Renewable energy, green energy, or low-carbon energy is energy from renewable resources that are naturally replenished on a human timescale. Renewable resources include sunlight, wind, the movement of water, and geothermal heat. Although most renewable energy sources are sustainable, some are not. For example, some biomass sources are considered unsustainable at current rates of exploitation. Renewable energy is often used for electricity generation, heating and cooling. Renewable energy projects are typically large-scale, but they are also suited to rural and remote areas and developing countries, where energy is often crucial in human development.
A carbon tax is a tax levied on the carbon emissions from producing goods and services. Carbon taxes are intended to make visible the hidden social costs of carbon emissions. They are designed to reduce greenhouse gas emissions by essentially increasing the price of fossil fuels. This both decreases demand for goods and services that produce high emissions and incentivizes making them less carbon-intensive. When a fossil fuel such as coal, petroleum, or natural gas is burned, most or all of its carbon is converted to CO2. Greenhouse gas emissions cause climate change. This negative externality can be reduced by taxing carbon content at any point in the product cycle.
Energy is sustainable if it "meets the needs of the present without compromising the ability of future generations to meet their own needs." Most definitions of sustainable energy include considerations of environmental aspects such as greenhouse gas emissions and social and economic aspects such as energy poverty. Renewable energy sources such as wind, hydroelectric power, solar, and geothermal energy are generally far more sustainable than fossil fuel sources. However, some renewable energy projects, such as the clearing of forests to produce biofuels, can cause severe environmental damage.
Energy policy is the manner in which a given entity has decided to address issues of energy development including energy conversion, distribution and use as well as reduction of greenhouse gas emissions in order to contribute to climate change mitigation. The attributes of energy policy may include legislation, international treaties, incentives to investment, guidelines for energy conservation, taxation and other public policy techniques. Energy is a core component of modern economies. A functioning economy requires not only labor and capital but also energy, for manufacturing processes, transportation, communication, agriculture, and more. Energy planning is more detailed than energy policy.
The politics of climate change results from different perspectives on how to respond to climate change. Global warming is driven largely by the emissions of greenhouse gases due to human economic activity, especially the burning of fossil fuels, certain industries like cement and steel production, and land use for agriculture and forestry. Since the Industrial Revolution, fossil fuels have provided the main source of energy for economic and technological development. The centrality of fossil fuels and other carbon-intensive industries has resulted in much resistance to climate friendly policy, despite widespread scientific consensus that such policy is necessary.
The energy policy of the United States is determined by federal, state, and local entities. It addresses issues of energy production, distribution, consumption, and modes of use, such as building codes, mileage standards, and commuting policies. Energy policy may be addressed via legislation, regulation, court decisions, public participation, and other techniques.
Renewable energy in Australia includes wind power, hydroelectricity, solar photovoltaics, heat pumps, geothermal, wave and solar thermal energy.
The fossil fuels lobby includes paid representatives of corporations involved in the fossil fuel industry, as well as related industries like chemicals, plastics, aviation and other transportation. Because of their wealth and the importance of energy, transport and chemical industries to local, national and international economies, these lobbies have the capacity and money to attempt to have outsized influence on governmental policy. In particular, the lobbies have been known to obstruct policy related to environmental protection, environmental health and climate action.
Despite abundant natural resources and a relatively small population, New Zealand is a net importer of energy, in the form of petroleum products. The ratio of non-renewable and renewable energy sources was fairly consistent from 1975 to 2008, with about 70 per cent of primary energy supply coming from hydrocarbon fuels. This ratio decreased to about 60 per cent in 2018. The proportion of non-renewable energy varies annually, depending on water flows into hydro-electricity lakes and demand for energy. In 2018, approximately 60% of primary energy was from non-renewable hydrocarbon fuels and 40% was from renewable sources. In 2007 energy consumption per capita was 120 gigajoules. Per capita energy consumption had increased 8 per cent since 1998. New Zealand uses more energy per capita than 17 of 30 OECD countries. New Zealand is one of 13 OECD countries that does not operate nuclear power stations.
100% renewable energy is the goal of the use renewable resources for all energy. 100% renewable energy for electricity, heating, cooling and transport is motivated by climate change, pollution and other environmental issues, as well as economic and energy security concerns. Shifting the total global primary energy supply to renewable sources requires a transition of the energy system, since most of today's energy is derived from non-renewable fossil fuels.
The climate change policy of the United States has major impacts on global climate change and global climate change mitigation. This is because the United States is the second largest emitter of greenhouse gasses in the world after China, and is among the countries with the highest greenhouse gas emissions per person in the world. In total, the United States has emitted over a trillion metric tons of greenhouse gasses, more than any country in the world.
Benjamin K. Sovacool is an American academic who is director of the Institute for Global Sustainability at Boston University as well as Professor of Earth and Environment at Boston University. He was formerly Director of the Danish Center for Energy Technology at the Department of Business Development and Technology and a professor of social sciences at Aarhus University. He is also professor of energy policy at the University of Sussex, where he formerly directed the Center on Innovation and Energy Demand and the Sussex Energy Group. He has written on energy policy, environmental issues, and science and technology policy. Sovacool is also the editor-in-chief of Energy Research & Social Science.
Marilyn A. Brown is a Regents' and Brook Byers Professor of Sustainable Systems in the School of Public Policy at the Georgia Institute of Technology. She joined Georgia Tech in 2006 after 22 years at Oak Ridge National Laboratory, where she held various leadership positions. Her work was cited by President Clinton as providing the scientific justification for signing the 1997 Kyoto Protocol. With Eric Hirst, she coined the term "energy efficiency gap" and pioneered research to highlight and quantify the unexploited economic potential to use energy more productively.
Energy consumption per person in Turkey is similar to the world average, and over 85 per cent is from fossil fuels. From 1990 to 2017 annual primary energy supply tripled, but then remained constant to 2019. In 2019, Turkey's primary energy supply included around 30 per cent oil, 30 per cent coal, and 25 per cent gas. These fossil fuels contribute to Turkey's air pollution and its above average greenhouse gas emissions. Turkey mines its own lignite but imports three-quarters of its energy, including half the coal and almost all the oil and gas it requires, and its energy policy prioritises reducing imports.
An energy transition is a significant structural change in an energy system regarding supply and consumption. Currently, a transition to sustainable energy is underway to limit climate change. It is also called renewable energy transition. The current transition is driven by a recognition that global greenhouse-gas emissions must be drastically reduced. This process involves phasing-down fossil fuels and re-developing whole systems to operate on low carbon electricity. A previous energy transition took place during the industrial revolution and involved an energy transition from wood and other biomass to coal, followed by oil and most recently natural gas.
In 2013, renewable energy provided 26.44% of the total electricity in the Philippines and 19,903 gigawatt-hours (GWh) of electrical energy out of a total demand of 75,266 gigawatt-hours. The Philippines is a net importer of fossil fuels. For the sake of energy security, there is momentum to develop renewable energy sources. The types available include hydropower, geothermal power, wind power, solar power and biomass power. The government of the Philippines has legislated a number of policies in order to increase the use of renewable energy by the country.
Diana Ürge-Vorsatz is a Hungarian scientist. She is a Vice-Chair of the IPCC, and professor of Environmental Sciences at Central European University. She is the Director of the Center for Climate Change and Sustainable Energy Policy. She has published widely on environmental and energy studies, primarily climate change mitigation.
Green recovery packages are proposed environmental, regulatory, and fiscal reforms to rebuild prosperity in the wake of an economic crisis, such as the COVID-19 pandemic or the Global Financial Crisis (GFC). They pertain to fiscal measures that intend to recover economic growth while also positively benefitting the environment, including measures for renewable energy, efficient energy use, nature-based solutions, sustainable transport, green innovation and green jobs, amongst others.
Climate change in South Africa is leading to increased temperatures and rainfall variability. Evidence shows that extreme weather events are becoming more prominent due to climate change. This is a critical concern for South Africans as climate change will affect the overall status and wellbeing of the country, for example with regards to water resources. Just like many other parts of the world, climate research showed that the real challenge in South Africa was more related to environmental issues rather than developmental ones. The most severe effect will be targeting the water supply, which has huge effects on the agriculture sector. Speedy environmental changes are resulting in clear effects on the community and environmental level in different ways and aspects, starting with air quality, to temperature and weather patterns, reaching out to food security and disease burden.
Jennie C. Stephens is an academic researcher, professor, author, and social justice advocate. She is Professor of Sustainability Science & Policy at Northeastern University in Boston, Massachusetts. She is also affiliated with the Women's, Gender and Sexuality Studies Program, the department of Civil & Environmental Engineering and the department of Cultures, Societies & Global Studies.
