Question

Write a short note on energy needs to the future?

Answer 1

With the development in economy, energy requirements are also increasing. We have been using the natural sources of energy like petroleum, wood, fuel, natural gas etc. As the industries are growing and more production is required from the agricultural sources, energy demand is increasing. This is all due to the increase in population, that is increasing the demand for goods, industries, and transportation etc. So, energy demand is increasing in the future. With the increasing demand of energy, scientists are looking up for un-conventional ways of energies like solar energy, wind energy, geothermal energy etc. We should conserve the natural sources of energy as we need them more in the future. We should not waste energy and use conservative measure to save it like switching off light bulbs, use biogas for cooking, solar heater etc. 

@skb

Answer 2

Fossil fuel reserves are declining, sun and wind power are imperfect, and the world is looking for answers. But there's a possible solution out there: recycling energy from secondary sources. Energy "harvesting"—where incidental energy like radio waves, heat and vibrations are harnessed for power—is not a new concept, but the technology to support the idea is getting better. Just as today the kinetic force of a swinging arm can power a wristwatch, some technologists are betting that in the future pedestrians' footsteps can light a city. Much of energy harvesting's promise lies in manufacturing, where so much energy is lost to the heat, sound and vibrations of machinery. If even a small percentage of that could be captured and reused, then companies could realize significant cost savings—or so the theory goes. While manufacturers in energy-hungry Europe are already looking to invest in the technology, many American firms are less quick to see the promise in harvesting, experts said.