Wind Energy’s Swift Growth, Explained

By John Hall
The wind industry is growing quickly around the world, especially in China and the U.S., where the total amount of electricity generated by wind turbines nearly doubled between 2011 and 2017.
All told, about 25 percent of global electricity now comes from renewable sources like hydropower, wind and solar energy.
As a wind energy researcher, I realize it will be hard for the industry to keep up this pace. Yet ample evidence supports widespread predictions that the volume of wind energy will continue to grow quickly—here and abroad, on land and offshore—for reasons that most electricity consumers can support.
Rapid Growth
Wind turbines, which convert moving air into electrical power, currently produce 6.3 percent of the electricity the U.S. consumes. Texas leads the nation overall in terms of the amount of power it gets from wind. Iowa gets a higher share of its electricity from wind turbines than any other state—37 percent.
The U.S. still lags other nations, particularly those in Europe, with offshore wind production. But even on that front, the U.S. has seen growth. The nation's first commercial offshore wind farm, located off the coast of Rhode Island, began operating in 2016. New York state plans to build a much larger offshore farm. And California may soon establish floating offshore wind farms.
#Windpower fact of the day: Four states now generate 30% or more of their electricity using wind energy. https://t.co/IgJpCzrWdN— American Wind Energy (@American Wind Energy)1524078301.0
Some Challenges
Wind is abundant, ubiquitous and free, but sometimes it dies down. Consequently, the energy from wind turbines can't provide power around the clock.
Recent improvements in energy storage technology and turbine efficiency, however, are lowering costs and may potentially reduce the downside of wind's intermittent nature.
Today, wind power faces another challenge: politics. The Trump administration is sending mixed signals regarding the industry. It exited the Paris agreement yet supports wind power growth as part of its "American energy dominance" policy.
Its Advantages
Meanwhile, market forces coupled with widespread concerns over climate change continue to propel the wind industry. Such is the enthusiasm from tech giants, such as Apple and Google, which are proactively seeking to rely on wind energy, rather than fossil fuels.
And this wind rush is creating jobs in manufacturing, services and science. With total generating capacity projected to increase from about 89 gigawatts to more than 400 gigawatts over the next 30 years, the Energy Department says the industry may eventually employ 600,000 American workers.
John Hall is assistant professor of mechanical and aerospace engineering at the The University at Buffalo School of Engineering and Applied Sciences.
Disclosure statement: John Hall receives funding from the National Science Foundation.
Nation's Largest Wind Farm Coming to Oklahoma https://t.co/JFn8pgqTBn @WindEnergyPower @NewWindPower— EcoWatch (@EcoWatch)1519353904.0
Reposted with permission from our media associate The Conversation.
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Trending
Wisdom the mōlī, or Laysan albatross, is the oldest wild bird known to science at the age of at least 70. She is also, as of February 1, a new mother.
<div id="dadb2" class="rm-shortcode" data-rm-shortcode-id="aa2ad8cb566c9b4b6d2df2693669f6f9"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1357796504740761602" data-partner="rebelmouse"><div style="margin:1em 0">🚨Cute baby alert! Wisdom's chick has hatched!!! 🐣😍 Wisdom, a mōlī (Laysan albatross) and world’s oldest known, ban… https://t.co/Nco050ztBA</div> — USFWS Pacific Region (@USFWS Pacific Region)<a href="https://twitter.com/USFWSPacific/statuses/1357796504740761602">1612558888.0</a></blockquote></div>
The Science Behind Frozen Wind Turbines – and How to Keep Them Spinning Through the Winter
By Hui Hu
Winter is supposed to be the best season for wind power – the winds are stronger, and since air density increases as the temperature drops, more force is pushing on the blades. But winter also comes with a problem: freezing weather.
Comparing rime ice and glaze ice shows how each changes the texture of the blade. Gao, Liu and Hu, 2021, CC BY-ND
Ice buildup changes air flow around the turbine blade, which can slow it down. The top photos show ice forming after 10 minutes at different temperatures in the Wind Research Tunnel. The lower measurements show airflow separation as ice accumulates. Icing Research Tunnel of Iowa State University, CC BY-ND
How ice builds up on the tips of turbine blades. Gao, Liu and Hu, 2021, CC BY-ND
While traditional investment in the ocean technology sector has been tentative, growth in Israeli maritime innovations has been exponential in the last few years, and environmental concern has come to the forefront.
theDOCK aims to innovate the Israeli maritime sector. Pexels
<p>The UN hopes that new investments in ocean science and technology will help turn the tide for the oceans. As such, this year kicked off the <a href="https://www.oceandecade.org/" target="_blank" rel="noopener noreferrer">United Nations Decade of Ocean Science for Sustainable Development (2021-2030)</a> to galvanize massive support for the blue economy.</p><p>According to the World Bank, the blue economy is the "sustainable use of ocean resources for economic growth, improved livelihoods, and jobs while preserving the health of ocean ecosystem," <a href="https://www.sciencedirect.com/science/article/pii/S0160412019338255#b0245" target="_blank" rel="noopener noreferrer">Science Direct</a> reported. It represents this new sector for investments and innovations that work in tandem with the oceans rather than in exploitation of them.</p><p>As recently as Aug. 2020, <a href="https://www.reutersevents.com/sustainability/esg-investors-slow-make-waves-25tn-ocean-economy" target="_blank" rel="noopener noreferrer">Reuters</a> noted that ESG Investors, those looking to invest in opportunities that have a positive impact in environmental, social and governance (ESG) issues, have been interested in "blue finance" but slow to invest.</p><p>"It is a hugely under-invested economic opportunity that is crucial to the way we have to address living on one planet," Simon Dent, director of blue investments at Mirova Natural Capital, told Reuters.</p><p>Even with slow investment, the blue economy is still expected to expand at twice the rate of the mainstream economy by 2030, Reuters reported. It already contributes $2.5tn a year in economic output, the report noted.</p><p>Current, upward <a href="https://www.ecowatch.com/-innovation-blue-economy-2646147405.html" target="_self">shifts in blue economy investments are being driven by innovation</a>, a trend the UN hopes will continue globally for the benefit of all oceans and people.</p><p>In Israel, this push has successfully translated into investment in and innovation of global ports, shipping, logistics and offshore sectors. The "Startup Nation," as Israel is often called, has seen its maritime tech ecosystem grow "significantly" in recent years and expects that growth to "accelerate dramatically," <a href="https://itrade.gov.il/belgium-english/how-israel-is-becoming-a-port-of-call-for-maritime-innovation/" target="_blank" rel="noopener noreferrer">iTrade</a> reported.</p><p>Driving this wave of momentum has been rising Israeli venture capital hub <a href="https://www.thedockinnovation.com/" target="_blank" rel="noopener noreferrer">theDOCK</a>. Founded by Israeli Navy veterans in 2017, theDOCK works with early-stage companies in the maritime space to bring their solutions to market. The hub's pioneering efforts ignited Israel's maritime technology sector, and now, with their new fund, theDOCK is motivating these high-tech solutions to also address ESG criteria.</p><p>"While ESG has always been on theDOCK's agenda, this theme has become even more of a priority," Nir Gartzman, theDOCK's managing partner, told EcoWatch. "80 percent of the startups in our portfolio (for theDOCK's Navigator II fund) will have a primary or secondary contribution to environmental, social and governance (ESG) criteria."</p><p>In a company presentation, theDOCK called contribution to the ESG agenda a "hot discussion topic" for traditional players in the space and their boards, many of whom are looking to adopt new technologies with a positive impact on the planet. The focus is on reducing carbon emissions and protecting the environment, the presentation outlines. As such, theDOCK also explicitly screens candidate investments by ESG criteria as well.</p><p>Within the maritime space, environmental innovations could include measures like increased fuel and energy efficiency, better monitoring of potential pollution sources, improved waste and air emissions management and processing of marine debris/trash into reusable materials, theDOCK's presentation noted.</p>theDOCK team includes (left to right) Michal Hendel-Sufa, Head of Alliances, Noa Schuman, CMO, Nir Gartzman, Co-Founder & Managing Partner, and Hannan Carmeli, Co-Founder & Managing Partner. Dudu Koren
<p>theDOCK's own portfolio includes companies like Orca AI, which uses an intelligent collision avoidance system to reduce the probability of oil or fuel spills, AiDock, which eliminates the use of paper by automating the customs clearance process, and DockTech, which uses depth "crowdsourcing" data to map riverbeds in real-time and optimize cargo loading, thereby reducing trips and fuel usage while also avoiding groundings.</p><p>"Oceans are a big opportunity primarily because they are just that – big!" theDOCK's Chief Marketing Officer Noa Schuman summarized. "As such, the magnitude of their criticality to the global ecosystem, the magnitude of pollution risk and the steps needed to overcome those challenges – are all huge."</p><p>There is hope that this wave of interest and investment in environmentally-positive maritime technologies will accelerate the blue economy and ESG investing even further, in Israel and beyond.</p>- 14 Countries Commit to Ocean Sustainability Initiative - EcoWatch ›
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