By Betsy Mason
For decades, climate scientist David Keith of Harvard University has been trying to get people to take his research seriously. He's a pioneer in the field of geoengineering, which aims to combat climate change through a range of technological fixes. Over the years, ideas have included sprinkling iron in the ocean to stimulate plankton to suck up more carbon from the atmosphere or capturing carbon straight out of the air.
Solar geoengineering would involve injecting reflective aerosols from high-altitude planes into the layer of the upper atmosphere known as the stratosphere, which stretches between 10 to 50 kilometers (6 to 31 miles) above Earth's surface. The idea is that the aerosol particles would reflect a small amount of sunlight away from the planet, reducing the amount of heat trapped by greenhouse gases and mitigating some of the effects of climate change.
The planned Stratospheric Controlled Perturbation Experiment will send a balloon carrying scientific instruments in a gondola into the stratosphere. The instruments will release a small amount of material — likely ice or mineral dust — to form a kilometer-long plume of aerosol particles (left). Modified airboat propellers will allow the gondola to maneuver above the plume (middle) and lower instruments into the plume to take repeated measurements of how the particles spread through the stratosphere (right). ADAPTED FROM J.A. DYKEMA ET AL / PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A 2014
David Keith envisions using multiple approaches to combat climate change. The red line shows how the impacts of climate change would worsen with a business-as-usual scenario of unabated burning of fossil fuels and other greenhouse gas emissions. Aggressively cutting emissions bends that curve, and removing carbon from the atmosphere offers further cuts, but there are still consequences from the already high levels of carbon dioxide. In this scenario, solar geoengineering would lessen the impact from existing atmospheric carbon dioxide, effectively carving the top off the curve.<p>Some people think we should use it only as a get-out-of-jail card in an emergency. Some people think we should use it to quickly try to get back to a preindustrial climate. I'm arguing we use solar geoengineering to cut the top off the curve by gradually starting it and gradually ending it.</p><p><strong>Do you feel optimistic about the chances that solar geoengineering will happen and can make a difference in the climate crisis?</strong></p><p>I'm not all that optimistic right now because we seem to be so much further away from an international environment that's going to allow sensible policy. And that's not just in the US. It's a whole bunch of European countries with more populist regimes. It's Brazil. It's the more authoritarian India and China. It's a more nationalistic world, right? It's a little hard to see a global, coordinated effort in the near term. But I hope those things will change.</p>
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By Jo Harper
Only 10% of global energy utility companies are expanding their renewable energy capacity at a faster rate than their gas or coal-fired capacity. That is the main finding of a study by Galina Alova from the Smith School of Enterprise and the Environment at the University of Oxford.
The Matter of Gas<p>The report found that 10% of utilities favored growth in gas-fired power plants, dominated by the US utilities exploiting the country's shale gas reserves, followed by Russia and Germany.</p><p>"Renewables and natural gas often go hand in hand," Alova said, adding that companies often choose both in parallel. "So, it might be just in media reports we are getting this image of investing in renewables, but less coverage on continued investment in gas." </p><p>It might also be the case that gas is viewed as a transition fuel, relatively less carbon emitting and providing load-balancing services to intermittent renewables generation, Alova said.</p><p>Dave Jones, senior electricity analyst for independent climate think tank Ember, agrees with Alova that utilities have hindered the transition by "misunderstanding the future of gas." Utilities have a mindset to build big centralized power plants, replacing a coal power plant with a gas power plant, he said. "Fortunately, most of the gas hype across the world is now dying down, as wind and <a href="https://www.dw.com/en/cheap-solar-energy-prices-explained/a-53590607" target="_blank">solar now provide cheaper options</a> for generating electricity," Jones said.</p>
Green Movement Taking Place<p>Over a fifth of Europe's energy was generated by solar panels and wind turbines in the first half of 2020, according to a report by Ember. Denmark came out on top, generating 64% of its energy from these renewable sources, followed by Ireland (49%) and <a href="https://www.dw.com/en/renewables-make-up-over-half-of-germanys-power-mix/a-52986924" target="_blank">Germany</a> (42%).</p><p>In Ember's half-year review released in July, renewables exceeded fossil fuel generation for the first time ever, producing 40% of the EU's power, with fossil fuels contributing 34%. However, globally only a tenth of all energy was generated by these sources during the first half of 2020. </p><p>Last year saw the use of coal to generate electricity around the world fall by a record 3%. In part due to COVID-19, coal generation in the first half of 2020 again broke records with a drop of 8.3%. In the EU, the drop was higher, as coal energy generation fell by nearly a third.</p>
Slowly Getting There?<p>Utilities have been slow to understand how quickly wind and solar would drop in price, and also how quickly governments would want to move away from coal. "Many utilities have been caught off guard by the speed of the transition, and have suffered financially ever since," said Jones.</p><p>The world this year has generated one-tenth of its electricity from wind and solar, double from the 5% in 2015, and that increase has led to a fall in market share of coal generation, Jones added. </p><p>Valentina Kretzschmar from consultancy Wood Mackenzie says BP's recently announced strategy has created a new industry benchmark. BP plans to increase investment in its low-emission businesses, including renewable energy, by tenfold in the next decade to $5 billion (€4.5 billion) a year, while cutting back oil and gas production by 40%.</p><p>In July, Royal Dutch Shell won a deal to build a wind farm off the coast of the Netherlands, while France's Total has agreed to make several large investments in solar power in Spain and a wind farm off Scotland. Total also bought an electric and natural gas utility in Spain. Shell has said it will <a href="https://www.dw.com/en/mexico-sells-rights-to-19-offshore-oil-fields-for-over-500-million/a-42393559" target="_blank">delay offshore oil fields in the Gulf of Mexico</a> and in the North Sea.</p><p>US giants like Exxon Mobil and Chevron, however, have been slower than their European counterparts to commit to climate goals.</p><p>"I have seen a substantial shift between companies in the fossil fuel clusters toward renewables," Alova said. "This signals that the companies that have been growing fossil fuel portfolios in the earlier time periods might be switching to renewables more recently."</p>
Solar photovoltaic (PV) panels convert sunlight into energy and continue to play an essential role in the fight to stop the climate crisis. As the pioneering panels of the early 2000s near the end of their 30-year electronic lives, however, they are at risk of becoming the world's next big wave of e-waste.
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Researchers at the Department of Energy's Argonne National Laboratory have discovered a cheap, efficient way to convert carbon dioxide into liquid fuel, potentially reducing the amount of new carbon dioxide pumped into the atmosphere.
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BP, the energy giant that grew from oil and gas production, is taking its business in a new direction, announcing Tuesday that it will slash its oil and gas production by 40 percent and increase its annual investment in low-carbon technology to $5 billion, a ten-fold increase over its current level, according to CNN.
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By Jessica Corbett
Federal regulators on Thursday released a pair of decisions expected to impact the expansion of renewable power nationwide—one that was celebrated by environmentalists and clean energy advocates as a crucial win and another that critics warned "could lead to more pollution by propping up fossil fuel power plants."
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By Kimberly White
The City of Houston has committed to 100 percent renewable energy. Mayor Sylvester Turner announced that the city has teamed up with NRG Energy to power all municipal operations with renewable energy beginning in July.
<div id="aea44" class="rm-shortcode" data-rm-shortcode-id="45b3862780fc400f29290a319fcc2f63"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="902176734078017537" data-partner="rebelmouse"><div style="margin:1em 0">Here are the #ClimateFacts about #HurricaneHarvey. https://t.co/lECmNlmbCh</div> — The YEARS Project (@The YEARS Project)<a href="https://twitter.com/YEARSofLIVING/statuses/902176734078017537">1503930669.0</a></blockquote></div>
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By Fino Menezes
April 2020 was the first month ever that renewables generated more electricity than thermal coal in the United States every single day, while across the Atlantic, the United Kingdom's rapid decarbonization of its electricity grid has achieved another significant milestone – completing a whole month (30 days) without coal power for the first time in 138 years.
Renewables Surpass Coal in U.S. Power Generation Every Day in April<p>April 2020 was the first month in U.S. history that renewables generated more electricity than coal on every day of the month. That's based on new data from the U.S. Energy Information Administration (EIA) and compiled by the nonprofit <a href="https://ieefa.org/ieefa-update-renewables-surpass-coal-in-u-s-power-generation-throughout-the-month-of-april-2020/" target="_blank">Institute for Energy Economics and Financial Analysis (IEEFA)</a>.</p><p>The daily consecutive run of renewables over coal began on March 25 and continued for 40 straight days through May 3. That breaks the previous record of just nine continuous days.</p><p>The strong output from utility-scale solar, wind, and hydropower is based on several factors, including low gas prices, warmer weather, new renewable capacity connecting to the grid late last year, and lower power demand because of the coronavirus.</p><p>IEEFA <a href="https://ieefa.org/ieefa-update-renewables-surpass-coal-in-u-s-power-generation-throughout-the-month-of-april-2020/" target="_blank">reported</a>: "Coal's high cost has made it increasingly one of the last fuel choices for many utilities, a trend reflected by its declining market share for electric generation: just 15.3% in April, according to preliminary EIA figures.</p><p>"In January, coal's market share fell below 20% for the first time in many decades — and possibly for the first time in the entire history of the U.S. power industry — ending at 19.9%.</p><p>"EIA figures also show its share continued to erode, falling to 18.3% in February and 17.3% in March. As recently as 2008, coal's market share was above 50% in the months of January, February and March."</p><p>IEEFA had previously <a href="https://ieefa.org/ieefa-update-renewable-generation-is-set-to-surpass-coal-in-2021/" target="_blank"></a><a href="https://ieefa.org/ieefa-update-renewable-generation-is-set-to-surpass-coal-in-2021/" target="_blank">forecasted that power generation from renewables</a> would likely surpass coal-fired generation in 2021, an important milestone in the energy transition that is well underway. But in the first quarter of 2020, renewable generation unexpectedly exceeded coal, and with this strong performance continuing in the second quarter, there is an increasing chance that the milestone could occur this year.</p>
U.K. Goes a Month Without Coal Power for First Time for 138 Years<p>The United Kingdom's rapid decarbonization of its electricity grid has achieved another significant milestone – completing a whole month (30 days) without coal power for the first time in 138 years, <a href="https://ieefa.org/u-k-electricity-goes-coal-free-for-a-month-a-first-in-138-years/" target="_blank">reported</a> The Institute for Energy Economics and Financial Analysis (IEEFA) this week.</p><p>The milestone was reached on Sunday 10 May (U.K.) time and celebrated by National Grid ESO, the organization that runs the grid and is responsible for keeping the lights on nationwide. It was the first time this occurred since coal power was first used on the U.K. power system in January, 1882, at Holborn Viaduct.<br></p><p>Within a few years, there will be no coal generation at all – with the remaining plants shuttered, and one or two converted to gas by 2025. National Grid aims to be able to operate a fully zero emission grid when weather conditions allow from 2025, and is accelerating its adoption of new technologies and management systems that will allow it to side line gas power plants when possible.<br></p><p>Just a few days before the new month-long coal-free milestone, National Grid released its latest end of year planning report outlining the main achievements it has made in the long path to a fully decarbonized grid before 2050.</p><p>"We're really proud of our zero carbon targets," National Grid wrote in a blog a few days earlier. "In May 2019 there was a 2-week period where there was coal free operation of Great Britain's electricity system. This has quickly been beaten after the record breaking sunlight in April."</p><p>It noted that the carbon intensity of the electricity system has halved over the last five years, and is down 60 per cent when compared to 2013. "The recent <a href="https://www.nationalgrideso.com/news/day-life-energy-forecasting-manager" target="_blank">low demand for energy</a> due to COVID-19 has dramatically reduced the use of fossil fuel based generation, and this has been supported by our optimized renewable generation," it says.</p><p>"And as supply changes, so to does demand, as renewables capacity and smart grid functionality increases further to enable the side-lining of gas power plants when possible."</p>
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A solar and battery storage project large enough to power the residential population of Las Vegas received final approval from the Department of the Interior on Monday, despite concerns from some conservationists about the project's impact on the threatened Mojave desert tortoise.
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While the nation struggles to find ways to put money in peoples' pockets and to ramp up the economy so people can get back to work, over $43 billion in low-interest loans earmarked for clean energy projects sits undistributed by the Trump administration, according to The New York Times.
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By Dana Nuccitelli
Environmentalists and renewable energy advocates have long been allies in the fight to keep unchecked industrial growth from irreversibly ruining Earth's climate and threatening the future of human civilization. In their new YouTube documentary "Planet of the Humans," director Jeff Gibbs and producer Michael Moore argue for splitting the two sides. Their misleading, outdated, and scientifically sophomoric dismissal of renewable energy is perhaps the most dangerous form of climate denial, eroding support for renewable energy as a critical climate solution.