Old Carbon

Here is a short elevator pitch video from NASA about global warming: The interesting thing is that it talks about “old carbon”. It explains that the carbon stored in coal was stored there hundreds of millions of years before. And we are releasing it now. It does not discuss the issue from the point of … [Read more…]

David Roberts On Solar And Wind Limits

David Roberts discusses the question if there are any economic limits for solar and wind grid penetration. In that article he discusses a “rule of thumb” recently developed by Jesse Jenkins and Alex Trembarth, authors working with the “Breakthrough Institute”. Their rule of thumb is that maximum grid penetration is equal to capacity factor. That … [Read more…]


That is of course the title of the seventh James Bond novel by Ian Fleming published in 1959. But in this post I want to talk about the plot of the 1964 film. In both the book and the film the villain attacks the United States gold reserve at Fort Knox. But there is a difference. In … [Read more…]

Renewable Desalination

That’s the name of a website (renewabledesalination.com). I found it over this tweet by Michael Liebreich, who likes the idea. The website explains real life experience with using solar power for desalination in Baja California Sur, Mexico. One of the advantages of doing this: Once renewable energy gets to large scale, there will be many … [Read more…]