Abstract
Abstract:
This paper seeks to study Electric power generation and regulation by various means, electricity is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Electricity is essential for modern life, yet almost one billion people live without access to it. Challenges such as climate change, pollution and environmental destruction require that we change the way we generate electricity. Over the past century, the main energy sources used for generating electricity have been fossil fuels, hydroelectricity and, since the 1950s, nuclear energy. Despite the strong growth of renewables over the last few decades, fossil-based fuels remain dominant worldwide. Their use for electricity generation continues to increase in both absolute and relative terms: in 2014, fossil fuels generated 64.5% of worldwide electricity, compared with 61.9% in 1990. Access to reliable electricity is vital for human wellbeing. Currently one in seven people in the world has no access to electricity. As such, electricity demand will continue to rise. At the same time, greenhouse gas emissions must decrease drastically if we are to mitigate climate change, and we must switch to cleaner sources of energy to reduce air pollution. This will likely require large increases of all low-carbon energy sources, of which nuclear is an important part. In order to achieve a sustainable world, all sectors of the economy will need to be decarbonized, including transport, heat and industry. Electricity provides the means to utilize low-carbon energy sources, and so widespread electrification is seen as a key tool for decarbonizing sectors traditionally powered by fossil fuels. As the end uses for electricity grow, and as the benefits of electricity are extended to all people, demand will grow significantly. Fossil fuel power plants burn coal or oil to create heat which is in turn used to generate steam to drive turbines which generate electricity. In gas plants hot gases drive a turbine to generate electricity, whereas a combined cycle gas turbine (CCGT) plant also uses a steam generator to increase the amount of electricity produced. In 2014, fossil fuels generated 64.5% of electricity worldwide. These plants generate electricity reliably over long periods of time, and are generally cheap to build. However, burning carbon-based fuels produces large amounts of carbon dioxide, which drives climate change. These plants also produce other pollutants, such as oxides of Sulphur and nitrogen, which cause acid rain. The burning of fossil fuels for energy causes considerable numbers of deaths due to air pollution. For instance, it is estimated that in China alone 670,000 people die prematurely - every year due to the use of coal.