Solar Energy Basics (2024)

Solar energy is a powerful source of energy that can be used to heat, cool, and light homes and businesses.

More energy from the sun falls on the earth in one hour than is used by everyone in the world in one year. A variety of technologies convert sunlight to usable energy for buildings. The most commonly used solar technologies for homes and businesses are solar photovoltaics for electricity, passive solar design for space heating and cooling, and solar water heating.

Businesses and industry use solar technologies to diversify their energy sources, improve efficiency, and save money. Energy developers and utilities use solar photovoltaic and concentrating solar power technologies to produce electricity on a massive scale to power cities and small towns.

Learn more about the following solar technologies:

Solar Photovoltaic Technology

Converts sunlight directly into electricity to power homes and businesses.

Passive Solar Technology

Provides light and harnessesheat from the sun to warm our homes and businesses in winter.

Solar Water Heating

Harnesses heat from the sun to provide hot water for homes and businesses.

Solar Process Heat

Uses solar energy to heat or cool commercial and industrial buildings.

Concentrating Solar Power

Harnesses heat from the sun to provide electricity for large power stations.

Additional Resources

For more information about solar energy, visit the following resources:

Solar Energy Technology Basics
U.S. Department of Energy Office of Energy Efficiency & Renewable Energy

U.S. Department of Energy Solar Decathlon

Energy Kids Solar Basics
U.S. Energy Information Administration Energy Kids

Clean Energy Education and Professional Development
U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy

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Solar Energy Basics (2024)

FAQs

What is solar energy answers? ›

Solar energy is any type of energy generated by the sun. Solar energy is created by nuclear fusion that takes place in the sun. Fusion occurs when protons of hydrogen atoms violently collide in the sun's core and fuse to create a helium atom.

What are the basics of the solar system? ›

The solar system consists of an average star we call the Sun, its "bubble" the heliosphere, which is made of the particles and magnetic field emanating from the Sun - the interplanetary medium - and objects that orbit the Sun: from as close as the planet Mercury all the way out to comets almost a light-year away.

What I wish I knew before getting solar panels? ›

Before you even consider installing solar panels, ask yourself, how old is my roof? If you know that you will need a new roof soon, or that a part of your roof is damaged, it probably isn't the best idea to install solar panels. If you can, take care of any roof repairs before the installation.

What are the 4 main types of solar energy? ›

Passive solar gain. Solar thermal (for heating) Concentrated solar power (for electricity) Solar Photovoltaics (electricity)

What are the 5 main types of solar energy? ›

Highlights : The 5 main types of solar energy are Photovoltaic (PV) Solar Energy, Solar Thermal Energy (STE), Concentrated Solar Power (CSP), Passive Solar Energy, and Building-integrated Photovoltaics (BIPV)

What are the 3 types of solar energy? ›

There are three primary technologies by which solar energy is harnessed: photovoltaics (PV), which directly convert light to electricity; concentrating solar power (CSP), which uses heat from the sun (thermal energy) to drive utility-scale, electric turbines; and solar heating and cooling (SHC) systems, which collect ...

Does solar energy use heat? ›

In short, yes. Some solar panels do use the sun's heat to generate electricity, and these are known as thermal panels. The light from the sun heats up the panels which can be used for household hot water or to generate steam and electricity.

How does solar energy heat? ›

Solar Thermal Technology

On a smaller scale, solar panels that harness thermal energy can be used for heating water in homes, other buildings, and swimming pools. Mirrors or reflectors concentrate the sun's rays to heat a special kind of liquid. The heat from this liquid boils water to create steam.

What is our solar system called? ›

It's just called "the Solar System". (Plenty of places and objects have names like that; it's no different from "the Arctic" or "the Moon" or "the Sun".) ("Sol system" is an invention of science fiction writers; it has no general use outside some science fiction contexts.

How many solar panels does it take to power a house? ›

Key takeaways. An average home needs between 17 and 25 solar panels to fully offset utility bills with solar. The number of solar panels you need depends on a few key factors, including your electricity consumption, geographic location, and individual panel specifications.

How long do solar panels last? ›

The Life Span of Solar Panels

Manufacturers design solar panels to last for decades. According to the Solar Energy Industries Association (SEIA), solar panels last between 20 and 30 years. Some well-made panels may even last up to 40 years.

Why are people hesitant to get solar panels? ›

Due to general solar power misinformation, lots of homeowners are led to believe that solar panels are free. On the flip side, there are also a lot of homeowners that believe solar panels are expensive.

What is solar energy for kids? ›

The primary source of all energy on planet Earth is from the sun. Solar power is power generated directly from sunlight. Solar power can be used for heat energyor converted into electric energy. Renewable Energy.

Why is solar energy? ›

WHAT IS SOLAR ENERGY? Solar energy is that produced by the Sun's light – photovoltaic energy – and its warmth – solar thermal – for the generation of electricity or the production of heat. Inexhaustible and renewable, since it comes from the Sun, solar energy is harnessed using panels and mirrors.

What is solar energy 8th grade? ›

The radiant light emitted by the Sun is known as solar energy. Solar energy is solar radiation that can generate heat, cause chemical processes or generate electricity. This energy is converted into electricity using solar cell panels. It is a renewable source of energy that is not harmful to the environment.

What is solar energy in essay? ›

Solar energy is the energy received from the Sun, where we use the heat to power our homes and appliances by transforming it into thermal or electrical energy. We can use solar energy endlessly as long as the Sun is present, and therefore, we can say that it is the most efficient and infinite form of energy.

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