Each hour 430 quintillion Joules of energy from the sun hits the Earth. That’s 430 with 18 zeroes after it! In comparison, the total amount of energy that all humans use in a year is 410 quintillion Joules.
How much solar energy hits the Earth per year?
The solar energy reaching the earth is 12,211 gigawatt/hour. Using the measurement of the earth’s surface and the number of hours in a year, scientists conclude the earth receives 82 million quads of Btu energy from the sun each year. A “quad” is one quadrillion British Thermal Units (BTUs) of energy.
How much solar energy hits the Earth per second?
The sun’s luminosity is about 3.8 x 1026 Joules a second. In terms of mass, you can think of the total energy output as about 4,000,000 tons every second. When the curvature of the Earth and the density of the luminosity that hits our planet is considered, we receive only about 4.5 pounds per second of that energy.
How much solar energy hits the Earth per square centimeter?
Earth receives about 1/2,000,000,000 of the Sun’s radiant energy production. The average amount of solar radiation reaching Earth’s orbit (top of the atmosphere) and falling on a flat surface perpendicular to the Sun’s rays at that distance is about 2 calories per square centimeter per minute.
How much solar energy is received by the Earth per square meter?
At Earth’s average distance from the Sun (about 150 million kilometers), the average intensity of solar energy reaching the top of the atmosphere directly facing the Sun is about 1,360 watts per square meter, according to measurements made by the most recent NASA satellite missions.
What is the rate of capture of solar energy?
The average crystalline-based solar cell efficiency is thought to be between 12 percent and 22 percent. Some researchers have even been able to reach more than 40 percent efficiency, without considering the commercial potential and the high cost involved in producing this kind of output.
In which form solar energy reaches the Earth?
All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.
What happens to solar energy reaching the Earth?
About 30% of the solar energy that reaches Earth is reflected back into space. The rest is absorbed into Earth’s atmosphere. The radiation warms the Earth’s surface, and the surface radiates some of the energy back out in the form of infrared waves. … This greenhouse effect keeps the Earth warm enough to sustain life.
How much energy from sun reaches to Earth’s surface in Joules per second?
1. 7×1017 joule/second.
How much energy is released from the sun per second?
The sun releases energy at a mass–energy conversion rate of 4.26 million metric tons per second, which produces the equivalent of 384.6 septillion watts (3.846×1026 W).