The electricity produced in the generator reaches about 25 thousand volts. In the plant that voltage is raised to 400,000 volts so that electricity can travel long distances through high voltage cables and then through transformers that reduce the voltage, arrives in our homes, schools, industries, shops, offices, etc. Nuclear power plants use nuclear – atom-to produce heat that turns water into the steam required to move the turbines and generators. Other plants take advantage of the hot water or the steam from the interior of the Earth (geothermal energy), without using fossil fuel or nuclear (uranium). What are the electric transmission systems? One of the major problems of electricity is that it cannot store is, but that it should be transmitted and used at the same time that is generated. This problem is not resolved with the use of accumulators or batteries, as those used cars and photovoltaic systems, therefore are only capable of keep small amounts of energy and for a very short time. Conserving electricity-producing large hydroelectric and thermoelectric plants is a challenge for science and technology.
In some places, the surplus of electric power or solar energy profited for pumping water to reservoirs or dams located at a certain height; the water is then used to move turbines and generators, as it is done in hydroelectric plants. As soon as there is electricity in plants, a vast network of cable lines and interconnected to the length and breadth of the country, are responsible for getting it, almost instantly, to all places of consumption: households, factories, workshops, shops, offices, etc. Thousands of workers monitored day and night that failure will not occur in service; When they occur, they attend, as soon as possible, repair the lines to restore power. For this purpose, there are centers of monitoring, strategically placed, to maintain permanent vigilance throughout the network. At times, the winds, rains and rays, among other causes, affect the transmission lines, which must be checked and repaired by technicians, either in cities or in the field.