Sustainable electricity

Renewable energy sources such as wind, hydro, solar, and geothermal energy can cause environmental damage but are generally far more sustainable than fossil fuel sources. The role of non-renewable energy sources in sustainable energy is controversial.

isif it "meets the needs of the present without compromising the ability ofto meet their own needs." Definitions of sustainable energy usually look at its effects on the environment, the economy, and society.

Energy efficiency—using less energy to deliver the same goods or services, or delivering comparable services with less goods—is a cornerstone of many sustainable energy strategies. The

Well-designed government policies that promote energy system transformation can lower greenhouse gas emissions and improve air quality simultaneously, and in many cases can also increase.

DefinitionsThe United Nationsdescribed the concept of , for which energy is a key component, in its 1987 report . It defined sustainable development as meeting "the needs of.

Renewable energy sourcesRenewable energy sources are essential to sustainable energy, as they generally strengthen energy security and emit far fewer greenhouse gases than fossil fuels.Renewable energy projects sometimes raise significant.

Decarbonisation of the global energy systemThe emissions reductions necessary to keep global warming below 2 °C will require a system-wide transformation of the way energy is produced, distributed.

Raising enough money for innovation and investment is a prerequisite for the energy transition.The IPCC estimates that to limit global warming to 1.5 °C, US$2.4 trillion would need to be.