142.

    In addition, studies show that aerosol particles which cause smog can interact with sunlight. Some of them scatter sunlight and others absorb sunlight. These will affect the warming rate of the atmospheric column and change the speed difference between the warming of the land and ocean, which is the original force for a monsoon. As a result, the rainfall associated with the monsoon and the flood season will be changed. Due to the fact that some aerosol particles can be blown into the atmosphere over thousands of kilometers away from the Indian Ocean, the influence range of monsoonal anomalies might be possibly enlarged. In South Asia and some parts of Southeast Asia, monsoon rainfall is generally declining, although rainstorms sometimes do occur. In some parts of southern Africa, drought haslasted for years because of changes in the monsoon paths and rainfall.47Ibid; “Monsooner or Later,” The Economist, June 25, 2016.

    Renewable energy, outpacing coal, becomes the largest source of newly-produced electricity for the first time in 2015, according to report of International Energy Agency (IEA).

    It is not difficult to imagine how much economic losses the rainfall changes will cause for the developing countries that have a large agricultural population and are heavily dependent on the agricultural economy. In South Asia and Africa, agricultural harvests in some areas rely almost entirely on the monsoon rainfall. In India, farmlands that rely on irrigation by monsoon rainwater account for nearly two-thirds of the total cultivated land, which involves more than 600 million farmers. In Africa, farmers suffer from a serious lack of means to deal with any reduction in the monsoon rainfall.48“Monsooner or Later.”

    Price of carbon emissions may be higher than expected

    Since climate change has raised public concerns, there is a growing awarenessof how dearly we will pay for a warming climate in terms of economic damages and social costs. Since the 1990s, the study on the problem has attracted a large number of scientific personnel and other research resources. DICE & Co in the United States is one of the most well-known research institutions. Its deductive model DICE, which is called “dynamic integrated climate-economic model,” was put into use in 1992. It estimated that the loss caused by carbon dioxide emissions stood at $2 per ton in terms of 2014 US dollar. Since then, the DICE model has been continually improved and refined, and the calculated emission cost also keeps increasing. The figure hit $20 per ton in 2014.49William D. Nordhaus, “Estimates of the Social Cost of Carbon: Concepts and results from the DICE-2013R Model and Alternative Approaches,” Journal of the Association of Environmental and Resource Economists, Vol.1, No.1 (2014), pp. 237-312.The figures calculated by other research institutions are generally much higher. Based on statistics from DICE and other well-known models (FUND and PAGE), the US government puts the cost at $40 per ton.50Nicholas Stern, “The Structure of Economic Modeling of the Potential Impact of Climate Change,”Journal of Economic Literature, Vol.51, No.3 (2013), pp.838-59.For some scholars, this figure is still far from reflecting the total social costs of carbon emissions, which they say stand at more than $100.51Van den Bergh and W.J.W Botzen, “A Lower Bound to the Social Costs of CO2Emissions,” Nature Climate Change, Vol.4, No.4 (2014), pp.243-258.

    While the figures are still controversial, the increasingly larger figure shows that a consensus that the real costs of carbon emissions may be higher than our understanding at present and that the credibility of the new estimates is significantly higher than that of original data. Because the calculations involved are extremely complex, it takes time to make the result more accurate. Researchers need to measure carbon emissions first, the concentration of carbon dioxide in the atmosphere, changes in atmospheric temperature, and then the economic and social losses associated with it. A number of factors that are difficult to determine are involved in every part. In addition, they need to compare these figures with those made when no emissions reduction actions are taken and temperatures naturally increase to a certain level, and to consider the impact emissions reduction measures will have on GDP growth. In order to make the cost assessments more comprehensive and accurate, they needto collect more data over a wider range, improve data processing and follow the latest scientific findings.

    Economic growth cannot offset environmental damage

    For the assessment of economic losses caused by climate change, researchers have widely used the following hypothesis: GDP growth can to some extent offset the economic damage caused by climate change. Many believe that if a country’s annual GDP growth remains at 3 percent, people’s living standards are likely to improve despite climate change.52Gernot Wagner and Martin L. Weitzman, Climate Shock: The Economic Consequences of a Hotter Planet, Princeton University Press, 2015, p.63.

    But this hypothesis is being questioned more frequently. One of the primary reasons is that some environmental damage cannot be offset by GDP growth. To cite a simple example, the production or consumption growth of electronic products such as Apple’s smartphones, though a factor to improve GDP, will not offset the serious consequences it has caused to the global food chain and ecological balance. More importantly, climate change affects not only the total amount of GDP, but also the rate and growth potential of GDP. For example, a higher temperature will affect labor productivity, one of the important factors for economic growth, and therefore harm the potential for sustained GDP growth. In addition, the economic costs of higher temperatures grow incrementally, rather than in a manner of simple addition. That is to say, every one degree rise in temperature will bring disproportionate harm.53Robert S. Pindyck, “Climate Change Policy: What Do the Models Tell Us?” Journal of Economic Literature, Vol.51, No.3 (2013), pp.860-871; Martin L. Weitzman, “What is the ‘Damages Function’ for Global Warning and What Difference Might it Make?” Climate Change Economics, Vol.1, No.1 (2010), pp.57-69.This means that climate change costs cannot be simply calculated by only deducting some percentages from the GDP growth rate. It should also be noted that the conventionalwisdom is unfounded that environmental protection needs should be decided by a country’s development level. Climate change may have a larger impact on the developing countries that badly need to improve economic growth.

    As research on climate change deepens and improves, there will be more and more similar findings to challenge the popular idea that economic growth and emissions reduction is a typical trade-off relationship, in which economic growth results in increased greenhouse gas emissions and therefore an effective climate policy will make us pay economically.54Climate Shock: The Economic Consequences of a Hotter Planet, pp.x-xi.For developing countries, a better and more accurate understanding of the relationship between the two will provide new ground for them to take the incentive for them to implement emissions reduction and environmental protection measures, including developing green energy.

    Conclusion

    The rise of the green energy industry in the developing countries is not only driven by their economic development needs, it is also an important part of the global efforts to reduce greenhouse gas emissions. It is generally predicted that for a long time in the future, the vast majority of the net increase in the global energy demand will come from the developing countries. That means changes in the energy structure, especially an increase in the share of carbonfree energy sources, in the developing countries will be significant to meet the global emissions reduction targets.

    In the long run, the rise of green energy industry will bring not only economic growth but also a new development path for developing countries. For the developing countries that are still in the early stages of industrialization, green energy offers a way that can save them from a carbon-intensive development. For countries with faster growth, carbonfree electricity provides an opportunity for them to abandon the pattern of“treatment after pollution” at an early date. These are prospects that will be significant for us to protect the living environment on the earth.

    Yuan Jian is Senior Research Fellow of China Institute of International Studies (CIIS).

    大型黄色视频在线免费观看| 91成人精品电影| 亚洲熟妇中文字幕五十中出| 欧美成人午夜精品| 大香蕉久久成人网| 女人高潮潮喷娇喘18禁视频| 色综合婷婷激情| 两性夫妻黄色片| or卡值多少钱| 搡老岳熟女国产| 成人永久免费在线观看视频| 性欧美人与动物交配| 国产av不卡久久| 老司机靠b影院| 成年女人毛片免费观看观看9| 欧美成人性av电影在线观看| 97人妻精品一区二区三区麻豆 | 婷婷亚洲欧美| 日韩欧美国产在线观看| 久99久视频精品免费| 国产伦人伦偷精品视频| 亚洲欧美日韩无卡精品| 在线观看www视频免费| 人妻久久中文字幕网| 亚洲av美国av| 久久亚洲精品不卡| 日韩大尺度精品在线看网址| 视频在线观看一区二区三区| 久久人人精品亚洲av| 曰老女人黄片| 久久久久国内视频| 中文字幕另类日韩欧美亚洲嫩草| 18禁美女被吸乳视频| 国产精品av久久久久免费| 久久人妻福利社区极品人妻图片| 中文字幕另类日韩欧美亚洲嫩草| 国产成人精品无人区| 欧美成狂野欧美在线观看| 久9热在线精品视频| 国产欧美日韩一区二区精品| 精品欧美国产一区二区三| 日韩有码中文字幕| 1024手机看黄色片| 夜夜夜夜夜久久久久| 免费在线观看黄色视频的| 成年女人毛片免费观看观看9| 成人18禁高潮啪啪吃奶动态图| 日韩大尺度精品在线看网址| 少妇熟女aⅴ在线视频| 精品福利观看| av电影中文网址| 一二三四在线观看免费中文在| 日韩免费av在线播放| av天堂在线播放| 国产精品,欧美在线| 色综合站精品国产| 成人国语在线视频| 成年版毛片免费区| 黄色女人牲交| 亚洲色图 男人天堂 中文字幕| 国产人伦9x9x在线观看| 在线十欧美十亚洲十日本专区| 男人舔奶头视频| 亚洲av日韩精品久久久久久密| 久久九九热精品免费| 天堂影院成人在线观看| 在线观看免费视频日本深夜| 久久精品国产清高在天天线| 国产av不卡久久| 久久国产精品男人的天堂亚洲| 国产乱人伦免费视频| 亚洲精品一卡2卡三卡4卡5卡| 久久久久精品国产欧美久久久| 长腿黑丝高跟| 中文字幕人成人乱码亚洲影| 欧美又色又爽又黄视频| 男女下面进入的视频免费午夜 | 长腿黑丝高跟| 51午夜福利影视在线观看| 精品免费久久久久久久清纯| 国产成人影院久久av| 后天国语完整版免费观看| 免费在线观看亚洲国产| 精品久久久久久成人av| 成人18禁高潮啪啪吃奶动态图| 韩国av一区二区三区四区| 亚洲五月色婷婷综合| 波多野结衣高清无吗| 国产欧美日韩一区二区三| 亚洲熟妇熟女久久| 香蕉国产在线看| 午夜免费鲁丝| 国产精品影院久久| videosex国产| av片东京热男人的天堂| 成年版毛片免费区| 亚洲片人在线观看| 午夜免费激情av| 最新美女视频免费是黄的| 亚洲一区中文字幕在线| 香蕉av资源在线| 又大又爽又粗| 观看免费一级毛片| 此物有八面人人有两片| 最近最新中文字幕大全免费视频| 亚洲成国产人片在线观看| 国产伦在线观看视频一区| 亚洲美女黄片视频| 国产伦人伦偷精品视频| bbb黄色大片| 亚洲欧美日韩高清在线视频| 国产一区二区三区视频了| 97人妻精品一区二区三区麻豆 | 黑丝袜美女国产一区| 99re在线观看精品视频| 亚洲五月色婷婷综合| 亚洲国产欧美日韩在线播放| 在线观看www视频免费| 国产精品久久久人人做人人爽| 亚洲国产欧美日韩在线播放| 国产真人三级小视频在线观看| 国产爱豆传媒在线观看 | 美女国产高潮福利片在线看| 窝窝影院91人妻| 怎么达到女性高潮| 亚洲国产欧美网| 黄网站色视频无遮挡免费观看| 国产乱人伦免费视频| 午夜视频精品福利| 一区二区三区激情视频| 久久久国产欧美日韩av| 久久久久久人人人人人| 女人爽到高潮嗷嗷叫在线视频| 国产视频内射| 成人亚洲精品av一区二区| 国产成人av激情在线播放| 欧美日韩精品网址| 精华霜和精华液先用哪个| 国产三级黄色录像| 人成视频在线观看免费观看| 这个男人来自地球电影免费观看| 色精品久久人妻99蜜桃| 亚洲av电影在线进入| 久久性视频一级片| tocl精华| 久久久国产成人免费| 色精品久久人妻99蜜桃| 操出白浆在线播放| 操出白浆在线播放| 国产成人欧美在线观看| 国产成+人综合+亚洲专区| 又黄又粗又硬又大视频| 久久精品91蜜桃| www日本黄色视频网| 亚洲久久久国产精品| 精品久久久久久久末码| 欧美黑人巨大hd| 久久久国产成人精品二区| xxx96com| 久久精品亚洲精品国产色婷小说| 中文字幕久久专区| 午夜久久久久精精品| 国产成人精品久久二区二区免费| 精品国内亚洲2022精品成人| 久久久久免费精品人妻一区二区 | 母亲3免费完整高清在线观看| 淫秽高清视频在线观看| 波多野结衣高清无吗| 在线av久久热| 欧美性猛交╳xxx乱大交人| 成人免费观看视频高清| 免费看十八禁软件| 十八禁人妻一区二区| 这个男人来自地球电影免费观看| 1024手机看黄色片| 国内久久婷婷六月综合欲色啪| 欧美日韩瑟瑟在线播放| 变态另类成人亚洲欧美熟女| 91字幕亚洲| 亚洲精品在线观看二区| 午夜影院日韩av| 黄频高清免费视频| bbb黄色大片| 十分钟在线观看高清视频www| 久久青草综合色| 一级毛片女人18水好多| 高清在线国产一区| 色综合欧美亚洲国产小说| 日本三级黄在线观看| 欧美最黄视频在线播放免费| 欧美日本视频| 欧美成人午夜精品| 无遮挡黄片免费观看| 国产三级在线视频| 久久精品夜夜夜夜夜久久蜜豆 | 看黄色毛片网站| 一本大道久久a久久精品| 日韩精品中文字幕看吧| 老熟妇仑乱视频hdxx| 亚洲电影在线观看av| 精品国产超薄肉色丝袜足j| 日韩成人在线观看一区二区三区| 18禁国产床啪视频网站| 国产黄色小视频在线观看| 欧美中文综合在线视频| 成人av一区二区三区在线看| 久久天堂一区二区三区四区| 欧美成人一区二区免费高清观看 | 搡老妇女老女人老熟妇| 九色国产91popny在线| 妹子高潮喷水视频| 18禁美女被吸乳视频| 99久久国产精品久久久| 成人精品一区二区免费| 亚洲全国av大片| 免费高清在线观看日韩| 成熟少妇高潮喷水视频| 夜夜看夜夜爽夜夜摸| 天堂√8在线中文| 亚洲成人久久爱视频| 国产精品乱码一区二三区的特点| 18禁国产床啪视频网站| 成人国语在线视频| www.自偷自拍.com| 十八禁人妻一区二区| 一级毛片女人18水好多| 亚洲国产看品久久| 最近在线观看免费完整版| 搞女人的毛片| 久久香蕉国产精品| 制服人妻中文乱码| 久久国产精品男人的天堂亚洲| 香蕉国产在线看| 两性午夜刺激爽爽歪歪视频在线观看 | 日韩中文字幕欧美一区二区| 女性生殖器流出的白浆| 精品第一国产精品| 亚洲真实伦在线观看| 欧美成人一区二区免费高清观看 | 怎么达到女性高潮| 国产精品久久久av美女十八| 日韩欧美 国产精品| 亚洲一码二码三码区别大吗| 成人18禁高潮啪啪吃奶动态图| 日韩欧美国产一区二区入口| 国产成年人精品一区二区| 亚洲成人久久爱视频| 欧美精品亚洲一区二区| 视频区欧美日本亚洲| 日本一区二区免费在线视频| 少妇熟女aⅴ在线视频| 国产精品二区激情视频| 亚洲av电影不卡..在线观看| 久久人人精品亚洲av| 久久九九热精品免费| 在线观看舔阴道视频| 亚洲激情在线av| 久久久久久亚洲精品国产蜜桃av| 色哟哟哟哟哟哟| 欧美成人性av电影在线观看| 亚洲专区字幕在线| 日本 av在线| 久久这里只有精品19| 成人特级黄色片久久久久久久| 久久中文字幕一级| 精品一区二区三区av网在线观看| 国产一卡二卡三卡精品| 国产视频内射| 午夜福利在线在线| 中文字幕人妻熟女乱码| 精品国产亚洲在线| 国产亚洲精品久久久久5区| 国产激情久久老熟女| 日本免费一区二区三区高清不卡| 国产色视频综合| 久久久久久久久中文| 他把我摸到了高潮在线观看| 精品一区二区三区四区五区乱码| 日本黄色视频三级网站网址| 男女视频在线观看网站免费 | 午夜福利在线在线| 欧美日韩一级在线毛片| 午夜激情av网站| 99国产综合亚洲精品| 50天的宝宝边吃奶边哭怎么回事| 在线视频色国产色| 亚洲精华国产精华精| 成人国语在线视频| 淫秽高清视频在线观看| 欧美成人一区二区免费高清观看 | 一级a爱视频在线免费观看| 久久亚洲精品不卡| 国产黄a三级三级三级人| 成人手机av| 窝窝影院91人妻| 黄网站色视频无遮挡免费观看| 他把我摸到了高潮在线观看| 日韩大码丰满熟妇| 黄色丝袜av网址大全| 中文字幕精品免费在线观看视频| 少妇被粗大的猛进出69影院| 国产亚洲av嫩草精品影院| 丁香六月欧美| 国产精品免费视频内射| 国产亚洲欧美在线一区二区| 老司机午夜十八禁免费视频| 亚洲欧美日韩高清在线视频| 午夜福利在线在线| 免费人成视频x8x8入口观看| 国产在线精品亚洲第一网站| 亚洲熟女毛片儿| 午夜免费观看网址| 亚洲人成电影免费在线| 一区二区三区国产精品乱码| 夜夜看夜夜爽夜夜摸| 啪啪无遮挡十八禁网站| 免费在线观看视频国产中文字幕亚洲| 欧美黑人欧美精品刺激| 国产精品亚洲av一区麻豆| 又紧又爽又黄一区二区| 日韩视频一区二区在线观看| 91成年电影在线观看| 真人一进一出gif抽搐免费| 亚洲一区中文字幕在线| 叶爱在线成人免费视频播放| 国产在线精品亚洲第一网站| 2021天堂中文幕一二区在线观 | 国产精品久久久av美女十八| 人人澡人人妻人| 韩国精品一区二区三区| 久久久久国产精品人妻aⅴ院| av福利片在线| 久久午夜亚洲精品久久| 日韩精品免费视频一区二区三区| 日韩欧美国产一区二区入口| 亚洲精品在线美女| 老熟妇乱子伦视频在线观看| 精品久久久久久久久久免费视频| 波多野结衣巨乳人妻| 无限看片的www在线观看| 亚洲欧美日韩高清在线视频| 亚洲精品色激情综合| 国产成人影院久久av| 国产精品自产拍在线观看55亚洲| 免费观看人在逋| 女生性感内裤真人,穿戴方法视频| 国产一区二区三区在线臀色熟女| 少妇裸体淫交视频免费看高清 | 国产精品美女特级片免费视频播放器 | 国产视频一区二区在线看| 男女之事视频高清在线观看| 日韩成人在线观看一区二区三区| 国产成人系列免费观看| 97人妻精品一区二区三区麻豆 | av欧美777| 欧美在线黄色| 人人妻人人澡欧美一区二区| 他把我摸到了高潮在线观看| 90打野战视频偷拍视频| 俺也久久电影网| 中文字幕精品亚洲无线码一区 | 少妇的丰满在线观看| 夜夜夜夜夜久久久久| 国产免费av片在线观看野外av| 伊人久久大香线蕉亚洲五| 97碰自拍视频| xxxwww97欧美| 亚洲av熟女| 90打野战视频偷拍视频| 久久久久久大精品| 亚洲成av片中文字幕在线观看| 97人妻精品一区二区三区麻豆 | 怎么达到女性高潮| x7x7x7水蜜桃| 99热6这里只有精品| 国产精品久久电影中文字幕| 欧美成人免费av一区二区三区| 麻豆成人午夜福利视频| 一个人免费在线观看的高清视频| 在线永久观看黄色视频| 2021天堂中文幕一二区在线观 | 久久久久久久午夜电影| 中文字幕另类日韩欧美亚洲嫩草| 女性生殖器流出的白浆| 亚洲精品美女久久久久99蜜臀| 波多野结衣av一区二区av| 午夜福利在线在线| 国产野战对白在线观看| 欧美黑人精品巨大| av欧美777| 久久久久亚洲av毛片大全| 村上凉子中文字幕在线| 亚洲男人天堂网一区| 国产成年人精品一区二区| 草草在线视频免费看| 欧美日韩瑟瑟在线播放| 国产精品一区二区精品视频观看| 久久国产精品人妻蜜桃| 久久精品国产99精品国产亚洲性色| 97超级碰碰碰精品色视频在线观看| 欧美中文日本在线观看视频| 亚洲人成电影免费在线| 久久精品夜夜夜夜夜久久蜜豆 | or卡值多少钱| 美女高潮到喷水免费观看| 制服丝袜大香蕉在线| 亚洲av熟女| 亚洲七黄色美女视频| 亚洲久久久国产精品| 国产亚洲欧美在线一区二区| 一二三四在线观看免费中文在| 99久久国产精品久久久| 少妇被粗大的猛进出69影院| 精品福利观看| 两人在一起打扑克的视频| 国产黄a三级三级三级人| 老熟妇仑乱视频hdxx| 国产片内射在线| 久久久久九九精品影院| 久久亚洲精品不卡| 亚洲一区中文字幕在线| 99久久精品国产亚洲精品| 国产一区在线观看成人免费| 久热爱精品视频在线9| 国产成人啪精品午夜网站| 亚洲成人免费电影在线观看| 黄色成人免费大全| 久久久久久九九精品二区国产 | 女性生殖器流出的白浆| 精品午夜福利视频在线观看一区| 免费无遮挡裸体视频| 亚洲精品色激情综合| 美女 人体艺术 gogo| 好看av亚洲va欧美ⅴa在| 日本 av在线| 精品熟女少妇八av免费久了| 日韩大尺度精品在线看网址| 欧美在线黄色| 1024手机看黄色片| 熟妇人妻久久中文字幕3abv| www.999成人在线观看| 久久这里只有精品19| 亚洲va日本ⅴa欧美va伊人久久| 亚洲自偷自拍图片 自拍| 欧洲精品卡2卡3卡4卡5卡区| 老熟妇仑乱视频hdxx| 日本a在线网址| 欧美中文日本在线观看视频| 欧美不卡视频在线免费观看 | 国产精品美女特级片免费视频播放器 | 亚洲成人久久性| 国产精品爽爽va在线观看网站 | 久久精品亚洲精品国产色婷小说| 亚洲专区中文字幕在线| 制服丝袜大香蕉在线| 精品久久久久久久久久久久久 | 久久香蕉国产精品| 欧美另类亚洲清纯唯美| 精品福利观看| 天堂动漫精品| 日韩有码中文字幕| www.www免费av| 18禁黄网站禁片免费观看直播| 一二三四社区在线视频社区8| 欧美日韩乱码在线| 成人亚洲精品av一区二区| 麻豆成人av在线观看| 欧美日本亚洲视频在线播放| 两个人视频免费观看高清| 在线播放国产精品三级| 在线观看www视频免费| 免费高清在线观看日韩| 99精品久久久久人妻精品| 免费看十八禁软件| 国产日本99.免费观看| 婷婷亚洲欧美| 成人亚洲精品一区在线观看| 成人一区二区视频在线观看| 香蕉av资源在线| 亚洲精品国产一区二区精华液| 搡老岳熟女国产| 大香蕉久久成人网| 国产伦在线观看视频一区| 久久人妻福利社区极品人妻图片| 91麻豆av在线| 成人av一区二区三区在线看| 日韩av在线大香蕉| 精品国产国语对白av| 哪里可以看免费的av片| 高清在线国产一区| 国产精品久久久av美女十八| 国产单亲对白刺激| 天天躁夜夜躁狠狠躁躁| 国产精品美女特级片免费视频播放器 | 搡老岳熟女国产| 久久亚洲真实| 国产aⅴ精品一区二区三区波| 韩国精品一区二区三区| 麻豆成人午夜福利视频| av免费在线观看网站| 亚洲午夜精品一区,二区,三区| 在线观看66精品国产| 亚洲激情在线av| 精品一区二区三区四区五区乱码| 久久精品亚洲精品国产色婷小说| 国产av一区二区精品久久| 日本撒尿小便嘘嘘汇集6| 日本熟妇午夜| 天堂动漫精品| 夜夜夜夜夜久久久久| 免费在线观看视频国产中文字幕亚洲| 国产免费av片在线观看野外av| 丝袜人妻中文字幕| 看黄色毛片网站| 99精品欧美一区二区三区四区| 人人妻人人澡人人看| 亚洲人成网站在线播放欧美日韩| 亚洲国产欧美一区二区综合| 精品高清国产在线一区| 亚洲国产看品久久| 亚洲成av人片免费观看| 岛国在线观看网站| 99在线人妻在线中文字幕| 老司机午夜福利在线观看视频| 妹子高潮喷水视频| av视频在线观看入口| 热re99久久国产66热| 99精品欧美一区二区三区四区| 夜夜夜夜夜久久久久| 国产黄片美女视频| 久久人妻福利社区极品人妻图片| 欧洲精品卡2卡3卡4卡5卡区| 精华霜和精华液先用哪个| 夜夜夜夜夜久久久久| 精品国产超薄肉色丝袜足j| 色播亚洲综合网| 女性被躁到高潮视频| 亚洲av成人av| 国内久久婷婷六月综合欲色啪| 婷婷六月久久综合丁香| 精品午夜福利视频在线观看一区| 欧美+亚洲+日韩+国产| 成人午夜高清在线视频 | 国产精品久久久久久亚洲av鲁大| 两性夫妻黄色片| 中文亚洲av片在线观看爽| 亚洲国产精品成人综合色| 韩国av一区二区三区四区| 久久精品影院6| 一级毛片女人18水好多| 亚洲专区中文字幕在线| 51午夜福利影视在线观看| 看黄色毛片网站| 中文字幕人妻丝袜一区二区| 亚洲人成电影免费在线| 一本大道久久a久久精品| 波多野结衣高清作品| 在线播放国产精品三级| 少妇粗大呻吟视频| 99久久无色码亚洲精品果冻| 亚洲午夜理论影院| 亚洲第一青青草原| 狂野欧美激情性xxxx| 一区二区三区高清视频在线| av视频在线观看入口| 国产熟女xx| 久久久精品欧美日韩精品| 欧美久久黑人一区二区| 欧美在线黄色| 国产单亲对白刺激| 韩国精品一区二区三区| 岛国视频午夜一区免费看| 在线观看日韩欧美| 亚洲专区国产一区二区| 国产一区二区三区在线臀色熟女| 国产99久久九九免费精品| 国产主播在线观看一区二区| 国产单亲对白刺激| 丝袜在线中文字幕| www.www免费av| 黄色成人免费大全| 国产伦人伦偷精品视频| 国产激情偷乱视频一区二区| 日韩三级视频一区二区三区| 国产久久久一区二区三区| 一级a爱片免费观看的视频| 在线观看免费日韩欧美大片| 精品少妇一区二区三区视频日本电影| 叶爱在线成人免费视频播放| 男男h啪啪无遮挡| 中文字幕人成人乱码亚洲影| 最新在线观看一区二区三区| 欧美性长视频在线观看| 变态另类丝袜制服| 一级毛片精品| 免费高清视频大片| 男女那种视频在线观看| 波多野结衣高清作品| 国产在线精品亚洲第一网站| 久久精品国产亚洲av香蕉五月| 欧美国产日韩亚洲一区| 免费av毛片视频| 国产精品一区二区免费欧美| 久久天堂一区二区三区四区| 亚洲免费av在线视频| 久久欧美精品欧美久久欧美| 亚洲成a人片在线一区二区| 自线自在国产av| 很黄的视频免费| 午夜福利高清视频| 日本撒尿小便嘘嘘汇集6| 999久久久精品免费观看国产| 午夜福利在线观看吧| 又黄又爽又免费观看的视频| 欧美日韩亚洲综合一区二区三区_|