Nuclear Power is the Most Reliable Energy Source and It's ...

Nuclear energy is America’s work horse.

It’s been rolling up its sleeves for six decades now to provide constant, reliable, carbon-free power to millions of Americans.

Just how reliable has nuclear energy been?

It has roughly supplied a fifth of America’s power each year since 1990.

To better understand what makes nuclear so reliable, take a look at the graph below.

Renewable energy, often referred to as clean energy, comes from natural sources or processes that are constantly replenished. For example, sunlight and wind keep shining and blowing, even if their availability depends on time and weather.

While renewable energy is often thought of as a new technology, harnessing nature’s power has long been used for heating, transportation, lighting, and more. Wind has powered boats to sail the seas and windmills to grind grain. The sun has provided warmth during the day and helped kindle fires to last into the evening. But over the past 500 years or so, humans increasingly turned to cheaper, dirtier energy sources, such as coal and fracked gas.

Now that we have innovative and less-expensive ways to capture and retain wind and solar energy, renewables are becoming a more important power source, accounting for more than 12 percent of U.S. energy generation. The expansion in renewables is also happening at scales large and small, from giant offshore wind farms to rooftop solar panels on homes, which can sell power back to the grid. Even entire rural communities (in Alaska, Kansas, and Missouri) are relying on renewable energy for heating and lighting.

As renewable use continues to grow, a key goal will be to modernize America’s electricity grid, making it smarter, more secure, and better integrated across regions.

Dirty energy

Nonrenewable, or “dirty,” energy includes fossil fuels such as oil, gas, and coal. Nonrenewable sources of energy are only available in limited amounts. When we pump gas at the station, we’re using a finite resource refined from crude oil that’s been around since prehistoric times.

Nonrenewable energy sources are also typically found in specific parts of the world, making them more plentiful in some nations than others. By contrast, every country has access to sunshine and wind. Prioritizing renewable energy can also improve national security by reducing a country’s reliance on exports from fossil fuel–rich nations.

Many nonrenewable energy sources can endanger the environment or human health. For example, oil drilling might require strip-mining Canada’s boreal forest; the technology associated with fracking can cause earthquakes and water pollution; and coal power plants foul the air. To top it off, all of these activities contribute to global warming.