Cal on February 13th, 2017

Direct Current (DC) Supergrids are appearing in China, India. Europe and Brazil. Long-distance ultra-high-voltage direct-current (UHVDC) connectors are now transmitting electricity over thousands of kilometres more efficiently than AC or alternating current. China began building these transmission facilities in 2010 and is currently has one under construction that will carry 12 gigawatts (half the average power use of Spain) over 3,400 […]

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Cal on May 12th, 2015

In recent years, China has embraced coal gasification, which involves treating coal with heat, steam and oxygen to turn it into methane gas that can be sent by pipeline to cities to supply relatively clean heat and power in place of coal. Some 50 of these massive coal-to-methane plants are planned. Global investment in upstream […]

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