Energy is essential to life and all living organisms. The sun, directly or indirectly, is the source of all the energy available on Earth. Our energy choices and decisions impact Earth’s natural systems in ways we may not be aware of, so it is essential that we choose our energy sources carefully.

Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another.

Energy is defined as the ability to do work. Energy can be found in many things and can take different forms. For example, kinetic energy is the energy of motion, and potential energy is energy due to an object’s position or structure.

• The word energy comes from the Greek word energeia.
• Most types of energy are either a form of kinetic energy or potential energy.
• Common examples include heat energy, elastic potential energy, chemical energy, sound energy, nuclear energy, geothermal energy and gravitational potential energy.

Thomas Young (1773 − 1829) first introduced the word “energy” to the field of physics in 1800, but the word did not gain popularity. Thomas Young later established the wave nature of light through interference experiments.

Electricity is an essential part of modern life and important to the U.S. economy. People use electricity for lighting, heating, cooling, and refrigeration and for operating appliances, computers, electronics, machinery, and public transportation systems.

Emissions of greenhouse gases and other air pollutants, especially when a fuel is burned. Use of water resources to produce steam, provide cooling, and serve other functions. Discharges of pollution into water bodies, including thermal pollution (water that is hotter than the original temperature of the water body).

• High cost of designing and building nuclear power station.
• Waste in the form of used fuel rods which are very hot and highly radioactive.
• Hot water discharged causes thermal pollution to the environment.
• Risk of accidents which may lead to the leakage of large amounts of radioactive substances to the environment.

Uses Of Electricity

• Entertainment.
• Healthcare.
• Engineering.
• Transport and Communication.
• Outdoors.
• Household.
• Commercial.
• Office.

What Uses the Most Electricity in My Home?

• Air conditioning and heating: 46 percent.
• Water heating: 14 percent.
• Appliances: 13 percent.
• Lighting: 9 percent.
• TV and Media Equipment: 4 percent.

Most TV’s use about 80 to 400 watts, depending on the size and technology. Using a sample cost of 15¢ per kilowatt-hour and five hours of viewing a day, that’s $1.83 to $9.13/mo. ($22 to $110 per year). Below you’ll find energy usage information for different models.

about 57 watts

It is very unlikely that you will ever where-out a modern LED LCD TV, if it is left on with the same image you can get image retension (this would happen over months) but if your image changes the LCD won’t degrade in any meaningful way. The LED backlight will lose brightness over a long period of time.

One of the main reasons your electric bill may be high is that you leave your appliances or electronics plugged in whether you’re using them or not. The problem is, these devices are sitting idle, sucking electricity out of your home while waiting for a command from you, or waiting for a scheduled task to run.