PV solar power - Era-Energy has started to present local, national and global companies developing, exploring and promoting renewable energy sources. More »
The Earth energy sources - Earth’s energy comes from the original formation of the planet and from radioactive decay of minerals. The geothermal gradient, which is the difference in temperature between the core of the planet and its surface, drives a continuous conduction of thermal energy in the form of heat from the core to the surface. More »
Hydropower, hydroelectric power or water power is power that is derived from the force or energy of flowing or falling water, which may be harnessed for useful purposes. More »
The wind power is the ability of air movement to do work. Today, wind energy turbines are used mainly for production of electricity. It is a clean and renewable energy source that can produce enough electricity to power huge areas. More »
The energy of the wind is invisible and so powerful that has allowed humans to exploit the surface of the planet long before the discovering of electricity. More »
Slaves were chained together so that if one tried to escape, it would not be as easy. He would need the whole group to escape with him. And it would be very slow. Slaves power was needed. Today we need energy for the machines that have taken the place of the “live force” – animal & human. But it seems that all of us are chained by the invisible and mighty chain called “grid” and “stations”.
