Sustainable power source, regularly alluded to as spotless vitality, originates from characteristic sources or procedures that are continually renewed. For instance, daylight or wind continue sparkling and blowing, regardless of whether their accessibility relies upon time and weather.While sustainable power source is frequently thought of as another innovation, bridling nature's capacity has for some time been utilized for warming , transportation , lighting, and the sky is the limit from there.

Green nanotechnology alludes to the utilization of nanotechnology to improve the ecological manageability of procedures creating negative externalities. It likewise alludes to the utilization of the results of nanotechnology to upgrade supportability. It incorporates making green nano-items and utilizing nano-items on the side of sustainability Green nanotechnology has been depicted as the improvement of clean innovations, "to limit potential ecological and human wellbeing dangers related with the assembling and utilization of nanotechnology items

Sun oriented vitality, aradition from the Sun equipped for creating heat, causing concoction responses, or producing power. The aggregate sum of sun oriented vitality occurrence on Earth is endlessly in abundance of the world's present and foreseen vitality prerequisites. On the off chance that appropriately outfit, this profoundly diffused source can possibly fulfill all future vitality needs. In the 21st century sun oriented vitality is relied upon to turn out to be progressively appealing as a sustainable power source.

Biomass is biological material derived from living or recently living organisms. In the context of producing bioenergy, it typically refers to agricultural byproducts and residues, woody waste products, and crops and microbes grown specifically for fuel. Bioenergy is a renewable form of energy produced from biomass. Development of bioenergy could contribute to long-term environmental and economic sustainability, and help mitigate the climate impact of using fossil fuels.

The green economy is defined as economy that aims at making issues of reducing environmental risks and ecological scarcities, and that aims for sustainable development without degrading the environment. It is closely related with ecological economics, but has a more politically applied focus.The 2011 UNEP Green Economy Report argues "that to be green , an economy must not only be efficient, but also fair. Fairness implies recognizing global and country level equity dimensions, particularly in assuring a just transition to an economy that is low-carbon, resource efficient, and socially inclusive.

A power module is an electrochemical cell that changes over the concoction vitality of a fuel (regularly hydrogen) and an oxidizing operator frequently oxygen into power through a couple of redox responses. Power modules are unique in relation to most batteries in requiring a ceaseless wellspring of fuel and oxygen (normally from air) to support the substance response, while in a battery the compound vitality for the most part originates from metals and their particles or oxide that are generally effectively present in the battery, aside from in stream batteries. Energy units can create power persistently for whatever length of time that fuel and oxygen are provided.

Recycling, recovery and reprocessing of waste materials for use in new products. The basic phases in recycling are the collection of waste materials, their processing or manufacture into new products, and the purchase of those products, which may then themselves be recycled. Typical materials that are recycled include iron and steel scrap, aluminum cans, glass bottles, paper, wood, and plastics.

Wind is brought about by the lopsided warming of the environment by the sun, varieties in the world's surface, and pivot of the earth. Mountains, waterways, and vegetation all impact wind stream designs , Wind turbines convert the vitality in wind to power by turning propeller-like sharp edges around a rotor. The rotor turns the drive shaft, which turns an electric generator. Three key variables influence the measure of vitality a turbine can outfit from the breeze: wind speed, air thickness, and cleared zone.

Unlike fossil fuel-fired power plants , nuclear reactors do not produce air pollution or carbon dioxide while operating. However, the processes for mining and refining uranium ore and making reactor fuel all require large amounts of energy. Nuclear power plants also have large amounts of metal and concrete, which require large amounts of energy to manufacture. If fossil fuels are used for mining and refining uranium ore, or if fossil fuels are used when constructing the nuclear power plant, then the emissions from burning those fuels could be associated with the electricity that nuclear power plants generate.

Squander to-vitality (WtE) is the way toward creating vitality as power or potentially heat from the essential treatment of waste, or the handling of waste into a fuel source. WtE is a type of vitality recuperation. Most WtE forms create power and additionally heat legitimately through burning, or produce a flammable fuel item, for example, methane, methanol, ethanol or manufactured energizes. The term WtE is usually utilized in explicit reference to cremation which consumes totally combusted waste at ultra-high temperatures taking into consideration vitality recuperation.

Bioremediation is also a waste management technique that involves the use of organisms to induce eliminate or neutralize pollutants from a contaminated site. Technologies are going to be sometimes classified as in situ or ex situ. in situ bioremediation also involves treating the contaminated material at the location, whereas ex situ involves the removal of the contaminated material to be treated elsewhere. Bioremediation would possibly occur on its own (natural attenuation or intrinsic bioremediation) or may exclusively effectively occur through the addition of fertilizers, oxygen, etc.