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On What is the Greenest Source of Electricity?

I'll give it a read.  Should know more about it

April 14, 2014    View Comment    

On What is the Greenest Source of Electricity?

But at what cost?  By that measure solar will dwarf all comers.  I really don't know much about OTEC.  But surely its lack of traction currently implies it struggles to be commercial?

April 14, 2014    View Comment    

On What is the Greenest Source of Electricity?

 

Yep, I guess I was trying to write something basic about the subject for my readers (at my blog).  I think the hypocrasy of my comment was probably a reaction to the fact I expected someone to make such a comment about nuclear. Point taken, no offense intended.  Lindsay

 

 

April 14, 2014    View Comment    

On What is the Greenest Source of Electricity?

Hey Bob, when I do get around to opening a nuclear vs renewables can of worms I'm really going to open it.  I actually think generalisation on the topic leaves much to be desired.  Geography, politics and current grid mix dictate very different attractiveness for competing technolgies

April 14, 2014    View Comment    

On What is the Greenest Source of Electricity?

Hey Robert, I'd say some of the other technologies actually deserve far greater caveats.  Solar PV are reasonable constrained in the 20-150 g range.  Natural gas, oil and coal all vary more at an absolute level.  And as you know quite well the carbon neutrality of biopower really depends a lot on the rotation speed of the biomass and its inputs. To be honest this was more of a beginners primer.  The actual study is pretty decent.

April 14, 2014    View Comment    

On Building China: The Role Of Cement In China's Rapid Development

The per capita graph nails it for me.  Helps explain why when you do consumption based figures for China construction clocks in at 30-35% of emissions when in most countries its 10-15%.  Great read!

March 5, 2014    View Comment    

On Daniel Yergin: Looking Back and Forward at Big Trends in Energy

About time you had a column.  Much easier to keep up with your stuff this way!!

February 25, 2014    View Comment    

On The Ultimate Beginner's Guide to Energy Saving Light Bulbs

Yep, can't cover them all ;-)  This is one of the reasons they are such a no brainer for poorly ventilated halogen spots (that always overheat and blow).  A little caution.  In the UK there have been some studies showing a large number of low end LEDs not meeting their lifetime claims.  I'm quite happy to pay the extra £ or two for a proper philips, osram . . 

February 3, 2014    View Comment    

On The Ultimate Beginner's Guide to Energy Saving Light Bulbs

Cool chart.  I like it particularly because it looks like the actual commercially available versions.  You often see the lab figues only to be annoyed when the shop version is 'just' 80 lm/watt

February 2, 2014    View Comment    

On If We Could See Carbon Dioxide, Would We Take it More Seriously?

Our carbon tax was very well designed, and will now be repealed.  As an Australian that likes the ocean I find this very sad.  Tony loves the Ocean, I wish he would act like it

January 28, 2014    View Comment    

On China's Per Capita CO2 Emissions Are Now Greater Than Europe's

The thing I always find remarkable is the post 2000 boom.  I know about the construction, export and power booms, but the numbers still always seem remarkable:

Glen Peters does indeed quantify the outsourcing.  From memory it is about 1.5 Gt CO2 total, 400 Mt for both EU27 and the US

January 22, 2014    View Comment    

On Why Germany's Nuclear Phase Out is Leading to More Coal Burning

Yep, an all the current exposure to Qatar LNG prices means, together with cheap US coal, continues to put pressure on nat gas plants.  Every time they close another brand new gas plant you have the feeling more and more coal is being locked in.  I see the coal/gas price differential as the main player

January 20, 2014    View Comment