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 cannot be replenished on a human timescale.

Energy-efficient appliances consume less energy to perform the same tasks as traditional appliances, leading to reduced energy consumption and lower utility bills.

Nuclear power plants do not generate electricity from renewable energy sources. Instead, they use nuclear fission to produce energy.

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

Hydropower is the process of generating electricity from the energy of moving water, typically using dams and turbines.

Wind energy refers to the process of capturing and converting the kinetic energy of the wind into electrical energy.

Renewable energy sources are generally considered to be cost-competitive with traditional energy sources, and in many cases, they can offer cost savings over the long term.

Geothermal energy is the process of generating electricity from the heat of the Earth's interior, typically using geothermal power plants.

Incandescent bulbs are not considered energy-efficient lighting technology because they consume more energy and produce less light compared to CFLs and LEDs.

Energy efficiency refers to the practice of using less energy to perform the same tasks, often through the use of more efficient technologies and practices.

Energy-efficient building materials can help reduce energy consumption and lower utility bills, and they can also improve indoor air quality. However, they are not typically associated with increased construction costs.

Wave energy refers to the process of capturing and converting the energy of ocean waves into electrical energy.

Fossil fuels are not a type of renewable energy storage technology because they are non-renewable energy sources.

Ocean thermal energy conversion (OTEC) is the process of generating electricity from the temperature difference between the warm surface waters and the cold deep waters of the ocean.

Internal combustion engine vehicles are not considered energy-efficient transportation technology because they consume more fuel and produce more emissions compared to electric, hybrid, and fuel-efficient vehicles.