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How electricity works_Episode_3

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In part two, we learnt about "current wars"... ...which resulted in the electricity we use today. In this installment, we'll see how electricity has become a power Edison and Tesla might never have imagined. One [electricity] that drives entire nations and the global economy. To help us appreciate this magnitude... ...first, we'll need a way to measure it. This is a megawatt. One million watts. A megawatt hour is an amount of energy... ...needed to power up to 2700 Filipino homes for one hour. Now, if you can imagine all the homes, offices and industries around the world... takes millions of megawatts to keep them lit up and running just for one hour. This is a typical daily electricity consumption form. It shows how we generally use electricity at home... ...when we wake up... work... ...and finally back home to sleep in a given day. The important issue now is how we can ensure that the electricity we need every day... always available and affordable. For while we are making our efforts into the development of the sustainable sources of energy... ...we are still heavily rely on the limited fossil fuels. And due to the increasing awareness and demand for environmentally friendly solutions... ...we are called to be more efficient in our use of the resources which we have. What we need is a new way of looking at electricity. A new model for generating it. And a new model for managing it. A better alternative. We have already described electricity as a kind of energy and as a resource. But what if we also think of it as a commodity? Something we can buy, sell or trade. Actually, we can... ...but with some important differences. First: electricity, unlike other commodities, can't be stored... least, in amount of city's need. Which means, although it can be traded, electricity must be used as it is generated. Either you use it or you lose it. Second: electricity is an undifferentiated product. The n-user cannot determine which specific power plant supplies the electricity. And third: voltage drops when electricity is sent over too long distances. Taking these characteristics over electricity into consideration,... ...a competitive electricity market can be established... facilitate trading between power plants and buyers. A major implication of such a market is a shift in how things are done and priced. From a wholesale standpoint, large buyers like cities, distribution companies and industries... ...can calculate the megawatts they need... ...and we can now determine which power plants can supply reliably... the lowest possible cost. This wholesale market--- in a process called ''wheeling''---delivers cheaper electricity first to fulfill the buyer's needs... ...before calling more expensive options to supply. Delivery is instantaneous. Delivered just as it's generated. In this way, a transparent and efficient electricity market... ...encourages power plants to be more efficient and cost effective. And by ensuring the best costs and the best supply... ...the consumer gets the best price for the power. The industry makes efficient use of our natural resources... ...reducing wasteful use. And we make sure that the next generations enjoy the benefits of our decisions. The dream of what the world can be. A vision of better alternatives. And inspired possibilities. We have the power to make a brighter future.

Video Details

Duration: 5 minutes and 44 seconds
Country: United States
Language: English
Views: 74
Posted by: leyaku on Dec 9, 2012

How electricity works.

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