*take nothing for granted!
Unless otherwise indicated all photos © Richard McKie 2005 - 2015

Who is Online

We have 92 guests and no members online

Translate to another language

Article Index

 

 
 
 

Nuclear Electricity

 

Nuclear power is a significant competitor to renewables generated electricity in many countries. Conventional nuclear power (fission) is growing rapidly and fusion sill holds promise for the future (as the resource is effectively limitless).

 

In much of the world nuclear generated electricity is already competitive with fossil fuels and less costly than wind or solar energy. Nuclear energy is expected to replace a modest proportion of fossil fuel generated electricity in many large economies during the first half of this century[28]. Prominent amongst these are China and India[29].

 

For example, the Republic of (South) Korea produced 343 TWh of electricity in 2004[30] of which 63 per cent came from conventional thermal sources, mainly coal, 36 per cent came from nuclear power, and a small amount came from hydro-power stations. But nuclear power is planned to steadily increase its share of the country’s net electricity generation. Korea already has four operating nuclear power stations containing a total of 20 nuclear reactors with a total capacity of 17,716 MWe. This exceeds the total electricity generation capacity in NSW[31].

Six additional reactors are under construction and a further six scheduled for completion by 2021 (total 14,800 MWe capacity). As a result, Korean manufacturers have developed proprietary IP and are beginning to market reactors internationally (with a target of 80 reactors exported by 2030)[32]. Similarly another major NSW coal customer Taiwan has two new 1,350 MWe reactors due to come on line this year.

A carbon mitigation strategy that attempts to achieve a zero increase in CO2emissions worldwide by 2030 (while not constraining economic growth) would need to achieve a very much faster growth in renewables than is presently the case (or is achievable in practice).

 

Implicit in the EIA projected worldwide growth in coal and gas consumption is the assumption that many new thermal power stations will be built. Many existing thermal power stations worldwide will also need replacement in this time frame.

 

Worldwide, the only practical and available alternative in a 20 year time-frame may be a very much faster growth in nuclear energy. If reliable, proven designs are adopted, allowing approvals to be streamlined, nuclear stations could have similar lead times to thermal stations.

 

A relatively modest threefold increase in present nuclear generation worldwide would meet the entire projected world electricity growth to 2030 and together with projected growth in renewables, return World fossil fuel consumption for electricity generation to 2006 levels.

 

 

World Electricity Projections to 2030 Present and with 300% Nuclear

 

 

image006
Source: IEA ibid; and the author

 
 

 

Simply replacing conventional thermal stations with nuclear stations as they retire may obviate the need to use the marginal renewables such as wind and solar when they are uneconomic without subsidy.

The following graphic shows the relative scale of energy flows in Australia.
 

image033

 

The dominance of coal and uranium are immediately apparent, as is the very small contribution presently made by renewables. The total of the carbon in the coal, gas and oil represents the Australian contribution to worldwide CO2 emissions.

The domesticity consumed component of this is so small that the domestic achievement of 20% renewables would be overwhelmed by a fractional increase in coal exports, as a result of the growing world demand for coal-fired thermal electricity.

 

A cessation of Australian coal exports might make a greater contribution to reduced world CO2 release. This would result in an increase in the world coal price, followed by accelerated development of coal projects in other countries to meet the growing demand.

This may be marginally effective as a higher coal price could be expected to accelerate the adoption of nuclear power, particularly by major NSW coal customers[33]; all of which have a high and growing nuclear capacity. But such a policy would have a serious short to medium term impact on the Australian economy (particularly in NSW[34] and Qld). Correspondingly, a relatively small increase in the export of uranium oxide would achieve greater reduction worldwide carbon emissions than can be achieved by adopting renewables domestically.

 

 

 

 

 

Add comment


Security code
Refresh


    Have you read this???     -  this content changes with each opening of a menu item


Travel

Morocco

 

 

In August 2008 we visited Morocco; before going to Spain and Portugal.  We flew into Marrakesh from Malta and then used the train via Casablanca to Fez; before train-travelling further north to Tangiers.

Read more ...

Fiction, Recollections & News

Les Misérables - The Musical

 

The musical Les Misérables has returned to Sydney.   By now we have both seen several versions.    

But we agreed that this new version is exceptional, with several quite spectacular staging innovations and an excellent cast of singers with perhaps one exception who was nevertheless very good.

Despite an audience that was obviously very familiar with the material (if I'm to judge by the not so sotto voce anticipatory comments from the woman next to us) the production managed to evoke the required tears and laughter in the appropriate places.  The packed theatre was clearly delighted and, opera style, the audience shouted approval at and applauded several of the vocal performances, some were moved to a standing ovation at the end.

 

 

Read more ...

Opinions and Philosophy

Losing my religion

 

 

 

 

In order to be elected every President of the United States must be a Christian.  Yet the present incumbent matches his predecessor in the ambiguities around his faith.  According to The Holloverse, President Trump is reported to have been:  'a Catholic, a member of the Dutch Reformed Church, a Presbyterian and he married his third wife in an Episcopalian church.' 

He is quoted as saying: "I’ve had a good relationship with the church over the years. I think religion is a wonderful thing. I think my religion is a wonderful religion..."

And whatever it is, it's the greatest.

Not like those Muslims: "There‘s a lot of hatred there that’s someplace. Now I don‘t know if that’s from the Koran. I don‘t know if that’s from someplace else but there‘s tremendous hatred out there that I’ve never seen anything like it."

And, as we've been told repeatedly during the recent campaign, both of President Obama's fathers were, at least nominally, Muslim. Is he a real Christian?  He's done a bit of church hopping himself.

In 2009 one time United States President Jimmy Carter went out on a limb in an article titled: 'Losing my religion for equality' explaining why he had severed his ties with the Southern Baptist Convention after six decades, incensed by fundamentalist Christian teaching on the role of women in society

I had not seen this article at the time but it recently reappeared on Facebook and a friend sent me this link: Losing my religion for equality...

Read more ...

Terms of Use                                           Copyright