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How manufacturers can transition to 100% renewable electricity

How manufacturers can transition to 100% renewable electricity

Manufacturing and other industrial users account for around a third of the world’s energy consumption, according to the International Energy Agency(1). Electricity is a central element of that. If all the power consumed by factories and industrial plants came from renewable sources, it would make a sizeable contribution to tackling climate change.

It is a tough target, but one that companies are increasingly signing up to. The RE100 initiative, for example, has seen more than 400 corporations commit to 100% renewable electricity use across their operations. How they reach that goal will depend on many factors, including what they are making and where.

 

Switching to renewable electricity

“Organisations with lighter electricity needs and stable finances will be best positioned to transition to renewables. Companies with high electricity demand, like furnaces for glass, smelting or other large-scale heating applications and companies with very large footprints – such as expansive warehouses and assembly operations – may have more difficulty,” says Paul Holdredge, Director for Industrials and Transport at consultancy Business for Social Responsibility (BSR).

COP28 president-designate Dr Sultan Al-Jaber told the Adipec conference in Abu Dhabi in early October(2) that heavy industries may be hard to decarbonise but added “We know that solutions exist, and all industries can and must respond.”

The prospect of switching to renewable electricity has become far easier due to recent dramatic cost reductions. According to the International Renewable Energy Agency (IRENA), the price of solar photovoltaic power in 2010 was typically 710% higher than the cheapest fossil fuel, but by 2022 it was 29% cheaper(3). Currently electricity accounts for around 20% of final energy use in manufacturing, according to the International Renewable Energy Agency, and this is only expected to increase.

 

The manufacturing challenge

But it is not just the price of renewable energy, low as it is, that dictates a manufacturer’s ability to move to 100% renewable energy. Both the required initial capital investment and first-mover disadvantage—where it costs pioneers more than those that follow them to deploy new technologies—can significantly slow down a fully renewable transition. Not to mention the lack of availability of certain renewables in certain geographies and the fact that the appropriate infrastructure must be in place for this energy to be delivered—something no one company can do on its own.

Manufacturing requires an enormous amount of electricity in comparison to offices. In some countries or regions where the supply of renewable electricity is limited, like Japan, Taiwan, and Singapore, it is much more expensive than electricity produced by traditional means, placing a significant future cost burden on companies that purchase renewable electricity.

Epson is working to popularize the use of renewable electricity, despite the certainty of short-term cost increases. The company is advancing investment in sustainability to enrich communities and invest in future generations to create social value.

 

Going local

Wherever they are in the world, with whatever types of renewable energy available to them, companies need to adapt to local, national, and global circumstances. Seiko Epson, based in Japan, has done just that. Having switched to 100% renewable electricity for all its sites in Japan in 2021, it will complete the transition to 100% renewable electricity globally by the end of 2023(4). This goal has been made achievable through steady implementation of decarbonization targets and the use of renewable electricity since 2018.

In Nagano Prefecture, Japan, for example, where water sources are abundant, it relies on hydroelectric power. But in the Tohoku area, where it has a semiconductor fabrication plant, it uses hydropower and geothermal heat from the Ou mountains.

It is taking a similar approach outside Japan. In the Philippines, it taps into local geothermal and hydroelectric sources. While in Indonesia, it uses yet another renewable source—biomass power.

“We have used locally produced energy wherever possible,” says Junichi Watanabe, Managing Executive Officer General Administrative Manager, Production Planning Division, whose role encompasses the promotion of Epson’s procurement strategies in the supply chain, including the use of renewable electricity. “Rather than using energy generated in faraway countries, using a particular region’s abundant renewable resources brings many benefits, such as improving energy self-sufficiency and creating jobs.”

In addition to purchasing renewable electricity, Epson co-creates and develops other power sources through continuous renewable electricity purchases. In partnership with Nagano Prefecture and Chubu Electric Power Miraiz Company, Inc., the company began support of hydroelectric power plants in Nagano Prefecture. Two are already in operation (totalling 5,770 kilowatts) and another is scheduled to begin operation in 2024. That number is expected to increase to five by 2025.

Such targets can help a company stand out from the crowd. “Based on our research, setting a near-term goal for 100% renewable electricity use is an example of leadership and a differentiator. Some companies also have roadmaps to transition over longer time periods,” says Holdredge.

 

Among the practical methods companies should consider are:

• Sourcing renewable electricity from local suppliers via contracts with electricity suppliers – the ability to do this will depend on the rules in a particular country but, if it is possible, a company can be confident its electricity is only coming from renewable sources.

• Generating electricity on-site, via rooftop solar panels or, if space allows, wind turbines. Even if they do not generate all the power needed, they can still make a useful contribution.

• Develop battery storage facilities. A common concern about renewable electricity is the risk of supply being interrupted when the wind isn’t blowing or the sun isn’t shining, but storage technology offers a viable way to address that.

 

When it comes to solar power generation systems, Epson’s sites also decide whether to adopt self-investment or power purchase agreement (PPA) based on the individual circumstances of each country or region. The solution will vary from company to company. But most manufacturers are likely to find a combination of these elements will go a long way to reaching their renewable electricity goals.

What’s more, many manufacturers like Epson realize that their indirect GHG emissions from their entire value chain (Scope 3) are much greater than the GHG emissions from their own electricity use (Scope 2). As such, by reducing the sector’s Scope 2 emissions using renewable energy—something the sector can do independently—is likely to have a far greater impact on society. Setting goals early and demonstrating a company’s stance toward solving climate change is the key to co-prosperity with suppliers and a sustainable society.

“For large companies the return on investment is there to make the case for investment in renewables. For smaller companies this can also be true, but it depends on the geography. Government incentives can only speed up transition which is sorely needed,” says Christy Slay, Chief Executive Officer of The Sustainability Consortium.

 

The future for greener manufacturing

There are big gains for humanity if climate change can be addressed, but for manufacturing companies and their shareholders the best approach could also deliver commercial gains.

Consumers and investors are increasingly likely to reward companies with greener credentials, making it an essential part of long-term market positioning. In addition, greater use of renewables and greater self-generation can make a company more resilient to volatile electricity prices on the open market.

“Reaching 100% renewable is tough but pushing to get as close as possible, as soon as possible should be every company’s focus right now,” says Slay. “Epson has managed to stay one step ahead of the industry and is setting an example not only to Japan but to the world.”

 

 


 

 

Source  Reuters

Cement Energy Storage – Two Ways

Cement Energy Storage – Two Ways

Cement, the binding agent in concrete, is the world’s most widely utilized construction material and may soon be used as cement energy storage. However, emerging research reveals its overlooked potential to serve as a cement energy storage medium in two completely different ways: solid thermal batteries and supercapacitors (when combined with carbon).

Cement Blocks as Thermal Batteries

According to an article in the Journal of Composites Science, scientists have developed a method to produce cement-based blocks that effectively function as thermal batteries. Their technique infuses cement blocks with the ability to soak up renewable electricity when manufactured and then discharge it later on demand as usable heat.

The researchers use chemical alterations during the concrete mixing process to integrate phase change materials into the cement binder matrix. These phase-change materials have the ability to store and release thermal energy.

The resulting cement energy storage blocks contain phase change materials that can absorb electricity when it is most abundant and inexpensive from the grid or renewable sources. The charged blocks can then act as solid thermal batteries, releasing their stored energy as heat when needed for space and water heating systems.

In initial tests, the team achieved energy densities comparable to lithium-ion batteries in their cement energy storage-based blocks. This stored energy is emitted as gentle heat when water is added, with adjustable discharge rates. The blocks can offer long-duration energy storage across daily cycles or entire seasons.

By incorporating waste materials like plastic ash during production, the researchers achieved lower costs than conventional concrete blocks or batteries. Additional waste heat captured during block fabrication can provide self-generated power.

The creators say that scale adoption of such cement energy storage thermal batteries could provide renewable energy storage for buildings while lowering grid demand peaks. The cement blocks offer an alternative to mining metals like lithium, cobalt, and nickel, which are finite and environmentally destructive to extract.

This novel approach redirects one of cement’s existing useful properties – its high thermal mass – towards storing renewable energy rather than fossil fuels traditionally used for heat in cement kilns. It points to one-way cement could aid sustainable energy transitions through material innovation.

 

Conductive Cement-Carbon Composites

Researchers at MIT have also demonstrated cement energy storage’s potential as an energy storage medium by transforming it into a highly efficient supercapacitor. Their method infuses cement with carbon-based additives to create cement-derived composites with enhanced conductive properties.

The MIT team found that the resulting material attained supercapacitor-like behaviors by mixing cement with inexpensive carbon black additives. This was due to carbon black creating a conductive surface area network throughout the composite.

With just 3% carbon black content by volume, cement’s conductivity spiked to levels comparable to powerful supercapacitors. The team states that a cement block around 45 cubic meters in size could potentially store up to 10 kilowatt-hours of energy – equal to an average home’s daily usage.

While still experimental, the researchers say these carbon-infused cement energy storage composites could enable integrated energy storage in concrete structures. Walls, foundations, or roadways made with such cement mixtures might capture solar, wind, or waste energy onsite for later usage.

The carbon provides the charge-storing capacity, while ubiquitous cement allows for scalable, inexpensive production since these composites do not rely on scarce materials like lithium or cobalt. Combined, they offer unique advantages as sustainable energy storage solutions.

 

Conclusion

Together, these two emerging techniques demonstrate that one of the planet’s most abundant building materials – cement – can potentially provide flexible, large-scale energy storage as demands grow.

While still in the early stages, both research trajectories showcase cement’s latent abilities to store energy through novel manufacturing processes and composite ingredients. With further advancement, cement energy storaget-based batteries and supercapacitors may offer new tools for enabling greater renewable energy integration across infrastructure. The present global ubiquity of concrete construction means cement-derived energy storage could be rapidly deployable once perfected. Unlocking the hidden attributes of cement through materials science and engineering may yield key innovations to support grids in an electrified, renewable future.

 

 


 

 

Source   Happy Eco News

Generating small amounts of electricity by squeezing luffa sponges

Generating small amounts of electricity by squeezing luffa sponges

A team of mechanical engineers at Beihang University, Peking University and the University of Houston has found that it is possible to capture small amounts of electricity by repeatedly squeezing treated luffa sponges. In their study, reported in Proceedings of the National Academy of Sciences, the group treated sample luffa sponges and measured the electricity they generated when repeatedly squeezed.

Prior research has shown that applying force or stress to certain materials can result in an accumulation of a piezoelectric charge. Prior research has also shown that repeatedly applying and releasing the force or stress can result in the production of a flow of piezoelectricity.

Over the past several years, engineers have investigated the possibility of generating small amounts of piezoelectricity by taking advantage of footsteps, for example, or the movement of clothes as a person walks. Electricity generated and collected in such ways is seen as a possible way to charge personal devices. In this new effort, the research team looked into use of a new kind of material to generate piezoelectricity—luffa sponges.

Luffa sponges are porous shells that are left behind when the fruit of a luffa plant is left to dry. They have been prepared and sold as a commercial product, mainly as a tool for removing dead skin from the body while in the shower. In this new effort, the researchers looked at luffa as a possible tool for generating small amounts of electricity.

They first treated them with chemicals to remove hemicellulose and lignin, leaving behind a cellulose crystal shell. Then, they connected the results to an electrical circuit and began squeezing them over and over by hand. The research team found they were able to generate up to 8 nanoamps of electricity.

They acknowledge that the amount of electricity generated is so small that it likely would not be of much use, but they also suggest that artificially created luffa sponges could be created that would be more efficient. They could also be made a lot bigger to generate useable amounts of electricity.

 

 


 

 

Source  Tech Xplore

The Air-gen Device that Converts Humidity into Energy

The Air-gen Device that Converts Humidity into Energy

What if it were possible to create energy out of air? A purely sustainable and renewable source of energy that wouldn’t require towers or panels. Researchers from the University of Massachusetts Amherst have developed just that. It turns out that air humidity is a vast, sustainable reservoir of energy that is continuously available. The researchers claim that just about any surface can be turned into a generator by replicating the electrical properties of storm clouds. A storm cloud is a mass of water droplets, all of which contain a charge. When the conditions are right, the cloud can produce a lightning bolt. The researchers have used similar properties to build a small-scale cloud that can produce electricity predictably and continuously.

So how does it work? Their air generator (Air-gen) relies on microscopic holes smaller than 100 nanometres (even more minuscule than a strand of a human hair). The small diameter of these holes is called a “mean free path”, which is the distance a single molecule can travel before it collides with another molecule of the same substance.

Water molecules float all around the air, and their mean free path is around 100 nanometres. As the humid air passes through Air-gen’s minuscule holes, the water molecules will directly contact an upper and lower chamber in the film. Because each pore is so small, the water molecules would easily bump into the pore’s edge as they pass through the thin layer. This interaction creates a charge imbalance and results in electricity.

The researchers claim that their product could offer kilowatts of power for general usage as long as there is any humidity in the air. Their Air-gen device could be more space efficient and blend into the environment compared to other renewable energy options such as solar and wind power. Moreover, humidity exists at all hours of the day and night, rain or shine, to provide non-stop energy.

The researchers also claim that harvesting the air and water droplets could be designed from all kinds of materials, which offers many opportunities for cost-effective and environment-adaptable designs. The Air-gen device is so small that thousands of them could be stacked on top of each other, increasing the amount of energy it gives off without increasing the environmental footprint of the device.

This device stems from the researcher’s previous inventions of generating an electric current using moisture in the air using a microbe called Geobacter. Their device produced a sustained voltage of about 0.5 volts for about 20 hours and could light up small LED bulbs. However, they couldn’t get the microbe to create enough nanowires (the small holes that generate the electric charge) to scale up the technology further.

Their new Air-gen device has never been discovered before, and it opens up many possibilities for effectively using renewable resources to create energy. It’s incredible to think we could harvest energy from the air around us. This discovery and invention could be scaled up. They could make renewable energy more accessible to people around the world. They could reduce the negative environmental impact we see with some existing forms of renewable energy (solar panels or wind turbines).

 

 


 

 

Source Happy Eco News 

Schneider Electric moves forward on sustainability plan

Schneider Electric moves forward on sustainability plan

Schneider Electric – a European multinational based in France that produces specialised digital automation and energy management solutions – has been making headway in the march of electricity use. All and all, it is part of a grand plan of sustainability for the company.

In a sustainability impact report covering the years 2021-2025, the company has laid out a number of targets which it hopes to achieve. Among these are the following: 80% green revenue; saving 800 million tonnes of CO2 emissions for its customers; having 1,000 top suppliers to reduce emissions by 50%; getting 50% of green material into its products; and having all of its packaging free from single-use plastic.

 

A new approach to PE

Lately, Schneider has been doubling down on its efforts.

Last month it introduced ‘Innovation at the Edge,’ in which it seeks to partner with, invest in and incubate start ups via its venture capital fund, SE Ventures. Pivoting on its strengths, the fund aims to address the problems of the future. As it said in a statement: “We know to solve the climate crisis the world must become more sustainable, digital and electric. We also know the technologies exist today, but we have to move faster. Therefore, we pursue combinations of climate technology that address this challenge, and initiatives and business models to speed their deployment.”

Another measure Schneider has adopted to spur sustainable transformation is its Industrial Digital Transformation Consulting and Deployment Service, itself launched just last week. The remit of this “specialised global service” is, according to a press release, “to help industrial enterprises achieve future-ready, innovative, sustainable, and effective end-to-end digital transformation.”

Among the areas in which it hopes to guide its clients are in discovery, diagnosis, strategy, design, implementation, and ongoing customer success.

According to Marc Fromager, SVP Industrial Automation Services, Schneider Electric: “Successful industrial digital transformation requires a global vision that is agile enough to support local neds. Successful programmes encompass efficiency, sustainability, and employee empowerment, underpinned by robust cybersecurity.

“What elevates Schneider Electric isn’t our unmatched combination of digital transformation experience across a myriad of industries, supported by our world-leading energy management and automation technology and software – all delivered by local experts with the full backing of our global teams.”

 

 


 

 

Source Sustainability

Made in America: A lithium supply chain for EV batteries

Made in America: A lithium supply chain for EV batteries

With the U.S. supplying 1 percent of the world’s lithium, there’s nowhere to go but up.

About 30 miles east of Reno, Nevada — past Tesla’s sprawling Gigafactory battery plant and the arid dusty grasslands of Northern Nevada — a startup is developing a large factory that could help unlock lithium, a key ingredient in electric vehicle batteries, from the earth.

The six-year-old company, Lilac Solutions, makes small white beads that can extract lithium from salty water deposits called brines, found around the world in places such as Argentina and Chile — and also Nevada and California. So-called ion-exchange beads are already used for various industrial applications such as cleaning water, but these are the first used for extracting lithium.

The U.S. is a bit player in the global lithium mining and processing game, dwarfed by other countries. The U.S. produces about 1 percent of the world’s lithium, while Australia, Chile, Argentina and China collectively produce over 90 percent. For decades, the only lithium that trickled out of the U.S. came from a small mine in Nevada run by chemical company Albemarle.

But as global sales of EVs have begun to rise dramatically — expected to grow from just under 10 percent of new passenger vehicle sales in 2021 to 23 percent by 2025 — lithium demand has gone through the roof. The global demand for lithium is expected to rise from 500,000 metric tons of lithium carbonate equivalent in 2021 to 3 to 4 million metric tons by 2030. The problem is clear: Relying on other countries for essentially all the critical minerals that make up EV batteries is not just a liability, it’s a missed opportunity.

That’s why a collective effort is underway to shift the tectonic plates under the world’s lithium supply chain to include the U.S. Mining giants, automakers, tech startups, lithium speculators, state and local governments and the Biden administration have all been trying to kickstart America’s domestic lithium initiatives. New lithium projects, from mining to processing, are proposed across states including California, Nevada, North Carolina, Tennessee and Maine.

American automakers including General Motors, Tesla and Ford will need hundreds of thousands of tons of lithium to meet growing demand for lithium-ion-powered electric vehicles.
Earlier this month, President Joe Biden unveiled a plan to dole out close to $3 billion in grants to 20 companies that are manufacturing, processing or mining key minerals, including lithium, for electric vehicle batteries. Lilac Solutions was chosen to negotiate a $50 million grant to help build its planned factory in Fernley, Nevada, near Reno.

The Biden administration’s Department of Energy funding follows the newly established law, the Inflation Reduction Act, which ties some tax credits for electric vehicles to battery minerals that are extracted, processed or recycled in the U.S. This spring the administration also used the Defense Production Act to increase the American production of battery minerals.

While China, Australia, Chile, Argentina and others are likely to dominate the lithium supply chain for the foreseeable future, domestic U.S. sources for mining, processing and recycling lithium will be important to help bolster the emerging American EV industry.

 

Mine the brine

Lilac, founded in 2016 and based in Oakland, California, has been quietly attracting interest from mining partners such as Australia’s Lake Resources as well as big-name investors. Last year, the company closed on a $150 million round of series B funding from Bill Gates’ Breakthrough Energy Ventures and Chris Sacca’s Lowercarbon Capital. Lilac’s investors also include T. Rowe Price, MIT’s The Engine and Tesla backer Valor Equity Partners.

The startup has drawn a who’s who of funders because of its potential ability to unlock lithium from the world’s brines. Much of the current global lithium supply is dug out of hard rock in mines like in Australia. But there are untapped resources in salty water deposits, where the lithium exists in low concentration and the mixture has high impurities. Lilac says its beads can suck out the lithium from the solution and leave the rest of the brine mixture intact to be returned back to the environment.

The massive brine lithium mines of South America — found in places such as Chile’s Atacama desert — use huge amounts of water and land and take 12 to 18 months to produce lithium through solar evaporation. A technology like Lilac’s could offer a more efficient, more sustainable method across a much smaller footprint.

Part of Lilac’s Series B funding is being spent on getting the Fernley factory into production, Lilac CEO Dave Snydacker told GreenBiz last month. The $50 million from the DOE will help accelerate production, and the agency said Lilac’s funding will create 150 new jobs.

Snydacker said the plant will come online in phases over the next two years and eventually will be able to make enough beads to support the extraction of 200,000 tons per year of lithium. That’s the equivalent of close to half of the amount of lithium produced globally last year. The funding doesn’t just add to Lilac’s war chest, it also adds validation and the spotlight of the White House.

At the event where Biden unveiled the EV battery minerals grants, 10 executives of companies, many of them startups, appeared behind Biden on a screen and four made remarks about how the funding would be used. Three of the four speakers were leaders of lithium production and processing companies: Albemarle; American Battery Technology Company; and ICL-IP America.

Albemarle plans to use a $150 million grant from the DOE to build a lithium concentrator plant at a mine in Kings Mountain, North Carolina. A concentrator increases the amount of lithium per volume and is one step in the process to get it ready to put into batteries. When it’s up and running, the Kings Mountain lithium supply chain would be able to produce and process enough lithium for 750,000 electric cars per year.

It makes sense for U.S. companies to try to tap into domestic lithium when it’s done sustainably and in a sensitive way for local communities.
Albemarle is also doubling the size of its lithium mine, Silver Peak, in Nevada, about 200 miles southeast from Fernley and Tesla’s Gigafactory. In Nevada alone, there are 17,000 prospecting claims for lithium, the Guardian recently reported.

 

Long road for U.S. lithium

Becoming a player in the global lithium supply chain won’t be easy for U.S. stakeholders. Companies looking to build new mines or reopen older ones face lengthy environmental review processes and are often challenged by local Indigenous communities. And rightly so, mining companies have long histories of polluting lands and neglecting the needs of groups that might use the lands as sacred sites, communal purposes or for hunting and fishing.

Most of the domestic critical mineral deposits needed for EV batteries — lithium, cobalt, nickel, copper — are near Native American reservations. Lithium Americas Corp. has faced resistance from both Native American tribes and environmentalists over its proposed lithium mine, Thacker Pass, in Nevada. By some estimates, Thacker Pass could contain the largest hard rock lithium deposit in the U.S.

American automakers including General Motors, Tesla and Ford will need hundreds of thousands of tons of lithium to meet growing demand for lithium-ion-powered electric vehicles. The industry won’t be able to source all of that domestically and fast enough, and South American lithium mines are likely to play a key role in the growing American EV boom.

But it makes sense for U.S. companies to try to tap into domestic lithium when it’s done sustainably and in a sensitive way for local communities. Investors are eager to put money into U.S. lithium initiatives — it can be cheaper to finance U.S. projects versus international ones — and there are shipping efficiencies if mining, processing and battery production projects can all be on the same continent.

With America supplying just 1 percent of the world’s lithium, there’s nowhere to go but up when it comes to American-made and -processed lithium. And for Lilac Solutions, if the technology works economically at a commercial scale as its supporters hope it does, its Nevada factory could be a key way for an American-made tech to be the one to help unlock the world’s lithium.

 

 


 

 

Source GreenBiz

Crab and lobster shells could be used to make renewable batteries

Crab and lobster shells could be used to make renewable batteries

Scientists want to use a chemical found in crab and lobster shells to make batteries more sustainable, according to research.

“We think both biodegradability of material, or environmental impact, and the performance of the batteries are important for a product, which has the potential to be commercialised,” said Liangbing Hu, the director of the University of Maryland’s Center for Materials Innovation and lead author of the paper, published in the journal Matter.

As the world transitions towards deploying green energy solutions and electric vehicles, the batteries being used for such technology also need to be eco-friendly.

But the chemicals used in conventional batteries such as lithium-ion can take hundreds or thousands of years to break down. These chemicals are also often corrosive and flammable. In some cases consumer-gadget batteries have caught fire on aircrafts, or caused fires in waste and recycling sites.

The researchers in Maryland have developed batteries that use a product derived from crustacean shells to store energy.

 

Crustaceans such as crabs, shrimps and lobsters have exoskeletons made of cells that contain chitin, a polysaccharide that makes their shells hard and resistant. Photograph: Eric Risberg/AP

 

Crustaceans such as crabs, shrimps and lobsters have exoskeletons made of cells that contain chitin, a kind of polysaccharide that makes their shells hard and resistant. This valuable material is abundant in nature and can also be found in fungi and insects, but is usually thrown away as food waste from restaurants and a byproduct of the food industry. Scientists have long been researching its various applications – in biomedical engineering, for example, for wound dressing as well as anti-inflammatory treatments – and now, electrical engineering.

Through chemical processing and adding acetic acid aqueous solution, chitin can ultimately be synthesized into a firm gel membrane and used as an electrolyte for a battery. An electrolyte is the liquid, paste, or gel inside a battery that helps ions – charged molecules – travel between one end and the other of a battery, allowing it to store energy.

By combining this chitosan electrolyte with zinc, a naturally occurring metal increasingly used to make batteries that are cheap and safe, Hu’s team was able to create a renewable battery.

The battery is 99.7% energy efficient even after 1,000 battery cycles, which is about 400 hours. This means they can be quickly charged and discharged without significantly affecting their performance. “It is not an easy thing for batteries to operate at high current density. The displayed performance suggests the merit of chitosan-based material in this work,” said Hu.

 

The batteries are not flammable and the two-thirds of the battery made of chitosan can break down in soil thanks to microbial degradation in just five months, leaving behind recyclable zinc. Antonio J Fernández Romero, a professor of material sciences for energy production at the University of Cartagena in Spain, who was not involved in the study, said these were “outstanding properties”.

He said: “The design of new batteries that are respectful of the environment, cheap and producing high discharge capacity, is one of the more important items that must be developed in the coming years.” He added that biodegradability was key, and at this level the system seemed to work very well but it would have to be tested on a larger scale and under commercial use conditions.

The design may pave the way for developing high-performance and sustainable batteries for green energy storage, according to Hu and the study authors.

“When you develop new materials for battery technologies there tends to be a significant gap between promising lab results and a demonstrable and scalable technology,” said Graham Newton, a professor of materials chemistry at the University of Nottingham, who was not involved in the study. He is an expert in sustainable batteries and researches how they can be improved.

So far, according to Newton, the chitosan-zinc battery results are promising. “There are some examples of batteries like this that have been commercialized and are being trialed as stationary energy storage systems,” said Newton. “There are still quite a few challenges to be met in the development of zinc ion batteries, but fundamental studies such as this are hugely important.”

 


 

Source  The Guardian News

400,000+ Solar Co-Owners In Giant Community Solar Park Initiative In Denmark & Poland

400,000+ Solar Co-Owners In Giant Community Solar Park Initiative In Denmark & Poland

A giant new community solar park initiative is going to make more than 400,000 Danes co-owners in solar parks located in Denmark (around ¾ of them) and Poland (the other ¼ or so).

This massive initiative will be the largest solar investment in Denmark’s history, totaling around DKK 4 billion ($651.5 million). It is a partnership between Danish pension fund Industriens Pension and Better Energy.

Furthermore, the initiative involves absolutely no support from the government of Denmark.

The announcement does not indicate how many solar parks will be deployed across Denmark and Poland as part of this initiative, but the total capacity is expected to be around 1 gigawatt (GW), which will actually make it one of the largest — if not the largest — such projects across the world.

 

 

As of now, 5 of the solar power parks are in operation (power capacity is not indicated), but “the majority of the parks are expected to be in operation in the course of 2021 and 2022.”

It’s a 50–50 partnership between Industriens Pension and Better Energy, and Better Energy is the one developing, building, and operating the solar parks.

“We’re extremely pleased with the investment, which we expect will secure solid, long-term returns for our members, while at the same time contributing significantly to accelerating the scale and pace of the green transition. This is the first time that solar energy has been rolled out at this scale in Denmark, and the investment marks a real breakthrough for solar energy in Denmark,” said Laila Mortensen, CEO of Industriens Pension.

“For the first time, Danish pension savings will help accelerate a massive scaling up of subsidy-free green energy production in Denmark. In that sense, our partnership with Industriens Pension marks the beginning of a new era. The next chapter in the green transition will entail accelerating the deployment of renewable energy capacity without state support, together with ensuring critical widespread community ownership and backing. And this is precisely what we are doing with this agreement,” said Rasmus Lildholdt Kjær, CEO of Better Energy.

“This agreement establishes a robust partnership model for how to rapidly scale up the green transition. And this is imperative if Denmark is to have a reasonable chance of achieving its climate targets,” said Mark Augustenborg Ødum, EVP Partnerships in Better Energy.

This is one of the most exciting and empowering solar projects I’ve seen in my 10+ years covering the solar industry. The combination of the fundamental co-ownership of the projects, the massive scale, the fact that it’s all subsidy-free, and the promise for more like this elsewhere make for just one of the most inspiring solar power stories I’ve seen. Furthermore, all of this is happening very far north. This is seriously grey-weather territory. But solar power is competitive nonetheless.

As indicated recently, the International Energy Agency (IEA), which has a history of close ties to the fossil fuel industry, has determined that solar power now offers the “cheapest electricity in history.” That was more recently echoed by Lazard as well.

The record-low solar power prices come after a constant drop in solar panel prices across the globe that follow the now totally common reality that as you ramp up production of a technology, costs drop. As I wrote in September, solar PV panels were 12× more expensive in 2010, and 459× more expensive in 1977. The results of this technological learning curve mean that the future of electricity will increasingly be solarized, while the Denmark and Poland projects above show that we can expect a growing flood of large and unexpected solar PV growth in even the greyest of places.

Interestingly, this solar power initiative also arrives as Denmark has decided to end oil & gas exploration in the North Sea.

This also comes not long after Google’s announcement that it, too, is going to be getting a large amount of subsidy-free solar power in Denmark. The 100-megawatt solar power plans seemed like a large announcement, but that just ends up being one-tenth of the Industriens Pension plans. That said, Google has the same partner as Industriens Pension — Better Energy. The solar power developer will build three new solar power parks in Denmark for Google.

 

 

Clearly, Better Energy has become quite adept at developing low-cost solar power plants, and convincing major companies and pension funds to choose the firm to build and operate its power plants. We’ll have to keep our eye on BE.

 


 

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Source Clean Technica