In the process of powering things with fossil fuels, first geologists make guesses about where exactly oil, coal and gas deposits may be; then miners dig to where they hope the deposits are. Sometimes they have to dig several times before they find anything, because the geologists, after all, were just guessing.
Once the fuel is found, it is transported, by ship, train, truck, or, in the case of oil and gas, pipeline, to refineries, where the raw material is made into usable products. Then coal, oil and gas are sent, again, by ship, train or truck, or, in the case of oil and gas, pipeline, to power stations, which burn them to generate electricity, which is sent to the grid, where utilities distribute it to businesses and homes.
In addition, diesel oil and gasoline are sent, by pipeline, tanker ship, railroad or tanker truck, to gas stations and other users. Coal and kerosene are still burned by millions of people for heat and cooking in some of the poorer regions of the world.
The entire trip, from being in the ground to where it is burned for energy or heat, can be dozens, or hundreds, or thousands of miles. Just think for a moment about the distance from Saudi Arabia to the United States.
Now compare this to solar or wind energy. In the simplest example, the journey is measured in feet, from where sunlight is converted to electricity by the rooftop solar panels on a house and then travels to the house's wiring and to its battery storage. The electricity may travel as much as several miles if there is some left over and it is fed into the grid. Or the distance may be dozens or, in rare cases, hundreds of miles, if the electricity is generated by solar and wind farms operated by utilities. But no ships, pipelines or trains are needed, and the only trucks involved are the ones carrying workers who build, install and maintain the electrical infrastructure.
Building, operating and maintaining solar cells and wind turbines is a very simple and inexpensive thing compared to mining, refining and distributing fossil fuels. And solar and wind energy keep getting less and less expensive as more of it is generated, while fossil fuels keep getting more expensive. The point where electricity from solar or wind will be cheaper than electricity from fossil fuels? That point is several years ago, and the gap just keeps growing.
Plus with fossil fuels, there are those pesky little details of pollution and global warming. And also accidental fires and explosions.
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