Colloidal silver results when the molecular structure of silver is altered. The substance is then suspended in a liquid solution.
One of the best sources of renewable, green, energy is hydroelectric energy. In fact, about 7% of the power consumption in the US is generated using hydroelectric energy. This type of energy is generated by harnessing the gravitational force of falling water. In many ways, this is not unlike the process that is used in wind turbines (using wind energy).