Solar Energy
Study finds plants would grow well in solar cell greenhouses
![Study finds plants would grow well in solar cell greenhouses Study finds plants would grow well in solar cell greenhouses](https://www.spxdaily.com/images-hg/solar-cell-greenhouses-hg.jpg)
A recent study shows that lettuce can be grown in greenhouses that filter out wavelengths of light used to generate solar power, demonstrating the feasibility of using see-through solar panels in greenhouses to generate electricity.
“We were a little surprised – there was no real reduction in plant growth or health,” says Heike Sederoff, co-corresponding author of the study and a professor of plant biology at North Carolina State University. “”It means the idea of integrating transparent solar cells into greenhouses can be done.””
Because plants do not use all of the wavelengths of light for photosynthesis, researchers have explored the idea of creating semi-transparent organic solar cells that primarily absorb wavelengths of light that plants don’t rely on, and incorporating those solar cells into greenhouses. Earlier work from NC State focused on how much energy solar-powered greenhouses could produce. Depending on the design of the greenhouse, and where it is located, solar cells could make many greenhouses energy neutral – or even allow them to generate more power than they use.
But, until now, it wasn’t clear how these semi-transparent solar panels might affect greenhouse cropsTo address the issue, researchers grew crops of red leaf lettuce (Lactuca sativa) in greenhouse chambers for 30 days – from seed to full maturity. The growing conditions, from temperature and water to fertilizer and CO2 concentration, were all constant – except for light.
A control group of lettuces was exposed to the full spectrum of white light. The rest of the lettuces were dived into three experimental groups. Each of those groups was exposed to light through different types of filters that absorbed wavelengths of light equivalent to what different types of semi-transparent solar cells would absorb.
“The total amount of light incident on the filters was the same, but the color composition of that light was different for each of the experimental groups,” says Harald Ade, co-corresponding author of the study and the Goodnight Innovation Distinguished Professor of Physics at NC State.
“Specifically, we manipulated the ratio of blue light to red light in all three filters to see how it affected plant growth,” Sederoff says.
To determine the effect of removing various wavelengths of light, the researchers assessed a host of plant characteristics. For example, the researchers paid close attention to visible characteristics that are important to growers, grocers and consumers, such as leaf number, leaf size, and how much the lettuces weighed. But they also assessed markers of plant health and nutritional quality, such as how much CO2 the plants absorbed and the levels of various antioxidants.
“Not only did we find no meaningful difference between the control group and the experimental groups, we also didn’t find any significant difference between the different filters,” says Brendan O’Connor, co-corresponding author of the study and an associate professor of mechanical and aerospace engineering at NC State.
“”There is also forthcoming work that delves into greater detail about the ways in which harvesting various wavelengths of light affects biological processes for lettuces, tomatoes and other crops,” Sederoff says.
“”This is promising for the future of solar-powered greenhouses,” Ade says. “Getting growers to use this technology would be a tough argument if there was a loss of productivity. But now it is a simple economic argument about whether the investment in new greenhouse technology would be offset by energy production and savings.””
“Based on the number of people who have contacted me about solar-powered greenhouses when we’ve published previous work in this space, there is a lot of interest from many growers,” O’Connor says. “I think that interest is only going to grow. We’ve seen enough proof-of-concept prototypes to know this technology is feasible in principle, we just need to see a company take the leap and begin producing to scale.””
Solar Energy
Argonne to lead National Energy Storage Research Hub
![Argonne to lead National Energy Storage Research Hub Argonne to lead National Energy Storage Research Hub](https://www.spxdaily.com/images-hg/argonne-chemical-fuel-cycle-technologies-glove-box-hg.jpg)
Argonne to lead National Energy Storage Research Hub
by Clarence Oxford
Los Angeles CA (SPX) Sep 05, 2024
The U.S. Department of Energy (DOE) has selected Argonne National Laboratory to lead the newly established Energy Storage Research Alliance (ESRA), a national hub focused on advancing energy storage technologies. The ESRA, co-led by DOE’s Lawrence Berkeley National Laboratory (Berkeley Lab) and Pacific Northwest National Laboratory (PNNL), is one of two new Energy Innovation Hubs announced by the DOE.
Bringing together nearly 50 leading researchers from three national laboratories and 12 universities, ESRA aims to address the most critical challenges in battery technology, such as safety, high-energy density, and the development of long-duration storage solutions using cost-effective and abundant materials. The initiative is designed to push the boundaries of energy storage science, fostering innovation and strengthening the competitive edge of the U.S. in this crucial field.
“The demand for high-performance, low-cost and sustainable energy storage devices is on the rise, especially those with potential to deeply decarbonize heavy-duty transportation and the electric grid,” stated Shirley Meng, ESRA director and chief scientist at the Argonne Collaborative Center for Energy Storage Science. “To achieve this, energy storage technology must reach levels of unprecedented performance, surpassing the capabilities of current lithium-ion technology. The key to making these transformative leaps lies in a robust research and development initiative firmly grounded in basic science.”
Leveraging decades of investment in fundamental science, ESRA will focus on transformative discoveries in materials chemistry, a deeper understanding of electrochemical processes at the atomic level, and establishing the scientific foundations necessary for major advancements in energy storage technology.
“ESRA creates an energy storage research ecosystem with the mission to rapidly innovate, shorten the time between basic discovery and technology development, and train the next-generation workforce,” commented Bryan McCloskey, ESRA deputy director for scientific thrusts and a faculty engineer at Berkeley Lab.
The success of ESRA’s efforts will lead to the development of high-energy batteries that are fire-resistant, capable of providing long-duration storage for multiple days, have a lifespan of several decades, and are constructed from low-cost, widely available materials.
“ESRA will pave the way for innovative energy storage solutions that drive both U.S. prosperity and security,” said Argonne Director Paul Kearns. “As the lead laboratory for ESRA under the Department of Energy’s Office of Science, Argonne takes pride in spearheading this collaborative effort that unites world-leading experts and taps the impressive scientific resources available in national labs and academia.”
The DOE has committed up to $62.5 million in funding for ESRA over the next five years.
In addition to its research goals, the Argonne-led hub will prioritize training a diverse, next-generation battery workforce to meet future manufacturing demands. This will be achieved through innovative training programs that involve industry, academia, and government partnerships.
“Cultivating a diverse workforce dedicated to safeguarding America’s energy resilience is key to ESRA’s mission,” noted Wei Wang, ESRA deputy director for crosscuts and director of the Energy Storage Materials Initiative at PNNL. “Through our strategic equity and inclusion initiatives, we plan to create a robust training ground for energy storage science from the undergraduate to postdoctoral levels.”
With Berkeley Lab and PNNL as co-leads, the ESRA collaboration brings together comprehensive expertise across the energy storage spectrum. Their state-of-the-art capabilities in technology discovery, modeling and simulation, and materials synthesis and characterization complement those of Argonne, setting the stage for significant advancements in energy storage.
Argonne is joined by 14 partners in this initiative, all of whom are deeply involved in ESRA’s scientific endeavors, governance, strategic development, and the training of the next generation of battery scientists and engineers. This collaboration among national laboratories and universities is vital for discovering new materials, accelerating the development of technology, and commercializing new energy storage innovations.
Related Links
Argonne Collaborative Center for Energy Storage Science
Powering The World in the 21st Century at Energy-Daily.com
Solar Energy
UN’s Guterres says China-Africa ties can drive ‘renewable energy revolution’
![UN’s Guterres says China-Africa ties can drive ‘renewable energy revolution’ UN’s Guterres says China-Africa ties can drive ‘renewable energy revolution’](https://www.spxdaily.com/images-hg/solarcell-spix-hg.jpg)
UN’s Guterres says China-Africa ties can drive ‘renewable energy revolution’
by AFP Staff Writers
Beijing (AFP) Sept 5, 2024
United Nations Secretary-General Antonio Guterres told African leaders Thursday that expanding ties between China and the continent could “drive the renewable energy revolution”.
Guterres and more than 50 African leaders are attending this week’s China-Africa forum, according to state media.
Guterres told the gathering that “China’s remarkable record of development — including on eradicating poverty — provides a wealth of experience and expertise”.
“It can be a catalyst for key transitions on food systems and digital connectivity,” he said.
“And as home to some of the world’s most dynamic economies, Africa can maximise the potential of China’s support in areas from trade to data management, finance and technology,” Guterres added.
Guterres also told the leaders it was time to correct “historic injustices” against the continent.
“It is outrageous… that the continent of Africa has no permanent seat on the Security Council,” he said.
Related Links
Solar Energy
Major Qatari plant to double solar capacity by 2030: minister
![Major Qatari plant to double solar capacity by 2030: minister Major Qatari plant to double solar capacity by 2030: minister](https://www.spxdaily.com/images-hg/west-china-desert-huanghe-hydropower-hhsd-pv-solar-farm-hg.jpg)
Major Qatari plant to double solar capacity by 2030: minister
by AFP Staff Writers
Doha (AFP) Sept 1, 2024
A large new solar plant planned in Qatar will double the Gulf emirate’s previously projected renewable energy capacity by 2030, Qatari Energy Minister Saad al-Kaabi announced on Sunday.
The photovoltaic farm, which will be built in the Dukhan area some 80 kilometres (50 miles) west of the capital Doha, will increase the gas-rich state’s solar production capacity to four gigawatts by the end of the decade, Kaabi said.
The plant “that will be established in Dukhan area will produce 2,000 megawatts, which is twice more than the capacity of Qatar’s production of solar energy of the current projects,” the minister, who is also chief executive of state-owned QatarEnergy, said.
In October 2022, Qatar inaugurated its first large-scale solar farm at al-Kharsaah, west of Doha. The emirate announced in August of the same year another solar project with two plants at Ras Laffan in the north.
Through the combined projects, including at Dukhan, Qatar would achieve “4,000 megawatts of clean energy by 2030”, Kaabi said.
This will “constitute 30 percent of the total production of energy of the state of Qatar” with a yearly reduction of “4.7 million tonnes of CO2 emissions,” he added.
Kaabi said the existing projects should produce 1.7 gigawatts of energy “in first quarter of next year, or early next year”.
The energy minister also announced plans to more than double Qatar’s urea production making the country the largest producer of the fertiliser in the world by the end of the decade.
He said Qatar would “maximise the production of chemical fertilisers” through “a complex with global standards” which would “increase our production capacity from 6 million tonnes annually to more than 12.4 million tonnes annually”.
Qatar is one of the world’s top liquefied natural gas producers alongside the United States, Australia and Russia. Natural gas is a major ingredient in urea manufacturing.
In February, Qatar announced plans to expand its output from its North Field project, saying it will boost capacity to 142 million tonnes per year before 2030.
Over the past year, Qatar has inked a series of long-term LNG deals with France’s Total, Britain’s Shell, India’s Petronet, China’s Sinopec and Italy’s Eni among others.
csp/dcp
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