NewScientist’s January 28 issue is likely to unsettle clean energy advocates – but it is worth the read.
The cover article, “Power paradox: Clean might not be green forever,” posits that even renewable energy can warm the planet, and eventually change climate, if we continue to ratchet up power production to (more…)
A reader points out that in talking about utility scale solar, only mature technologies are used — usually 20 to 30 years mature or more. He observes how long it’s taken PV to be seriously considered for plants over 10mW. But he goes on to talk about the Stirling Dish System, noticing that the system holds the efficiency world record for sun to grid electricity at 31.5%, and has (more…)
Here is a startling fact: US power plants waste more energy than many countries use, including advanced economies like that of Japan. The wasted energy is in the form of heat thrown off when power plants produce electricity.
This is one of the points being brought to light by the International District Energy (more…)
Often when going to the beach the common complaint is that the ocean is too cold. They appear to be warming up a bit. The upper layer of Earth’s ocean has warmed since 1993, indicating a strong climate change signal, according to a new international study co-authored by oceanographer Josh Willis of NASA’s Jet Propulsion Laboratory, Pasadena, Calif. The energy stored is enough to power nearly 500 100-watt light bulbs for each of the roughly 6.7 billion people on the planet.
“We are seeing the global ocean store more heat than it gives off,” said John Lyman, an oceanographer at the National Oceanic and Atmospheric Administration’s (NOAA) Joint Institute for Marine and Atmospheric Research, who led the study that analyzed nine different estimates of heat content in the upper ocean from 1993 to 2008.