This allows NUGs to receive a reasonable to excellent price for the energy they produce and ensures that energy generated by small producers won't be wasted. 1  Gas engines for IPPs, www.clarke-energy.com, accessed 11th November 2013.  2 Independent Power Producer (IPP) - Americas Generators.
An earthquake is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in size from those that are so weak that they cannot be felt to those violent enough to toss people around and destroy whole cities. The seismicity or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. At the Earth's surface, earthquakes manifest themselv
Earthquakes occur on faults. A fault is a thin zone of crushed rock separating blocks of the earth's crust. When an earthquake occurs on one of these faults, the rock on one side of the fault slips with respect to the other.