Most modern electricity is otherwise known as secondary energy, meaning it is a combination of fossil fuels, nuclear fuel, and renewable energy. Renewable energy sources include wind, hydroelectric, solar, and geothermal (2 Sharif). Fossil fuels cause a significant amount of pollution, which in turn causes harm to public health, loss of habitat and wildlife, and global warming emissions. Renewable energy is the safest option that only a few large companies use. Due to the population, more electricity is needed; which impacts how we can use renewable energy. Relying primarily on the weather, renewable energy is limited by our climate. For example, hydroelectric power is generated by the supply of rainwater. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essayHowever, hydroelectric power from ocean currents is the innovation of the century. Creating this energy would allow the coastal cities of Los Angeles, Miami, New Orleans and New York City to reduce their pollution levels by nearly 50%. Our Earth is 70% consumed by oceans, so there is energy waiting to be produced and cities ready to be powered (N/A 1). The speed of the waves varies substantially depending on their position. Areas with high energy resources such as the northwestern coasts of America (Alaska), southern Africa, Australia, the northern beaches of Canada and western Scotland. For ocean wave energy, the wind pushing the waves is measured in gigawatts, while the tides would be measured in terawatt-hours/year. Concluding a recent study, the EPRI (Electric Power Research Institute) states that on global coasts, energy currently produced is an astonishing 2640 TWh/year. From a realistic perspective, one TWh/year is enough energy to power 93,850 American homes each year. While energy is abundant, not all of it can be harvested due to commercial fishing and naval operations. As for the coastal shelf of the United States of America, we produce 1,170 TWh/year, which is a third of what American families use every year. Using the topography of the ocean floor, researchers are able to understand the influence weather has on ocean currents. Although currents move at a slower rate than wind, salt water is 800 times denser than air. This means that if a wave were traveling at 12 miles per hour, it would create the same amount of energy as wind blowing at 182 miles per hour. Within the Persian Gulf, if we were to take 1/1000 of its energy, we would be able to power 35% of Florida's electricity needs. Several countries, including the United States and Great Britain, are pursuing an understanding of current power. Without commercial grid turbines, researchers have difficulty creating prototypes; therefore, this is the least mature of any energy resource. Due to development over the next five to seven years a commercial network (NOAA 1) should be used. However, technical challenges have arisen, such as cavitations, marine growth and corrosion. If someone were to work on the grill, the restoration would be very detailed and extremely complex. As for maintenance, pipe maintenance could come with a potentially high price tag. The Final Environmental Impact Policy Statement for Alternative Energy Development and Production and Alternative Use of Facilities on the Continental Shelf was approved in 2007. Please note: This is just one example..