	Introduction

China is the world's most populous country with approximately 1.4 billion people. It has experienced tremendous economic growth over the last three decades with an average annual increase in gross domestic product (GDP) of 9.8% during that period. This rapid economic growth has led to an increasing demand for energy, spurring China to more than double its electric power generating capacity in each of the last three decades, growing from 66 GigaWatts (GW) installed in 1980 to 1,100 GW installed as of 2011. According to the U.S. Energy Information Administration (EIA), coal currently fuels about 66% of China's electricity generation. However, the reduction of air pollution caused in part by the burning of coal for electric power has become a major public policy focus in China. China has ambitious targets for developing both its hydropower and non-hydropower renewable energy resources with a major push of laws, regulations and incentives in the last few years. The wind power sector is illustrative of China's accomplishments, as installed wind power capacity has gone from 567 MegaWatts (MW) in 2003 to 75,000 MW in 2012. While energy development and conservation are both being pursued, energy conservation investment projects are given priority over energy development projects under Article 10, with projects under the central government being selected on "technological, economic and environmental comparisons and validations of the projects." Article 39 focuses on improving energy efficiency in a variety of applications:
The State encourages the development of the following universal energy conservation technologies: (1) promote the wide use of cogeneration of heat and power and district heating, increase the utilization rate of heat and power units, develop heat-cascading technology, combined heat, power and cooling technology and combined heat, power and coal gas technology, and increase the efficiency of thermal energy application in an all-round way; (2) gradually achieve more-efficient operation of electric motors, fans, pumping equipment and systems; develop adjustable speed motor drives for energy conservation and electric-electronic power saving technology; develop, produce and disseminate the use of high-quality and low-cost energy-efficient appliances and equipment; and increase the efficiency of electric power; (3) develop and disseminate the use of clean coal technologies, including fluidized bed combustion, smokeless combustion, and gasification and liquefaction, that are suited to domestic coals in order to increase coal utilization efficiency; and (4) develop and disseminate other universal energy-efficient technologies that are proved mature and yield remarkable benefits. However, the key piece of legislation in recent years for moving renewable energy deployment forward is the Renewable Energy Law of 2005 . The law was based on goals to "promote the development and utilization of renewable energy, improve the energy structure, diversify energy supplies, safeguard energy security, protect the environment, and realize the sustainable development of the economy and society." The 11 th FYP targeted a 20% overall reduction in the energy intensity of the economy. The 12 th FYP builds upon this goal, aiming to reduce energy intensity an additional 16% by 2015. With the lifting of the effective "ban" on large- and medium-scale hydropower development, China now reportedly plans to virtually double its hydropower capacity to 380 MW by 2020. China increased its goals for domestic solar PV capacity, with installed capacity rising to 19 GW in 2013, following through with a policy to move away from coal for electric power generation. Wind
China's installed wind capacity was reported to be 91 GW as of 2013, and plans have been reported to increase wind capacity to 200 GW by 2020. Renewable energy is subsidized by a rate fee charged to all electricity users in China. The fee was originally based on the incremental cost difference between coal and renewable energy (which was estimated in China at $0.044 to $0.059 per kWh). United States

Some observers would argue that the United States does not have a comprehensive national policy in place for promotion of renewable energy technologies. China recognizes that given the growing demand for energy at home, developing its domestic renewable energy industry and building manufacturing capacity can lead to advantages in future export markets. Officially, however, energy efficiency and conservation remain China's top energy priority. These are considered the "low-hanging fruit" in the quest to reduce energy use and cut demand. The 11 th FYP saw China's energy consumption per unit of GDP (i.e., energy intensity) drop by 19.6%. China is the world's largest market for new construction with approximately 2 billion square meters of floor space added annually. New standards have been in development since 2005 with national energy design criteria for residential buildings. Some observers argue that the current higher costs of renewable electricity do not favor market adoption. However, the goals for increased use of renewable energy are several, and include energy security, energy independence, cleaner air, and more recently anthropogenic climate change, sustainability concepts, and economic development.
China is the world's most populous country with approximately 1.4 billion people. It has experienced tremendous economic growth over the last three decades with an average annual increase in gross domestic product (GDP) of 9.8% during that period. This has led to an increasing demand for energy, spurring China to more than double its electric power generating capacity in each of the last three decades, growing from 66 GigaWatts (GW) installed in 1980 to 1,100 GW installed as of 2011. Coal currently fuels about 66% of China's electricity generation. However, the reduction of air pollution (caused in part by the burning of coal for electric power) has become a major public policy focus in China.
China has set ambitious targets for developing its renewable energy resources with a major push of laws, policies, and incentives in the last few years. The wind power sector is illustrative of China's accomplishments, as installed wind power capacity has gone from 0.567 GW in 2003 to 91 GW in 2013; China surpassed the United States in 2010 with over 41 GW of installed wind power capacity. Notably, however, approximately 18% of that capacity was not yet connected to the power grid in 2013. Plans already exist to grow China's wind power capacity to 200 GW by 2020. A similar goal exists for the solar photovoltaic (PV) power sector. Installed solar PV capacity rose from 0.14 GW as of 2009 to over 19 GW in 2013, with goals reported for 50 GW of solar PV capacity by 2020. Also, a hold on large- and medium-scale hydropower project development has been lifted, with a virtual doubling of hydropower capacity from approximately 200 GW of capacity to 380 GW planned by 2020. The 12th Five-Year Plan (FYP) encompassing the years 2011 to 2015 has further formalized the link to green energy with specific deployment goals and investment. China recognizes that developing its domestic renewable energy industry and building its manufacturing capacity will help it meet energy demands at home and potentially win advantages in future export markets.
The key piece of legislation in recent years for advancing renewable electricity in China is the Renewable Energy Law of 2005. The law was designed to "promote the development and utilization of renewable energy, improve the energy structure, diversify energy supplies, safeguard energy security, protect the environment, and realize the sustainable development of the economy and society." Renewable energy is subsidized by a fee charged to all electricity users in China of about 0.029 cents per kiloWatt-hour, and was originally based on the incremental cost difference between coal and renewable energy power generation.
However, energy efficiency and conservation are officially China's top energy priority. These are considered the "low-hanging fruit" in the quest to reduce energy use and cut demand. Energy conservation investment projects have priority over energy development projects under the Energy Conservation Law of 1997, with government-financed projects being selected on "technological, economic and environmental comparisons and validations of the projects." China is the world's largest market for new construction, and new building standards have been in development since 2005 with national energy design criteria for residential buildings. In the power generation sector, many smaller, less efficient coal-fired power plants have been closed. The 11th FYP targeted a 20% overall reduction in the energy intensity (i.e., energy consumption per unit of GDP) of the economy. The 12th FYP builds upon this goal, aiming to reduce energy intensity an additional 16% by 2015.
In contrast to China, some argue that the United States does not have a comprehensive national policy in place for promotion of renewable energy technologies, with some observers saying that the higher costs of renewable electricity are not conducive to market adoption. However, for both countries, the reasons for increasing the use of renewable energy are diverse, and include energy security, energy independence, cleaner air, and more recently anthropogenic climate change, sustainability, and economic development.