## Sunday, December 10, 2006 ... //

### Hydropower may be #1 greenhouse gas source

Normally we consider the hydropower plants to be environmentally friendly. However, when the greenhouse effect is counted as an undesirable process and when the analysis is made properly, things may look very different.

Did you think that the greenhouse gas emissions came from factories, power plants, cars, airplanes, cows, and sheep only? Think twice.

According to a fresh paper published in Taiwan, as well as similar reports released as early as in 2002, hydropower plants may be more potent sources of greenhouse gases even than oil-burning and coal-burning plants.

Organic materials are prevented from flowing down stream: they can't decompose and they cause emissions of methane and nitrous oxide. One ton of methane causes the same greenhouse effect as 21 tons of carbon dioxide while one ton of nitrous oxide causes the same greenhouse effect as 200 tons of carbon dioxide so you should better not neglect these gases if you didn't neglect CO2.

The message is very clear. If we listen to some of those politicians who are out there and if the greenhouse gases are eventually labeled as pollutants, we will have to start to exterminate all cows, sheep, and other mammals and demolish all power plants including the hydropower plants. Think twice.