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Hydroelectricity

 

Hydro-electricity is presently the largest contributor to renewable energy worldwide; in Australia and particularly in NSW.

 

Hydro-electricity also is more desirable than wind generation because of a higher capacity factor and ability to produce power on demand.

 

But hydro-electricity is resource constrained as it is difficult to build new dams in the developed countries that are presently heavy fossil fuel consumers.

Dams flood private property and/or National parks and have many self-interested and environmentally concerned opponents.  Hydro-electric schemes interfere with natural river flows and related wildlife, particularly when they involve extensive inundation.  It has become politically very difficult to construct new dams in Australia, even when the potential energy resource is significant. 

Nevertheless in developing countries like China, India and Vietnam there are large hydro-electricity resources that remain unexploited.

 

 

 

 

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Travel

Russia

 

 

In June 2013 we visited Russia.  Before that we had a couple of weeks in the UK while our frequent travel companions Craig and Sonia, together with Sonia's two Russian speaking cousins and their partners and two other couples, travelled from Beijing by the trans-Siberian railway.  We all met up in Moscow and a day later joined our cruise ship.  The tour provided another three guided days in Moscow before setting off for a cruise along the Volga-Baltic Waterway to St Petersburg; through some 19 locks and across some very impressive lakes.

Read more: Russia

Fiction, Recollections & News

The U-2 Incident

 

 

 

In 1960 the Russians shot down an American U-2 spy plane that was overflying and photographing their military bases.  The U-2 Incident was big news when I was in High School and I remember it quite clearly. 

The Incident forms the background to Bridge of Spies a 2015 movie, directed by Steven Spielberg and starring Tom Hanks and Mark Rylance from a screenplay written by Matt Charman together with Ethan and Joel Coen that centres on these true events. 

Spielberg and the Cohen Brothers.  Who could miss it?

 

 

Read more: The U-2 Incident

Opinions and Philosophy

Carbon Capture and Storage

 

 

(Carbon Sequestration)

 

 

The following abbreviated paper is extracted from a longer, wider-ranging, paper with reference to energy policy in New South Wales and Australia, that was written in 2008. 
This extract relates solely to CCS.
The original paper that is critical of some 2008 policy initiatives intended to mitigate carbon dioxide emissions can still be read in full on this website:
Read here...

 

 

 


Carbon Sequestration Source: Wikimedia Commons

 

This illustration shows the two principal categories of Carbon Capture and Storage (Carbon Sequestration) - methods of disposing of carbon dioxide (CO2) so that it doesn't enter the atmosphere.  Sequestering it underground is known as Geosequestration while artificially accelerating natural biological absorption is Biosequestration.

There is a third alternative of deep ocean sequestration but this is highly problematic as one of the adverse impacts of rising CO2 is ocean acidification - already impacting fisheries. 

This paper examines both Geosequestration and Biosequestration and concludes that while Biosequestration has longer term potential Geosequestration on sufficient scale to make a difference is impractical.

Read more: Carbon Capture and Storage

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