Venezuela is suffering one of the worst economic crises of modern times. President Nicolás Maduro’s beleaguered government is overseeing scarcities of food and medicine, soaring crime rates and the collapse of public services and the health system. But when it launched a new cryptocurrency, the Petro, in an Initial Coin Offering (or ICO) the virtually bankrupt country says it raised US$735m on the first day of the pre-sale. Read more: Explainer: what are initial coin offerings (ICOs) and why are investors flocking to them? Any rational investor would probably steer well clear of the 100m Petro made available. The ICO is obviously a way to raise money by getting around the sanctions against Venezuela, which prevent it from issuing bonds or securities in the regular financial system. It is in desperate need of US dollars, with inflation running into quadruple digits – which has made the Venezuelan bolívar worthless. Meanwhile, the production of oil, on which the country’s economy relies, has plummeted in the past year. An interesting experiment That said, the Petro certainly represents a very interesting experiment. It is the biggest ICO ever proposed and, if it hits its cap of around US$5 billion – which is highly debatable – that will represent about 5% of the total number of Ethereum cryptocurrency currently circulating and will equal more than a half of the entire revenues generated by ICOs up to 2017. For Venezuela this is a smart option. Rather than restructuring the whole economy and linking a new currency to the US dollar, launching a cryptocurrency is much easier in an effort to fund the government and keep it functioning. If anything, because the Petro does not lead to any interference in the domestic political economy by third-party bailing-out institutions such as the IMF. It is fair to assume that the millions of US dollars being spent on the Petro are not coming from the US and Europe, as Venezuela is under strict financial sanctions and so trading in the Petro could land you in trouble. So it is probably coming from Asia and Middle East – and could be anybody from drug dealers to individual retail investors fancying a punt. Having read the ICO documents it is unclear what the Venezuelan government plans to do with the money. More than half has been earmarked for a sovereign fund – which is yet to be created – and its exact purpose again looks quite blurry. It is also very unclear as to the pricing of the Petro, which the document says will be linked to the price of a barrel of oil (currently about US$60) and given a “discount factor”, without defining how that is effectively calculated. In that respect, although anchored to the price of oil, the price of the Petro will be virtually controlled by the government. This could certainly be used to its advantage. Not really a cryptocurrency Ironically, Petro’s connection to the government goes against the whole idea of cryptocurrencies. They were originally designed to be decentralised and free from any government or central bank control. In this sense the Petro is not really a cryptocurrency – it is a digital security or token, backed by oil reserves. You are not buying anything that can be freely mined and traded on open cryptocurrency exchanges. The mining is controlled by the government and, as explicitly mentioned in the ICO documents, it will decide what exchanges can trade the Petro. It is therefore simply a digital form of debt from a country with no financial credibility and that is badly mismanaging its economy. This is the last resort of a country with practically nowhere else to go. Any credible democracy can raise money in the usual ways through bonds and securities, so I can only see other countries in similar problems doing this. I wouldn’t be surprised if countries like Russia are next in line to take advantage of the hype surrounding cryptocurrencies as they are suffering under sanctions as well and have lots of oil. The Petro may be easy to buy in the pre-sale, where typically most, if not all, of the coins are sold in an ICO. Then the ICO carries on for an indefinite period until the Venezuelan government has sold the 100m Petros it is aiming for. That could take many weeks, if not months – and only then will investors be able to trade the Petro. Once trading starts, it’s hard to see the price volatility that we have seen in other cryptocurrencies, because the price is essentially controlled by the government. It is not linked to supply and demand. So anyone thinking of buying Petro should think: it might be easy to buy now, but will you be able to trade it after the ICO? So despite representing a milestone in the growth of the cryptocurrency market, the Petro should be seen as a last-ditch attempt of a defaulting and desperate government to make a quick buck. It’s something that should probably raise concerns among anyone thinking of investing in it.
Bitcoin: this year I stand to make $200 million more than Elon Musk
Elon Musk, the chief executive of Tesla, recently announced his company had bought US$1.5 billion (almost A$2 billion) of Bitcoin. The announcement led to a flurry of enthusiasm and a quick surge in price for the controversial cryptocurrency. This price bump has been good news for Musk in the short term. At one point, Tesla’s Bitcoin investment had gained more than US$1 billion in value. But can the enthusiasm be sustained? I think there is a good chance that over the next year the price of Bitcoin will drop towards its fundamental value, which is nothing. If Bitcoin were to lose half its present value — which is not unlikely, given its extremely volatile past behaviour — Tesla will lose around A$1 billion. As Elon Musk owns about a fifth of Tesla, he would then be down A$200 million. In contrast, I own no Bitcoin so I will lose nothing, which means I will have done A$200 million better than Musk. Why Musk’s decision is a bad thing Musk is not doing Tesla’s shareholders any favours. If they wanted to be exposed to the rise and fall of Bitcoin they could just buy some themselves. Now they have no choice; if they want to invest in Tesla electric vehicles, they are also vulnerable to the vagaries of Bitcoin. The usual justification for making investments more diverse is that it can reduce risk. But buying the extremely volatile Bitcoin will make Tesla’s earnings even more uncertain. Nor is Musk doing his fans any favours. As a “rock star CEO” with more than 40 million followers on Twitter, his musings are widely reported in other media. By publicly endorsing Bitcoin, Musk may lead some of his fans to invest in this highly risky speculative asset. They may not be as well placed as a multibillionaire to absorb any losses on their investment. (To be fair, Musk has warned them not to invest their life savings.) Nor is he doing the inhabitants of this planet any favours. The generation of Bitcoins (known as “mining”) uses vast amounts of energy to power specialised computers solving complex but useless mathematical problems. Estimates vary as to how much energy they waste. Some studies suggest Bitcoin production uses more electricity than the whole of Argentina, Poland, Norway, or Switzerland. But even the lower estimates are that it results in more carbon emissions than Estonia. And if Bitcoin becomes more popular this will only increase. What will the Bitcoin price do? How likely is it that Bitcoin could lose half its value within a year? Well, it has form. After it peaked at A$24,000 in December 2017, it dropped to A$10,000 by February 2018. After recovering to A$16,000 in July 2019, it dropped to A$8,000 by March 2020. Bitcoin may be the purest ever example of a speculative bubble. It follows in the footsteps of famous bubbles such as the South Sea bubble, the Dutch tulip mania, gold around 1980, the dotcom boom of 2000, and the US housing market before the global financial crisis of 2008. But past bubbles have had more going for them. Houses provide shelter. Gold has industrial uses and jewellery can be made from it. The South Sea Company and millennial tech stocks at least promised streams of future dividends. Even tulips can be admired for their beauty. Bitcoin offers no return at all unless you can resell it to a “greater fool”. It is a Seinfeld asset — a speculation based on nothing. The limits of Bitcoin Bitcoin’s backers often say its value stems from the fact that supply is limited. This is complicated by the fact dissident users have created “forks” in the past, leading to schismatic bitcoins such as Bitcoin Cash. But even if we accept the limit at face value, there is no limit on the creation of other cryptocurrencies. There are literally thousands of them already, such as Litecoin, Tether and Dogecoin. In any case, just because something is in limited supply, that does not inherently make it valuable. Another argument for Bitcoin says it could be an alternative to traditional currency for making payments. The first purchase made with Bitcoin was more than a decade ago: two pizzas, paid for with 10,000 bitcoins. (I hope the buyer enjoyed the pizzas, because the coins would now be worth US$500 million.) Despite the hype, very few vendors accept Bitcoin and hardly anyone pays with it. A Sydney art gallery that accepts Bitcoin has never had anyone buy anything with it, while a bar that accepts it reports no customers using it for years. Even some crypto conferences refuse to accept Bitcoin. You can buy an “I accept Bitcoin” t-shirt on Amazon but you cannot pay for it using Bitcoin. This is unlikely to change materially. Tesla has hinted it may accept Bitcoin in future, but so far does not. There are inherent limits to the ability of Bitcoin to provide payment services. The Bitcoin network can only handle 10 transactions per second, compared with the 1,000 per second allowed by Australia’s Fast Settlement Service. Transactions may be stuck in a queue for hours. If any electronic currency becomes a significant payment medium, it is likely to be a central bank digital currency which would be legal tender and able to be used for very large numbers of transactions. Musk has plans to colonise Mars, so maybe he will declare Bitcoin the legal tender there. But until then it would be better for all of us if he kept it off Tesla’s balance sheet.
New Chia cryptocurrency promises to be greener than Bitcoin, but may drive up hard drive prices
It has been a big year for cryptocurrency. Bitcoin is worth six times what it was 12 months ago, and the joke currency Dogecoin has seen a hundredfold increase in price. A boom in “non-fungible tokens”, or NFTs – tradable tokens based on the same technology as cryptocurrency – is transforming the art market. With this growth has come renewed scrutiny, with critics attacking Bitcoin in particular as a speculative bubble that uses vast amounts of electricity and produces no real value. A new cryptocurrency called Chia, which has just begun trading, sets out to remedy these flaws while upholding cryptocurrency’s promise of a secure, decentralised form of payment. Chia is the brainchild of Bram Cohen, who invented the BitTorrent peer-to-peer filesharing system. He claims it will be more reliable than other cryptocurrencies, and more environmentally friendly too. What is cryptocurrency? Unlike traditional currencies such as the dollar or euro, which are issued by central banks and rely on trust in governments, cryptocurrencies rely on a decentralised database called a blockchain, secured by sophisticated cryptographic tools. The first cryptocurrency was Bitcoin, released in 2009, and today there are at least 5,922 cryptocurrencies available. Bitcoin is still by far the biggest; the total value of all Bitcoin now in existence is some US$1.2 trillion. Despite this booming popularity, very few retailers accept cryptocurrency as payment. Governments around the world are also exploring digital currencies. The Bank of England is hiring a dedicated team to explore the possibilities in this area, while the Australian Stock Exchange is reviewing applications for a cryptocurrency-based exchange-traded fund. Germany is one of the frontrunners in embracing crypto, and is heavily investing in blockchain solutions for institutional investment. How is Chia different from Bitcoin? Bitcoin and most other cryptocurrencies use a system in which currency is created or “mined” using computers to solve mathematical puzzles. These are known as “proof of work” systems — solving the puzzle is proof that your computer has done a certain amount of work. Doing this work takes specialised hardware and lots of energy. Bitcoin mining has helped create shortages of graphics processors, and by some estimates it is more energy-intensive than copper mining and uses more electricity than some entire countries. Chia runs on a system that should use less energy, called “proof of space and time”. In this system, users need to show they have reserved a specific amount of hard drive space at a precise time. So Chia won’t use huge amounts of electricity, and won’t see miners buying up every graphics card in sight. But the requirement for hard drive storage space may lead to other drawbacks. Hard drive price surge Even before its official launch, Chia has used more than an exabyte of data storage. That’s the equivalent of about a million of the 1 terabyte hard drives you might find in an average desktop computer. According to the South China Morning Post, hard drive prices in China have begun to soar as Chia miners stockpile storage. The price of 12-terabyte drives has increased by 59% since Chia was announced in February this year, and most professional-quality hard drives with more than 8 terabytes of capacity are sold out. Vietnam is also seeing hard drive shortages as a result of China’s Chia craze. We may well see similar effects in other countries in the not too distant future. At present, Chia lacks the name recognition and celebrity endorsements that have helped the likes of Bitcoin and Dogecoin to soar, but it has a clear cost advantage. We can expect cryptocurrency miners will be inclined to try Chia, as a cheaper option than established cryptocurrencies. Eventually, hard drive manufacturers may also revise their prices to increase their own revenue. Time will tell how Chia ends up performing on the market. If it takes off, we can expect a boom in hard drive prices. But on the flipside, it might also mean graphics processor prices come back down.
Why banning financing for fossil fuel projects in Africa isn’t a climate solution
Today’s global energy inequities are staggering. Video gamers in California consume more electricity than entire nations. The average Tanzanian used only one-sixth the electricity consumed by a typical American refrigerator in 2014. Globally, the top 10% of countries consume 20 times more energy than the bottom 10%. And 1.1 billion sub-Saharan Africans share the same amount of power generation capacity as Germany’s 83 million people. At least half have no access to electricity at all. These stark energy inequalities are fueling thorny debates around financing Africa’s energy future as world leaders and their negotiators prepare for COP26, the United Nations climate conference in Glasgow, Scotland, in November. One increasingly common theme from wealthy countries – including those responsible for the majority of greenhouse gas emissions over time – is a vow that they will cease public funding for all (or nearly all) fossil fuel projects in less developed countries, even as they continue financing, and in many cases heavily subsidizing, fossil fuels in their own. It is generally easier for countries that offer overseas development finance for energy projects to make low-carbon rules for others, rather than for themselves. For example, China, Japan and South Korea – some of the world’s highest coal-consuming nations – have each recently pledged to stop funding coal projects overseas and increase investments in renewables. But they have made no equivalent commitments at home. The U.S. Treasury and the United Kingdom’s development finance institution, CDC Group, have taken a more nuanced approach. They are limiting all coal and oil-based power generation projects and leaving a narrow window available for natural gas projects in poor countries that pass a rigorous screening process. This is roughly similar to the approach of the World Bank. As experienced clean energy policy researchers, we believe the blunt exclusion of all nonrenewable energy projects from development finance is an inequitable and ineffective climate strategy that gaslights over 1 billion Africans. Tiny climate gains, major development losses Focusing on limiting the emissions of the world’s poorest countries while emissions continue to rise in industrialized countries is clearly misdirected in our view. Given stark inequalities in energy use and emissions, this could instead entrench poverty and widen inequality induced by worsening climate change, while simultaneously accomplishing very little to reduce global greenhouse gas emissions. Together, the U.S., U.K., European Union, Japan and Russia have almost the same population – 1.1 billion people – as sub-Saharan Africa, but 35 times more gas-fired power plants in operation or under development, and 52 times more coal plants. When it comes to carbon dioxide emissions, sub-Saharan Africa is collectively responsible for barely half a percent of all global emissions over time, while the U.S., U.K., E.U., Japan and Russia are responsible for more than 100 times that amount, or about 57%. The upper bound for Africa’s future growth in power sector emissions is also negligible. If the region’s electricity demand hypothetically tripled tomorrow, rather than doubling by 2040 as the International Energy Agency recently forecast, and if only natural gas was used to meet the new demand, annual global emissions would increase by only 0.62%, according to one estimate. That’s equivalent to the state of Louisiana’s annual emissions today. What’s more, the share of renewable power in many sub-Saharan African national grids is already higher than for nearly all the big greenhouse gas emitters. In at least six countries – Kenya, Ethiopia, Malawi, Mali, Mozambique and Uganda – renewables make up more than 50% of their annual generation. In 2018, hydropower, geothermal, solar and wind made up about 20% of the continent’s total power generated. Most of the region will find renewable power to be the fastest and cheapest way to expand their generation capacity, but some areas may still need to rely on some fossil fuels in various sectors of the economy as they develop. It has been clear for decades that the world needs to rapidly and aggressively cut its greenhouse gas emissions to keep global warming below 1.5 degrees Celsius and avoid the worst impacts of climate change. Many regions in Africa, including the Sahel and Mozambique, are already facing the effects of climate change, including worsening droughts, food insecurity and severe storms. Adapting to climate change and building resilience requires the very energy, economic development and infrastructure currently lacking in some of the most affected regions and those least prepared to adapt. Climate colonialism and legacies of colonization Other experts agree that this direction of climate policy is not just ineffective, it’s rooted in the historic inequities of colonialism. The philosopher Olúfẹ́mi O. Táíwò defines climate colonialism as the “deepening or expansion of foreign domination through climate initiatives that exploits poorer nations’ resources or otherwise compromises their sovereignty.” Colonialism’s legacy is a contributing factor to a wide range of issues, from conflict to corruption, and to the poor state of electricity access across much of Africa today. While industrializing nations in the 1900s were building electricity grids through massive public spending campaigns, like Franklin Roosevelt’s New Deal in the United States and the Electricity Supply Act of 1926 in the U.K., most of Africa was being actively pilfered of its rich natural resources. Much of the infrastructure built in colonial Africa during that time was built only to facilitate resource extraction operations, such as mined commodities, oil, timber, rubber, tea, coffee and spices. In 1992, a coalition of low-income nations successfully advocated for the U.N.‘s climate mitigation pathways to include their right to development, and a “common but differentiated responsibility” to address the dual problems of development and climate change. This language has long been the basis of equity considerations in climate policy, including in the 2015 Paris Agreement, which expects deeper emissions cuts from developed countries based on their “respective capabilities”. A transition from what? Nigerian Vice President Yemi Osinbajo recently described “energy transition” as “a curious term” when applied universally, given the energy shortfalls in countries like Nigeria. He has argued for an energy transition in which Africa can
Government targets emerging technologies with $1.9 billion, saying renewables can stand on own feet
The government has unveiled a $1.9 billion package of investments in new and emerging energy and emission-reducing technologies, and reinforced its message that it is time to move on from assisting now commercially-viable renewables. The package will be controversial, given its planned broadening of the remit of the government’s clean energy investment vehicles, currently focused on renewables, and the attention given to carbon capture and storage, which has many critics. The latest announcement follows the “gas-fired recovery” energy plan earlier this week, which included the threat the government would build its own gas-fired power station if the electricity sector failed to fill the gap left by the scheduled closure of the coal-fired Liddell power plant in 2023. Unveiling the latest policy, Scott Morrison said solar panels and wind farms were commercially viable “and have graduated from the need for government subsidies”. The government was now looking to unlock new technologies “to help drive down costs, create jobs, improve reliability and reduce emissions. This will support our traditional industries – manufacturing, agriculture, transport – while positioning our economy for the future.” An extra $1.62 billion will be provided for the Australian Renewable Energy Agency (ARENA) to invest. The government will expand the focus of ARENA and the Clean Energy Finance Corporation (CEFC) to back new technologies that would reduce emissions in agriculture, manufacturing, industry and transport. At present ARENA can only support renewable energy and the CEFC can only invest in clean energy technologies (although it can support some types of gas projects). The changes to ARENA and the CEFC will need legislation. The government says it will cut the time taken to develop new Emissions Reduction Fund (ERF) methods from two years or more to under a year, involving industry in a co-design process. This follows a review of the fund, which is a centrepiece of the Coalition’s emissions reduction policy. The cost of the changes is put at $24.6 million. The fund has had trouble attracting proposals from some sectors because of its complex administrative requirements. Other measures in the policy include a new $95.4 million Technology Co-Investment Fund to support businesses in the agriculture, manufacturing, industrial and transport sectors to take up technologies to boost productivity and reduce emissions. A $50 million Carbon Capture Use and Storage Development Fund will pilot carbon capture projects. This technology buries carbon but has run into many problems over the years and its opponents point to it being expensive, risky and encouraging rather than discouraging the use of fossil fuels. Businesses and regional communities will be encouraged to use hydrogen, electric, and bio-fuelled vehicles, supported by a new $74.5 million Future Fuels Fund. A hydrogen export hub will be set up, with $70.2 million. Chief Scientist Alan Finkel has been a strong advocate for the potential of hydrogen, saying Australia has competitive advantages as a future hydrogen exporter. Some $67 million will back new microgrids in regional and remote communities to deliver affordable and reliable power. There will be $52.2 million to increase the energy productivity of homes and businesses. This will include grants for hotels’ upgrades. The government says $1.8 billion of the package is new money.
4 strategies for a global breakthrough on energy and climate change
Two important global events are coming up that are widely hoped to help address what the United Nations calls the “dual challenge” – fighting climate change and ensuring that poorer countries can develop sustainably. Energy is a central theme in both. For the first time in 40 years, the U.N. General Assembly is convening a global summit of world leaders focused solely on energy. If all goes as planned on Sept. 24, 2021, they will consider a road map that includes tripling investment in renewable power and making affordable modern and clean energy available to everyone everywhere within the decade. The second event is the U.N. climate conference in November, where negotiators representing nations around the world will be asked to ramp up their countries’ efforts to reduce their greenhouse gas emissions. This year’s climate summit will be the first to assess progress toward meeting the 2015 Paris climate agreement. There are a few new efforts – President Joe Biden announced on Sept. 17 plans for a U.S. and European Union pledge to cut methane emissions by 30% within the decade and urged other countries to join – but there are also some remaining sticking points in how nations will meet their promised targets. Resolving these will be important for the credibility of the agreement and the willingness of developing countries to commit to further progress. As climate policy experts with decades of experience in international energy policy, we have identified four strategic priorities that would help provide the foundations for success in cleaning up both energy and climate change. What has been achieved so far? Despite the ambitious goals in many countries, the world’s greenhouse gas emissions have continued to rise. The year 2020 was a brief exception – emissions fell significantly due to the global pandemic – but that trend has already reversed as economies recover. The statements released by world leaders after the recent G7 and G20 meetings underlined recognition of the problem. Still, very few countries and companies have detailed plans and budgets in place to meet their own high-level goals. Illustration showing where to cut emissions soonest most efficiently 4 strategic priorities Getting energy and climate policies worldwide headed in the same direction is a daunting task. Here are four strategies that could help countries navigate this space: 1) Deploy carbon pricing and markets more widely. Only a few countries, states and regions currently have carbon prices that are high enough to push polluters to cut their carbon dioxide emissions. The climate negotiations in Scotland will focus on getting the rules right for global markets. Making these markets function well and transparently is essential for effectively meeting the many net zero climate goals that have been announced by countries from Japan and South Korea to the U.S., China and the European Union. These include rules on the use of carbon offsets – they allow individuals or companies to invest in projects that help balance out their own emissions – which are currently highly contentious and largely not functional or transparent. 2) Focus attention on the “hard-to-decarbonize” sectors. Shipping, road freight and industries like cement and steel are all difficult places for cutting emissions, in part because they don’t yet have tested, affordable replacements for fossil fuels. While there are some innovative ideas, competitiveness concerns – such as companies moving production outside regulated areas to avoid regulations – have been a key barrier to progress. Europe is trying to overcome this barrier by establishing a carbon border adjustment mechanism, with emission levies on imports similar to those for European producers. The Biden administration is also exploring such rules. 3) Get China and other emerging economies on board. It is clear that coal, the most carbon-intensive fossil fuel, needs to be phased out fast, and doing so is critical to both the U.N.‘s energy and climate agendas. Given that more than half of global coal is consumed in China, its actions stand out, although other emerging economies such as India, Indonesia and Vietnam are also critical. This will not be easy. Notably half of the Chinese coal plants are less than a decade old, a fraction of a coal plant’s typical lifespan. 4) Focus on innovation. Support for innovation has brought us cutting-edge renewable power and electric vehicles much faster than anticipated. More is possible. For example, offshore wind, geothermal, carbon capture and green hydrogen are new developments that can make a big difference in years to come. Who leads in developing these new technologies, and which companies, will reap important economic benefits. They will also support millions of new jobs and economic growth. Luckily, investors are actively supporting these technologies. More investors are starting to believe in energy transitions and are putting their money into developing the associated technologies. Still, increased government support for research and development funding can catalyze these efforts. An opportunity also exists to broaden innovation efforts beyond technology, to a systemic approach that includes dimensions such as market design, social acceptance, equity, regulatory frameworks and business models. Energy systems are deeply interconnected to social issues, so changing them will not be successful if the solutions focus only on technology. Not one solution It is likely that U.N. energy and climate deliberations over the coming months will continue to move in fits and starts. The real work needs to take place at a more practical implementation level, such as in states, provinces and municipalities. If there is one thing we have learned, it is that mitigating climate change will be a long slog, not a one-off political announcement or celebrity endorsement. It requires much more than simply repeating platitudes. Politicians need to show that the many energy transitions emerging are good for economies and communities, and can create long-lasting jobs and tax revenues. While it’s uncontested that the benefits of greenhouse gas mitigation far exceed the cost, it is not always easy to marry this with short-term political cycles.
South Africa’s power generation plans are out of date: an urgent rethink is needed
South Africa’s economy has taken a number of very heavy body blows recently. These include a slowdown due to measures taken to control the spread of COVID-19, on top of increased state dysfunctionality due to corruption. The country has also just experienced the worst riots since it became a democracy in 1994. All have left it struggling financially, while investor confidence has been shaken. The country’s president, Cyril Ramaphosa, and finance minister, Tito Mboweni, have put in place measures to try to soften some of the hardships caused by the pandemic, and more recently the arson and violence. But a host of additional adjustments need to be made – to economic plans as well as budgets. One of these is the country’s power generation and electricity supply programmes. Electricity demand projections are interlinked with economic progress. Changes in the economy therefore have a direct impact on the energy sector. In addition, energy generation technologies are evolving rapidly, affecting available technological choices and associated costs. A reappraisal of the country’s long-term electricity requirements – and a review of technologies best suited under the circumstances – has therefore become a priority. Energy planning South Africa’s energy policy is managed through the Integrated Resource Plan. The document is prepared by a panel of experts and sets out the preferred evolution of the power generation landscape (additions, closures, technologies to be used) based on scenario planning. These plans are supposed to be reformulated every two years. The most recent one was gazetted in 2019. Since then there have been a number of significant developments in the sector. The first revolves around technology, in particular electricity storage, a major enabler of wind and solar as sources of electricity generation. Renewables currently make up only 10.5% of electricity generation in South Africa. But there’s widespread recognition that this needs to be increased. The push factor is that the country needs to reduce its dependency on coal. The pull factor is that it has ample supplies of both wind and sun. The cost of storage is a massive obstacle. Wind and solar can only function at specific times. The way round this is to store some of the electricity in batteries, to be released at times when the sun or wind aren’t available. At the moment building batteries large enough to see the grid through dozens of hours without wind or sun is both impractical and too expensive. But batteries with more capacity are being developed with the use of hydrogen. Better and cheaper storage will make the intermittent renewable electricity generating technologies more viable and increasingly attractive. The other reason the plan needs to be revised is that it would allow South Africa to settle the lingering confusion about possible future nuclear builds. The 2019 plan did not envisage any new nuclear developments until at least 2030. Despite this, and in the face of opposition from various quarters, the government has been encouraging the nuclear sector to engage in preparatory work leading to a new build. In my view this option should be left out of any revised plan. The main reasons are South Africa’s national fiscal shortages – nuclear is very expensive – as well as the ongoing global decline in nuclear technology. The other reason that the plan needs to be revised urgently is the changing patterns of demand. Electricity demand will grow less than projected A number of assumptions that were used to develop the integrated resource plan two years ago are no longer accurate. One has been a drop in electricity demand from the power utility Eskom. This has been driven by slower economic activity as was evident during the COVID-19 lockdowns. In addition, demand has been dampened by steep rises in electricity rates. Power cuts have also been a contributor to the drop in demand. This trend is likely to continue as the move to solar generation accelerates. Mines have been keen to set up their own on-site solar plants and there has been significant growth in solar installations on domestic rooftops and in shopping malls and factories. This will be given further wings by the fact that the government is changing the regulatory environment to make it easier for independent developers to set up power plants up to 100 megawatts. While a quicker than imagined economic recovery is always possible, this would be accommodated in future electricity plan revisions. But even here caution is required. Economic growth only leads to slightly higher electricity demand – an increase that’s always been overestimated in the past. Plugging the gaps in the interim The national power utility Eskom has been unable to provide a steady power supply due to ageing infrastructure and an abnormally high number of breakdowns. This has led to periodic electricity blackouts at times when demand has exceeded supply. To alleviate power shortages in the interim, the Ministry of Mining and Energy launched an initiative to solicit 2,000 MW of emergency power from private developers. But the plans aren’t panning out very well. Most of the capacity awarded under the programme was to a Turkish company that operates a fleet of ships with gas power stations on board. Three ships were to be moored off South Africa’s coast. But the floating power stations have run into major difficulties related to environmental authorisation requirements. There are also court challenges. The remainder of the interim plan was to be taken up by renewable energy based projects. But a new requirement in the plan for emergency power was that wind and solar plants must be able to deliver power continually from 5am until after 9pm. This means that renewable projects require supplementation when there is no sun or wind, making them expensive. The most problematic aspect of the emergency power programme is that it will award 20 year contracts to successful bidders. So a short to medium term power shortfall is to be settled by long term contracts that will supply electricity at considerably higher cost than alternative sources. The emergency
China will no longer build overseas coal power plants – what energy projects will it invest in instead?
Chinese President Xi Jinping recently announced at the UN General Assembly that China “will not build new coal-fired power projects abroad”. Chinese banks have already swung into gear. Three days after Xi’s speech, the Bank of China declared it would no longer provide financing for new coal mining and power projects outside China from the last quarter of 2021. Xi’s statement is expected to affect at least 54 gigawatts of proposed China-backed coal plants that are not yet under construction. Shelving these would save CO₂ emissions equivalent to three months of global emissions. This pledge from the world’s largest public financier of overseas coal plants could usher in a new era of low-carbon development. But that depends on what happens in the countries where China had funnelled money into coal power. Many of these places urgently need new energy infrastructure. Will China’s investments here be redirected to renewable energy – or simply disappear? Chinese support for renewables abroad One positive sign came in the same speech to the UN, when Xi indicated that “China will step up support for other developing countries in developing green and low-carbon energy”. China’s overseas energy investments grew as part of the belt and road initiative. Launched in 2013, Xi’s signature foreign-policy effort increased China’s cooperation with the rest of the world through infrastructure development, unimpeded trade, financial integration and policy coordination. China has continued to provide finance for the belt and road initiative during the pandemic, and investment in renewables made up most (57%) of the country’s financial support for overseas energy projects in 2020 – up from 38% in 2019. Beijing has supported wind and solar projects in more than 20 developing countries since 2013, including Ethiopia and Kenya. And Chinese banks and companies have also expanded their overseas investments in renewable energy over the last decade. A line graph showing Chinese solar and wind energy investments abroad. While the trends are positive, challenges remain. China’s overseas investment policy remains guided by the non-interference principle. This means that Beijing is supposed to let host countries determine the type of energy projects, and only requires Chinese firms to comply with host-country regulations. Research shows that China’s finance for coal in Asia was largely driven by demand in recipient countries. This is because the domestic policies of these countries prioritised improving energy access over reducing emissions, and coal was a cheap and proven source. Inadequate grid infrastructure and politicians sceptical of renewable energy in countries receiving Chinese investment have also hampered development. In Indonesia, business leaders and politicians formed pro-coal lobby groups to influence the design of China-backed projects. China’s new pledge tells prospective recipient countries that coal finance is no longer an option. China must now promote its offer of investment in renewables. Drawing on its domestic experiences, Beijing should provide subsidies or tax cuts to companies willing to build renewable energy projects outside China. Chinese energy developers are often wary of investment risks in developing countries due to their unfamiliarity with local politics. The Chinese government can help by increasing coordination between Chinese companies and local governments, businesses, and communities in host countries. Over the past decade, China has supported many developing countries to increase their energy generating capacity with financing, affordable technology and quick project delivery. China has taken the first step to stop funding coal. It’s now time to adopt policies that support the overseas activities of its renewable energy developers.
Getting more energy from the sun: how to make better solar cells
Global demand for energy is increasing by the hour as developing countries move toward industrialization. Experts estimate that by the year 2050, worldwide demand for electricity may reach 30 terawatts (TW). For perspective, one terawatt is roughly equal to the power of 1.3 billion horses. Energy from the sun is limitless – the sun provides us 120,000 TW of power at any given instant – and it is free. But today solar energy provides only about one percent of the world’s electricity. The critical challenge is making it less expensive to convert photo-energy into usable electrical energy. To do that, we need to find materials that absorb sunlight and convert it into electricity efficiently. In addition, we want these materials to be abundant, environmentally benign and cost-effective to fabricate into solar devices. Researchers from around the world are working to develop solar cell technologies that are efficient and affordable. The goal is to bring the installation cost of solar electricity below US$1 per watt, compared to about $3 per watt today. At Binghamton University’s Center for Autonomous Solar Power (CASP), we are investigating ways to make thin film solar cells using materials that are abundant in nature and nontoxic. We want to develop solar cells that are reliable, highly efficient at converting sunlight to electricity and inexpensive to manufacture. We have identified two materials that have great potential as solar absorbers: pyrite, better known as fool’s gold because of its metallic luster; and copper-zinc-tin-sulfide (CZTS). Seeking the ideal material Today’s commercial solar cells are made from one of three materials: silicon, cadmium telluride (CdTe) and copper-indium-gallium-selenide (CIGS). Each has strengths and weaknesses. Silicon solar cells are highly efficient, converting up to 25 percent of the sunlight that falls on them into electricity, and very durable. However, it is very expensive to process silicon into wafers. And these wafers have to be very thick (about 0.3 millimeters, which is thick for solar cells) to absorb all of the sunlight that falls on them, which further increases costs. Silicon solar cells – often referred to as first-generation solar cells – are used in the panels that have become familiar sights on rooftops. Our center is studying another type called thin film solar cells, which are the next generation of solar technology. As their name suggests, thin film solar cells are made by putting a thin layer of solar absorbent material over a substrate, such as glass or plastic, which typically can be flexible. These solar cells use less material, so they are less expensive than crystalline solar cells made from silicon. It is not possible to coat crystalline silicon on a flexible substrate, so we need a different material to use as a solar absorber. Although thin film solar technology is improving rapidly, some of the materials in today’s thin film solar cells are scarce or hazardous. For example, the cadmium in CdTe is highly toxic to all living things and is known to cause cancer in humans. CdTe can separate into cadmium and tellurium at high temperatures (for example, in a laboratory or housefire), posing a serious inhalation risk. We are working with pyrite and CZTS because they are nontoxic and very inexpensive. CZTS costs about 0.005 cents per watt, and pyrite costs a mere 0.000002 cents per watt. They also are among the most abundant materials in the Earth’s crust, and absorb the visible spectrum of sunlight efficiently. These films can be as thin as 1/1000th of a millimeter. We need to crystallize these materials before we can fabricate them into solar cells. This is done by heating them. CZTS crystallizes at temperatures under 600 degree Celsius, compared to 1,200 degrees Celsius or higher for silicon, which makes it less expensive to process. It performs much like high-efficiency copper indium gallium selenide (CIGS) solar cells, which are commercially available now, but replaces the indium and gallium in these cells with cheaper and more abundant zinc and tin. So far, however, CZTS solar cells are relatively inefficient: they convert less than 13 percent of the sunlight that falls upon them to electricity, compared to 20 percent for more expensive CIGS solar cells. We know that CZTS solar cells have a potential to be 30 percent efficient. The main challenges are 1) synthesizing high-quality CZTS thin film without any traces of impurities, and 2) finding a suitable material for the “buffer” layer underneath it, which helps to collect the electric charges that sunlight creates in the absorber layer. Our lab has produced a CZTS thin film with seven percent efficiency; we hope to approach 15 percent efficiency soon by synthesizing high-quality CZTS layers and finding suitable buffer layers. Pyrite is another potential absorber that can be synthesized at very low temperatures. Our lab has synthesized pyrite thin films, and now we are working to layer those films into solar cells. This process is challenging because pyrite breaks down easily when it is exposed to heat and moisture. We are researching ways to make it more stable without affecting its solar absorbency and mechanical properties. If we can solve this problem, “fool’s gold” could turn into a smart photovoltaic device. In a recent study, researchers at Stanford University and the University of California at Berkeley estimated that solar power could provide up to 45 percent of U.S. electricity by 2050. To meet that target, we need to keep driving down the cost of solar power and find ways to make solar cells more sustainably. We believe that abundant, nontoxic materials are key to realizing the potential of solar power.
‘Digital twins’ can help monitor infrastructure and save us billions
Urban infrastructure – bridges, roads, railways, pipelines, power transmission towers and so on – must be inspected regularly to operate safely. Imagine if we used advanced technologies available to us, such as wireless sensors, mobile apps and machine learning, to remotely inspect and maintain this infrastructure. This could eliminate the need for regular daily inspections, save time and money for engineers and asset owners, and reduce the risks of working on job sites. Everyone has experience of working with smart devices such as mobile phones and iPads. Using these technologies to perform technical and engineering work is a game changer. We have been developing “digital twins” – 3D-visualisation of in-service infrastructure – to monitor infrastructure performance under various service conditions and make intelligent maintenance decisions. The digital model is the twin of the real infrastructure. Wireless sensors on the structure transfer performance data to our computer. We can see the performance of the infrastructure in real time online. What are digital twins and what can they be used for? This is extremely useful for engineers who need to regularly monitor the performance of infrastructure. They make critical maintenance decisions about which structural elements need to be repaired or replaced, and when this must be done, to ensure the infrastructure is safe. How are digital twins created? Digital twins are essentially a digital replica or a virtual model of a process, product or service. The concept of creating digital twins is still relatively new for civil and infrastructure engineers. In the Netherlands, digital twins are being developed for operation at the Port of Rotterdam. A team at the Norwegian University of Science and Technology is working on a digital model of an operating crane. This crane collapse killed one person and seriously injured two others in central Manhattan in 2016. Brendan McDermid/Reuters/AAP To develop digital twins for intelligent infrastructure maintenance we must integrate a variety of disciplines. These include 3D visualisation, wireless technology, structural engineering and Internet of Things. The output is a digital model of the physical infrastructure, which can be seen on a PC, tablet or mobile phone. Looking at their smart device at home or in the office, an engineer can observe all deformations, deflections, cracks or even stresses due to various loads (such as traffic or wind). The intelligent digital twin model can also suggest appropriate maintenance decisions. Cost benefits add up to billions We have more than 7,000 bridges in Victoria alone that need regular inspection. Add all the pipelines, highways, railways and so on, and that’s a huge maintenance program. Trillions of dollars are spent each year on inspecting, monitoring and maintaining infrastructure around the world. The non-profit Volcker Alliance recently warned repair costs of deferred maintenance of the United States’ ageing infrastructure could exceed US$1 trillion, or 5% of the country’s gross domestic product. For local roads across Australia, maintenance and renewal costs between 2010 and 2024 total an estimated A$45 billion. Digitalising the way we look after our infrastructure can make the process more accurate and less costly in the long term than traditional labour-intensive practices. Using a digital twin is expected to produce cost savings of 20-30%. Given the huge costs of monitoring infrastructure – in the US, bridge inspections alone cost US$1.35 billion a year – the potential savings are huge. There are also several indirect benefits for the nation. The COVID-19 crisis has highlighted the importance of reducing crowds in public places. Considering the huge workload on transport infrastructure like highways, buses and rail, any concept that can reduce daily travel is important. Digitalising infrastructure management and maintenance can help by reducing the need for inspectors and technicians to travel to projects. Reduced travel, by reducing emissions, benefits public health and the environment. What is being done in Australia? In Australia, researchers from the School of Engineering at RMIT are developing digital twins for use in intelligent maintenance of almost all infrastructure across the nation. Our current focus is on bridge and port infrastructure. However, soon we’ll be able to use the developed models for railways, water and wastewater pipelines, LNG, oil and gas pipelines, offshore platforms, wind turbines and power transmission towers. RMIT researchers have also developed a cloud-hosted asset management platform, Central Asset Management System (CAMS). It uses discrete condition ratings given to components of infrastructure through inspections. We can use these ratings to develop predictive models to aid proactive planning and decision-making on civil infrastructure. The system is being used commercially for property assets. Many public-private partnership clients are using the system for life-cycle modelling of buildings. Proofs of concept have been completed for bridges, drainage and local council infrastructure. Funded research is in progress for road pavements and rail. We are working on integrating live monitoring of infrastructure to progress the platform towards creation of digital twins. The system is available for trial by any interested infrastructure owners who wish to contact us. This work represents a significant step in developing smart cities. It will help create a safer and healthier community.