Nuclear energy is not considered a renewable energy source because it relies on uranium, a finite resource.

Energy-efficient appliances consume less energy, resulting in reduced energy consumption and lower utility bills.

Hydropower is the most widely used renewable energy source for electricity generation, accounting for about 54% of global renewable electricity production.

The primary challenge associated with solar energy is its intermittency, as sunlight is not consistently available due to factors such as weather conditions and time of day.

Energy efficiency measures typically lead to lower energy costs, not higher costs.

The photovoltaic effect is the process by which certain materials generate an electrical current when exposed to light, which is the basis for solar cell technology.

China is the world's largest producer of wind energy, accounting for about 37% of global wind power generation.

The primary challenge associated with hydropower is its environmental impact, as it can disrupt natural ecosystems and affect fish populations.

Installing solar panels is a renewable energy measure, not an energy efficiency measure.

A wind turbine is a device that converts the kinetic energy of the wind into electrical energy.

Nuclear energy is not considered a renewable energy technology because it relies on uranium, a finite resource.

Geothermal energy is the process of generating electricity from heat stored in the Earth's crust.

Renewable energy sources do not produce air pollution, unlike fossil fuels.

The primary challenge associated with geothermal energy is the limited availability of suitable sites with sufficient heat flow to generate electricity.

Renewable energy incentives are not a type of energy efficiency program, but rather a type of renewable energy policy.