The State Grid Corporation of China covers 25 provinces, municipalities and autonomous regions, while the China Southern Power Grid Co.

FORBES: Cracking China's Power Sector

All told, electricity demand in these regions is likely to exceed supply by an estimated 19 million kilowatts (kW) in the summer, according to estimates by regional power distributor East China Grid Company.

FORBES: China Braces for Blackouts

In 2007, nearly one-third of all the wind turbines in China were deliberately idled because a saturated power grid lacked spare capacity to carry any electricity the remote wind farms would have produced to consumer markets.

FORBES: Transmission Bottlenecks Bad News for Renewable Energy

From January to September, the China State Grid purchased 2.48 billion kilowatt hours of photovoltaic power, up 537% from the previous year.

FORBES: China's Government To the Rescue As Solar Crisis Deepens

The power stations frantically being built in China to feed the country's new electricity grid will be relatively efficient and thus less polluting than older coal plants around the world.

ECONOMIST: What is good news for miners is bad news for the environment

Wim Elfrink, a Dutchman living in India in charge of Cisco's booming global services business, talks about using the Internet to collapse the cost of U.S. medicine by employing Malaysian doctors or making China's urban electrical grid more efficient with an intelligent Cisco data network controlling the power.

FORBES: Page 2 of 2