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Feb 8, 2013

'Game changer': renewables now cheaper than coal, gas

New analysis from Bloomberg New Energy Finance concludes that renewables are already cheaper than new-build coal and gas in Australia. And gas may not even be needed.

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New analysis from research firm Bloomberg New Energy Finance has concluded that electricity from unsubsidised renewable energy is already cheaper than electricity from new-build coal and gas-fired power stations in Australia.

The modeling from the BNEF team in Sydney found that new wind farms could supply electricity at a cost of $80/MWh — compared with $143/MWh for new build coal and $116/MWh for new-build gas-fired generation. These figures include the cost of carbon emissions, but BNEF said even without a carbon price wind energy remained 14% cheaper than new coal and 18% cheaper than new gas.

“The perception that fossil fuels are cheap and renewables are expensive is now out of date,” said Michael Liebreich, chief executive of Bloomberg New Energy Finance. “The fact that wind power is now cheaper than coal and gas in a country with some of the world’s best fossil fuel resources shows that clean energy is a game changer which promises to turn the economics of power systems on its head,” he said.

2012-30 levelised cost of energy in Australia (real 2012 AUD/MWh)

So why do renewables need support mechanisms such as the renewable energy target? Because new-build renewables have to compete with existing plant, BNEF says, and the large-scale renewable energy target is essential to enable the construction of new wind and solar farms.

The study also found Australia’s largest banks and lenders are unlikely to finance new coal without a substantial risk premium due to the reputational damage of emissions-intensive investments — if they are to finance coal at all. And new gas-fired generation is expensive as the massive expansion of Australia’s liquefied natural gas xport market forces local prices upwards. The carbon price adds further costs to new coal and gas-fired plant and is forecast to increase substantially over the lifetime of a new facility.

BNEF analysts also conclude that, by 2020, large-scale solar photovoltaics will also be cheaper than coal and gas when carbon prices are factored in.

In fact, it could be sooner than that: companies such as Ratch Australia, which owns coal, gas and wind projects, say the cost of new-build solar PV is already around $120-$150/MWh and falling. So much so it’s considering replacing its ageing coal-fired Collinsville power station with solar PV. The solar thermal industry predicts their technologies to fall to $120/MWh by 2020 at the latest.

The Bloomberg analysis says the Australian economy is likely to be powered extensively by renewable energy in the future and that investment in new fossil-fuel power generation may be limited.

“It is very unlikely that new coal-fired power stations will be built in Australia. They are just too expensive now, compared to renewables,” said Kobad Bhavnagri, head of clean energy research for Bloomberg New Energy Finance in Australia. “Even baseload gas may struggle to compete with renewables. Australia is unlikely to require new baseload capacity until after 2020, and by this time wind and large-scale PV should be significantly cheaper than burning expensive, export-priced gas.

“By 2020-30 we will be finding new and innovative ways to deal with the intermittency of wind and solar, so it is quite conceivable that we could leapfrog straight from coal to renewables to reduce emissions as carbon prices rise.”

*This article was originally published at RenewEconomy

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