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
Earthquakesâbefore, during and after. An earthquake is a shaking of the Earth's crust. They strike without warning and vary greatly in severity. Earthquakes can be caused by: 1  underground volcanic forces. 2  the breaking of rock under the Earth's surface. 3  a sudden movement along an existing fault line.n earthquake is a shaking of the Earth's crust. They strike without warning and vary greatly in severity. Earthquakes can be caused by: 1  underground volcanic forces.