The truth is this: every source of energy has costs and benefits that have to be carefully weighed. Wind and solar are no different. Most people are familiar with the benefits of wind and solar: reduced air pollution, reduced greenhouse gas emissions, and reduced reliance on fossil fuels. But not as many recognize the costs of wind and solar or understand how those costs hurt both the environment and people—especially people with lower incomes. //

Solar advocates often gloss over the solar-panel manufacturing process. They just say, “We turn sand, glass, and metal into solar panels.” This oversimplification masks the real environmental costs of the manufacturing process.

Solar panels are manufactured using minerals, toxic chemicals, and fossil fuels. In fact, solar panels require 10 times the minerals to deliver the same quantity of energy as a natural gas plant.[1]Quartz, copper, silver, zinc, aluminum, and other rare earth minerals are mined with heavy diesel-powered machinery. In fact, 38% of the world’s industrial energy and 11% of total energy currently go into mining operations.[2]

Once the materials are mined, the quartz and other materials get melted down in electric-arc furnaces at temperatures over 3,450°F (1,900°C) to make silicon—the key ingredient in solar cells. The furnaces take an enormous amount of energy to operate, and that energy typically comes from fossil fuels.[3] Nearly 80% of solar cells are manufactured in China, for instance, where weak environmental regulations prevail and lower production costs are fueled by coal. //

First, many buildings are not suitable for rooftop solar panels. Rooftop installations are typically exposed to less direct sunlight due to local weather patterns, shade from surrounding trees, the orientation of a building (which are often not angled toward the sun), or the pitch of the roof.

Second, the average cost to buy and install rooftop solar panels on a home as of July 2021 is $20,474.[7] This makes rooftop installations cost-prohibitive—especially for lower-income families.

Finally, even if we installed solar panels on all suitable buildings in the U.S. we could generate only 39% of the electricity the country needs according to the National Renewable Energy Laboratory.[8]

Solar panels also have a shorter lifespan[9] than other power sources (about half as long as natural gas[10] and nuclear plants[11]), and they’re difficult and expensive to recycle because they’re made with toxic chemicals. When solar panels reach the end of their usable life, their fate will most likely be the same as most of our toxic electronic waste: They will be dumped in poorer nations. It is estimated that global solar panel waste will reach around 78 million metric tons by 2050[12]–the equivalent of throwing away nearly 60 million Honda Civic cars.[13] //

Adding more renewable energy to the grid is not only expensive; it’s dangerous! The North American Electric Reliability Corporation (NERC), a nonprofit organization that monitors the reliability, resilience, and security of the grid, says that the number-one risk to the electrical grid in America is adding more unreliable renewables.[16]

The reliability of a power source is measured by capacity factor. The capacity factor of a power plant tracks the time it’s producing maximum power throughout the year. When we compare the capacity factors of power plants, we see that solar is the least reliable energy source: natural gas is twice as reliable as solar, and nuclear energy is three times more reliable. //

A study conducted across 26 countries over two decades by the National Bureau of Economic Research (NBER) concluded for every 1 megawatt of solar or wind power installed there need to be 1.12 megawatts of fossil fuels (usually natural gas) as backup capacity because solar and wind are unreliable.[21] Moreover, using backup diesel generators and ramping power plants up and down to meet energy shortfalls are two of the worst ways to use fossil fuels; they’re inefficient and cause unnecessary pollution.

A final point: solar and wind have low power densities. According to a facts guide on nuclear energy from the U.S. Department of Energy, a typical 1,000-megawatt nuclear facility in the United States needs a little more than 1 square mile to operate. Solar farms, by contrast, need 75 times more land and wind farms need 360 times more land, to produce the same amount of electricity.[22]

Even if we could overcome all the practical constraints on storing, transmitting, and distributing solar power, supplying a country the size of the U.S. would require over 22,000 square miles of solar panels[23]—approximately the size of New Jersey, Maryland, and Massachusetts combined.[24] And the unreliability of solar power means that even with that many solar panels, we would continue to need most of our existing power plants. //

Some people theorize that we will eventually be able to store surplus solar energy in batteries, but the reality is batteries cost about 200 times more than the cost of natural gas to solve energy storage at scale.[34] In addition, batteries don’t have enough storage capacity to meet our energy needs. Currently, America has 1 gigawatt of large-scale battery storage that can deliver power for up to four hours without a recharge. A gigawatt is enough energy to power 750,000 homes, which is a small fraction of the amount of energy storage we would need for a grid powered mostly by renewables. It is, for instance, less than 1% of the 120 gigawatts of energy storage that would be needed for a grid powered 80% by renewables.[35]

Manufacturing batteries also takes a serious toll on the environment, as they require lots of mining, hydrocarbons, and electricity. According to analysis completed by the Manhattan Institute, it requires the energy equivalent of about 100 barrels of oil to make batteries that can store a single barrel of oil-equivalent energy. And between 50 to 100 pounds of various materials are mined, moved, and processed for one pound of battery produced. Enormous quantities of lithium, copper, nickel, graphite, rare earth elements, and cobalt would need to be mined in China, Russia, Congo, Chile, and Argentina where weak environmental regulations and poor labor conditions prevail.[36] //

Here are five steps we can begin to take towards making things better for both people and the planet:

• End subsidies and incentives for solar and wind power;
• Invest in research and development to advance new energy technologies;
• Build new efficient natural gas power plants (and hydro and geothermal where possible);
• Reform regulations and build nuclear power plants;
• Retire the worst coal power plants (5% of power plants create 73% of carbon emissions from electricity generation)[38].

Every day we spend chasing fantasies causes unnecessary harm and suffering. Let’s pursue energy solutions that benefit people and also save the environment.