*be sceptical - take nothing for granted!
Unless otherwise indicated all photos © Richard McKie 2005 - 2019

Who is Online

We have 282 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

Romania

 

 

In October 2016 we flew from southern England to Romania.

Romania is a big country by European standards and not one to see by public transport if time is limited.  So to travel beyond Bucharest we hired a car and drove northwest to Brașov and on to Sighisiora, before looping southwest to Sibiu (European capital of culture 2007) and southeast through the Transylvanian Alps to Curtea de Arges on our way back to Bucharest. 

Driving in Romania was interesting.  There are some quite good motorways once out of the suburbs of Bucharest, where traffic lights are interminable trams rumble noisily, trolley-busses stop and start and progress can be slow.  In the countryside road surfaces are variable and the roads mostly narrow. This does not slow the locals who seem to ignore speed limits making it necessary to keep up to avoid holding up traffic. 

Read more ...

Fiction, Recollections & News

Preface - The Craft

 

 

A Note about Witches

In fairy-tales, witches always wear silly black hats and black cloaks, and they ride on broomsticks.
But this is not a fairy-tale.  This is about real WITCHES
REAL WITCHES dress in ordinary clothes and look very much like ordinary women.
They live in ordinary houses and they work in ORDINARY JOBS.
That is why they are so hard to catch.

Roald Dahl - The Witches

 

The Craft is an e-novel about Witchcraft in a future setting.  It's a prequel to The Cloud, set initially at the turn of 2069-2070 after The Great Famine.

It has adult content.  

As with all fiction on this Website stories evolve from time-to-time.   Unlike printed books that have distinct editions, these stories morph and twist so that returning to them after a period may provide a new experience.

Click here to Read more...

 

 

 

Opinions and Philosophy

Energy woes in South Australia

 

 

 

 

South Australia has run aground on the long foreseen wind energy reef - is this a lee shore?

Those of you who have followed my energy commentaries published here over the past six years will know that this situation was the entirely predictable outcome of South Australia pressing on with an unrealistic renewable energy target dependent on wind generated electricity, subsidised by market distorting Large-scale Generation Certificates (LGCs) (previously called RECs in some places on this website - the name was changed after their publication).  

Read more ...

Terms of Use                                           Copyright