By Bruno De Wachter / Published on Thu, 2009-04-30 13:39
Rocks travelling down to the smelter produce 90 GWh a year
At the Los Pelambres opencast Copper Mine in Northern Chile, carbon free electricity is produced in a very original way. Crushed rock containing copper ore is used to generate electricity as it travels down from the high-altitude mine to the processing plant located in the valley below.
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By Bruno De Wachter / Published on Thu, 2008-01-31 08:30
Carma.org is an immediate success
Carma stands for Carbon Monitoring for Action. Carma.org is a Web tool on which you can look up the carbon emissions of all of the world’s power plants. Starting from a world map you can zoom in to find the power plant locations, and then you can click on the plants to verify their carbon intensity. Five colour codes classify them from 'clean' to 'dirty'.
The tool was launched in November and was an immediate success. It received 150,000 visitors from 187 countries in its first two days.
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By Hans De Keulenaer / Published on Thu, 2007-09-20 19:05
The incremental new capacity displaced by a project activity. The build margin indicates the alternative type of power plant (or plants) that would have been built to meet demand for new capacity in the baseline scenario.
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By Bruno De Wachter / Published on Tue, 2007-04-03 07:30
Greater than direct domestic water usage
With all the concern about carbon dioxide emissions, it is easy forget that other major environmental issues exist in the electric power sector. One of them is the use of freshwater by thermoelectric power plants (coal, nuclear, oil, steam side of CCGT power plants). Water withdrawal by thermoelectric power plants is huge, averaging about 95 litres per kWh. Coal-fired power plants with once-through cooling systems withdraw 142 litres per kWh while nuclear power plants with once-through cooling systems require as much as 175 litres per kWh.
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