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Smart Grid Technology for Smart Cities

[This Beijing dispatch center controls most of China’s ultrahigh-voltage lines and monitors renewable energy use - State Grid Corp. of China]

- What is the Smart Grid?

"Grid" refers to the power grid, the network of transmission lines, substations, transformers, etc. that carry electricity from a power plant to your home or business. It's what you plug in when you turn on the light switch or power up your computer. Our current electrical grid was built in the 1890s and continues to improve as technology advances every decade. Today, it consists of more than 9,200 generator sets generating more than 1 million megawatts, connected to more than 300,000 miles of transmission lines. While the grid is considered an engineering marvel, we are extending its patchwork nature to its capacity. To move forward, we need a new kind of grid, one built from the bottom up, to handle the proliferation of digital and computerized devices and technologies that depend on it — and to automate and manage the ever-increasing complexity of electricity Sex and needs in the 21st century. 



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