Xcel, Tri-State to team on building new transmission lines

By Rocky Mountain News


NFPA 70e Training - Arc Flash

Our customized live online or in‑person group training can be delivered to your staff at your location.

  • Live Online
  • 6 hours Instructor-led
  • Group Training Available
Regular Price:
$199
Coupon Price:
$149
Reserve Your Seat Today
Colorado's two biggest power suppliers, Xcel Energy and Tri-State Generation and Transmission, have teamed to spend hundreds of millions of dollars to build transmission lines in the state.

The companies signed a memorandum of understanding to consider transmission projects that would improve reliability of service and deliver electricity from future power plants.

Transmission lines are high-voltage lines that carry electricity from power plants, typically located outside towns or cities, to substations before delivering it to homes or businesses.

Under the agreement, Xcel and Tri-State will consider three projects building lines from the San Luis Valley to farmland near Lamar to the Front Range.

Those lines could support future solar plants in the San Luis Valley, or wind farms near Lamar, or even Xcel's coal-fired power plant near Pueblo scheduled to come online in late 2009 or early 2010.

All told, those lines and others could support 3,000 megawatts of new power resources in the state - enough to serve the electric needs of 1 million to 3 million residential customers.

"We're collaborating to develop long-term solutions to the state's transmission challenges," said Joel Bladow, Tri-State's senior vice president of transmission.

"Together we can cost-effectively develop a transmission system that is more reliable, serves our growing communities and opens more of rural Colorado for investment in renewable energy development."

Tri-State and Xcel will work together to determine the feasibility of jointly constructing the three projects, including the cost, timing, specific paths and locations. One mile of transmission typically costs from $650,000 to $1 million, depending on capacity and location.

Transmission has lagged the rapid construction of wind farms because of cost, location and regulatory and technical issues.

And that, in turn, has discouraged wind farms in many areas, especially in northeast Colorado, one of the windiest areas in the state.

Lawmakers in 2006 passed a bill to help alleviate the problem by offering incentives for the construction of transmission lines.

"Without additional transmission resources, it would be difficult to support the future renewable energy portfolio development necessary to meet the needs of Colorado's New Energy Economy," said Kent Larson, Xcel Energy vice president for transmission.

Related News

Blood Nickel and Canada's Role in Global Mining Sustainability

Blood Nickel spotlights ethical sourcing in the EV supply chain, linking nickel mining to human rights, environmental impact, ESG standards, and Canadian leadership in sustainable extraction, transparency, and community engagement across global battery materials markets.

 

Key Points

Blood Nickel is nickel mined under unethical or harmful conditions, raising ESG, human rights, and environmental risks.

✅ Links EV battery supply chains to social and environmental harm

✅ Calls for transparency, traceability, and ethical sourcing standards

✅ Highlights Canada's role in sustainable mining and community benefits

 

The rise of electric vehicles (EVs) has sparked a surge in demand for essential battery components, particularly nickel, and related cobalt market pressures essential for their batteries. This demand has ignited concerns about the environmental and social impacts of nickel mining, particularly in regions where standards may not meet global sustainability benchmarks. This article explores the concept of "blood nickel," its implications for the environment and communities, and Canada's potential role in promoting sustainable mining practices.

The Global Nickel Boom

As the automotive industry shifts towards electric vehicles, nickel has emerged as a critical component for lithium-ion batteries due to its ability to store energy efficiently. This surge in demand has led to a global scramble for nickel, with major producers ramping up extraction efforts to meet market needs amid EV shortages and wait times that underscore supply constraints. However, this rapid expansion has raised alarms about the environmental consequences of nickel mining, including deforestation, water pollution, and carbon emissions from energy-intensive extraction processes.

Social Impacts: The Issue of "Blood Nickel"

Beyond environmental concerns, the term "blood nickel" has emerged to describe nickel mined under conditions that exploit workers, disregard human rights, or fail to uphold ethical labor standards. In some regions, nickel mining has been linked to issues such as child labor, unsafe working conditions, and displacement of indigenous communities. This has prompted calls for greater transparency and accountability in global supply chains, with initiatives like U.S.-ally efforts to secure EV metals aiming to align sourcing standards, to ensure that the benefits of EV production do not come at the expense of vulnerable populations.

Canada's Position and Potential

Canada, home to significant nickel deposits, stands at a pivotal juncture in the global EV revolution, supported by EV assembly deals in Canada that strengthen domestic manufacturing. With its robust regulatory framework, commitment to environmental stewardship, and advanced mining technologies, Canada has the potential to lead by example in sustainable nickel mining practices. Canadian companies are already exploring innovations such as cleaner extraction methods, renewable energy integration, and community engagement initiatives to minimize the environmental footprint and enhance social benefits of nickel mining.

Challenges and Opportunities

Despite Canada's potential, the mining industry faces challenges in balancing economic growth with environmental and social responsibility and building integrated supply chains, including downstream investments like a battery plant in Niagara that can connect materials to markets. Achieving sustainable mining practices requires collaboration among governments, industry stakeholders, and local communities to establish clear guidelines, monitor compliance, and invest in responsible resource development. This approach not only mitigates environmental impacts but also fosters long-term economic stability and social well-being in mining regions.

Pathways to Sustainability

Moving forward, Canada can play a pivotal role in shaping the global nickel supply chain by promoting transparency, ethical sourcing, and environmental stewardship. This includes advocating for international standards that prioritize sustainable mining practices, supporting research and development of cleaner technologies, and leveraging adjacent resources such as Alberta lithium potential to diversify battery supply chains, while fostering partnerships with global stakeholders to ensure a fair and equitable transition to a low-carbon economy.

Conclusion

The rapid growth of electric vehicles has propelled nickel into the spotlight, highlighting both its strategic importance and the challenges associated with its extraction. As global demand for "green" metals intensifies, addressing the concept of "blood nickel" becomes increasingly urgent, even as trade measures like tariffs on Chinese EVs continue to reshape market incentives. Canada, with its rich nickel reserves and commitment to sustainability, has an opportunity to lead the charge towards ethical and responsible mining practices. By leveraging its strengths in innovation, regulation, and community engagement, Canada can help forge a path towards a more sustainable future where electric vehicles drive progress without compromising environmental integrity or social justice.

 

Related News

View more

Overturning statewide vote, Maine court energizes Hydro-Quebec's bid to export power

Maine Hydropower Transmission Line revived by high court after referendum challenge, advancing NECEC, Hydro-Quebec supply, Central Maine Power partnership, clean energy integration, grid reliability, and lower rates across New England pending land-lease ruling.

 

Key Points

A court-revived NECEC line delivering 1,200 MW of Hydro-Quebec hydropower via CMP to strengthen the New England grid.

✅ Maine high court deems retroactive referendum unconstitutional

✅ Pending state land lease case may affect final route

✅ Project could lower rates and cut emissions in New England

 

Maine's highest court on Tuesday breathed new life into a $1-billion US transmission line that aims to serve as conduit for Canadian hydropower, after construction starts drew scrutiny, ruling that a statewide vote rebuking the project was unconstitutional.

The Supreme Judicial Court ruled that the retroactive nature of the referendum last year violated the project developer's constitutional rights, sending it back to a lower court for further proceedings.

The court did not rule in a separate case that focuses on a lease for a 1.6-kilometre portion of the proposed power line that crosses state land.

Central Maine Power's parent company and Hydro-Québec teamed up on the project that would supply up to 1,200 megawatts of Canadian hydropower, amid the ongoing Maine-Quebec corridor debate in the region. That's enough electricity for one million homes.

Most of the proposed 233-kilometre power transmission line would be built along existing corridors, but a new 85-kilometre section was needed to reach the Canadian border, echoing debates around the Northern Pass clash in New Hampshire.

Workers were already clearing trees and setting poles when the governor asked for work to be suspended after the referendum in November 2021, mirroring New Hampshire's earlier rejection of a Quebec-Massachusetts proposal that rerouted regional plans. The Maine Department of Environmental Protection later suspended its permit, but that could be reversed depending on the outcome of legal proceedings.

The high court was asked to weigh in on two separate lawsuits. Developers sought to declare the referendum unconstitutional while another lawsuit focused on a lease allowing transmission lines to cross a short segment of state-owned land.

Supporters say bold projects such as this one, funded by ratepayers in Massachusetts, are necessary to battle climate change and introduce additional electricity into a region that's heavily reliant on natural gas, which can cause spikes in energy costs, as seen with Nova Scotia rate increases recently across the Atlantic region.

Critics say the project's environmental benefits are overstated — and that it would harm the woodlands in western Maine.

It was the second time the Supreme Judicial Court was asked to weigh in on a referendum aimed at killing the project. The first referendum proposal never made it onto the ballot after the court raised constitutional concerns.

Although the project is funded by Massachusetts ratepayers, the introduction of so much electricity to the grid would serve to stabilize or reduce electricity rates for all consumers, proponents contend, even as Manitoba Hydro rate hikes face opposition elsewhere.

The referendum on the project was the costliest in Maine history, topping $90 million US and underscoring deep divisions.

The high-stakes campaign put environmental and conservation groups at odds, and pitted utilities backing the project, amid the Hydro One-Avista backlash, against operators of fossil fuel-powered plants that stand to lose money.

 

Related News

View more

London Gateway Unveils World’s First All-Electric Berth

London Gateway All-Electric Berth enables shore power and cold ironing for container ships, cutting emissions, improving efficiency, and supporting green logistics, IMO targets, and UK net-zero goals through grid connection and port electrification.

 

Key Points

It is a shore power berth supplying electricity to ships, cutting emissions and costs while boosting port efficiency.

✅ Grid connection enables cold ironing for container ships

✅ Supports IMO decarbonization and UK net-zero goals

✅ Stabilizes energy costs versus marine fuels

 

London Gateway, one of the UK’s premier deep-water ports, has unveiled the world’s first all-electric berth, marking a significant milestone in sustainable port operations. This innovative development aims to enhance the port's capacity while reducing its environmental impact. The all-electric berth, which powers vessels using electricity, similar to emerging offshore vessel charging solutions, instead of traditional fuel sources, is expected to greatly improve operational efficiency and cut emissions from ships docking at the port.

The launch of this electric berth is part of London Gateway’s broader strategy to become a leader in green logistics, with parallels in electric truck deployments at California ports that support port decarbonization, aligning with the UK’s ambitious climate goals. By transitioning to electric power, the port reduces reliance on fossil fuels and significantly lowers carbon emissions, contributing to a cleaner environment and supporting the maritime industry’s transition towards sustainability.

The berth will provide cleaner power to container ships, enabling them to connect to the grid while docked, similar to electric ships on the B.C. coast, rather than running their engines, which traditionally contribute to pollution. This innovation supports the UK's broader push for decarbonizing its transportation and logistics sector, especially as the global shipping industry faces increasing pressure to reduce its carbon footprint.

The new infrastructure is expected to increase London Gateway’s operational capacity, allowing for a higher volume of traffic while simultaneously addressing the environmental challenges posed by growing port activities. By integrating advanced technologies like the all-electric berth, and advances such as battery-electric high-speed ferries, the port can handle more shipments without expanding its reliance on traditional fuel-based power sources. This could lead to increased cargo throughput, as shipping lines are incentivized to use a greener, more efficient port for their operations.

The project aligns with broader global trends, including electric flying ferries in Berlin, as ports and shipping companies seek to meet international standards set by the International Maritime Organization (IMO) and other regulatory bodies. The IMO has set aggressive targets for reducing greenhouse gas emissions from shipping, and the UK has pledged to be net-zero by 2050, with the shipping sector playing a crucial role in that transition.

In addition to its environmental benefits, the electric berth also helps reduce the operational costs for shipping lines, as seen with electric ferries scaling in B.C. programs across the sector. Traditional fuel costs can be volatile, whereas electric power offers a more stable and predictable expense. This cost stability could make London Gateway an even more attractive port for international shipping companies, further boosting its competitive position in the global market.

Furthermore, the project is expected to have broader economic benefits, generating jobs and fostering innovation, such as hydrogen crane projects in Vancouver, within the green technology and maritime sectors. London Gateway has already made significant strides in sustainable practices, including a focus on automated systems and energy-efficient logistics solutions. The introduction of the all-electric berth is the latest in a series of initiatives aimed at strengthening the port’s sustainability credentials.

This groundbreaking development sets a precedent for other global ports to adopt similar sustainable technologies. As more ports embrace electrification and other green solutions, the shipping industry could experience a dramatic reduction in its environmental footprint. This shift could have a cascading effect on the wider logistics and supply chain industries, leading to cleaner and more efficient global trade.

London Gateway’s all-electric berth represents a forward-thinking approach to the challenges of climate change and the need for sustainability in the maritime sector. With its ability to reduce emissions, improve port capacity, and enhance operational efficiency, this pioneering project is poised to reshape the future of global shipping. As more ports around the world follow suit, the potential for widespread environmental impact in the shipping industry is significant, providing hope for a greener future in international trade.

 

Related News

View more

We Need a Total Fossil Fuel Lockdown for a Climate Revolution

Renewables 2020 Global Status Report highlights renewable energy gaps beyond power, urging decarbonization in heating, cooling, and transport, greener COVID-19 recovery, market reforms, and rapid energy transition to cut CO2 emissions and fossil fuel dependence.

 

Key Points

REN21's annual report on renewable energy progress and policy gaps across power, heating, cooling, and transport.

✅ Calls for decarbonizing heating, cooling, and transport.

✅ Warns COVID-19 recovery must avoid fossil fuel lock-in.

✅ Urges market reforms to boost energy efficiency and renewables.

 

Growth in renewable power has been impressive over the past five years, with over 30% of global electricity now coming from renewables worldwide. But too little is happening in heating, cooling and transport. Overall, global hunger for energy keeps increasing and eats up progress, according to REN21's Renewables 2020 Global Status Report (GSR), released today. The journey towards climate disaster continues, unless we make an immediate switch to efficient and renewable energy in all sectors in the wake of the COVID-19 pandemic.

"Year after year, we report success after success in the renewable power sector. Indeed, renewable power has made fantastic progress. It beats all other fuels in growth and competitiveness. Many national and global organisations already cry victory. But our report sends a clear warning: The progress in the power sector is only a small part of the picture. And it is eaten up as the world's energy hunger continues to increase. If we do not change the entire energy system, we are deluding ourselves," says Rana Adib, REN21's Executive Director.

The report shows that in the heating, cooling and transport sectors, the barriers are still nearly the same as 10 years ago. "We must also stop heating our homes and driving our cars with fossil fuels," Adib claims.

There is no real disruption in the COVID-19 pandemic

In the wake of the extraordinary economic decline due to COVID-19, the IEA predicts energy-related CO2 emissions are expected to fall by up to 8% in 2020. But 2019 emissions were the highest ever, and the relief is only temporary. Meeting the Paris targets would require an annual decrease of at least 7.6% to be maintained over the next 10 years, and UN analysis on NDC ambition underscores the need for faster action. Says Adib: "Even if the lock-downs were to continue for a decade, the change would not be sufficient. At the current pace, with the current system and current market rules, it would take the world forever to come anywhere near a no-carbon system."

"Many recovery packages lock us into a dirty fossil fuel economy"

Recovery packages offer a once-in-a-lifetime chance to make the shift to a low-carbon economy, and green energy investments could accelerate COVID-19 recovery. But according to Adib there is a great risk for this enormous chance to be lost. "Many of these packages include ideas that will instead lock us further into a dirty fossil fuel system. Some directly promote natural gas, coal or oil. Others, though claiming a green focus, build the roof and forget the foundation," she says. "Take electric cars and hydrogen, for example. These technologies are only green if powered by renewables."

Choosing an energy system that supports job creation and social justice

The report points out that "green" recovery measures, such as investment in renewables and building efficiency, are more cost-effective than traditional stimulus measures and yield more returns. It also documents that renewables deliver on job creation, energy sovereignty, accelerated energy access in developing countries, and clean, affordable and sustainable electricity for all objectives worldwide, alongside reduced emissions and air pollution.

"Renewables are now more cost-effective than ever, and recent IRENA analysis shows their potential to decarbonise the energy sector, providing an opportunity to prioritize clean economic recovery packages and bring the world closer to meeting the Paris Agreement Goals. Renewables are a key pillar of a healthy, safe and green COVID-19 recovery that leaves no one behind," said Inger Andersen, Executive Director of the UN Environment Programme (UNEP). "By putting energy transition at the core of economic recovery, countries can reap multiple benefits, from improved air quality to employment generation."

This contrasts with the true cost of fossil fuels, estimated to be USD 5.2 trillion if costs of negative impacts such as air pollution, effects of climate change, and traffic congestion are counted.

Renewable energy systems support energy sovereignty and democracy, empowering citizens and communities, instead of big fossil fuel producers and consumers. "When spending stimulus money, we have to decide: Do we want an energy system that serves some or a system that serves many?", says Adib. "But it's not only about money. We must end any kind of support to the fossil economy, particularly when it comes to heating, cooling and transport. Governments need to radically change the market conditions and rules and demonstrate the same leadership as during the COVID-19 pandemic."

The report finds:

Total final energy demand continues to be on the rise (1.4% annually from 2013 to 2018). Despite significant progress in renewable power generation, the share of renewables in total final energy demand barely increased (9.6% in 2013 to 11% in 2018). Compared to the power sector, the heating, cooling and transport sectors lag far behind (renewable energy share in power, 26%, heating and cooling, 10%, transport, 3%).

Today's progress is largely the result of policies and regulations initiated years ago and focus on the power sector. Major barriers seen in heating, cooling and transport are still almost the same a decade on. Policies are needed to create the right market conditions.

The renewable energy sector employed around 11 million people worldwide in 2018

In 2019, the private sector signed power purchase agreements (PPAs) for a record growth of over 43% from 2018 to 2019 in new renewable power capacity.

The global climate strikes have reached unprecedented levels with millions of people across 150 countries. They have pushed governments to step up climate ambitions. As of April 2020, 1490 jurisdictions - spanning 29 countries and covering 822 million citizens - had issued "climate emergency" declarations, many of which include plans and targets for more renewable-based energy systems.

While some countries are phasing out coal, examples such as Europe's green surge show how renewables can soar as emissions fall, yet others continued to invest in new coal-fired power plants. In addition, funding from private banks for fossil fuel projects has increased each year since the signing of the Paris Agreement, totaling USD 2.7 trillion over the last three years.

"It is clear, renewable power has become mainstream and that is great to see. But the progress in this one sector should not lead us to believe that renewables are a guaranteed success. Governments need to take action beyond economic recovery packages. They also need to create the rules and the environment to switch to an efficient and renewables-based energy system, and action toward 100% renewables is urgently needed worldwide. Globally. Now." concludes Arthouros Zervos, President of REN21.

 

Related News

View more

Ontario's Clean Electricity Regulations: Paving the Way for a Greener Future

Ontario Clean Electricity Regulations accelerate renewable energy adoption, drive emissions reduction, and modernize the smart grid with energy storage, efficiency targets, and reliability upgrades to support decarbonization and a stable power system for Ontario.

 

Key Points

Standards to cut emissions, grow renewables, improve efficiency, and modernize the grid with storage and smart systems.

✅ Phases down fossil generation and invests in storage.

✅ Sets utility efficiency targets to curb demand growth.

✅ Upgrades to smart grid for reliability and resiliency.

 

Ontario has taken a significant step forward in its energy transition with the introduction of new clean electricity regulations. These regulations, complementing federal Clean Electricity Regulations, aim to reduce carbon emissions, promote sustainable energy sources, and ensure a cleaner, more reliable electricity grid for future generations. This article explores the motivations behind these regulations, the strategies being implemented, and the expected impacts on Ontario’s energy landscape.

The Need for Clean Electricity

Ontario, like many regions around the world, is grappling with the effects of climate change, including more frequent and severe weather events. In response, the province has set ambitious targets to reduce greenhouse gas emissions and increase the use of renewable energy sources, reflecting trends seen in Alberta’s path to clean electricity across Canada. The electricity sector plays a central role in this transition, as it is responsible for a significant portion of the province’s carbon footprint.

For years, Ontario has been moving away from coal as a source of electricity generation, and now, with the introduction of these new regulations, the province is taking a step further in decarbonizing its grid, including its largest competitive energy procurement to date. By setting clear goals and standards for clean electricity, the province hopes to meet its environmental targets while ensuring a stable and affordable energy supply for all Ontarians.

Key Aspects of the New Regulations

The regulations focus on encouraging the use of renewable energy sources such as wind, solar, hydroelectric, and geothermal power. One of the key elements of the plan is the gradual phase-out of fossil fuel-based energy sources. This shift is expected to be accompanied by greater investments in energy storage solutions, including grid batteries, to address the intermittency issues often associated with renewable energy sources.

Ontario’s new regulations also emphasize the importance of energy efficiency in reducing overall demand. As part of this initiative, utilities and energy providers will be required to meet strict energy-saving targets and participate in new electricity auctions designed to reduce costs, ensuring that both consumers and businesses are incentivized to use energy more efficiently.

In addition, the regulations promote technological innovation in the electricity sector. By supporting the development of smart grids, energy storage technologies, and advanced power management systems, Ontario is positioning itself to become a leader in the global energy transition.

Impact on the Economy and Jobs

One of the anticipated benefits of the clean electricity regulations is their positive impact on Ontario’s economy. As the province invests in renewable energy infrastructure and clean technologies, new job opportunities are expected to arise in industries such as manufacturing, construction, and research and development. These regulations also encourage innovation in energy services, which could lead to the growth of new companies and industries, while easing pressures on industrial ratepayers through complementary measures.

Furthermore, the transition to cleaner energy is expected to reduce the long-term costs associated with climate change. By investing in sustainable energy solutions now, Ontario will help mitigate the financial burdens of environmental damage and extreme weather events in the future.

Challenges and Concerns

While the new regulations have been widely praised for their environmental benefits, they are not without their challenges. One of the primary concerns is the potential cost to consumers, and some Ontario hydro policy critique has called for revisiting legacy pricing approaches to improve affordability. While renewable energy sources have become more affordable over the years, transitioning from fossil fuels could still result in higher electricity prices in the short term. Additionally, the implementation of new technologies, such as smart grids and energy storage, will require substantial upfront investment.

Moreover, the intermittency of renewable energy generation poses a challenge to grid stability. Ontario’s electricity grid must be able to adapt to fluctuations in energy supply as more variable renewable sources come online. This challenge will require significant upgrades to the grid infrastructure and the integration of storage solutions to ensure reliable energy delivery.

The Road Ahead

Ontario’s clean electricity regulations represent an important step in the province’s commitment to combating climate change and transitioning to a sustainable, low-carbon economy. While there are challenges to overcome, the benefits of cleaner air, reduced emissions, and a more resilient energy system will be felt for generations to come. As the province continues to innovate and lead in the energy sector, Ontario is positioning itself to thrive in the green economy of the future.

 

Related News

View more

A new material made from carbon nanotubes can generate electricity by scavenging energy from its environment

Carbon Nanotube Solvent Electricity enables wire-free electrochemistry as organic solvents like acetonitrile pull electrons, powering alcohol oxidation and packed bed reactors, energy harvesting, and micro- and nanoscale robots via redox-driven current.

 

Key Points

Solvent-driven electron extraction from carbon nanotube particles generates current for electrochemistry.

✅ 0.7 V per particle via solvent-induced electron flow

✅ Packed bed reactors drive alcohol oxidation without wires

✅ Scalable for micro- and nanoscale robots; energy harvesting

 

MIT engineers have discovered a new way of generating electricity, alongside advances in renewable power at night that broaden what's possible, using tiny carbon particles that can create a current simply by interacting with liquid surrounding them.

The liquid, an organic solvent, draws electrons out of the particles, generating a current, unlike devices based on a cheap thermoelectric material that rely on heat, that could be used to drive chemical reactions or to power micro- or nanoscale robots, the researchers say.

"This mechanism is new, and this way of generating energy is completely new," says Michael Strano, the Carbon P. Dubbs Professor of Chemical Engineering at MIT. "This technology is intriguing because all you have to do is flow a solvent through a bed of these particles. This allows you to do electrochemistry, but with no wires."

In a new study describing this phenomenon, the researchers showed that they could use this electric current to drive a reaction known as alcohol oxidation—an organic chemical reaction that is important in the chemical industry.

Strano is the senior author of the paper, which appears today in Nature Communications. The lead authors of the study are MIT graduate student Albert Tianxiang Liu and former MIT researcher Yuichiro Kunai. Other authors include former graduate student Anton Cottrill, postdocs Amir Kaplan and Hyunah Kim, graduate student Ge Zhang, and recent MIT graduates Rafid Mollah and Yannick Eatmon.

Unique properties
The new discovery grew out of Strano's research on carbon nanotubes—hollow tubes made of a lattice of carbon atoms, which have unique electrical properties. In 2010, Strano demonstrated, for the first time, that carbon nanotubes can generate "thermopower waves." When a carbon nanotube is coated with layer of fuel, moving pulses of heat, or thermopower waves, travel along the tube, creating an electrical current that exemplifies turning thermal energy into electricity in nanoscale systems.

That work led Strano and his students to uncover a related feature of carbon nanotubes. They found that when part of a nanotube is coated with a Teflon-like polymer, it creates an asymmetry, distinct from conventional thermoelectric materials approaches, that makes it possible for electrons to flow from the coated to the uncoated part of the tube, generating an electrical current. Those electrons can be drawn out by submerging the particles in a solvent that is hungry for electrons.

To harness this special capability, the researchers created electricity-generating particles by grinding up carbon nanotubes and forming them into a sheet of paper-like material. One side of each sheet was coated with a Teflon-like polymer, and the researchers then cut out small particles, which can be any shape or size. For this study, they made particles that were 250 microns by 250 microns.

When these particles are submerged in an organic solvent such as acetonitrile, the solvent adheres to the uncoated surface of the particles and begins pulling electrons out of them.

"The solvent takes electrons away, and the system tries to equilibrate by moving electrons," Strano says. "There's no sophisticated battery chemistry inside. It's just a particle and you put it into solvent and it starts generating an electric field."

Particle power
The current version of the particles can generate about 0.7 volts of electricity per particle. In this study, the researchers also showed that they can form arrays of hundreds of particles in a small test tube. This "packed bed" reactor, unlike thin-film waste-heat harvesters for electronics, generates enough energy to power a chemical reaction called an alcohol oxidation, in which an alcohol is converted to an aldehyde or a ketone. Usually, this reaction is not performed using electrochemistry because it would require too much external current.

"Because the packed bed reactor is compact, it has more flexibility in terms of applications than a large electrochemical reactor," Zhang says. "The particles can be made very small, and they don't require any external wires in order to drive the electrochemical reaction."

In future work, Strano hopes to use this kind of energy generation to build polymers using only carbon dioxide as a starting material. In a related project, he has already created polymers that can regenerate themselves using carbon dioxide as a building material, in a process powered by solar energy and informed by devices that generate electricity at night as a complement. This work is inspired by carbon fixation, the set of chemical reactions that plants use to build sugars from carbon dioxide, using energy from the sun.

In the longer term, this approach could also be used to power micro- or nanoscale robots. Strano's lab has already begun building robots at that scale, which could one day be used as diagnostic or environmental sensors. The idea of being able to scavenge energy from the environment, including approaches that produce electricity 'out of thin air' in ambient conditions, to power these kinds of robots is appealing, he says.

"It means you don't have to put the energy storage on board," he says. "What we like about this mechanism is that you can take the energy, at least in part, from the environment."

 

Related News

View more

Sign Up for Electricity Forum’s Newsletter

Stay informed with our FREE Newsletter — get the latest news, breakthrough technologies, and expert insights, delivered straight to your inbox.

Electricity Today T&D Magazine Subscribe for FREE

Stay informed with the latest T&D policies and technologies.
  • Timely insights from industry experts
  • Practical solutions T&D engineers
  • Free access to every issue

Download the 2025 Electrical Training Catalog

Explore 50+ live, expert-led electrical training courses –

  • Interactive
  • Flexible
  • CEU-cerified