Electricity generation across Australia’s five eastern states was greener last year compared with the previous 12 months despite a continued reliance on coal-fired power stations and an increase in the use of some of the largest and most greenhouse intensive coal-fired stations in the country.
The findings are part of The Climate Group’s Electricity Generation Report 2009, which reports on
electricity generation and associated emissions from coal, gas, liquid fuel and renewables. The report reveals the biggest emitting power stations in Victoria, New South Wales, Queensland, South Australia and Tasmania.
In total, power stations generated 208 million Megawatt hours (MWh) of electricity in 2009, 2.1 per cent less than 2008, and emitted 181 million tonnes of greenhouse gas, a decrease of 2.4 per cent on 2008.
The three biggest emitting power stations in 2009 were all in Victoria: Loy Yang A emitted 18.81
million tonnes CO2e, Hazelwood 16.25 million tonnes, and Yallourn W 15 million tonnes. Bayswater and Eraring in New South Wales were the fourth and fifth most polluting stations, emitting 14.92 million tonnes and 13.96 million tonnes CO2e respectively.
Growth of 11 per cent in renewable electricity generation and 8 per cent for gas meant that the
average carbon intensity of electricity fell by just more than one per cent compared with 2008, to 0.87 tonnes CO2e/MWh.
The overall share of renewables and gas remains small, accounting for 9.3 per cent and 8.0 per cent of total generation respectively (but up from 8.3 per cent and 7.6 per cent in 2008).
Electricity and emissions across the five states continues to be dominated by a relatively small
number of large coal-fired power stations: the top 20 generators of electricity were all coal-fired and accounted for more than 90 per cent of total greenhouse gas emissions. The top 10 accounted for more than 70 per cent of total emissions.
Total electricity generated from coal declined slightly, accounting for 82.3 per cent of total electricity, down from 84 per cent in 2008. This fall was largely due to less output from Liddell, Mt Piper, and Vales Point B in New South Wales.
However, electricity generation and emissions from some of the country’s most carbon intensive power stations increased last year. Of the top seven most carbon intensive power stations, six generated more electricity in 2009 – including Victoria’s Hazlewood, Yallourn W and Loy Yang B.
In South Australia, electricity generation increased at Playford B, the most carbon intensive station in all five states. In New South Wales, the most carbon intensive generator, Redbank Station, also produced more electricity than in 2008.
Rupert Posner, The Australia Director of The Climate Group said: “The report shows that the mandated targets for renewable energy are making a difference, with our
electricity becoming less greenhouse intensive.
“The fact that we generated more electricity from some of the most carbon intensive power stations means that, despite having a smaller overall market share, the carbon intensity of coal-fired electricity actually increased.
“This outcome is a clear example of why we need a price on carbon. We need to reduce our
dependence on our most greenhouse polluting power stations but without a price on carbon the
cheapest, rather than the least-polluting power stations are used first.”
The average carbon intensity of coal-fired power stations in Australia in 2009 was 1 tonne CO2 per MWh, gas was 0.57 and zero for renewables.
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