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It's a decision based on efficiency of power transmission.

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9y ago

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What happened after they rejected Nikola Tesla?

Tesla put up his own company where he made alternate current which lights the whole earth.


How does the process of back feeding electricity work in a power grid system?

Back feeding electricity in a power grid system occurs when excess electricity generated by a consumer's own power source, such as solar panels or a generator, is sent back into the grid. This process involves a bi-directional meter that measures the flow of electricity in both directions, allowing the consumer to receive credit for the excess electricity they contribute to the grid.


What are the benefits of building your own wind turbine?

There are some benefits to building your own wind turbine. The biggest two are being able to generate your own electricity, thus not having to pay the power company for it, and any excess power you generate the power company will buy it from you as they can always use it on their grid.


Why is power produced by a grid-tied inverter used by localized loads before the power produced by the utility?

It deals with Ohms Law and an understanding of the power Network and resistance. First, Resistance - Electricity & Electrical Power always seeks the path of lowest resistance. Second, Ohms Law - V=I/R (V is Voltage, I=Current in Amps, and R = Resistance in OHMs). Although, we normally don't think of resistance in such high-voltage, high current applications as the public electric grid network, it is a significant power to the transmission of power to our homes (from the generator stations). Even power generation plants and batteries have a known internal resistance, and the transmission lines, even at such high voltage have a known resistance (impedance). (An example of this is when you start your car with your lights on, the headlights dim as the battery has a finite amount of current (because of it's internal resistance), and the voltage starts to drop (which can be shown in the dimming of the headlights). Same thing within the home, just at another scale. Although all our homes are connected to the power grid at 00, 000,or 0000 gauge wire (sometimes higher), there is still a known resistance when you add up the miles to the power generator, and if someone can create a localized power source that is AC-Synchronized to the grid, then that amount of energy will be local to household appliances and (providing it has enough supply current to meet the demand without a significant voltage drop), then the majority (or all, depending upon situations) of the power will be delivered via the home network to home devices as the output will be stronger than the power delivered by the distributed grid network. Another way to think about it is if you imagine tubes of water for electrical wires and electrical power... The thin tubes of the network will deliver to the house, but it's not as efficient of a direct connection that you would have by running your own water within your own walls and either your walls run out of water and the grid starts up again, or you dont' use enough power, and it slowly starts to dump out into the grid (as long as the voltage is a fraction of a volt or more higher than the grid (turning the meter backwards).


What is off the grid?

Off the grid is a term that is commonly used to describe a home that is off of the main energy grid. In other words, they are homes that provide their own energy from alternative sources and do not rely on power companies. Some alternative home energy sources that people are using to get off the grid can include solar panels and wind turbines.


What is off grid?

Off the grid is a term that is commonly used to describe a home that is off of the main energy grid. In other words, they are homes that provide their own energy from alternative sources and do not rely on power companies. Some alternative home energy sources that people are using to get off the grid can include solar panels and wind turbines.


Is there still current in the overhead wires that lead to a house when the house electricity is off?

Assuming there is not a "power outage" to all houses in the area (otherwise known as a "power cut") then the answer is: Yes, the potential (voltage) is still in the overhead wires that lead to a house when the house electricity is only turned off at its own main switch inside the main breaker box.


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Off the grid is a term that is commonly used to describe a home that is off of the main energy grid. In other words, they are homes that provide their own energy from alternative sources and do not rely on power companies. Some alternative home energy sources that people are using to get off the grid can include solar panels and wind turbines.Read more: http://wiki.answers.com/What_is_off_the_grid#ixzz1gGeolgFI


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