How an Aussie invention could soon cut 5% of the world’s greenhouse gas emissions



Australian-designed technology will soon be responsible for 50% of all solar energy produced globally.
Glenn Hunt/AAP

Andrew Blakers, Australian National University

In the 1980s, a global race was underway: to find a more efficient way of converting energy from the sun into electricity.

Some 30 years ago, our research team at the University of New South Wales (UNSW) came up with a breakthrough, called the PERC silicon solar cell. The cells have become the most widely deployed electricity generation technology in terms of capacity added globally each year – comfortably exceeding wind, coal, gas, hydro and others.




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PERC stands for Passivated Emitter and Rear Cell. By the end of this year, PERC technology will be mitigating about 1% of global greenhouse gas emissions by displacing coal burning. Assuming that its rapid growth continues, it should be reducing greenhouse gas emissions by 5% by the mid-2020s and possibly much more in later years.

The terrible bushfires in Australia this summer, enhanced by the hottest and driest year on record in 2019, underline the need for urgent reductions in greenhouse gas emissions. By far the most effective way is driving coal out of electricity systems through very rapid deployment of solar and wind.

Soon, our Aussie invention will be generating half the world’s solar power. It is a pertinent reminder of Australia’s capacity for finding transformative technical solutions to address climate change. But we need the right government support.

A solar farm near Canberra.
Lukas Coch/AAP

An Aussie invention

Solar cells convert sunlight directly into electricity without moving parts. More efficient solar cells generally produce cheaper electricity because fewer solar cells, glass covers, transport, land and support structures are needed for a given solar power output.

By the early 1980s, the best laboratory cells around the world had reached 17% efficiency. This means that 17% of the sunlight was converted to electricity, and the rest (83%) of the solar energy was lost (as heat).

During the 1980s, our research team at UNSW led by Martin Green and myself created a series of world-record-efficient silicon solar cells. We reported 18% efficiency in 1984, 19% efficiency also in 1984, and the important milestone of 20% efficiency in 1986.




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In 1989 our group reported a new solar cell design called “PERC”, with a record efficiency of 22-23%.

This new, more efficient cell was better than the old ones because we eliminated some defects in the silicon crystal surface, which led to lower electronic losses. The PERC design also enabled us to capture the sunlight more effectively.

In the 1990s, further improvements to laboratory PERC cells were made at UNSW, leading to cells in the 24-25% efficiency range. The global silicon solar cell efficiency record remained at UNSW until recently.

There was a 25-year gap between development of the PERC cell and its rapid commercial adoption, which began in 2013. During this time, many people worked to adapt the PERC design to commercial production.

PERC cells are more efficient than previous commercial cells. Strong incentives for more efficient cells have recently arisen due to the continually falling share of cell costs as a proportion of total solar power system costs (including transport, land and mounting systems).

The big benefits of solar

Currently, solar power constitutes more than 40% of net new electricity generation capacity additions, with fossil, nuclear, wind, hydro and other renewables making up the balance.

Solar is growing faster than the other electricity generation technologies. Over time, as fossil-fuelled power stations are retired, solar (and wind) will dominate electricity production, with consequent large reductions in greenhouse gas emissions.

Solar power has experienced sustained rapid exponential growth over decades, while other generation technologies are currently experiencing static, falling or negligible sales.
https://www.irena.org/publications/2019/Mar/Renewable-Capacity-Statistics-2019

This year, enough PERC solar modules will be sold to generate 60-70 gigawatts of power. According to projections, PERC will reach three quarters of annual solar module sales in the mid-2020s, enough to match the generation capacity additions from all other technologies combined.

About A$50 billion worth of PERC modules have been sold to date. This is expected to reach several hundred billion Australian dollars later this decade.

Just imagine

Australian emissions (excluding those from bushfires) are falling because we are installing solar and wind four times faster per capita than the EU, US, Japan and China.

Our position as a global leader in renewables installation is uncertain because the Renewable Energy Target, which was achieved in 2019, has not been extended.




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With supportive policy, such as facilitating more transmission to bring solar and wind power to the cities, Australia could greatly increase the speed at which wind and solar are deployed, yielding rapid and deep cuts at about zero-net cost.

Such policy would entail stronger and sustained government support for renewables deployment, and research and development of new technologies.

Renewables must replace polluting coal-fired power if the world is to tackle climate change.
SASCHA STEINBACH/EPA

Looking ahead

Solar energy is vast, ubiquitous and indefinitely sustainable. Simple calculations show that less than 1% of the world’s land area would be required to provide all of the world’s energy from solar power – much of it on building roofs, in deserts and floating on water bodies.

Solar systems use only very common materials (we could never run out), have minimal need for mining (about 1% of that needed for equivalent fossil or nuclear fuels), have minimal security and military risks (we will never go to war over solar access), cannot have significant accidents (unlike nuclear), and have minimal environmental impact over unlimited time scales.

Australia is making major contributions to mitigating climate change both through rapid deployment of wind and solar and technology development such as our PERC cells. But with better government support, much more can be done – quickly and at low cost.The Conversation

Andrew Blakers, Professor of Engineering, Australian National University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Global emissions to hit 36.8 billion tonnes, beating last year’s record high


Pep Canadell, CSIRO; Corinne Le Quéré, University of East Anglia; Glen Peters, Center for International Climate and Environment Research – Oslo; Pierre Friedlingstein, University of Exeter; Robbie Andrew, Center for International Climate and Environment Research – Oslo; Rob Jackson, Stanford University, and Vanessa Haverd, CSIRO

Global emissions for 2019 are predicted to hit 36.8 billion tonnes of carbon dioxide (CO₂), setting yet another all-time record. This disturbing result means emissions have grown by 62% since international climate negotiations began in 1990 to address the problem.

The figures are contained in the Global Carbon Project, which today released its 14th Global Carbon Budget.




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Digging into the numbers, however, reveals a silver lining. While overall carbon emissions continue to rise, the rate of growth is about two-thirds lower than in the previous two years.

Driving this slower growth is an extraordinary decline in coal emissions, particularly in the United States and Europe, and growth in renewable energy globally.

A less positive component of this emissions slowdown, however, is that a lower global economic growth has contributed to it. Most concerning yet is the very robust and stable upward trends in emissions from oil and natural gas.

Coal is king, but losing steam

The burning of coal continues to dominate CO₂ emissions and was responsible for 40% of all fossil fuel emissions in 2018, followed by oil (34%) and natural gas (20%). However, coal emissions reached their highest levels in 2012 and have remained slightly lower since then. Emissions have been declining at an annual average of 0.5% over the past five years to 2018.

Coal emissions hit a peak in 2012 and have been declining ever since.
Global Carbon Project 2019

In 2019, we project a further decline in global coal CO₂ emissions of around 0.9%. This decline is due to large falls of 10% in both the US and the European Union, and weak growth in China (0.8%) and India (2%).

The US has announced the closure of more than 500 coal-fired power plants over the past decade, while the UK’s electricity sector has gone from 40% coal-based power in 2012 to 5% in 2018.

Whether coal emissions reached a true peak in 2012 or will creep back up will depend largely on the trajectory of coal use in China and India. Despite this uncertainty, the strong upward trend from the past has been broken and is unlikely to return.

Oil and natural gas grow unabated

CO₂ emissions from oil and natural gas in particular have grown robustly for decades and show no signs of slowing down. In fact, while emissions growth from oil has been fairly steady over the past decade at 1.4% a year, emissions from natural gas have grown almost twice as fast at 2.4% a year, and are estimated to further accelerate to 2.6% in 2019. Natural gas is the single largest contributor to this year’s increase in global CO₂ emissions.

This uptick in natural gas consumption is driven by a range of factors. New, “unconventional” methods of extracting natural gas in the US have increased production. This boom is in part replacing coal for electricity generation.




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In Japan, natural gas is filling the void left by nuclear power after the Fukushima disaster. In most of the rest of the world, new natural gas capacity is primarily filling new energy demand.

Oil emissions, on the other hand, are largely being driven by the rapidly growing transport sector. This is increasing across land, sea and air, but is dominated by road transport.

Australia’s emissions have also seen significant reductions from coal sources over the past decade, while emissions from oil and natural gas have grown rapidly and are driving the country’s overall growth in fossil CO₂ emissions.

CO₂ emissions from fossil fuels in Australia (in million tonnes).
Data Source: UNFCCC, CDIAC, BP, USGS

Emissions from deforestation

Preliminary estimates for 2019 show that global emissions from deforestation, fires and other land-use changes reached 6 billion tonnes of CO₂ – about 0.8 billion tonnes above 2018 levels. The additional emissions largely come from elevated fire and deforestation activity in the Amazon and Southeast Asia.

The accelerated loss of forests in 2019 not only leads to higher emissions, but reduces the capacity of vegetation to act as a “sink” removing CO₂ from the atmosphere. This is deeply concerning, as the world’s oceans and plants absorb about half of all CO₂ emissions from human activities. They are one of our most effective buffers against even higher CO₂ concentrations in the atmosphere, and must be safeguarded.

Fires and deforestation in the Amazon and Southeast Asia drove a new record high in land-related emissions.
Global Carbon Project 2019

Not all sinks can be managed by people – the open ocean sink being an example – but land-based sinks can be actively protected by preventing deforestation and degradation, and further enhanced by ecosystem restoration and reforestation.




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For every year in which global emissions grow, the goals of the Paris Agreement are one step further removed from being achievable. We know many ways to decarbonise economies that are good for people and the environment. Some countries are showing it is possible. It is time for the rest of the world to join them.The Conversation

Pep Canadell, Chief research scientist, CSIRO Oceans and Atmosphere; and Executive Director, Global Carbon Project, CSIRO; Corinne Le Quéré, Royal Society Research Professor, University of East Anglia, University of East Anglia; Glen Peters, Research Director, Center for International Climate and Environment Research – Oslo; Pierre Friedlingstein, Chair, Mathematical Modelling of Climate, University of Exeter; Robbie Andrew, Senior Researcher, Center for International Climate and Environment Research – Oslo; Rob Jackson, Chair, Department of Earth System Science, and Chair of the Global Carbon Project, globalcarbonproject.org, Stanford University, and Vanessa Haverd, Senior research scientist, CSIRO

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Green cement a step closer to being a game-changer for construction emissions



If the cement industry were a country, it would be the third-largest emitter of CO₂ in the world.
Joe Mabel/Wikimedia, CC BY-SA

Yixia (Sarah) Zhang, Western Sydney University; Khin Soe, Western Sydney University, and Yingying Guo, UNSW

Concrete is the most widely used man-made material, commonly used in buildings, roads, bridges and industrial plants. But producing the Portland cement needed to make concrete accounts for 5-8% of all global greenhouse emissions. There is a more environmentally friendly cement known as MOC (magnesium oxychloride cement), but its poor water resistance has limited its use – until now. We have developed a water-resistant MOC, a “green” cement that could go a long way to cutting the construction industry’s emissions and making it more sustainable.

Producing a tonne of conventional cement in Australia emits about 0.82 tonnes of carbon dioxide (CO₂). Because most of the CO₂ is released as a result of the chemical reaction that produces cement, emissions aren’t easily reduced. In contrast, MOC is a different form of cement that is carbon-neutral.

Global CO₂ emissions from rising cement production over the past century (with 95% confidence interval).
Source: Global CO2 emissions from cement production, Andrew R. (2018), CC BY



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What exactly is MOC?

MOC is produced by mixing two main ingredients, magnesium oxide (MgO) powder and a concentrated solution of magnesium chloride (MgCl₂). These are byproducts from magnesium mining.

Magnesium oxide (MgO) powder (left) and a solution of magnesium chloride (MgCl₂) are mixed to produce magnesium oxychloride cement (MOC).
Author provided

Many countries, including China and Australia, have plenty of magnesite resources, as well as seawater, from which both MgO and MgCl₂ could be obtained.

Furthermore, MgO can absorb CO₂ from the atmosphere. This makes MOC a truly green, carbon-neutral cement.




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MOC also has many superior material properties compared to conventional cement.

Compressive strength (capacity to resist compression) is the most important material property for cementitious construction materials such as cement. MOC has a much higher compressive strength than conventional cement and this impressive strength can be achieved very fast. The fast setting of MOC and early strength gain are very advantageous for construction.

Although MOC has plenty of merits, it has until now had poor water resistance. Prolonged contact with water or moisture severely degrades its strength. This critical weakness has restricted its use to indoor applications such as floor tiles, decoration panels, sound and thermal insulation boards.

How was water-resistance developed?

A team of researchers, led by Yixia (Sarah) Zhang, has been working to develop a water-resistant MOC since 2017 (when she was at UNSW Canberra).

Adding industrial byproducts fly ash (above) and silica fume (below) improves the water resistance of MOC.
Author provided

To improve water resistance, the team added industrial byproducts such as fly ash and silica fume to the MOC, as well as chemical additives.

Fly ash is a byproduct from the coal industry – there’s plenty of it in Australia. Adding fly ash significantly improved the water resistance of MOC. Flexural strength (capacity to resist bending) was fully retained after soaking in water for 28 days.

To further retain the compressive strength under water attack, the team added silica fume. Silica fume is a byproduct from producing silicon metal or ferrosilicon alloys. When fly ash and silica fume were combined with MOC paste (15% of each additive), full compressive strength was retained in water for 28 days.

Both the fly ash and silica fume have a similar effect of filling the pore structure in MOC, making the cement denser. The reactions with the MOC matrix form a gel-like phase, which contributes to water repellence. The extremely fine particles, large surface area and high reactive silica (SiO₂) content of silica fume make it an effective binding substance known as a pozzolan. This helps give the concrete high strength and durability.

Scanning electron microscope images of MOC showing the needle-like phases of the binding mechanism.
Author provided



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Although the MOC developed so far had excellent resistance to water at room temperature, it weakened fast when soaked in warm water. The team worked to overcome this by using inorganic and organic chemical additives. Adding phosphoric acid and soluble phosphates greatly improved warm water resistance.

Examples of building products made using MOC.
Author provided

Over three years, the team has made a breakthrough in developing MOC as a green cement. The strength of concrete is rated using megapascals (MPa). The MOC achieved a compressive strength of 110 MPa and flexural strength of 17 MPa. These values are a few times greater than those of conventional cement.

The MOC can fully retain these strengths after being soaked in water for 28 days at room temperatures. Even in hot water (60˚C), the MOC can retain up to 90% of its compressive and flexural strength after 28 days. The values remain as high as 100 MPa and 15 MPa respectively – still much greater than for conventional cement.

Will MOC replace conventional cement?

So could MOC replace conventional cement some day? It seems very promising. More research is needed to demonstrate the practicability of uses of this green and high-performance cement in, for example, concrete.

When concrete is the main structural component, steel reinforcement has to be used. Corrosion of steel in MOC is a critical issue and a big hurdle to jump. The research team has already started to work on this issue.

If this problem can be solved, MOC can be a game-changer for the construction industry.




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The Conversation


Yixia (Sarah) Zhang, Associate Professor of Engineering, Western Sydney University; Khin Soe, Research Associate, School of Computing, Engineering and Mathematics, Western Sydney University, and Yingying Guo, PhD Candidate, School of Engineering and Information Technology, UNSW

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Our shameful legacy: just 15 years’ worth of emissions will raise sea level in 2300



Indonesian residents wade through flood water near the Ciliwung river in Jakarta in February 2018. Our emissions in the near future will lock in sea level rise over centuries.

Bill Hare, Potsdam Institute for Climate Impact Research

Greenhouse gas emissions released over the first 15 years of the Paris Agreement would alone lock in 20cm of sea-level rise in centuries to come, according to new research published today.

The paper shows that what the world pumps into the atmosphere today has grave long-term consequences. It underscores the need for governments to dramatically scale up their emission reduction ambition – including Australia, where climate action efforts have been paltry.

The report is the first to quantify the sea-level rise contribution of human-caused greenhouse gas emissions that countries would release if they met their current Paris pledges.

The 20cm sea-level rise is equal to that observed over the entire 20th century. It would comprise one-fifth of the 1m sea level rise projected for 2300.

A satellite image showing meltwater ponding in northwest Greenland near the ice sheet’s edge.
EPA/NASA EARTH OBSERVATORY

The picture is bleak

The study was led by researchers at Climate Analytics and the Potsdam Institute for Climate Impact Research, and was published today by the Proceedings of the National Academy of Sciences. It estimated the sea level rise to be locked in by 2300 due to greenhouse gas emissions between 2016 and 2030 – the first pledge period on the Paris treaty.

During those 15 years, emissions would cause sea levels to rise by 20cm by 2300. Even if the world cut all emissions to zero in 2030, sea levels would still rise in 2300. These estimates do not take into account the irreversible melting of parts of the Antarctic ice sheet.




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The researchers found that just over half of the sea level rise can be attributed to the top five polluters: China, the US, the European Union, India and Russia.

The emissions of these jurisdictions under will cause seas to rise by 12cm by 2300, the study shows.

The important takeaway message is that what the world does now will take years to play out – it is a stark warning of the long-term consequences of our actions.

Severe storms at Collaroy on Sydney’s northern beaches caused major damage to beachfront homes.
UNSW WATER RESEARCH

It’s worse than we thought

Last week a separate paper in Nature Communications showed sea-level rise could affect many more people than previously thought. The authors produced a new digital elevation model that showed many of the world’s coastlines are far lower than estimated with standard methods.

In low-lying parts of coastal Australia, for example, the previous data has
overestimated elevation by an average of 2.5m.

Their projections for the millions of people to be affected by sea-level rise are frightening. Within three decades, rising sea levels could push chronic floods higher than land currently home to 300 million people. By 2100, areas home to 200 million people could be permanently below the high tide line.

But what of Australia, girt by sea?

Australia is a coastal nation: the vast majority of our population lives within 50km of the sea, and will be heavily impacted by sea-level rise. Already, we’re seeing severe coastal erosion and inundation during king tides – and that’s without factoring in the impact of storm surges.

Clearly the world needs strong climate action to reduce greenhouse gas emissions as fast as possible. The Intergovernmental Panel on Climate Change has said emissions must be lowered to 45% below 2010 levels by 2030 and to zero by mid-century.

We also know that unless the world achieves this, we will not just lose parts of our coasts but also iconic ecosystems such as the Great Barrier Reef.



Australia’s emissions comprise a relatively small proportion of the global total – 1.4% or around 5% if we count coal and liquified natural gas exports. However, we have a much bigger diplomatic and political influence on the international stage.




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Australia should use its position to push for urgent action internationally. But the federal government’s appalling record on emissions reduction – despite its efforts to claim otherwise – puts us in a very weak position on the global stage. We cannot point fingers at other nations while our emissions rise and we sell as much coal as possible to the rest of the world, while also burning as much as we can.



All the while, Australia is becoming the poster child for extreme sea-level events, more frequent and severe bushfires and other devastating climate impacts.

Governments, including Australia’s, must put forward much stronger 2030 emission reduction pledges by 2020. There should seek to decarbonise at a pace in line with the Paris Agreement’s 1.5°C temperature goal.

Otherwise, our emissions today will cause seas to rise far into the future. This process cannot be reversed – it will be our legacy to future generations.


Climate Analytics researcher Alexander Nauels was lead author of the study.The Conversation

Bill Hare, Director, Climate Analytics, Adjunct Professor, Murdoch University (Perth), Visiting scientist, Potsdam Institute for Climate Impact Research

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Double counting of emissions cuts may undermine Paris climate deal


Ice floe adrift in Vincennes Bay in the Australian Antarctic Territory. There are fears efforts to combat global warming will be undermined by double counting of carbon credits.
AAP/Torsten Blackwood

Frank Jotzo, Crawford School of Public Policy, Australian National University; Lambert Schneider, Oeko-Institut, and Maosheng DUAN, Tsinghua University

In the four years since the Paris climate agreement was adopted, countries have debated the fine print of how emissions reduction should be tracked and reported. One critical detail is proving particularly hard to work out – and a weak result would threaten the environmental integrity of the entire deal.

The sticking point is rules for carbon markets: specifically, how to prevent double counting of emissions reductions by both the country selling and buying carbon credits.

These rules are proving a major barrier to reaching consensus. In December, the negotiations move to Chile for this year’s major climate talks, known as COP25. The double counting issue needs to be resolved. It will not be an easy job, and the outcome matters to many countries, including Australia.




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The Morrison government says Australia will meet the Paris emissions targets by 2030 without international trading – partly by counting old carbon credits towards its Paris efforts. But in future Australia may adopt a stronger target in line with global climate goals. This may entail government and businesses buying carbon credits from overseas.

In an article just published in the journal Science, we and our co-authors* explain why double counting could undermine the Paris goals, and how a robust outcome could be achieved.

The Port Kembla industrial works in Wollongong. Industrial activity is a major contributor to overall global emissions.
AAP/Deal Lewins

What’s the problem here?

International carbon trading allows two or more countries to achieve their emissions targets more cheaply than if going it alone. Countries where cutting emissions is relatively cheap do more than is required by their targets. They then sell the additional emissions reductions, in the form of credits, to countries that find it harder to achieve their targets.

Carbon credits could be produced through activity such as replacing fossil fuels with zero-emissions energy, greater energy efficiency and electrification in transport and buildings, new technologies in industry and better practices in agriculture and forestry.

Rules for carbon trading are defined under Article 6 of the Paris agreement. Trading under the deal could be big: almost half the parties to the agreement have signalled they want to use carbon markets. Airlines might also become major buyers of emissions credits, under rules requiring them to offset increases in carbon emissions from international flights above 2020 levels.

The cost savings from using carbon markets could make it easier for countries to adopt more ambitious targets – ultimately resulting in greater emissions reductions.




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But if trading rules are not watertight then the use of carbon markets could lead to greater emissions, undermining the agreement.

One fundamental risk is double counting: a country selling a carbon credit might claim the underlying emissions reduction for itself, while at the same time the country buying the credit also claims the same emissions reduction.

Obviously any international transfer of emission reductions should not lead to higher total emissions than if participating countries had met their targets individually. This could be ensured through a form of double-entry bookkeeping, wherein the country selling carbon credits adjusts its emissions upwards, and the country acquiring the carbon credits adjusts, by the same amount, downwards.

But the devil lies in the detail – and in the self interest of the parties involved.

Planes lined up at Sydney Airport. The aviation industry will likely buy carbon credits to offset its emissions growth from 2020.
AAP

The bones of contention

Countries are wrangling over what double counting is, how it should be avoided and whether it should sometimes be allowed.

Some countries hoping to sell emissions credits, notably Brazil, propose rules under which emissions reductions sold to another country could effectively also be claimed by the selling country. Such rules existed under the Kyoto Protocol, which came before the Paris agreement. However under Kyoto developing countries did not have emission targets. All major countries have emissions targets under Paris, making the method unsuitable now.




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Another potential pitfall lies in the potential purchase by international airlines of large amounts of credits to offset increases in their emissions. Aviation emissions are not counted in national emissions inventories. So it would be logical to adjust the selling country’s inventory for any emissions reduction sold to airlines.

But some countries, notably Saudi Arabia, argue that this should not be done because the airline industry is governed by a separate international treaty. This approach would allow emissions reductions to be included in both agreements and counted twice.

In a separate point of debate some countries – including Australia, Canada, Japan, and the United States – oppose the idea of a single international body overseeing carbon trading under the Paris agreement, arguing for more national sovereignty and flexibility between nations buying and selling.

Making things even more complex, the Paris agreement allows each country to determine how to frame their emissions target. Some countries frame them as absolute emissions, others as a reduction relative to business-as-usual, or as a ratio of emissions to gross domestic product. Some countries’ targets are simply unclear.

A deforested area in the Amazon forest in Brazil. Carbon credits can be earned by nations that retain forest rather than cutting it down.
Marcelo Sayao/EPA

Letting each country determine its own ambitions and approach was key in making the Paris agreement a reality. But it makes accounting for carbon markets more complex.

There are also questions over whether a portion of carbon trading revenue should be allocated to help pay for climate change resilience in developing countries, and whether old credits from a trading scheme under the Kyoto Protocol, the Clean Development Mechanism, should be tradable in the new scheme.

The way forward in Chile

The solutions to all these issues will be nuanced, but will require that governments agree on some fundamentals.

The first is that a single set of common international accounting rules should apply, irrespective of which carbon market mechanism is used by countries or groups of countries.

The second is to ensure robust emissions accounting, regardless of how mitigation targets are expressed.

The third is that over time, all countries should move toward economy-wide emissions targets, as the Paris Agreement foresees.

The need to reach a political deal in Chile must not result in loopholes for international carbon markets. The rules must ensure environmental integrity and avoid double counting. If this is achieved, emissions reductions can be made more cheaply and global ambition can be more readily raised. If not, then the accord could be seriously undermined.

The article in the journal Science “Double counting and the Paris Agreement rulebook” is authored by Lambert Schneider, Maosheng Duan, Robert Stavins, Kelley Kizzier, Derik Broekhoff, Frank Jotzo, Harald Winkler, Michael Lazarus, Andrew Howard, Christina Hood. See here for the full manuscript.The Conversation

Frank Jotzo, Director, Centre for Climate and Energy Policy, Crawford School of Public Policy, Australian National University; Lambert Schneider, Research coordinator for international climate policy, Oeko-Institut, and Maosheng DUAN, professor, Tsinghua University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Labor’s climate and resources spokesmen at odds over future policy


Michelle Grattan, University of Canberra

Opposition resources spokesman Joel Fitzgibbon has had his proposal to bring Labor’s climate change target into line with the government’s immediately torpedoed by the party’s climate spokesman Mark Butler.

In a speech to the Sydney Institute made public ahead of its Wednesday evening delivery Fitzgibbon suggested the ALP offer “a political and policy settlement” to match the higher end of the government’s 26-28% target for reducing emissions on 2005 levels by 2030.

Labor’s controversial election policy was for an ambitious 45% reduction.

Fitzgibbon said the change he advocated would mean “the focus would then be all about actual outcomes, and the government would finally be held to account and forced to act.

“A political settlement would also restore investment confidence and for the first time in six years, we could have some downward pressure on energy prices,” Fitzgibbon said.

But Butler rejected the proposal saying the government’s target “is fundamentally inconsistent with the Paris agreement and would lead to global warming of 3℃.

“Labor remains committed to implementing the principles of the Paris Agreement, which are to keep global warming well below 2℃ and pursue efforts around 1.5℃,” he said.

“Labor’s commitment to action on climate change is unshakeable. We will have a 2050 target of net zero emissions and medium-term targets which are consistent with the agreement,” Butler said.

Despite dismissing Fitzgibbon’s idea, Butler has acknowledged that Labor’s climate change policy must be up for grabs in the party’s review of all its policies between now and the 2022 election.

But revising the climate policy will be one of its major challenges, because the party is caught between its inner city progressive constituency and its traditional blue collar voters. Its ambivalent position on the planned Adani coal mine cost it votes in Queensland at the election.

Apart from the politics, the 45% target for 2030 would be more unrealistic at the next election because emissions at the moment are increasing, meaning ground is being lost.

Fitzgibbon, who takes a more pro-coal attitude than many of his colleagues, had a big swing against him in his NSW coal seat of Hunter.

He said in his speech that a 28% reduction would be a “meaningful achievement” and could be built on later. He also pointed out bluntly that Labor couldn’t achieve anything if perpetually in opposition.

“If we could get to 28% by 2030, and also demonstrate that we could do so without destroying blue collar jobs or damaging the economy, then we would have a great foundation from which to argue the case for being more ambitious on the road to 2050,” he said.

Shadow treasurer Jim Chalmers, who is from Queensland, refused to be pinned down when pressed on Fitzgibbon’s proposal.

“My view is we can take real action on climate change without abandoning our traditional strengths, including in regional Queensland,” he said.

The Victorian minister for energy, environment and climate change, Lily D’Ambrosio, asked at the Australian Financial Review’s national energy summit about Fitzgibbon’s comments, said she wasn’t much interested in what a federal opposition did.

“We have a very strong and ambitious policy and we took that to the last state election, and we all know the result of that election, so we will continue to implement our policies and get them done,” she said.

Federal energy minister Angus Taylor pointed to the divisions in the opposition but welcomed that there were “people in Labor who are making sensible suggestions about dropping their policies from the last election.

“What we saw happen there was Labor went to the election with policies – 45% emissions reduction target, 50% renewable energy target – where they weren’t able to or willing to detail the costs and impacts of those policies,” he said.The Conversation

Michelle Grattan, Professorial Fellow, University of Canberra

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Australia’s biggest property companies are making net-zero emissions pledges – now we can track them



Huge crowds marched last week to demand progress towards net zero emissions – and companies are listening.
AAP Image/James Ross

Amandine Denis, Monash University

Corporate Australia is taking action on climate change. Most recently, at the UN Climate Summit, Atlassian cofounder Michael Cannon-Brookes announced the A$26 billion Australian software company’s commitment to net zero emissions by 2050.

Net zero pledges like this are becoming more common but currently there is no way to really track momentum towards net zero emissions across different sectors of the economy.




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Now, a Net Zero Momentum Tracker initiative has been established by ClimateWorks Australia and the Monash Sustainable Development Institute to track emissions reduction commitments made by major Australian companies and organisations, as well as state and local governments.

The tracker aims to place all commitments to net zero emissions in Australia in one place and evaluate how well they align with the Paris climate goals.

Property sector tracking towards net zero emissions

We began by assessing Australia’s property sector. Last week we released a report examining all property companies listed in the ASX 200, plus all of those required to report their emissions under the National Greenhouse and Energy Reporting Act.

Among the companies we looked at are Dexus, Mirvac, Stockland Corporation, GPT Group, and Lendlease. They develop, own or manage some of Australia’s largest corporate offices, commercial properties, retail centres, retirement villages, and residential developments.




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The report found almost half – 43% – of Australia’s largest listed property companies have made commitments that closely align with the Paris Climate Agreement, aiming to achieve net zero greenhouse emissions before 2050 for their owned and managed assets.

Significantly, the six companies with the most ambitious net zero targets represent 36% of the ASX 200 property sector. Among these six, several major companies – Dexus, Mirvac, GPT Group, and Vicinity – are aiming for net zero emissions by 2030, demonstrating the business case for strong climate action.

Sector leaders can inspire copycat action

By highlighting what action organisations are taking and how, the Net Zero Momentum Tracker initiative aims to encourage more organisations to make and strengthen commitments to reduce their emissions, in line with the goal of net zero emissions by 2050.

For example, Australia’s largest owner and manager of office property, Dexus, has a comprehensive strategy for reaching its goal of net zero emissions across the group’s managed property portfolio. This includes reducing energy use, shifting to renewable electricity, electrifying their buildings, and reducing their non-energy emissions from waste, waste water and air conditioning.

Of particular significance is Mirvac’s pledge to be “net positive” by 2030. This means the company aims to go beyond net zero, reducing emissions by more than its operations emit. Mirvac has established an energy company to install rooftop solar on their commercial buildings and is selling power to occupants, among other initiatives. The company also has a “house with no bills” pilot project, to explore how their upstream indirect emissions can be minimised for residential developments.




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Another major company, the GPT Group, has extended its commitment beyond the assets it owns and manages to all buildings it has an ownership interest in, including buildings it co-owns or does not manage.

These companies will get multiple benefits from their action, including reduced operating costs, better health and productivity for occupants, and increased sales prices, rents and occupancy rates.

Need to accelerate action

While many property companies are tracking in the right direction, none of the companies we considered had net zero targets which comprehensively covered all of their emissions – such as those from co-owned assets, their supply chains and investments.

There is still significant opportunity for property companies to strengthen their commitments towards net zero emissions. This requires targets which address the full scope of direct and indirect emissions within each company’s influence, supported by detailed plans to achieve this.




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By making these public commitments to reduce emissions, the property sector is helping build momentum towards achieving this goal across the entire Australian economy.

The next assessments to be undertaken by the Net Zero Momentum Tracker initiative include the banking sector and state and local governments.The Conversation

Amandine Denis, Head of Research, ClimateWorks Australia, Monash University

This article is republished from The Conversation under a Creative Commons license. Read the original article.