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Introduction

Tidal power is an increasing unexploited renewable source of energy that mainly based on lunar gravitation. Whereas the potential of the hydroelectricity of Tidal power has been in existence for a longer period compared to dams and lakes, and are costly due to construction of massive structures in hard saltwater regions. The main tidal energy project of the US is at Annapolis Royal and has massive benefits to the region. The discussion will highlight the history, nature, current, and future use of Tidal power in North America.

Discussion

The power stored in tides has been in existence for centuries and the most first tidal mills records dates back to the eighteenth century. Other records documents that Tidal power originated from Europe and Atlantic coast of North American where tide mills were used to produce electricity. The flowing water was stored in massive ponds and the movement of tides turned the waterwheels, which utilized mechanical energy generated to for grain milling. The earliest tide mills occurred during the Middle ages and during the Roman times and in the 19th century, the process of utilizing running water and turbine spinning for electricity production was introduced in America and Europe, (Hardisty 52). During this period, the tidal mills were primarily utilized to grand grains and had similar designs with the conventional water mills except the fact that they did not use reservoirs and dams. Similarly, the industrial revolution accelerated power demands and tidal energy could not meet the demand; therefore, the development of cheap fossil fuels and other power production means that provided access to generation of power replaced tidal power. Therefore, the existing Tidal mills and other pre-industrial water mills lost their value as power production means. In the modern times, the demand for renewable and non-pollutant energy production means as well as the increased prices of fossil fuels had triggered the renewed interest of using tidal energy.

In the US, tidal energy utilizes the ocean tides movement power for energy production, and thus, tapping of tides for energy production occurs in two different ways, first, in changing levels of the sea – a phenomenon that allows rising and falling tides on shorelines. Secondly, tidal energy can be exploited through turbines sinking to the floor of the sea whereby fast-moving water currents turn blades of the generator as wind does to wind turbines.

Tidal power is renewable energy as the tides movement is on a predictable routine schedule based on the Sun, Moon, and Earth’s orbit and cannot be exhaustible. Even though, tidal power is free of carbon, it is not environmental secure because concerns over the shoreline health and aquatic environment ruins the clean power source – older technology of tidal barrage can destroy aquatic life populations.

Traditionally, massive systems of barrage prevailed in the of tidal energy project. However, because of high evident unhealthy environmental and economic challenges with the tidal power technology, investigations into the tidal power field had a shift from systems of barrage to tidal turbines current in the recent years. This modern technology has fewer environmental challenges than the tidal barrages because the turbines on the offshore water current cuts the necessity of building water reservoirs for capturing tides along environmental delicate coastlines.

Although, harnessing tidally drive currents of the coastal waters cannot product as much power as the barrage style equipments, the technology still has some hope for the North Americans. This is because the technology is rapidly developing and growing with various test projects developing all over the world. For instance, the technology is evolving in various nations such as Canada, France, Europe, and the entire United States. North America now owns and operates its own Annapolis tidal energy project that provides energy for various purposes. For instance, power from the tidal plant is uses for industrial operations, lighting homes, and other purposes, (Hardisty 52). The plant generates much of the energy of the country and has about twenty megawatts capacity and an everyday output of about 80-110 MGW hours based on the speed of the tides. The station presently serves as a seasonal center of interpretation accessible to the public, where visitors learn a lot about the production of the station, its origin and the Fundy Bay Power.

Even though, not broadly used in utilized, tidal energy in North America has potential for future production of electricity for the nation. This is because tides are increasingly predictable as compared to solar energy and wind powers. Similarly, among the renewable power sources, tidal energy has few environmental and health hazards compared to other sources. In the contemporary world, various technological developments and advancements, in design – such as tidal power dynamics and tidal lagoons – and technology of turbines – such as axial and cross flow turbines – suggests that complete tidal energy availability may be somehow increased that earlier predicted. Similarly, economic and ecological costs may be reduced to competitive levels with other sources.

Though increasingly fundamental and readily available to various global nations, tidal energy has traditionally experienced various increased cost challenges and few sites availability that have high ranges of tides of tidal flow velocities, therefore, limiting the total availability of tidal power. Similarly, tidal power experiences various constraints in becoming the main source of power in the modern world. First, the tidal energy potential entire relies on the tides flow rates that are different for various locations. Research shows that little energy is generated where few turbines are installed and many turbines interferes with the flow.

Despite the challenges, recent focus on the tidal power potential to produce energy and minimize shoreline and aquatic life effects shows that tidal power plant will soon replace other renewable power sources as the preferred energy production methods. This is because there is a lot of unexploited tidal power in waters across the globe, for instance, North American waters alone hold about 48TW/year untapped tidal power that can be increasingly crucial in economic production.

Conclusion

In conclusion, therefore, tidal power has a potential to produce energy for domestic and international use and has minimal environmental impacts compared to other renewable sources. Given a change it can replace all other sources of energy in the world and provide a cheap and available energy for the world.

Works cited

Hardisty, J. The Analysis of Tidal Stream Power. Chichester, UK: Wiley, 2009. Print.