Alternative Energy Source: Wave Power

Wave power is among the cleanest alternative sources of energy and is both safe and renewable.

Catching the power of waves within the ocean is an extremely old concept, but only recently has it been achievable with any amount of success.

People have attempted to use wave power since at least 1890 (Source).

Today, we can now harness the power of waves to generate electricity.

Wave power is a revolutionary type of alternative energy that could help stop climate change

Great Potential

"The theoretical annual energy potential of waves off the coasts of the United States is estimated to be as much as 2.64 trillion kilowatthours, or the equivalent of about 64% of U.S. electricity generation in 2018. The west coasts of the United States and Europe, and the coasts of Japan and New Zealand, have potential sites for harnessing wave energy" (Source).

Some speculate that once the infrastructure is in place, waves could provide a reliable, steady and dependable source of electricity that may be even cheaper than wind power.

This is saying a lot because the price of solar and wind are continuing to go down. They are less expensive than energy from coal and natural gas.

Unfortunately, there isn't much investment now in tidal or wave energy. This may change in the future.

Wave Energy

How it Works

Wave energy is the method of using the ocean waves' power.

This power essentially originates from the gusts of wind that create the swells in the ocean; the wind flow originates from different various heat temperature ranges around the globe and the Earth's unequal surface area.

The waves may well seem like it moves in a single motion and path; however, the water molecules actually move within an ellipse.

This elliptical motion of water is how we obtain the wave energy.

Wave

Best Location for Wave Power

"The areas of greatest potential for wave energy development are in the latitudes with the highest winds (latitudes 40°–60° N and S) on the eastern shores of the world’s oceans (which border the western edges of the continents)" (Source).

For example, "the world’s first operational wave power generator is located off the coast of Aguçadora, Portugal, producing as much as 2.25 megawatts from three huge jointed tubes that float on the surface of the Atlantic Ocean; individual power generators are located at the tubes’ joints and activated by wave motion" (Source).

Pelamis Wave Energy Converter

The Differences Between Wave Power and Tidal Power

Waves are produced by blowing wind across the top of the water. Consequently, higher wind gusts signify larger waves.

On the other hand, tides are made from the gravitational forces of the moon and the sun, which causes the ocean to bulge.

This bulging is responsible for high and low tides. In terms of power and strength, tides remain pretty consistent compared to waves.

Also, tidal power costs slightly less to build and maintain.

Surfer

Comparison Between Wave and Tidal Power

Wave Power

  • Harnessed from waves moving along the surface of the ocean using offshore and onshore systems
  • Caused by wind
  • Intensity is affected by wind strength
  • Types of wave energy include kinetic energy
  • Continuous source of energy
  • Extremely high start-up costs to design and develop the technology required

Tidal Power

  • Harnessed from the rise and fall of sea levels using barrages, dams, tidal fences and tidal turbines
  • Caused by the gravitational pull of the moon and sun on the Earth
  • Intensity is affected by location and position of the Earth
  • Types of tidal energy include kinetic and potential energy
  • Discontinuous source of energy that is generated for about 6-12 hours at a time
  • High construction costs but low maintenance costs

Source

Diagram of renewable energy

Advantages

The benefits of wave energy are substantial.

Wave energy is definitely an abundant and environmentally friendly resource, and although not all countries have a shoreline, the combined potential output of wave power would satisfy a big portion of the electrical power requirements around the globe.

Wave power does not cause any greenhouse gases and is a form of renewable energy as we will simply never run out of waves.

Even though equipment represents a considerable financial commitment, the fuel is free of charge and never limited by geopolitical borders.

Finally, the damage to the natural environment is considered to be minimal, and thus it will help stop climate change.

Forms of Energy

Wave Power: A Promising Solution

Harnessing wave power is a promising solution for combating climate change, offering a sustainable and abundant source of renewable energy. Unlike fossil fuels, wave power generates electricity without emitting greenhouse gases, thus significantly reducing our carbon footprint. The oceans cover more than 70% of the Earth's surface, providing a vast and largely untapped resource for energy production. Wave energy is also highly predictable and consistent compared to other renewable sources like wind and solar, which can be intermittent. By investing in wave power technology, we can diversify our energy portfolio, enhance energy security, and reduce our reliance on fossil fuels. This not only helps mitigate climate change but also promotes economic growth through the development of new industries and job creation. Embracing wave power is a crucial step toward achieving a sustainable energy future and protecting our planet for future generations.

Additionally, wave power can have a minimal environmental impact compared to other energy sources. Unlike large hydropower projects that can disrupt ecosystems and displace communities, wave energy installations can be designed to coexist with marine life and coastal environments. Modern wave energy converters are built to be robust and resilient, with low visual and noise pollution, ensuring that they blend seamlessly with their surroundings. Furthermore, the development and deployment of wave power technology can stimulate innovation and investment in coastal regions, fostering local economies and creating skilled jobs. By advancing wave power, we not only contribute to reducing greenhouse gas emissions but also promote sustainable development and environmental stewardship. Embracing wave energy is a strategic move toward a resilient and diversified renewable energy future.

Further Reading and Sources


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