6.Hydroelectricity is generated by hydro power, production of usable power through the use of flowing water (gravitational force on falling water). The hydroelectric complex takes energy to build, but once constructed produces no direct waste. Hydro power is popular and can be installed in small rivers or streams and creates little to no environmental effect or disruption to fish migration. Water wheels are used most often over a dam to generate energy.
7.Wind Power converts wind energy into a usable form through turbines, wind into electricity of mechanical energy. Large scale wind farms are connected to local power transmission network with small turbines to provide electricity. Wind farms are located on agricultural land or grazing areas and have one of the lowest environmental impacts.
8.Solar Power harness the sun’s energy to produce electricity. Solar cells are more efficient, transportable, and flexible. Solar installations are expanding and are becoming an economically viable option.
9.Wave Power is the transport of energy by surface ocean waves. Electricity generation, water desalination, pumping water into reservoirs. Wave energy is difficult to harvest because of the unpredictability of the ocean and wave direction. Wave power systems use floating buoyed devices to generate energy through a snaking motion of mechanical movement from the wave’s peaks and troughs. The rise and fall of the waves moves the buoy-like structure creating mechanical energy which is converted into electricity and transmitted to shore over a submerged transmission line.
10.Tidal Power is generated though tidal stream generators or by barrage generation. Tidal generators are more environmentally friendly and less impactful on ecosystems, they are turbines that rotate underwater and are moved through dense water. Tides are more predictable than wind and solar energy. Tidal power derives from the relative motions of the earth-moon system and is a combination of the earth’s rotations. Tidal energy farms are “wind farms underwater”.