by David Schwartzman (his text in bold).
November 17, 2014
Introduction: This article is a mixture of true, half-true and false arguments. It fails to confront two huge challenges, the reality of energy poverty affecting most of humanity living in the global South and the energy requirements required to avoid the worst consequences of climate change.
(Note: original article is located here: link)
Abundant Clean Renewables? Think Again!
Sunday, 16 November 2014
By Almuth Ernsting, Truthout | News Analysis
Although “renewable” energy is growing faster than ever before, it is neither carbon neutral, “clean” nor sustainable. We need to transform into low-energy societies that meet human – not corporate – needs.
Renewable energy is growing faster than ever before. Sure, some countries are lagging behind, but others are setting widely praised records. Germany has installed over 24,000 wind turbines and 1.4 million solar panels, and renewables generate 31 percent of the country’s electricity on average – and as much as 74 percent on particularly windy or sunny days.According to the German government, 371,400 jobs have been created by renewable energy. Norway generates 99 percent of its electricity from renewable energy. Denmark already generates 43 percent of electricity from renewables and aims to phase out fossil fuel burning by 2050.
Many view such news as rays of hope in a rapidly destabilizing climate. We all need some good news – but is renewables expansion really the good news people like to think? Can we really put our hopes for stabilizing the climate into trying to simply replace the energy sources in a growth-focused economic and social model that was built on fossil fuels? Or do we need a far more fundamental transition towards a low-energy economy and society?
Yes, we do need a transition to lower energy consumption in the global North, especially in the U.S., with its wasteful consumption, but simultaneously a transition to higher energy consumption in the global South, now bearing the human costs of energy poverty, a transition powered by wind/solar technologies. See publications and discussion at: solarUtopia.org and “Confronting Not Only Climate Collapse But Energy Poverty” at link. Now humanity consumes the equivalent of 18 trillion watts. Assuming a conservative minimum of 3.5 kilowatt/person to reach the world standard of high life expectancy will now require 3.5 x 7 billion = 25 trillion watts.
Here’s the first problem with celebratory headlines over renewables: Record renewable energy hasn’t stopped record fossil fuel burning, including record levels of coal burning. Coal use is growing so fast that the International Energy Authority expects it to surpass oil as the world’s top energy source by 2017.
Perhaps the 1,500 gigawatts of electricity produced from renewables worldwide have prevented a further 1,500 gigawatts of fossil fuel power stations? Nobody can tell. It’s just as possible that renewables have simply added 1,500 gigawatts of electricity to the global economy, fueled economic growth and ever-greater industrial resource use. In which case, far from limiting carbon dioxide emissions worldwide, renewables may simply have increased them because, as discussed below, no form of large-scale energy is carbon neutral.
Yes, carbon emissions must be rapidly and radically reduced, starting with the highest carbon footprint fuels (coal, tar sands, natural gas because of its direct leakage to the atmosphere, and biofuels) to have any chance of avoiding catastrophic climate change.
As long as energy sources that are as carbon-intensive and destructive as fossil fuels are classed as “renewable,” boosting renewable energy around the world risks doing more harm than good [italics added].
It all depends what so-called “renewable” energy is boosted!; see further comments.
Germany’s Energy Transition illustrates the problem: Wind turbines and solar panels have certainly become a widespread feature of Germany’s landscape. Yet if we look at Germany’s total energy use (including heating and transport), rather than just at electricity, energy classed as renewable accounts for just 11.5 percent. The majority, 87.8 percent, of Germany’s energy continues to come from fossil fuels and nuclear power (with waste incineration accounting for the difference of 0.7 percent). Coal consumption, which had been falling until 2008, has been rising again since then. Germany remains the European Union’s (EU) top coal consumer. Net electricity exports are being blamed for the rise in coal burning and carbon dioxide emissions, yet they account for just 5 percent of Germany’s electricity – and electricity accounts for less than half of the country’s energy use. The picture looks even worse when one examines the mix of energy classed as renewable in Germany: Solar photovoltaic (PV) makes up 11.5 percent of renewables, wind, 16.8 percent. The bulk of it – 62 percent – comes from bioenergy, much of which is far from low carbon or sustainable. It includes biofuels, many of them made from imported soya and palm oil that are being expanded at the expense of tropical forests and peatlands and that destroy the livelihoods of small farmers, indigenous and other forest dependent peoples worldwide. It includes biogas made from 820,000 hectares of corn monocultures in Germany – a key driver for biodiversity loss in the country. And it includes wood pellets linked to forest degradation across Central Europe. On closer examination, therefore, 24,000 wind turbines and 1.4 million solar panels have scarcely made a dent in Germany’s fossil fuel burning and carbon emissions. Norway’s situation is unique in that virtually all of the country’s electricity is generated from hydro dams, which were gradually expanded over the course of more than a century. Fossil fuels (mostly oil) still surpass renewable energy in Norway’s overall energy mix (with electricity accounting for less than half of the total), though only marginally so, and Norway’s economy remains heavily dependent on oil and gas exports. Norway’s own hydro dams – many of them small-scale – have raised little controversy but the same cannot be said for Norway’s efforts to export this model to other countries. The Norwegian government and the state-owned energy company Statkraft have been at the forefront of financing controversial dams and associated infrastructure in Laos, India, Malaysian Borneo and elsewhere. One example is Statkraft’s joint venture investment in a new dam in Laos that has displaced 4,800 people and is causing flooding, erosion, and loss of fisheries and land on which people relied for growing rice. Another example is Norwegian aid for transmission lines for mega-dams in Sarawak, a Malaysian province in Borneo which has seen vast areas of tropical rainforest – and the livelihoods of millions of indigenous peoples – sacrificed for palm oil, logging and also hydro power. One dam alone displaced 10,000 people and at least 10 more dams are planned, despite ongoing resistance from indigenous peoples. Far from being climate-friendly, hydro dams worldwide are associated with large methane emissions – with one study suggesting they are responsible for 25 percent of all human-caused methane emissions and over 4 percent of global warming. The disastrous consequences of Norway’s global hydro power investment illustrates the dangers of the simplistic view that anything classed as renewable energy must be climate-friendly and merits support.
What about the much-heralded renewable transition of Denmark? There coal use is falling and around 21 percent of total energy is sourced from renewables. Denmark holds the world record for wind energy capacity compared to population size. Unlike many other countries where wind energy is firmly controlled by large energy companies, Denmark has seen strong support for locally owned wind energy cooperatives, widely considered an inspiring example of clean, community-controlled energy. Nonetheless, wind energy in Denmark accounted for just 3.8 percent of Denmark’s total energy use in 2010.
Bioenergy accounts for a far greater percentage of Denmark’s “renewable energy” than does wind – and indeed for a greater share in the country’s overall energy mix than is the case in any other European country. As in Germany, Denmark’s bioenergy includes biofuels for transport, which studies show tend to be worse for the climate than equivalent quantities of oil once all the direct and indirect emissions from deforestation, peatland destruction and other land use change associated with them are accounted for. And it includes wood pellets, with Denmark being the EU’s, and likely the world’s, second biggest pellet importer after the United Kingdom. Most of those pellets come from the Baltic states and Russia, from countries where clear-cutting of highly biodiverse forests is rampant. Studies show that burning wood from whole trees can be worse for the climate than burning coal over a period of decades or even centuries.
Thus, on closer inspection, many of the “great renewable energy successes” don’t look so great after all. Clearly, the current catch-all definition of “renewables” is a key problem: Defining methane-spewing mega-dams, biofuels, which are accelerating deforestation and other ecosystem destruction, or logging forests for bioenergy as “renewable” helps policy makers boost renewables statistics, while helping to further destabilize planetary support systems. As long as energy sources that are as carbon-intensive and destructive as fossil fuels are classed as “renewable,” boosting renewable energy around the world risks doing more harm than good.
Yes, all excellent points!
A saner definition of “renewable energy” clearly is vital but would it open the door toward 100 percent clean and plentiful energy? Comparing the rate of wind energy expansion in Denmark and wind and solar power expansion in Germany with the tiny contribution they make to both countries’ total energy supply indicates otherwise [italics added].
Not really, the tiny percentage simply means that the creation of wind/solar power capacity must be accelerated! The potential to replace the present unsustainable infrastructure is huge (see solarUtopia.org). They can be realized, not with “Business as Usual, Relying on the Capitalist Market” but rather with radical changes in both the physical and political economy of 21st capitalism. These changes will only happen with much stronger climate justice mass movements, from the local to the transnational.
Wind and solar power require far less land per unit of energy than biomass or biofuels, but the area of land needed to replace fossil fuel power stations with, say, wind turbines is vast nonetheless. According to a former scientific advisor to the UK government, for example, 15 offshore wind turbines installed on every kilometer of the UK coastline would supply just 13 percent of the country’s average daily energy use. And offshore turbines are more efficient than onshore ones.
On the alleged challenge regarding land area for wind power, hear what Mark Jacobson says in: link. Specifically on how wind farms and agriculture can coexist.
Researchers agree that the life-cycle impacts of wind and solar power on the climate and environment are definitely smaller than those of fossil fuels, as long as turbines and panels are sensibly sited (not, for example, on deep peat). But this doesn’t mean that the impacts are benign. Generating that 13 percent of UK energy from offshore wind would require wind turbines made of 20 million tons of steel and concrete- more than all the steel that went into US shipbuilding during World War II. Steel manufacturing is heavily dependent on coal, not just as a fuel for the furnaces but because it is needed to enrich the raw material, iron ore, with carbon to make it stable. And concrete is hardly “carbon neutral” either – cement (a key component) accounts for 5 percent of global carbon dioxide emissions.
The life-cycle impacts are captured in the CO2 emission and high Energy Return over Energy Invested (EROEI) values for wind/solar, especially for off-shore wind, showing they have much lower CO2 emissions than fossil fuels. With improvements in wind, especially off-shore (floating turbines) the concrete requirements can be much reduced. As far as the need for coal to make steel, new technologies can also greatly reduce this requirement, see link (“Can We Make Steel Without Coal?”, posted on April 24, 2013). New research points to a technology without using carbon as the reductant (link; Study: new steel production method cuts out carbon dioxide emissions. posted on May 9, 2013, citing Allanore, A. et al., 2013, “A new anode material for oxygen evolution in molten oxide electrolysis.” Nature 497: 353–356).
Solar PV panels are up to four times as energy and carbon-intensive to produce as wind turbines: Aluminum – used to mount and construct solar panels – is about as carbon and energy-intensive as steel. Silicon needs to be smelted at 2,000 degrees Celsius and materials used to replace silicon have an even higher environmental footprint. Then there’s an array of highly toxic and corrosive chemicals used during manufacturing. Yet with regards to pollution, building wind and marine turbines is likely worse than making solar panels, because efficient and lasting turbine magnets rely on rare earth mining and refining. One 5-megawatt turbine requires a ton of rare earths, the mining and refining of which will leave behind 75 cubic meters of toxic acidic waste water and one ton of radioactive sludge. Two-thirds of the world’s rare earths are refined in one town in China, where people have become environmental refugees and virtually all who remain suffer from ill health associated with toxic chemicals and radiation. In the quest for “clean energy” rare earths mines are being sought and opened around the globe. The only US rare earths mine, Molycorp’s in California, has been reopened, after having been shut down due to a long history of repeated spills of toxic and radioactive waste. Since reopening, the operators have already been fined for spilling yet more hazardous waste.
Zero-carbon, clean energy? Well, no. And yet, there are no large-scale energy sources with lower carbon emissions and less harmful environmental impacts than wind and solar power. As one scientist argues from the perspective of thermodynamics: “To talk about ‘renewable energy’ or ‘sustainable energy’ is an oxymoron, as is ‘sustainable mining’ or ‘sustainable development.’ The more energy we use, the less sustainable is humanity.” [italics added]
This quote is from Steven Smith’s article, posted at: link. His argument is based on a confused understanding of the 2nd law of thermodynamics. Of course renewable referring to energy does not mean reusing the same energy, rather the nuclear fusion reactor 93 million miles away, the sun, continuously renews the supply of low entropy energy which after doing work ends up a waste heat dissipated into space, as a very good approximation is non-incremental to the natural flux. For a detailed critique of this argument which is very similar to Georgescu-Roegen’s so-called 4th law of thermodynamics see my The Limits to Entropy: the Continuing Misuse of Thermodynamics in Environmental and Marxist Theory, 2008, Science & Society v. 72, No.1, 43-62, posted at link.
“As global wind/solar power grows and replaces all other energy sources, humanity will have a much increased capacity to not only mitigate global warming, but also reduce mining with recycling of materials powered by this energy supply.
The energy base of the global physical economy is critical: global wind/solar power will pay its “entropic debt” to space as non-incremental waste heat, unlike its unsustainable alternatives. …The critical metric for economic growth should be its overall ecological and health impacts with respect to the artificial and natural environments, including of course its carbon footprint, and not simply the level of material production, whether measured by spending or some physical unit such as mass. … Further, with solarization and decarbonation of global energy supplies, recycling and industrial ecologies powered by wind/solar power will greatly reduce the need for mining … a global solar power infrastructure can increase material production and consumption as needed, without the negative impacts now witnessed by unsustainable capital reproduction powered by fossil fuels and nuclear energy. … Further, with solarization and decarbonation of global energy supplies, recycling and industrial ecologies powered by wind/solar power will greatly reduce the need for mining. For example, recycling rates of the rare earth metals, including neodymium used in wind turbines, are currently very low, less than 1% (Reck and Graedel, 2012). Increasing these rates, as well as implementing alternative technologies, could greatly reduce mining for these and other metals used in modern technologies. A growing renewable energy capacity should be dedicated to the cleanup and repair of the biosphere after many years of assault by the MIC, as well as the imperative need to sequester carbon dioxide from the atmosphere to reach the safe limit of less than 350 ppm. In other words a global solar power infrastructure can increase material production and consumption as needed without the negative impacts now witnessed by unsustainable capital reproduction powered by fossil fuels and nuclear energy (Schwartzman 2014, 238–239).” (from Schwartzman, David. 2014. “Is Zero Economic Growth Necessary to Prevent Climate Catastrophe?” Science & Society 78 (2): 235–240.)
We certainly need to swiftly end fossil fuel burning and the destruction of ecosystems and that will require us to rely on the least harmful energy sources such as wind and solar power. But the myth of plentiful “clean” energy stops us from focusing on the far deeper changes needed – a transformation toward a low-energy society. A depressing conclusion? Not necessarily. As UK climate change campaigner and author George Marshall has pointed out, we could cut flights (and probably all transport emissions) and slash energy used for home heating by 80 percent overnight by going back to the way people used to live as short a time ago as 1972, provided we used home insulation and efficient boiler technology developed since then. Instead, 40 years of efficiency gains have been wiped out by ever-greater consumption. Yet UK “personal satisfaction” surveys show that people’s sense of satisfaction or happiness peaked in 1970. Once people’s basic needs for energy are met, rising energy use remains vital for corporate profits and economic growth, but not for people’s quality of life. Most readers will have never lived in a low-energy society. Imagining what such a society might look like and how to move toward the transformation required to get there, and to overcome the corporate interests that depend on profits from ever rising energy use, must be priorities for anyone aware of the seriousness of climate change. Daunting no doubt, but once we’ve abandoned faith in plentiful “clean” energy, we can finally make a start. [italics added]
Recognizing the welcome impact of energy efficient technologies, this prescription of a low-energy society for most of humanity living in the global South will condemn them to even more misery than now, especially since humanity needs more energy consumption than the present level! I wrote: “taking into account the near future context for energy transition, the ever-mounting threat of catastrophic climate change… the following challenges make 3.5 kW/person a conservative estimate:
1. the energy required for carbon sequestration from the atmosphere into the soil and crust to bring down the atmospheric CO2 level below 350 ppm (including a very ambitious program for reacting carbon dioxide and water with mafic crust to bury carbonates; this is not clean coal or releasing dissolved calcium and bicarbonates into the ocean!);
2. the energy required to clean up the biosphere, notably toxic metals and other chemical and radioactive waste from the nuclear weapons, energy, and chemical industries—a heritage of its long-term assault from the MIC; and,
3. the energy required for adaptation to ongoing climate change, especially by the global South with its disproportionate impacts.
All three imperatives will require very significant energy supplies from wind/solar development, incremental to present uses. The actual level of this increment needs study but some preliminary estimates are now available.” David Schwartzman, 2014, “My Response to Trainer,” Capitalism Nature Socialism 25(4): 109-115.
Almuth Ernsting helped to found Biofuelwatch in 2006. She has researched and published about a wide range of issues related to bioenergy, including the climate, social and biodiversity impacts of biofuels and wood-based biomass, public health impacts of biomass and biofuel power stations and the science and policy debate related to proposed use of biomass for geoengineering, especially biochar and Bioenergy with Carbon Capture and Storage.