Energy efficiency focuses on reducing the amount of energy required to perform a task or achieve a desired outcome.

Fossil fuels, such as coal, oil, and natural gas, are non-renewable energy sources because they are formed from the remains of ancient plants and animals and take millions of years to replenish.

Renewable energy sources, such as solar and wind, do not produce greenhouse gases or other pollutants during electricity generation, making them environmentally friendly.

Hydropower involves harnessing the energy of flowing or falling water to generate electricity.

Solar energy is intermittent, meaning it is dependent on the availability of sunlight. This can lead to fluctuations in electricity generation and the need for energy storage solutions.

Biomass energy involves the use of organic materials, such as plant and animal waste, to produce biogas through a process called anaerobic digestion.

Wind energy is a clean and sustainable source of energy that does not produce greenhouse gases or other pollutants.

Geothermal energy involves harnessing the heat from the Earth's core to generate electricity.

Hydropower projects can have a significant environmental impact, including the displacement of wildlife and the alteration of natural water flows.

Solar energy involves the use of photovoltaic cells to convert sunlight directly into electricity.

Biomass energy is a renewable energy source because it utilizes organic materials that can be replenished naturally.

Tidal energy involves harnessing the energy of tides to generate electricity.

Wind energy is intermittent, meaning it is dependent on the availability of wind. This can lead to fluctuations in electricity generation and the need for energy storage solutions.

Geothermal energy involves harnessing the heat from the Earth's core to generate electricity.

Renewable energy sources, such as solar and wind, do not produce greenhouse gases or other pollutants during electricity generation, making them environmentally friendly.