Copenhagen puts smart grid companies on power drive

By Reuters


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While world leaders slug it out over a new UN climate deal in Copenhagen, companies involved in smart grid technologies are attracting attention for their potential to cut emissions and costs.

Smart grids, which help to manage electricity use more efficiently, have drawn investor interest as utilities step up spending on projects that reduce energy costs.

Copenhagen will be positive for energy efficiency companies like Comverge and EnerNOC and for makers of advanced power meters, such as Itron Inc, said industry experts, who pointed out the technology is critical to the fight against global warming.

"We might see some corporate announcements in Copenhagen around companies making decisions to move further toward energy efficiency," analyst Craig Irwin of Wedbush Morgan Securities said.

A formal summit of more than 120 world leaders will try to break the deadlock on who should cut greenhouse gas emissions, by how much, and who should pay.

The Copenhagen summit raises awareness that utilities are increasingly going to be held accountable, said Michael Picchi, interim chief executive of Comverge.

The conference is seen as a further boost for companies like Badger Meter Inc, Esco Technologies, Echelon Corp and PowerSecure International Inc and follows a stimulus plan unveiled in October for smart grid technology providers.

U.S. President Barack Obama, who announced the $3.4 billion package to help build a smart electric grid, also proposed a target to cut his country's greenhouse gas emissions by 17 percent from 2005 levels by 2020.

The U.S. efforts should provide a good example to others who want to emulate them, said Christine Tezak, a senior research analyst for energy and environmental policy at Robert W. Baird.

Though there will be an increased emphasis on upgrading the technology element of utility grids around the world, some analysts feel it will be a multi-decade process.

Any new emission curbs that are implemented in the developed world are going to require an acceleration of adoption of smart grid technologies, but the developing world is unlikely to take them up in the near term, analyst Stuart Bush of RBC Capital Markets said.

Globally, about $20 billion to $30 billion will be spent on smart grid projects over the next five years, he added.

Analysts do not yet see any significant adoption of smart grid plans by China and India, but they said the European Union would be a big opportunity.

Industry experts, however, do not currently expect legislation that forces companies to act.

"We are going to have an agreement in principle coming out of here (Copenhagen), but not anything binding," said Mike Gordon, the president of privately held CPower, who is attending the Copenhagen conference.

Analysts expect a lot of corporate responsibility in America with Fortune 500 companies taking initiatives to adopt more environmentally responsible policies.

"We need to get to a couple of hundred billion dollars of private sector commitment," Gordon said.

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Maryland’s renewable energy facilities break pollution rules, say groups calling for enforcement

Maryland Renewable Energy Violations highlight RPS compliance gaps as facilities selling renewable energy certificates, including waste-to-energy, biomass, and paper mills, face emissions and permit issues, prompting PSC and Attorney General scrutiny of environmental standards.

 

Key Points

Alleged RPS noncompliance by REC-eligible plants, prompting PSC review and potential decertification under Maryland law.

✅ Complaint targets waste-to-energy, biomass plants, and paper mills

✅ Facilities risk loss of REC certification for environmental violations

✅ PSC may investigate nonreporting; AG reviewing evidence

 

Many facilities that supply Maryland with renewable energy have exceeded pollution limits or otherwise broken environmental rules, violating a state law, according to a complaint sent by environmental groups to state energy and law enforcement officials.

Maryland law says that any company that contributes to a state renewable energy goal — half the state’s energy portfolio must come from renewable sources by 2030 — must “substantially comply” with rules on air and water quality and waste management. The complaint says more than two dozen power generators, including paper mills and trash incinerators, have records of formal or informal enforcement actions by environmental authorities.

For years, environmental groups have criticized Maryland policy that counts power plants that produce planet-warming carbon dioxide and health-threatening pollution as “renewable” energy generation, and similar tensions have emerged in California’s reliance on fossil fuels despite ambitious targets, but lawmakers concerned about protecting industrial jobs have resisted reforms. The renewable label qualifies the companies for subsidies drawn from energy bills across the state.

In a complaint filed this week, the groups asked the attorney general and Public Service Commission to step in.

“We’re subsidizing companies to produce dirty energy, but we’re also using ratepayer money to support companies that in many instances are paying environmental fines or just flouting the law,” said Timothy Whitehouse, executive director of Public Employees for Environmental Responsibility. “There’s no one to hold them to account in Maryland.”

A spokeswoman for Attorney General Brian Frosh said his office would review the complaint, which was signed by Whitehouse and Mike Ewall, executive director of the Energy Justice Network.

Public Service Commission officials said the facilities must notify them if found out of compliance with environmental rules, while at the federal level FERC action on aggregated DERs is shaping market participation, and the commission can then revoke certification under the state renewable energy program. In a statement, commission officials said they would launch an investigation if any facility had failed to notify them of any environmental violations, and encouraged anyone with evidence of such a transgression to file a complaint.

Companies named in the document accused the groups of painting an inaccurate picture.

“This complaint is based on misleading arguments designed to halt waste-to-energy practices that have clear environmental benefits recognized by the global scientific community,” said Jim Connolly, vice president of environment, health and safety for Wheelabrator, which owns a Baltimore trash incinerator.

Maryland launched its renewable energy program in 2004, diversifying the state’s energy portfolio with more environmentally friendly sources of power, even as regional debates over a Maine-Québec transmission line highlight cross-border impacts. Under the program, separate from the electricity they generate and sell to the grid, renewable power facilities can sell what are known as renewable energy certificates. Utilities such as Baltimore Gas and Electric Co. are required to buy a growing number of the certificates each year, essentially subsidizing the renewable energy facilities with money from ratepayer bills.

A dozen types of power generation qualify to sell the certificates: Solar, wind, geothermal and hydroelectric plants, as well as “biomass” facilities that burn wood and other organic matter, waste-to-energy plants that burn household trash and paper mills that burn a byproduct known as black liquor.

The complaint focuses on waste incinerators, biomass plants and paper mills, all of which environmental groups have cast as counter to the renewable energy program’s environmental goals, even as ACORE criticized a coal and nuclear subsidy proposal in federal proceedings.

“By subsidizing these corporations, Maryland is diverting the hard-earned income of Maryland ratepayers to wealthy corporations with poor environmental compliance records and undermining the state’s transition to clean renewable energy,” Whitehouse and Ewall wrote.

For example, they note that the Wheelabrator plant in Southwest Baltimore has been fined for exceeding mercury limits in the past. That occurred in 2011, when the plant settled with state regulators for violations in 2010 and 2009.

Connolly said there is “no question” the facility complies with Maryland’s renewable energy law.

Incinerators in Montgomery County and in Fairfax County, Virginia, that are owned by Covanta and sell the energy certificates in Maryland have been cited for accidental fires inside both facilities. The Maryland incinerator violated emissions rules in 2014, the same year that New Jersey forbade the Virginia facility from selling energy certificates into that state’s renewable energy program over concerns it wasn’t following ash testing regulations.

James Regan, a spokesman for Covanta, said both facilities “have excellent compliance records and they operate well below their permitted limits.” He said the Virginia facility is complying with ash testing requirements, and that both facilities emit far lower levels of pollutants such as particulate matter than vehicles do.

“It’s clear to us there’s a lot of misleading and wrong information in this document," Regan said.

The Environmental Protection Agency endorsed waste-to-energy facilities under former President Barack Obama because, while burning household trash emits carbon dioxide, scientists said that still had a smaller impact on global warming than sending trash to landfills, even as industry groups have backed the EPA in a legal challenge to the ACE rule as regulatory approaches shifted.

Environmentalists and community groups say the facilities still are harmful because they emit high levels of pollutants such as mercury, nitrogen oxides and lead. The concerns prompted Baltimore City Council to pass an ordinance in February that tightened emissions limits on the Wheelabrator facility, even as the new EPA pollution limits for coal and gas plants are being proposed, so dramatically that the company said it would no longer be able to operate once the rules go into effect in 2022.

The complaint does not mention the century-old Luke paper mill in Western Maryland that long faced criticism for its participation in the renewable energy program, but which owner Verso Co. closed this year.

It does say several of paper company WestRock’s mills in North Carolina and Virginia have faced both formal and informal EPA enforcement actions for violation of the Clean Water Act, including evolving EPA wastewater limits for power plants and other facilities, and the Clean Air Act. A WestRock spokesperson could not be reached for comment.

The complaint also says a large biomass facility in South Boston, Virginia, owned by the Northern Virginia Electric Cooperative has a record of noncompliance with the Clean Air Act over three years.

John Rainey, the plant’s operations director, said it “experienced some small exceedances to its permit limits,” but that it addressed the issues with Virginia environmental officials and has installed new technology.

All those plants have sold credits in Maryland.

Whitehouse said the environmental groups’ goal is to clean up Maryland’s renewable energy program. They did not file a lawsuit because he said there was no clear cause of action to take the state to court, but said he hopes the complaint nonetheless spurs action.

“It’s not acceptable in a clean energy program that we’re subsidizing some of the most dirty sources of energy,” he said. “Those sources aren’t even in compliance with the law, and no one seems to care.”

 

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TTC Bans Lithium-Ion-Powered E-Bikes and Scooters During Winter Months for Safety

TTC Winter E-Bike and E-Scooter Ban addresses lithium-ion battery safety, mitigating fire risk on Toronto public transit during cold weather across buses, subways, and streetcars, while balancing micro-mobility access, infrastructure gaps, and evolving regulations.

 

Key Points

A seasonal TTC policy limiting lithium-ion e-bikes and scooters on transit in winter to cut battery fire risk.

✅ Targets lithium-ion fire hazards in confined transit spaces

✅ Applies Nov-Mar across buses, subways, and streetcars

✅ Sparks debate on equity, accessibility, and policy alternatives

 

The Toronto Transit Commission (TTC) Board recently voted to implement a ban on lithium-ion-powered electric bikes (e-bikes) and electric scooters during the winter months, a decision that reflects growing safety concerns. This new policy has generated significant debate within the city, particularly regarding the role of these transportation modes in the lives of Torontonians, and the potential risks posed by the technology during cold weather.

A Growing Safety Concern

The move to ban lithium-ion-powered e-bikes and scooters from TTC services during the winter months stems from increasing safety concerns related to battery fires. Lithium-ion batteries, commonly used in e-bikes and scooters, are known to pose a fire risk, especially in colder temperatures, and as systems like Metro Vancouver's battery-electric buses expand, robust safety practices are paramount. In recent years, Toronto has experienced several high-profile incidents involving fires caused by these batteries. In some cases, these fires have occurred on TTC property, including on buses and subway cars, raising alarm among transit officials.

The TTC Board's decision was largely driven by the fear that the cold temperatures during winter months could make lithium-ion batteries more prone to malfunction, leading to potential fires. These batteries are particularly vulnerable to damage when exposed to low temperatures, which can cause them to overheat or fail during charging or use. Since public transit systems are densely populated and rely on close quarters, the risk of a battery fire in a confined space such as a bus or subway is considered too high.

The New Ban

The new rule, which is expected to take effect in the coming months, will prohibit e-bikes and scooters powered by lithium-ion batteries from being brought onto TTC vehicles, including buses, streetcars, and subway trains, even as the agency rolls out battery electric buses across its fleet, during the winter months. While the TTC had previously allowed passengers to bring these devices on board, it had issued warnings regarding their safety. The policy change reflects a more cautious approach to mitigating risk in light of growing concerns.

The winter months, typically from November to March, are when these batteries are at their most vulnerable. In addition to environmental factors, the challenges posed by winter weather—such as snow, ice, and the damp conditions—can exacerbate the potential for damage to these devices. The TTC Board hopes the new ban will prevent further incidents and keep transit riders safe.

Pushback and Debate

Not everyone agrees with the TTC Board's decision. Some residents and advocacy groups have expressed concern that this ban unfairly targets individuals who rely on e-bikes and scooters as an affordable and sustainable mode of transportation, while international examples like Paris's e-scooter vote illustrate how contentious rental devices can be elsewhere, adding fuel to the debate. E-bikes, in particular, have become a popular choice among commuters who want an eco-friendly alternative to driving, especially in a city like Toronto, where traffic congestion can be severe.

Advocates argue that instead of an outright ban, the TTC should invest in safer infrastructure, such as designated storage areas for e-bikes and scooters, or offer guidelines on how to safely store and transport these devices during winter, and, in assessing climate impacts, consider Canada's electricity mix alongside local safety measures. They also point out that other forms of electric transportation, such as electric wheelchairs and mobility scooters, are not subject to the same restrictions, raising questions about the fairness of the new policy.

In response to these concerns, the TTC has assured the public that it remains committed to finding alternative solutions that balance safety with accessibility. Transit officials have stated that they will continue to monitor the situation and consider adjustments to the policy if necessary.

Broader Implications for Transportation in Toronto

The TTC’s decision to ban lithium-ion-powered e-bikes and scooters is part of a broader conversation about the future of transportation in urban centers like Toronto. The rise of electric micro-mobility devices has been seen as a step toward reducing carbon emissions and addressing the city’s growing congestion issues, aligning with Canada's EV goals that push for widespread adoption. However, as more people turn to e-bikes and scooters for daily commuting, concerns about safety and infrastructure have become more pronounced.

The city of Toronto has yet to roll out comprehensive regulations for electric scooters and bikes, and this issue is further complicated by the ongoing push for sustainable urban mobility and pilots like driverless electric shuttles that test new models. While transit authorities grapple with safety risks, the public is increasingly looking for ways to integrate these devices into a broader, more holistic transportation system that prioritizes both convenience and safety.

The TTC’s decision to ban lithium-ion-powered e-bikes and scooters during the winter months is a necessary step to address growing safety concerns in Toronto's public transit system. Although the decision has been met with some resistance, it highlights the ongoing challenges in managing the growing use of electric transportation in urban environments, where initiatives like TTC's electric bus fleet offer lessons on scaling safely. With winter weather exacerbating the risks associated with lithium-ion batteries, the policy seeks to reduce the chances of fires and ensure the safety of all transit users. As the city moves forward, it will need to find ways to balance innovation with public safety to create a more sustainable and safe urban transportation network.

 

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BC announces grid development, job creation

BC Hydro Power Pathway accelerates electrification with clean energy investments, new transmission lines, upgraded substations, and renewable projects like wind and solar, strengthening the grid, supporting decarbonization, and creating jobs across British Columbia's growing economy.

 

Key Points

A $36B, 10-year BC Hydro plan to expand clean power infrastructure, accelerate electrification, and support jobs.

✅ $36B for new lines, substations, dam upgrades, and distribution

✅ Supports 10,500-12,500 jobs per year across B.C.

✅ Adds wind and solar, leveraging hydro to balance renewables

 

BC Hydro is gearing up for a decade of extensive construction to enhance British Columbia's electrical system, supporting a burgeoning clean economy and community growth while generating new employment opportunities.

Premier David Eby emphasized the necessity of expanding the electrical system for industrial growth, residential needs, and future advancements. He highlighted the role of clean, affordable energy in reducing pollution, securing well-paying jobs, and fostering economic growth.

At the B.C. Natural Resources Forum in Prince George, Premier Eby unveiled a $36-billion investment plan for infrastructure projects in communities and regions and green energy solutions to provide clean, affordable electricity for future generations.

The Power Pathway: Building BC’s Energy Future, BC Hydro’s revised 10-year capital plan, involves nearly $36 billion in investments across the province from 2024-25 to 2033-34. This marks a 50% increase from the previous plan of $24 billion and includes a substantial rise in electrification and emissions-reduction projects (nearly $10 billion, up from $1 billion).

These upcoming construction projects are expected to support approximately 10,500 to 12,500 jobs annually. The plan is set to bolster and sustain BC Hydro’s capital investments as significant projects like Site C are near completion.

The plan addresses the increasing demand for electricity due to population and housing growth, industrial development, such as a major hydrogen project, and the transition from fossil fuels to clean electricity. Key projects include constructing new high-voltage transmission lines from Prince George to Terrace, building or expanding substations in high-growth areas, and upgrading dams and generating facilities for enhanced safety and efficiency.

Minister of Energy, Mines, and Low Carbon Innovation Josie Osborne stated that this plan aims to build a clean energy future and support EV charging expansion while creating construction jobs. With BC Hydro’s capital plan allocating almost $4 billion annually for the next decade, it will drive economic growth and ensure access to clean, affordable electricity.

BC Hydro aims to add new clean, renewable energy sources like wind and solar, while acknowledging power supply challenges that must be managed as capacity grows. B.C.’s hydroelectric dams, functioning as batteries, enable the integration of intermittent renewables into the grid, providing reliable backup.

Chris O’Riley, president and CEO of BC Hydro, said the grid is one of the world’s cleanest. The new $36 billion capital plan encompasses investments in generation assets, large transmission infrastructure, and local distribution networks.

In partnership with BC Hydro, Premier Eby also announced a new streamlined approval process to expedite electrification for high-demand industries and support job creation, complementing measures like the BC Hydro rebate and B.C. Affordability Credit that help households.

Minister of Environment and Climate Change Strategy George Heyman highlighted the importance of rapid electrification in collaboration with the private sector to achieve CleanBC climate goals by 2030, including corridor charging via the BC's Electric Highway, and maintain the competitiveness of B.C. industries. The new process will streamline approvals for industrial electrification projects, enhancing efficiency and funding certainty.

 

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Lebanon Cabinet approves watershed electricity sector reform

Lebanon Electricity Sector Reform aims to overhaul tariffs, modernize the grid, cut fuel oil subsidies, unlock donor loans, and deliver 24-hour power, restructuring EDL governance, boosting generation capacity, and reducing the budget deficit.

 

Key Points

A plan to restructure EDL, adjust tariffs, add capacity, and cut subsidies to deliver 24-hour power and reduce deficits.

✅ New tariffs and phased cost recovery

✅ Added generation capacity and grid modernization

✅ Governance reform of EDL and loss reduction

 

Lebanon’s Cabinet has approved a much-anticipated plan to restructure the country’s dysfunctional electricity sector, as Beirut power challenges continue to underscore chronic gaps, which hasn’t been developed since the time of the country’s civil war, decades ago.

The Lebanese depend on a network of private generator providers and decrepit power plants that rely on expensive fuel oil, while Israeli power supply competition seeks to lower consumer prices in a nearby market. Subsidies to the state electricity company cost nearly $2 billion a year.

For years, reform of the electricity sector, echoed by EU electricity market revamp, has been a major demand of Lebanon’s population of over 5 million. But frequent political stalemates, corruption and infighting among politicians, entrenched since the civil war that began in 1975, often derailed reforms.

International donors have called for reforms, including in the electricity sector, to unlock $11 billion in soft loans and grants pledged last year, as regional initiatives like the Jordan-Saudi electricity linkage move ahead to strengthen interconnections. Prime Minister Saad Hariri said Monday that the new plan will eventually provide 24-hour electricity.

Energy Minister Nada Boustani said that if there were no obstacles, residents could start feeling the difference next year, as an electricity market overhaul advances alongside the plan.

The plan, which is expected to get parliament approval, will reform the state electricity company, introduce new pricing policies, with international examples like France's electricity pricing scheme, and boost power production.

“This plan will also reduce the budget deficit,” Hariri told reporters. “This is positive and all international ratings companies will see … that Lebanon is taking real steps to reform in this sector.”

Lebanon’s soaring debt prompted rating agencies to downgrade the country’s credit ratings in January over concerns the government may not be able to pay its debts. Unemployment is believed to be at 36 per cent and more than 1 million Syrian refugees have overwhelmed the already aging infrastructure, while policy debates like Alberta electricity market changes illustrate different approaches to balancing cost and reliability.

Boustani told the Al-Manar TV that the electricity sector should be spared political bickering and populist approaches.

 

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Alberta creates fund to help communities hit by coal phase-out

Alberta Coal Community Transition Fund backs renewables, natural gas, and economic diversification, offering grants, workforce retraining, and community development to municipalities and First Nations as Alberta phases out coal-fired power by 2030.

 

Key Points

A provincial grant helping coal-impacted communities diversify, retrain workers, and transition to renewables by 2030.

✅ Grants for municipalities and First Nations

✅ Supports diversification and job retraining

✅ Focus on renewables, natural gas, and new sectors

 

The Coal Community Transition Fund is open to municipalities and First Nations affected as Alberta phases out coal-fired electricity by 2030 under the federal coal plan to focus on renewables and natural gas.

Economic Development Minister Deron Bilous says the government wants to ensure these communities thrive through the transition, aligning with views that fossil-fuel workers support the energy transition across the economy.

“Residents in our communities have concerns about the transition away from coal, even as discussions about phasing out fossil fuels in B.C. unfold nationally,” Rod Shaigec, mayor of Parkland County, said.

“They also have ideas on how we can mitigate the impacts on workers and diversify our economy, including clean energy partnerships to create new employment opportunities for affected workers. We are working to address those concerns and support their ideas. This funding means we can make those ideas a reality in various economic sectors of opportunity.”

The coal-mining town of Hanna, northeast of Calgary, has already received $450,000 through the program to work on economic diversification, exploring options like bridging the Alberta-B.C. electricity gap that could support new industries.

The application deadline for the coal transition fund is the end of November.

A provincial advisory panel is also expected to report back this fall on ways to create new jobs and retrain workers during the coal phase-out.

 

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Turning thermal energy into electricity

Near-Field Thermophotovoltaics captures radiated energy across a nanoscale gap, using thin-film photovoltaic cells and indium gallium arsenide to boost power density and efficiency, enabling compact Army portable power from emitters via radiative heat transfer.

 

Key Points

A nanoscale TPV method capturing near-field photons for higher power density at lower emitter temperatures.

✅ Nanoscale gap boosts radiative transfer and usable photon flux

✅ Thin-film InGaAs cells recycle sub-band-gap photons via reflector

✅ Achieved ~5 kW/m2 power density with higher efficiency

 

With the addition of sensors and enhanced communication tools, providing lightweight, portable power has become even more challenging, with concepts such as power from falling snow illustrating how diverse new energy-harvesting approaches are. Army-funded research demonstrated a new approach to turning thermal energy into electricity that could provide compact and efficient power for Soldiers on future battlefields.

Hot objects radiate light in the form of photons into their surroundings. The emitted photons can be captured by a photovoltaic cell and converted to useful electric energy. This approach to energy conversion is called far-field thermophotovoltaics, or FF-TPVs, and has been under development for many years; however, it suffers from low power density and therefore requires high operating temperatures of the emitter.

The research, conducted at the University of Michigan and published in Nature Communications, demonstrates a new approach, where the separation between the emitter and the photovoltaic cell is reduced to the nanoscale, enabling much greater power output than what is possible with FF-TPVs for the same emitter temperature.

This approach, which enables capture of energy that is otherwise trapped in the near-field of the emitter is called near-field thermophotovoltaics or NF-TPV and uses custom-built photovoltaic cells and emitter designs ideal for near-field operating conditions, alongside emerging smart solar inverters that help manage conversion and delivery.

This technique exhibited a power density almost an order of magnitude higher than that for the best-reported near-field-TPV systems, while also operating at six-times higher efficiency, paving the way for future near-field-TPV applications, including remote microgrid deployments in extreme environments, according to Dr. Edgar Meyhofer, professor of mechanical engineering, University of Michigan.

"The Army uses large amounts of power during deployments and battlefield operations and must be carried by the Soldier or a weight constrained system," said Dr. Mike Waits, U.S. Army Combat Capabilities Development Command's Army Research Laboratory. "If successful, in the future near-field-TPVs could serve as more compact and higher efficiency power sources for Soldiers as these devices can function at lower operating temperatures than conventional TPVs."

The efficiency of a TPV device is characterized by how much of the total energy transfer between the emitter and the photovoltaic cell is used to excite the electron-hole pairs in the photovoltaic cell, where insights from near-light-speed conduction research help contextualize performance limits in semiconductors. While increasing the temperature of the emitter increases the number of photons above the band-gap of the cell, the number of sub band-gap photons that can heat up the photovoltaic cell need to be minimized.

"This was achieved by fabricating thin-film TPV cells with ultra-flat surfaces, and with a metal back reflector," said Dr. Stephen Forrest, professor of electrical and computer engineering, University of Michigan. "The photons above the band-gap of the cell are efficiently absorbed in the micron-thick semiconductor, while those below the band-gap are reflected back to the silicon emitter and recycled."

The team grew thin-film indium gallium arsenide photovoltaic cells on thick semiconductor substrates, and then peeled off the very thin semiconductor active region of the cell and transferred it to a silicon substrate, informing potential interfaces with home battery systems for distributed use.

All these innovations in device design and experimental approach resulted in a novel near-field TPV system that could complement distributed resources in virtual power plants for resilient operations.

"The team has achieved a record ~5 kW/m2 power output, which is an order of magnitude larger than systems previously reported in the literature," said Dr. Pramod Reddy, professor of mechanical engineering, University of Michigan.

Researchers also performed state-of-the-art theoretical calculations to estimate the performance of the photovoltaic cell at each temperature and gap size, informing hybrid designs with backup fuel cell solutions that extend battery life, and showed good agreement between the experiments and computational predictions.

"This current demonstration meets theoretical predictions of radiative heat transfer at the nanoscale, and directly shows the potential for developing future near-field TPV devices for Army applications in power and energy, communication and sensors," said Dr. Pani Varanasi, program manager, DEVCOM ARL that funded this work.

 

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