The Climate Show #13: James Hansen and the critical decade

Special guest on this week’s show is Dr James Hansen, director of NASA’s Goddard Institute of Space Studies and perhaps the best-known climate scientist in the world — the man who put the 350 in 350.org and a forceful advocate for leaving coal in the ground. We caught up with him during his recent NZ tour, and grabbed an interview during his whirlwind visit to Canterbury University (thanks Bronnie!). John Cook’s back from the tour launching his new book Climate Denial: Heads In The Sand, and talks about his experiences on the road as well as debunking the “CO2 lags warming” myth. Plus the Australian Climate Commission’s new report, The Critical Decade, Britain’s ambitious new carbon targets, and a couple of new solar power initiatives.

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The Climate Show #12: twisters, Olaf on ozone, and Google in the sun

Ozone is the centrepiece of our show this week, with Dr Olaf Morgenstern of NIWA’s Central Otago atmospheric science lab (celebrating its 50th birthday at the moment) explaining the ins and outs of the ozone holes north and south, and their impacts on the climate system. Plus tornadoes, heatwaves, UN negotiations at an impasse, more melting in the Arctic, airships, see-through solar cells and Google’s solar towers. No John Cook this time — he’s been too busy launching his book (good luck with that John!).

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Ramping up renewables

There may be conflicting reports as to whether renewable energy can replace fossil fuels in time to significantly reduce carbon dioxide emissions, and there are still plenty of people in positions of authority, like our own Energy Minister, who see little reason to hurry the process. The heavy lobbying influence of big oil and coal interests remains powerful. But it’s heartening to be reminded from time to time that transition is nevertheless under way in many parts of the world and that it’s gathering pace. An Earth Policy Institute article has arrived in my inbox offering just such a reminder. It refreshes what Lester Brown had to say about the shift to renewable energy in his book Plan B 4.0.

 

I reviewed the book on Hot Topic last year, but at the risk of repeating myself I’ll report some of the points which he now reiterates and updates. The first is that the transition to energy powered by wind, solar and geothermal sources is moving worldwide at a pace and on a scale we could not have imagined even two years ago. Texas, the oil state, is a prime example. It has 9,700 megawatts of wind generating capacity online, 370 more in construction, and a huge amount in the development stage. When all of these wind farms are completed, Texas will have 53,000 megawatts of wind generating capacity—the equivalent of 53 coal-fired power plants. This will more than satisfy the residential needs of the state’s 25 million people, enabling Texas to export electricity, just as it has long exported oil.

South Dakota has begun development on a vast 5050-megawatt farm that when completed will produce nearly five times as much electricity as the state needs. It will become an exporter, as some ten American states and several Canadian provinces are planning to be.

Brown then moves across the Atlantic to point to the hopes of the Scottish government for the development of an enormous off-shore wind generating capacity of some 60,000 megawatts. I reported  on Hot Topic a few months ago on a major survey which has identified North Sea potential from wind and wave of even larger potential, capable of producing six times as much electricity as is currently used in the UK. If joined to a northern super-grid it could enable access to a single European electricity market and export opportunity.

Algeria plans to build 6000 megawatts of solar thermal generating power for export to Europe via undersea cable

It’s not only the developed world that is embracing renewable energy on a rapidly growing scale. Brown instances Algeria’s plans to build 6000 megawatts of solar thermal generating power for export to Europe via undersea cable. He points to their awareness that they have enough harnessable solar energy in their vast deserts to power the entire world economy. Solar energy is clearly of enormous potential not only in the Mediterranean region but also in the south-west US and the Indian desert and China, and there is regular news of new developments in all of these areas.

Brown touches on Turkey where construction  permits are being issued for 7,000 megawatts of wind generating capacity, in response to bids to build a staggering 78,000 megawatts. In Indonesia the state oil company Pertamina is responsible for developing most of a planned 6,900 megawatts of geothermal generating capacity.

“These are only a few of the visionary initiatives to tap the earth’s renewable energy. The resources are vast. In the United States, three states—North Dakota, Kansas, and Texas—have enough harnessable wind energy to run the entire economy. In China, wind will likely become the dominant power source. Indonesia could one day get all its power from geothermal energy alone. Europe will be powered largely by wind farms in the North Sea and solar thermal power plants in the North African desert.”

The 20th century saw the globalisation of the world energy economy as countries everywhere turned to oil, much of it from the Middle East. This century, says Brown, will see the localisation of energy production as the world turns to wind, solar and geothermal energy. It will also see the electrification of the economy.

“The transport sector will shift from gasoline-powered automobiles to plug-in gas-electric hybrids, all-electric cars, light rail transit, and high-speed intercity rail. And for long-distance freight, the shift will be from diesel-powered trucks to electrically powered rail freight systems. The movement of people and goods will be powered largely by electricity. In this new energy economy, buildings will rely on renewable electricity almost exclusively for heating, cooling, and lighting.”

Can renewable energy be expanded fast enough? Brown thinks so, encouraged by the phenomenon of the extraordinary growth of the communications and information economies in only the last thirty years. Others don’t. Barry Brook in Australia is one, with his views summed up in this recent article and much more on his Brave New Climate website. Not that he’s arguing for fossil fuels – in his view nuclear power is the only technology that can get us there fast enough and economically enough.

Lester Brown falls back on the analogy of the Second World War when the American economy changed direction with extraordinary speed and prospered in doing so. He’s not alone in sounding this theme, but he was an early proponent of it. The difficulty with this concept is that our societies are hardly yet ready to see climate change in the stark terms which obtained in 1939 and 1941.

Whether renewables will be ratcheted up quickly enough or not they certainly represent one of our best hopes of containing climate change impacts. Don’t forget to tell Gerry Brownlee so before September 2, when submissions on the new draft energy strategy close. I’ve said elsewhere on Hot Topic what I see as wrong with the draft.  Simon Boxer of Greenpeace has put it succinctly:

“It’s a document that lacks vision and goals. It shows that the Energy and Resources Minister Gerry Brownlee is ignoring the climate crisis. It’s a route map to a dead end.

“The Government’s energy strategy prioritises drilling and mining for more oil and coal, while providing virtually no stimulation for the development of renewable energy and clean technology. It fails to acknowledge the seriousness of climate change and makes no attempt to set measurable emissions reduction targets.”

If you’d like some suggestions the Greens offer a thoughtful submission guide.  If you’re lacking time a shortcut is offered by Greenpeace or WWF . Many of the 40,000 submissions received by the government on Brownlee’s proposals to mine conservation land no doubt used form statements provided by organisations. They still count, so use one of the offered quick responses rather than pass the opportunity by.

Technology advances, politicians hold back

In the face of the utterly depressing final confirmation that the proposed energy bill has been abandoned in the US Senate in the face of Republican opposition, and the realisation that Obama has let the opportunity die without a fight, as Joe Romm puts it, I cast around for something cheering this morning.  I found it in an interesting article on Chris Goodall’swebsite Carbon Commentary. The article describes the world’s first molten salts Concentrating Solar Power (CSP) plant. It’s not the first to use molten salts, in that many of the newer CSP plants use molten salts storage to extend the plant’s daily operating hours, but it is the first to use molten salts not just to store heat but also to collect it from the sun in the first place. Normally, pressurised oil which heats up to around 390 degrees is used to collect the heat.

Molten salts can operate at higher temperatures than oils, up to 550 degrees, thus increasing the efficiency and power output of a plant. With the higher-temperature heat storage allowed by the direct use of salts, the plant can also extend its operating hours longer than an oil-operated CSP plant with molten salt storage, working, the article claims, 24 hours a day for several days even in the absence of sun or during rainy days.

This feature also enables a simplified plant design, as it avoids the need for oil-to-salts heat exchangers, and eliminates the safety and environmental concerns related to the use of oils.

Significantly, the higher temperatures reached by the molten salts enable the use of steam turbines at the standard pressure/temperature parameters as used in most common gas-cycle fossil power plants. This means that conventional power plants can be integrated – or, in perspective, replaced – with this technology without expensive retrofits to the existing assets. The first plant, a small one of 5 MW, located in Priolo Gargallo (Sicily), is fully integrated to an existing combined-cycle gas power plant.

A small comfort, perhaps. However the writer describes it as a top-notch world’s first, expensive at around 60 million euros but with overwhelming scope for a massive roll-out of the new technology at utility scale in sunny regions like Northern Africa, the Middle East, Australia, the US.

Solar power is certain to play a large part globally in a future of renewable energy, if we don’t destroy that future before it arrives, and the constant improvements in harnessing the power of the sun are highly encouraging.

Meanwhile back in New Zealand the government has today released a draft of its proposed new energy strategy, which Gerry Brownlee announced the need for shortly after becoming Minister of Energy because the previous one  was just “an idealistic vision document for carbon neutrality”.  I’ve only had a cursory look so far, but it certainly looks like the great step backwards that he signalled. In the section headed Areas of Focus the leading item is “Develop petroleum and mineral fuel resources.” This is what it means:

“The country already benefits substantially from the revenue gathered from the development and sale of petroleum and coal resources, and both are significant export earners.

“Further commercialisation of petroleum and mineral fuel resources has the potential to produce a step change in economic growth for the country.”

The document does move on to renewables:

“The Government retains the aspirational, but achievable, target that 90 percent of electricity generation be from renewable sources by 2025 (in an average hydrological year) providing this does not affect security of supply.”

But we’re not going to get carried away with aspiration:

“Achieving this target must not be at the expense of the security and reliability of our electricity supply. For the foreseeable future some fossil fuel generation will be required to support supply security.”

There is some useful stuff on renewables and on new technologies, but the minister is obviously unwilling to face the reality of what continuing to produce and burn petroleum and coal actually means for the climate. It means hell and high water, to use Joe Romm’s words in his book of that title. In that book Romm also said that the global warming problem is a now only a problem of politics and political will. Technologies advance, but politicians lag.