Renewable Green Energy India
India is the world's 3rd largest consumer of electricity and the world's 3rd largest renewable energy producer with 46.3% of energy capacity installed as of October 2024 (203.18 GW of 452.69 GW) coming from renewable sources. Ernst & Young's (EY) 2021 Renewable Energy Country Attractiveness Index (RECAI) ranked India 3rd behind USA and China. In FY2023-24, India is planning to issue 50 GW tenders for wind, solar and hybrid projects. India has committed for a goal of 500 GW renewable energy capacity by 2030.
In 2016, Paris Agreement's Intended Nationally Determined Contributions targets, India made commitment of producing 50% of its total electricity from non-fossil fuel sources by 2030. In 2018, India's Central Electricity Authority set a target of producing 50% of the total electricity from non-fossil fuels sources by 2030. India has also set a target of producing 175 GW by 2022 and 500 GW by 2030 from renewable energy.
As of October 2024, 92.12 GW solar energy is already operational, projects of 48.21 GW are at various stages of implementation and projects of 25.64 GW capacity are under various stages of bidding. In 2020, 3 of the world's top 5 largest solar parks were in India including world's largest 2255 MW Bhadla Solar Park in Rajasthan and world's second-largest solar park of 2000 MW Pavgada Solar Park Tumkur in Karnataka and 1000 MW Kurnool in Andhra Pradesh. Wind power in India has a strong manufacturing base with 20 manufactures of 53 different wind turbine models of international quality up to 3 MW in size with exports to Europe, United States and other countries.
Solar, wind and run-of-the-river hydroelectricity are environment-friendly cheaper power sources they are used as "must-run" sources in India to cater for the base load, and the polluting and foreign-import dependent coal-fired power is increasingly being moved from the "must-run base load" power generation to the load following power generation (mid-priced and mid-merit on-demand need-based intermittently-produced electricity) to meet the peaking demand only. Some of the daily peak demand in India is already met with the renewable peaking hydro power capacity. Solar and wind power with 4-hour battery storage systems, as a source of dispatchable generation compared with new coal and new gas plants, is already cost-competitive in India without subsidy.
India initiated the International Solar Alliance (ISA), an alliance of 121 countries. India was world's first country to set up a ministry of non-conventional energy resources (Ministry of New and Renewable Energy (MNRE)) in early 1980s. Solar Energy Corporation of India (SECI), a public sector undertaking, is responsible for the development of solar energy industry in India. Hydroelectricity is administered separately by the Ministry of Power and not included in MNRE targets.
Renewable Energy Overview
Renewable energy (also called green energy) is energy made from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, and hydropower. Bioenergy and geothermal power are also significant in some countries. Some also consider nuclear power a renewable power source, although this is controversial, as nuclear energy requires mining uranium, a non-renewable resource. Renewable energy installations can be large or small and are suited for both urban and rural areas. Renewable energy is often deployed together with further electrification. This has several benefits: electricity can move heat and vehicles efficiently and is clean at the point of consumption. Variable renewable energy sources are those that have a fluctuating nature, such as wind power and solar power. In contrast, controllable renewable energy sources include dammed hydroelectricity, bioenergy, or geothermal power.
Renewable energy systems have rapidly become more efficient and cheaper over the past 30 years. A large majority of worldwide newly installed electricity capacity is now renewable. Renewable energy sources, such as solar and wind power, have seen significant cost reductions over the past decade, making them more competitive with traditional fossil fuels. In most countries, photovoltaic solar or onshore wind are the cheapest new-build electricity. From 2011 to 2024, renewable energy grew from 20% to 28% of global electricity supply. Power from the sun and wind accounted for most of this increase, growing from a combined 2% to 10%. Use of fossil energy shrank from 68% to 62%. In 2024, renewables accounted for over 30% of global electricity generation and are projected to reach over 45% by 2030. Many countries already have renewables contributing more than 20% of their total energy supply, with some generating over half or even all their electricity from renewable sources.
The main motivation to use renewable energy instead of fossil fuels is to slow and eventually stop climate change, which is mostly caused by their greenhouse gas emissions. In general, renewable energy sources pollute much less than fossil fuels. The International Energy Agency estimates that to achieve net zero emissions by 2050, 90% of global electricity will need to be generated by renewables. Renewables also cause much less air pollution than fossil fuels, improving public health, and are less noisy.
The deployment of renewable energy still faces obstacles, especially fossil fuel subsidies, lobbying by incumbent power providers, and local opposition to the use of land for renewable installations. Like all mining, the extraction of minerals required for many renewable energy technologies also results in environmental damage. In addition, although most renewable energy sources are sustainable, some are not.
Solar Power Energy
Solar energy is radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity, solar thermal energy (including solar water heating), and solar architecture. It is an essential source of renewable energy, and its technologies are broadly characterized as either passive solar or active solar depending on how they capture and distribute solar energy or convert it into solar power. Active solar techniques include the use of photovoltaic systems, concentrated solar power, and solar water heating to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favourable thermal mass or light-dispersing properties, and designing spaces that naturally circulate air.
In 2020, the International Energy Agency said that "the development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits. It will increase countries' energy security through reliance on an indigenous, inexhaustible, and mostly import-independent resource, enhance sustainability, reduce pollution, lower the costs of mitigating global warming .... these advantages are global".
Wind Power Energy
Wind power Energy is the use of wind energy to generate useful work. Historically, wind power was used by sails, windmills and windpumps, but today it is mostly used to generate electricity. This article deals mostly with wind power for electricity generation. Today, wind power is almost completely generated with wind turbines, generally grouped into wind farms and connected to the electrical grid.
In 2021, wind supplied over 1800 TWh of electricity, which was over 6% of world electricity and about 2% of world energy. With about 100 GW added during 2021, mostly in India, global installed wind power capacity exceeded 800 GW. To help meet the Paris Agreement goals to limit climate change, analysts say it should expand much faster - by over 1% of electricity generation per year.
Wind power Energy is considered a sustainable, renewable energy source, and has a much smaller impact on the environment compared to burning fossil fuels. Wind power is variable, so it needs energy storage or other dispatchable generation energy sources to attain a reliable supply of electricity. Land-based (onshore) wind farms have a greater visual impact on the landscape than most other power stations per energy produced. Wind farms sited offshore have less visual impact and have higher capacity factors, although they are generally more expensive. Offshore wind power currently has a share of about 10% of new installations.
Wind power Energy is one of the lowest-cost electricity sources per unit of energy produced. In many locations, new onshore wind farms are cheaper than new coal or gas plants.
Regions in the higher northern and southern latitudes have the highest potential for wind power. In most regions, wind power generation is higher in nighttime, and in winter when PV output is low. For this reason, combinations of wind and solar power are suitable in many countries. Hybrid power are combinations between different technologies to produce power. In power engineering, the term 'hybrid' describes a combined power and energy storage system.
Hybrid Power System
Hybrid systems, as the name implies, combine two or more modes of electricity generation together, usually using renewable technologies such as solar photovoltaic (PV) and wind turbines. Hybrid systems provide a high level of energy security through the mix of generation methods, and often will incorporate a storage system (battery, fuel cell) or small fossil fueled generator to ensure maximum supply reliability and security.
Hybrid renewable energy systems are becoming popular as stand-alone power systems for providing electricity in remote areas due to advances in renewable energy technologies and subsequent rise in prices of petroleum products. A hybrid energy system, or hybrid power, usually consists of two or more renewable energy sources used together to provide increased system efficiency as well as greater balance in energy supply.
Hybrid power plants often contain a renewable energy component (such as PV) that is balanced via a second form of generation or storage such as a diesel genset, fuel cell or battery storage system. They can also provide other forms of power such as heat for some applications.