The Forum > Article Comments > Power policy running on wind and sun > Comments
Power policy running on wind and sun : Comments
By Barry Cohen, published 25/5/2006Labor party zealots such as Anthony Albanese and the Left have never had any real energy options.
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The intermittent output of wind generators has to be backed up by other generators in the system which means that "megawatt hour for megawatt hour" wind does not displace other generation. The coal saved is 40% or less of the amount consumed by a coal fired power station to generate 1 MWh.
The wind industry and its often uninformed but well-meaning environmentalist supporters, often claim that wind does not need this backup. State politicians make extravagant claims for CO2 savings that are often based on 100% displacement of coal. Either they are poorly advised, or they know the facts, but will not let them get in the way of the naive green vote.
In the future, large capacity battery and other technologies might overcome the intermittent problem with wind but they will probably be expensive and not competitive with emerging low emissions coal generation.
Wind generation would not be viable without the consumer subsidies provided by the MRET and proposed similar state schemes. Under MRET the electricity distribution companies have to accept wind output, despite its high cost and variability, or pay a substantial penalty.
Renewable energy systems such as direct solar hot water, hydro, tidal impoundment and geothermal, include energy storage and in some cases may be far more environmentally friendly and cost-effective for consumers than wind. Pity we did not get a proper debate about it, before being lumbered with wind "because it is a mature technology".
Hopefully, the forthcoming debate on nuclear electricity generation will be focused on facts and warts and not corporate PR and uninformed overstatement. At least we will get an informed debate before the event, which we did not get with wind