Energy & Green Tech

Yellen calls for diversified clean energy supply chains

US Treasury Secretary Janet Yellen stressed Monday the need for diversified clean energy supply chains as America shifts away from fossil fuels, warning that production should not be concentrated in a few countries.

Engineering

Device makes hydrogen from sunlight with record efficiency

Rice University engineers can turn sunlight into hydrogen with record-breaking efficiency thanks to a device that combines next-generation halide perovskite semiconductors with electrocatalysts in a single, durable, cost-effective ...

Energy & Green Tech

New catalysts for solar hydrogen production

Finding sustainable and clean fuels is crucial in today's global energy and climate crisis. One promising candidate that is increasingly gaining interest is hydrogen. However, today's industrial hydrogen production still ...

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Green energy

Green energy is the term used to describe sources of energy that are considered to be environmentally friendly and non-polluting, such as geothermal, wind, solar, and hydro. Sometimes nuclear power is also considered a green energy source. Green energy sources are often considered "green" because they are perceived to lower carbon emissions and create less pollution.

Green energy is commonly thought of in the context of electricity, mechanical power, heating and cogeneration. Consumers, businesses, and organizations may purchase green energy in order to support further development, help reduce the environmental impacts of conventional electricity generation, and increase their nation’s energy independence. Renewable energy certificates (green certificates or green tags) have been one way for consumers and businesses to support green energy.

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