Innovations made over the past years in the energy sector have led to dramatic productivity increases, taking companies to a whole new level of growth. Similar to the increase in use of wireless technology that has contributed to changes in the world of telecommunications. Additionally, smartphone and PCs carrying tiny chips have changed the world of consumer-electronics and audio devices like the iPod have drastically revolutionized the way in which music is enjoyed. Liquid filled transformers from companies like Elgin Industries are filled with oil and allow transportation of energy from one corner of the world to another. They are the major players in the production of electricity used in our homes. Many years have passed that shed light on the innovation of how we're using natural resources in the US. Some of the largest innovations include the introduction of unconventional gas, electric vehicles, advanced ICE, LED lighting and solar photovoltaic (PV) and coal.