Energy Grid and Energy Sources
An Energy grid is a power grid that delivers electricity from suppliers to consumers.
The energy grid is built up of high voltage electricity transmission lines that transfer from sources to demand centers, distribution lines that connect individual customers, and pipes for oil and natural 
gas. It’s infrastructure also includes facilities that turn raw natural resources into useful energy products. Primary energy sources may include nuclear energy, fossil energy (oil, coal, and natural gas) and renewable sources such as wind, solar, and hydropower. Electricity is a secondary energy source generated by the conversion on fossil, nuclear, wind and solar energy. These sources work together to flow power through our homes.
Smart Grids
A smart grid is an electric grid consisting of a network or transmission lines, substations, and transformers that deliver the electricity from the power plant to the home. However, the digital technology is not ONLY sending electricity to our homes; it is a two-way communication that also exchanges electricity along with information. The smart grid quickly changes to our electric demand. It allows newer technologies to be integrated
such as wind and solar energy production and plug in electric vehicle charging.
Pros associated with the Smart Grid:
- improved security
- lower electricity rates
- lower power costs
- renewable energy systems
- more efficient transmission of electricity
Cons associated with the Smart Grid:
- A series of failures can affect banking, communications, traffic and security
references:
energy.gov
smartgrid.gov
http://geni.org/globalenergy/library/national_energy_grid/united-states-of-america/index.shtml
http://www.netl.doe.gov/publications/press/2001/nep/chapter7.pdf
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You have explained very well about smart grid technology. If we count, smart grid advantages are numerous and it plays a significant role in electric grid modernization. It’s a cost-effective technology that gives users to manage their electricity usage and controls energy consumption. Thanks a lot for sharing such a brilliant write-up.