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Is wind power prohibitively expensive? Apparently not

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that’s a bloody big blade

Recently I heard retiring WA liberal senator Chris Back being interviewed, mainly on funding for Catholic schools, on ABC’s breakfast program. He was threatening to cross the floor on the Gonski package, but while he was at it he took a swipe at wind power, claiming it was heavily subsidised and not cost effective. Unfortunately I’ve not been able to find the whole interview online, to get his exact words, but as someone interested in renewables, and living in a state where wind power is prominent, I want to look more carefully at this issue.

On googling the question I’ve immediately been hit by link after link arguing that wind power is just too expensive. Is this a right-wing conspiracy? What are the facts? As I went deeper into the links – the second and third pages – I did become suspicious, as attacks on wind power spread to solar power and renewable energy in general. It seems there’s either a genuine backlash or there’s some manipulating going on. In any case it seems very difficult to get reliable, unbiased data one way or another on the cost-effectiveness of this energy source.

Of course, as with solar, I’m always hearing that wind power is getting cheaper. Thoughts off the top of my head: a standard wind farm of I don’t know how many units would be up-front quite expensive, though standardised, ready-tested designs will have brought per unit price down over the years. Maintenance costs, though, would be relatively cheap. And maybe with improved future design they could generate power at higher wind speeds than they do now. They seem to be good for servicing small towns and country regions. How they work with electricity grids is largely a mystery to me. There’s a problem with connecting them to other energy sources, and they’re not reliable enough (because the wind’s not reliable enough) to provide base-load power. I don’t know if there’s any chance of somehow storing excess energy generated. All of these issues would affect cost.

I also wonder, considering all the naysayers, why hard-headed governments, such as the Chinese, are so committed to this form of energy. Also, why has the government of Denmark, a pioneering nation in wind power, backed away from this resource recently, or has it? It’s so hard to find reliable sources on the true economics of wind power. Clearly, subsidies muddy the water, but this is true for all energy sources. It’s probably quixotic to talk about the ‘real cost’ of any of them.

Whatever the cost, businesses around the world are investing big-time in wind and other forms of renewable energy. In the US, after the bumbling boy-king’s highly telegraphed withdrawal from the Paris agreement, some 900 businesses and investors, including many of the country’s largest firms, signed a pledge to the UN that there were still ‘in’. The biggest multinational companies are not only jumping on the bandwagon, they’re fighting to drive it, creating in the process an unstoppable global renewable energy network.

The Economist, an American mag, had this to say in an article only recently:

In America the cost of procuring wind energy directly is almost as cheap as contracting to build a combined-cycle gas power plant, especially when subsidies are included…. In developing countries, such as India and parts of Latin America and the Middle East, unsubsidised prices at solar and wind auctions have fallen to record lows.

Australia’s current government, virtually under siege from its conservative faction, is having a hard time coming to terms with these developments, as Chris Back’s dismissive comments reveal, but the direction in which things are going vis-à-vis energy supply is clear enough. Now it’s very much a matter of gearing our electricity market to face these changes, as soon as possible. Without government support this is unlikely to happen, but our current government is more weakened by factionalism than ever.

Australia is 17th in the world for wind power, with a number of new wind farms becoming operational in the last year or so. South Australia’s push towards wind power in regional areas is well known, and the ACT is also developing wind power in its push towards 100% renewable energy by 2020. Australia’s Clean Energy Council provides this gloss on the wind energy sector which I hope is true:

Technological advances in the sector mean that wind turbines are now larger, more efficient and make use of intelligent technology. Rotor diameters and hub heights have increased to capture more energy per turbine. The maturing technology means that fewer turbines will be needed to produce the same energy, and wind farms will have increasingly sophisticated adaptive capability.

The US Department of Energy website has a factsheet – ‘top 10 things you didn’t know about wind power’, and its second fact is bluntly stated:

2. Wind energy is affordable. Wind prices for power contracts signed in 2015 and levelized wind prices (the price the utility pays to buy power from a wind farm) are as low as 2 cents per kilowatt-hour in some areas of the country. These rock-bottom prices are recorded by the Energy Department’s annual Wind Technologies Market Report.

As The Economist points out, in the article linked to above, Trump’s ignorant attitude to renewables and climate science will barely affect the US business world’s embrace of clean energy technology. I’m not sure how it works, but it seems that the US electricity system is less centralised than ours, so its states are less hampered by the dumbfuckery of its national leaders. If only….


Written by stewart henderson

July 3, 2017 at 2:11 pm

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