Hydroelectricity Advantages of hydroelectricity
The way the electricity is produced does not harm the environment as much as fossil fuels like oil or coal. Hydroelectricity is very powerful, safe and produces no waste. Hydroelectricity can be made very quickly. This makes it useful for times when demand for electricity is high. Also hydroelectricity can not run out as long as there is a good water supply. Once the dam is built the electricity is free, no waste or pollution produced and electricity can be generated constantly.