This Thin-Film Turns Heat Waste From Electronics Into Electricity


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Pyroelectric Energy Harvesting captures low-grade heat via thin-film materials, converting temperature fluctuations into power for waste heat recovery in electronics, vehicles, and industrial machinery, offering a thermoelectric alternative for microelectronics and exascale systems.

 

Key Points

Thin-film pyroelectric harvesting turns temperature changes into electricity, enabling low-grade waste heat recovery.

✅ Converts low-grade heat fluctuations into usable power

✅ Thin-film design suits microelectronics and edge devices

✅ Alternative to thermoelectrics for waste heat recovery

 

The electronic device you are reading this on is currently producing a modest to significant amount of waste heat that emerging thermoelectric materials could help recover in principle. In fact, nearly 70% of the energy produced annually in the US is ultimately wasted as heat, much of it less than 100 degrees Celsius. The main culprits are computers and other electronic devices, vehicles, as well as industrial machinery. Heat waste is also a big problem for supercomputers, because as more circuitry is condensed into smaller and smaller areas, the hotter those microcircuits get.

It’s also been estimated that a single next-generation exascale supercomputer could feasibly use up to 10% of the energy output of just one coal-fired power station, and that nearly all of that energy would ultimately be wasted as heat.

What if it were possible to convert that heat energy into a useable energy source, and even to generate electricity at night from temperature differences as well?

#google#

It’s not a new idea, of course. In fact the possibility of thermoelectric energy generation, where thermal energy is turned into electricity was recognised as early as 1821, around the same time that Michael Faraday developed the electric motor.

Unfortunately, when the heat source is ‘low grade’, aka less than 100 degrees Celsius, a number of limitations arise, and related approaches for nighttime renewable generation face similar challenges as well. For it to work well, you need materials that have quite high electrical conductivity, but low thermal conductivity. It’s not an easy combination to come by.

Taking a different approach, researchers at the University of California, Berkeley, have developed thin-film that uses pyroelectric harvesting to capture heat-waste and convert heat to electricity in prototype demonstrations. The findings were published today in Nature Materials.

 

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UK leads G20 for share of electricity sourced from wind

UK Wind Power Leadership in 2020 highlights record renewable energy growth, G20-leading wind share, rapid coal phase-out, and rising solar integration, advancing decarbonization targets under the Paris Agreement and momentum ahead of COP26.

 

Key Points

The UK led the G20 in wind power share in 2020, displacing coal, expanding solar, and cutting power-sector emissions.

✅ G20-leading wind share; second for combined wind and solar

✅ Fastest coal decline among G20 from 2015 to 2020

✅ Emissions risk rising as post-pandemic demand returns

 

Nearly a quarter of the UK’s electricity came from wind turbines in 2020 – making the country the leader among the G20 for share of power sourced from the renewable energy, a new analysis finds.

The UK also moved away from coal power at a faster rate than any other G20 country from 2015 to 2020, according to the results.

And it ranked second in the G20, behind Germany, for the proportion of electricity sourced from both wind and solar in 2020, after first surpassing coal in 2016.

“It’s crazy how much wind power has grown in the UK and how much it has offset coal, and how it’s starting to eat at gas,” Dave Jones, Ember’s global lead analyst, told The Independent.

But it is important to bear in mind that “we’re only doing a great job by the standards of the rest of the world”, he added, noting that low-carbon generation stalled in 2019 in the UK.

Ember’s Global Electricity Review notes that the world’s power sector emissions were two per cent higher in 2020 than in 2015 – the year that countries agreed to slash their greenhouse gas pollution as part of the Paris Agreement.

Power generated from coal fell by a record amount from 2019 to 2020, the analysis finds. However, this decline was greatly facilitated by lockdowns introduced to stop the spread of Covid-19, as global electricity demand was temporarily stifled before rebounding, the analysts say.

Coal is the most polluting of the fossil fuels. The UK government hopes to convince all countries to stop building new coal-fired power stations at Cop26, a climate conference that is to be held in Glasgow later this year.

UN chief Antonio Guterres has also called for all countries to end their “deadly addiction to coal”.

At a summit held earlier this month, he described ending the use of coal in electricity generation as the “single most important step” to meeting the Paris Agreement’s goal of limiting global warming to well below 2C above pre-industrial levels by 2100.

“There is definitely a concern that, in the pandemic year of 2020, coal hasn’t fallen as fast as it needed to,” said Mr Jones, even as the UK set coal-free power records recently.

“There is concern that, once electricity demand returns, we won’t be seeing that decline in coal anymore.”

 

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Spread of Electric Cars Sparks Fights for Control Over Charging

Utility-Controlled EV Charging shapes who builds charging stations as utilities, regulators, and private networks compete over infrastructure, grid upgrades, and pricing, impacting ratepayers, competition, and EV adoption across states seeking cleaner transport.

 

Key Points

Utility-controlled EV charging is utilities building charging networks affecting rates, competition and grid costs.

✅ Regulated investment may raise rates before broader savings.

✅ Private firms warn monopolies stifle competition and innovation.

✅ Regulators balance access, equity, and grid upgrade needs.

 

Electric vehicles are widely seen as the automobile industry’s future, but a battle is unfolding in states across America over who should control the charging stations that could gradually replace fuel pumps.

From Exelon Corp. to Southern California Edison, utilities have sought regulatory approval to invest millions of dollars in upgrading their infrastructure as state power grids adapt to increased charging demand, and, in some cases, to own and operate chargers.

The proposals are sparking concerns from consumer advocates about higher electric rates and oil companies about subsidizing rivals. They are also drawing opposition from startups that say the successors to gas stations should be open to private-sector competition, not controlled by monopoly utilities.

That debate is playing out in regulatory commissions throughout the U.S. as states and utilities promote wider adoption of electric vehicles. At stake are charging infrastructure investments expected to total more than $13 billion over the next five years, as an American EV boom accelerates, according to energy consulting firm Wood Mackenzie. That would cover roughly 3.2 million charging outlets.

Calvin Butler Jr., who leads Exelon’s utilities business, said many states have grown more open to the idea of utilities becoming bigger players in charging as electric vehicles have struggled to take off in the U.S., where they make up only around 2% of new car sales.

“When the utilities are engaged, there’s quicker adoption because the infrastructure is there,” he said.

Major auto makers including General Motors Co. and Ford Motor Co. are accelerating production of electric vehicles, and models like Tesla’s Model 3 are shaping utility planning, and a number of states have set ambitious EV goals—most recently California, which aims to ban the sale of new gasoline-powered cars by 2035. But a patchy charging-station network remains a huge impediment to mass EV adoption.

Democratic presidential candidate Joe Biden has called for building more than 500,000 new public charging outlets in a decade as part of his plan to combat climate change, amid Biden’s push to electrify the transportation sector. But exactly how that would happen is unclear. The U.S. currently has fewer than 100,000 public outlets, according to the Energy Department. President Trump, who has weakened federal tailpipe emissions targets, hasn’t put forward an electric-vehicle charging plan, though he backed a 2019 transportation bill that would have provided $1 billion in grants to build alternative fueling infrastructure, including for electric vehicles.

Charging access currently varies widely by state, as does utility involvement, with many utilities bullish course on EV charging to support growth, which can range from providing rebates on home chargers to preparing sites for public charging—and even owning and operating the equipment needed to juice up electric vehicles.

As of September, regulators in 24 states had signed off on roughly $2.6 billion of utility investment in transportation electrification, according to Atlas Public Policy, a Washington, D.C., policy firm. More than half of that spending was authorized in California, where electric vehicle adoption is highest.

Nearly a decade ago, California blocked utilities from owning most charging equipment, citing concerns about potentially stifling competition. But the nation’s most populous state reversed course in 2014, seeking to spur electrification.

Regulators across the country have since been wrestling with similar questions, generating a patchwork of rules.

Maryland regulators signed off last year on a pilot program allowing subsidiaries of Exelon and FirstEnergy Corp. to own and operate public charging stations on government property, provided that the drivers who use them cover at least some of the costs.

Months later, the District of Columbia rejected an Exelon subsidiary’s request to own public chargers, saying independent charging companies had it covered.

Some charging firms argue utilities shouldn’t be given monopolies on car charging, though they might need to play a role in connecting rural customers and building stations where they would otherwise be uneconomical.

“Maybe the utility should be the supplier of last resort,” said Cathy Zoi, chief executive of charging network EVgo Services LLC, which operates more than 800 charging stations in 34 states.

Utility charging investments generally are expected to raise customers’ electricity bills, at least initially. California recently approved the largest charging program by a single utility to date: a $436 million initiative by Southern California Edison, an arm of Edison International, as the state also explores grid stability opportunities from EVs. The company said it expects the program to increase the average residential customer’s bill by around 50 cents a month.

But utilities and other advocates of electrification point to studies indicating greater EV adoption could help reduce electricity rates over time, by giving utilities more revenue to help cover system upgrades.

Proponents of having utilities build charging networks also argue that they have the scale to do so more quickly, which would lead to faster EV adoption and environmental improvements such as lower greenhouse gas emissions and cleaner air. While the investments most directly help EV owners, “they accrue immediate benefits for everyone,” said Jill Anderson, a Southern California Edison senior vice president.

Some consumer advocates are wary of approving extensive utility investment in charging, citing the cost to ratepayers.

“It’s like, ‘Pay me now, and maybe someday your rates will be less,’” said Stefanie Brand, who advocates on behalf of ratepayers for the state of New Jersey, where regulators have yet to sign off on any utility proposals to invest in electric vehicle charging. “I don’t think it makes sense to build it hoping that they will come.”

Groups representing oil-and-gas companies, which stand to lose market share as people embrace electric vehicles, also have criticized utility charging proposals.

“These utilities should not be able to use their monopoly power to use all of their customers’ resources to build investments that definitely won’t benefit everybody, and may or may not be economical at this point,” said Derrick Morgan, who leads federal and regulatory affairs at the American Fuel & Petrochemical Manufacturers, a trade organization.

Utility executives said their companies have long been used to further government policy objectives deemed to be in the public interest, drawing on lessons from 2021 to guide next steps, such as improving energy efficiency.

“This isn’t just about letting market forces work,” said Mike Calviou, senior vice president for strategy and regulation at National Grid PLC’s U.S. division.

 

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US Army deploys its first floating solar array

Floating Solar at Fort Bragg delivers a 1 MW DoD-backed floatovoltaic array on Big Muddy Lake, boosting renewable energy, resilience, and efficiency via water cooling, with Duke Energy and Ameresco supporting backup power.

 

Key Points

A 1 MW floating PV array on Big Muddy Lake, built by the US Army to boost efficiency, resilience, and backup power.

✅ 1 MW array supplies backup power for training facilities.

✅ Water cooling improves panel efficiency and output.

✅ Partners: Duke Energy, Ameresco; DoD's first floating solar.

 

Floating solar had a moment in the spotlight over the weekend when the US Army unveiled a new solar plant sitting atop the Big Muddy Lake at Fort Bragg in North Carolina. It’s the first floating solar array deployed by the Department of Defense, and it’s part of a growing current of support in the US for “floatovoltaics” and other innovations like space-based solar research.

The army says its goal is to boost clean energy, support goals in the Biden solar plan for decarbonization, reduce greenhouse gas emissions, and give the nearby training facility a source of backup energy during power outages. The panels will be able to generate about one megawatt of electricity, which can typically power about 190 homes, and, when paired with solar batteries, enhance resilience during extended outages.

The installation, the largest in the US Southeast, is a big win for floatovoltaics, and projects like South Korea’s planned floating plant show global momentum for the technology, which has yet to make a big splash in the US. They only make up 2 percent of solar installations annually in the country, according to Duke Energy, which collaborated with Fort Bragg and the renewable energy company Ameresco on the project, even as US solar and storage growth accelerates nationwide.

Upfront costs for floating solar have typically been slightly more expensive than for its land-based counterparts. The panels essentially sit on a sort of raft that’s tethered to the bottom of the body of water. But floatovoltaics come with unique benefits, complementing emerging ocean and river power approaches in water-based energy. Hotter temperatures make it harder for solar panels to produce as much power from the same amount of sunshine. Luckily, sitting atop water has a cooling effect, which allows the panels to generate more electricity than panels on land. That makes floating solar more efficient and makes up for higher installation costs over time.

And while solar in general has already become the cheapest electricity source globally, it’s pretty land-hungry, so complementary options like wave energy are drawing interest worldwide. A solar farm might take up 20 times more land than a fossil fuel power plant to produce a gigawatt of electricity. Solar projects in the US have already run into conflict with some farmers who want to use the same land, for example, and with some conservationists worried about the impact on desert ecosystems.

 

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Olympus to Use 100% Renewable Electricity

Olympus Renewable Energy Initiative reduces CO2 emissions by sourcing 100% clean electricity at major Japan R&D and manufacturing sites, accelerating ESG goals toward net zero, decarbonization, and TCFD-aligned sustainability across global operations.

 

Key Points

Olympus's program to source renewable power, cut CO2, and reach net-zero site operations by 2030.

✅ 100% renewable electricity at major Japan R&D and manufacturing sites

✅ Expected 70% renewable share of electricity in FY2023

✅ Net-zero site operations targeted company-wide by 2030

 

Olympus Corporation announces that from April 2022, the company has begun to exclusively source 100% of the electricity used at its major R&D and manufacturing sites in Japan from renewable sources. As a result, CO2 emissions from Olympus Group facilities in Japan will be reduced by approximately 40,000 tons per year. The percentage of the Olympus Group's total electricity use in fiscal 2023 (ending March 2023) from renewable energy sources, including green hydrogen applications, is expected to substantially increase from approximately 14% in the previous fiscal year to approximately 70%.

Olympus has set a goal of achieving net zero CO2 emissions from its site operations by 2030, as part of its commitment to achieving environmentally responsible business growth and creating a sustainable society, aligning with Europe's push for electrification to address climate goals. This is a key goal in line with Olympus Corporation's ESG materiality targets focused on the theme of a "carbon neutral society and circular economy."

The company has already introduced a wide range of initiatives to reduce CO2 emissions. This includes the use of 100% renewable energy at some manufacturing sites in Europe, despite electricity price volatility in the region, and the United States, the installation of solar power generation facilities at some manufacturing sites in Japan, and support of the recommendations made by the Task Force on Climate-related Financial Disclosures (TCFD), alongside developments such as Honda's Ontario battery investment that signal rapid electrification.

To achieve its carbon neutral goal, Olympus will continue to optimize manufacturing processes and promote energy-saving measures, and notes that policy momentum from Canada's EV sales regulations and EPA emissions limits is accelerating complementary electrification trends, is committed to further accelerate the shift to renewable energy sources across the company, thereby contributing to the decarbonization of society on a global level, as reflected in regional labor markets like Ontario's EV jobs boom that accompany the transition.

 

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Volvo Trucks to launch complete range of electric trucks in Europe in 2021

Volvo Electric Heavy-Duty Trucks lead Europe’s e-mobility shift, meeting strict emissions rules with battery-electric drivelines, hydrogen fuel cell roadmaps, fast charging infrastructure, and autonomous freight solutions for regional haulage and urban construction.

 

Key Points

A battery-electric heavy truck range for haulage and urban construction, targeting zero emissions and compliance.

✅ Up to 44t GCW, ranges up to 300 km per charge

✅ Battery-electric now; hydrogen fuel cells targeted next

✅ Production from 2022; suited to haulage and construction

 

According to the report published by Allied Market Research, the global electric truck market generated $422.5M (approx €355.1M) in 2019 and is estimated to reach $1.89B (approx €1.58B) by 2027, registering a CAGR of 25.8% from 2020 to 2027, reflecting broader expectations that EV adoption within a decade will accelerate worldwide. 

The surge in government initiatives to promote e-mobility and stringent emission norms on vehicles using fossil fuels (petrol and diesel) is driving the growth of the global electric truck market, while shifts in the EV aftermarket are expected to reinforce this trend. 


Launching a range of electric trucks in 2021
Volvo is among the several companies, including early moves like Tesla's truck reveal efforts, trying to cash in on this popular and lucrative market. Recently, the company announced that it’s going to launch a complete heavy-duty range of trucks with electric drivelines starting in Europe in 2021. Next year, hauliers in Europe will be able to order all-electric versions of Volvo’s heavy-duty trucks. The sales will begin next year and volume production will start in 2022. 

“To reduce the impact of transport on the climate, we need to make a swift transition from fossil fuels to alternatives such as electricity. But the conditions for making this shift, and consequently the pace of the transition, vary dramatically across different hauliers and markets, depending on many variables such as financial incentives, access to charging infrastructure and type of transport operations,” explains Roger Alm, President Volvo Trucks.


Used for regional transport and urban construction operations
According to the company, it is now testing electric heavy-duty models – Volvo FH, FM, and FMX trucks, which will be used for regional transport and urban construction operations in Europe, and in the U.S., 70 Volvo VNR Electric trucks are being deployed in California initiatives as well. These Volvo trucks will offer a complete heavy-duty range with electric drivelines. These trucks will have a gross combination weight of up to 44 tonnes.

“Our chassis is designed to be independent of the driveline used. Our customers can choose to buy several Volvo trucks of the same model, with the only difference being that some are electric and others are powered by gas or diesel. As regards product characteristics, such as the driver’s environment, reliability, and safety, all our vehicles meet the same high standards. Drivers should feel familiar with their vehicles and be able to operate them safely and efficiently regardless of the fuel used,” says Alm.


Fossil free by 2040
Depending on the battery configuration the range could be up to 300 km, claims the company. Back in 2019, Volvo started manufacturing the Volvo FL Electric and FE Electric for city distribution and refuse operations, primarily in Europe, while in the van segment, Ford's all-electric Transit targets similar urban use cases. Volvo Trucks aims to start selling electric trucks powered by hydrogen fuel cells in the second half of this decade. Volvo Trucks’ objective is for its entire product range to be fossil-free by 2040.

Back in 2019, Swedish autonomous and electric freight mobility leader provider Einride’s Pod became the world’s first autonomous, all-electric truck to operate a commercial flow for DB Schenker with a permit on the public road. Last month, the company launched its next-generation Pod in the hopes to have it on the road starting from 2021, while major fleet commitments such as UPS's Tesla Semi pre-orders signal broader demand.

 

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US Electric Vehicle Momentum Slows as Globe Surges

US electric vehicle momentum is slowing as tax credits expire, tariffs increase costs, and interest rates rise, while Europe and China accelerate EV adoption through stronger incentives, enhanced charging infrastructure, and growth in battery manufacturing.

 

Why has US Electric Vehicle Momentum Slowed as Globe Surges?

US electric vehicle momentum has slowed due to expiring subsidies, rising costs, and global competition from faster-moving markets.

✅ End of federal tax credits weakened buyer demand

✅ Tariffs and high interest rates raised EV prices

✅ Europe and China expanded incentives and infrastructure

 

You could be forgiven for thinking that electric cars might finally be gaining momentum in the United States. Last year, battery-powered vehicle sales topped 1.2 million—more than five times the number sold just four years earlier, amid an early-2024 EV surge in deliveries. Hybrid sales tripled over the same period, and in August, battery cars accounted for 10 percent of all new vehicle sales, a record high according to S&P Global Mobility.

Major automakers, including General Motors, Ford, and Tesla, reported record electric-vehicle deliveries this quarter, a rare bright spot in an industry still contending with high interest rates, inflation, and tariffs, and a sign the age of electric cars is arriving.

Yet analysts warn the apparent boom may be short-lived, noting a market share dip in early 2024 that could foreshadow slower growth. Much of the recent surge was driven by buyers rushing to take advantage of a federal subsidy worth up to $7,500 per vehicle—a credit that expired at the end of September. Without it, automakers expect demand to dip sharply.

"It's going to be a vibrant industry, but it's going to be smaller, way smaller than we thought," Ford CEO Jim Farley said Tuesday. General Motors’ CFO Paul Jacobson echoed that concern: "I expect that EV demand is going to drop off pretty precipitously," he told a conference last month.

Even with those gains, the US—still the world’s second-largest car market—remains a laggard compared with global peers, where global EV adoption has accelerated rapidly. Electric and hybrid vehicles accounted for nearly 30 percent of new sales in the UK last year and approximately one in five across Europe. In China, electric models accounted for almost half of all car sales in 2023 and are expected to become the majority this year, according to the International Energy Agency.

Analysts say policy differences largely explain the gap. Other regions have offered stronger incentives, stricter emissions rules, and more aggressive trade-in programs. President Joe Biden tried to close the gap, tightening emissions standards, offering loans for EV investments, and spending billions on charging networks while expanding the $7,500 credit. His goal was to have half of all US vehicle sales be electric by 2030.

Supporters argue that such measures are crucial to keeping American carmakers competitive with Chinese and European manufacturers. But former President Donald Trump, who recently dismissed climate change as a "con job," has vowed to roll back many of those initiatives, echoing arguments that the EV revolution is overstated by proponents. "We're saying ... you're not going to be forced to make all of those cars," Trump said this summer, while signing a bill to strike down California’s plan to phase out gasoline-only car sales by 2035. "You can make them, but it'll be by the market, judged by the market."

Although EVs have become cheaper, they still cost more than comparable gasoline models, and sales remain behind gas cars in most segments. The average US electric car sold for approximately $57,000 in August, which is roughly 16 percent higher than the overall average, according to Kelley Blue Book.

Chinese EV giants such as BYD have been blocked from the US market by tariffs supported by both Biden and Trump, further limiting price competition. Automakers now face the twin challenges of rising tariffs and disappearing subsidies.

"It would have been difficult enough if all you had to deal with were new tariffs, but with new tariffs and the incentive going away, there are two impacts," said Stephanie Brinley of S&P Global Mobility.

Researchers warn that the policy shift could further reduce EV investment. "It's a big hit to the EV industry—there's no tiptoeing around it," said Katherine Yusko of the American Security Project. "The subsidies were initially a way to level the playing field, and now that they're gone, the US has a lot of ground to make up."

Still, Brinley urged caution before declaring the race lost, even as some argue EVs have hit an inflection point in adoption. "Is [electric] really the right thing?" she asked. "Saying that we're behind assumes that this is the only and best solution, and I think it's a little early to say that."

 

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