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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4 European nations to build North Sea wind farms

North Sea Offshore Wind Farms will deliver 150 GW by 2050 as EU partners scale renewable energy, offshore turbines, grid interconnectors, and REPowerEU goals to cut emissions, boost energy security, and reduce Russian fossil dependence.

 

Key Points

A joint EU initiative to build 150 GW of offshore wind by 2050, advancing REPowerEU, decarbonization, and energy security.

✅ Targets at least 150 GW of offshore wind by 2050

✅ Backed by Belgium, Netherlands, Germany, and Denmark

✅ Aligns with REPowerEU, grid integration, and emissions cuts

 

Four European Union countries plan to build North Sea wind farms capable of producing at least 150 gigawatts of energy by 2050 to help cut carbon emissions that cause climate change, with EU wind and solar surpassing gas last year, Danish media have reported.

Under the plan, wind turbines would be raised off the coasts of Belgium, the Netherlands, Germany and Denmark, where a recent green power record highlighted strong winds, daily Danish newspaper Jyllands-Posten said.

The project would mean a tenfold increase in the EU's current offshore wind capacity, underscoring how renewables are crowding out gas across Europe today.

“The North Sea can do a lot," Danish Prime Minister Frederiksen told the newspaper, adding the close cooperation between the four EU nations "must start now.”

European Commission President Ursula von der Leyen, German Chancellor Olaf Scholz, Dutch Prime Minister Mark Rutte and Belgian Prime Minister Alexander De Croo are scheduled to attend a North Sea Summit on Wednesday in Esbjerg, 260 kilometers (162 miles) west of Copenhagen.

In Brussels, the European Commission moved Wednesday to jump-start plans for the whole 27-nation EU to abandon Russian energy amid the Kremlin’s war in Ukraine. The commission proposed a nearly 300 billion-euro ($315 billion) package that includes more efficient use of fuels and a faster rollout of renewable power, even as stunted hydro and nuclear output may hobble recovery efforts.

The investment initiative by the EU's executive arm is meant to help the bloc start weaning themselves off Russian fossil fuels this year, even as Europe is losing nuclear power during the transition. The goal is to deprive Russia, the EU’s main supplier of oil, natural gas and coal, of tens of billions in revenue and strengthen EU climate policies.

“We are taking our ambition to yet another level to make sure that we become independent from Russian fossil fuels as quickly as possible,” von der Leyen said in Brussels when announcing the package, dubbed REPowerEU.

The EU has pledged to reduce carbon dioxide emissions by 55% compared with 1990 levels by 2030, and to get to net zero emissions by 2050, with a recent German renewables milestone underscoring the pace of change.

The European Commission has set an overall target of generating 300 gigawatts of offshore energy of by 2050, though grid expansion challenges in Germany highlight hurdles.

Along with climate change, the war in Ukraine has made EU nations eager to reduce their dependency on Russian natural gas and oil. In 2021, the EU imported roughly 40% of its gas and 25% of its oil from Russia.

At a March 11 summit, EU leaders agreed in principle to phase out Russian gas, oil and coal imports by 2027.

 

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Scores more wind turbines proposed for Long Island’s South Shore

New York Offshore Wind Expansion adds Equinor's Empire Wind 2 and Beacon Wind, boosting megawatts, turbines, and grid connections for Long Island and Queens, with jobs, assembly at South Brooklyn Marine Terminal, and clean energy.

 

Key Points

A statewide initiative proposing new Equinor and partner projects to scale offshore wind capacity, jobs, and grid links.

✅ Adds 2,490 MW via Empire Wind 2 and Beacon Wind

✅ Connects to Nassau County and Queens grids for reliability

✅ Creates 3,000+ NY jobs with South Brooklyn Marine Terminal work

 

Scores more 600-foot tall wind turbines would be built off Jones Beach under a new proposal.

Norwegian energy conglomerate Equinor has bid to create another 2,500 megawatts of offshore wind power for New York state and Long Island, where offshore wind sites are being evaluated, with two projects. One, which would connect to the local electric grid in Nassau County, would more than double the number of turbines off Long Island to some 200. A second would be built around 50 miles from Montauk Point and connect to the state grid in Queens. The plan would also include conducting assembly work in Brooklyn.

In disclosures Tuesday in response to a state request for proposals, Equinor said it would bolster its already state-awarded, 819-megawatt Empire Wind project off Long Island’s South Shore with another called Empire Wind 2 that will add 1,260 megawatts. Turbines of at least 10 megawatts each would mean that the prior project’s 80 or so turbines could be joined by another 120. Equinor’s federally approved lease area off Long Island encompasses some 80,000 acres, starting 15 miles due south of Long Beach and extending east and south.

Equinor on Tuesday also submitted plans to offer a second project called Beacon Wind that would be built 50 miles from Montauk Point, off the Massachusetts South Coast area. It would be 1,230 megawatts and connect through Long Island Sound to Queens.

Equinor said its latest energy projects would generate more than 3,000 New York jobs, including use of the South Brooklyn Marine Terminal for “construction activities” and an operations and maintenance base.

The new proposals came in response to a New York State Energy Research and Development Authority bid request for renewable projects in the state. In a statement, Siri Espedal Kindem, president of Equinor Wind U.S., said the company’s plans would include “significant new benefits for New York – from workforce training, economic development, and community benefits – alongside a tremendous amount of homegrown, renewable energy.”

Meanwhile, Denmark-based Orsted, working with New England power company Eversource, has also submitted plans for a new offshore wind project called Sunrise Wind 2, a proposal that includes “multiple bids” that would create “hundreds of new jobs, and infrastructure investment,” according to a company statement. Con Edison Transmission will also work to develop transmission facilities for that project, the companies said.

Orsted and Eversource already have contracts to develop a 130-megawatt wind farm for LIPA to serve the South Fork, and an 880-megawatt wind farm for the state. All of its hundreds of turbines would be based in a lease area off the coast of Massachusetts and Rhode Island, where Vineyard Wind has progressed as a key project.

“Sunrise Wind 2 will create good-paying jobs for New York, support economic growth, and further reduce emissions while delivering affordable clean energy to Long Island and the rest of New York,” Joe Nolan, executive vice president for Eversource, said in a statement.

 

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What the U.S. can learn from the U.K. about wind power

U.S. Offshore Wind Power Strategy leverages UK offshore wind lessons, contract auctions, and supply chains to scale renewable energy, build wind farms, cut emissions, create jobs, and modernize the grid to meet 2030 climate goals.

 

Key Points

U.S. plan to scale offshore wind via UK-style contracts, turbines, and supply chains to meet 2030 clean energy goals

✅ Contract-for-difference price guarantees de-risk projects

✅ Scale turbines and ports to cut LCOE and boost capacity

✅ Build coastal grids, transmission, and workforce by 2030

 

As President Joe Biden’s administration puts its muscle behind wind power with plans to develop large-scale wind farms along the entire United States coastline, the administration can look at how the windiest nation in Europe is transforming its energy grid for an example of how to proceed.

In the search for renewable sources of energy, the United Kingdom has embraced wind power. In 2020, the country generated as much as 24 percent of its electricity from wind power across the grid — enough to supply 18.5 million homes, according to government statistics. 

With usually reliable winds, the U.K. currently has the highest number of offshore turbines installed in the world, with China at a close second.

Experts and industry leaders say it offers valuable lessons on creating a viable market for wind power at the ambitious scale the Biden administration hopes to meet in order to confront climate change and help transition the U.S. economy to renewable energy.

“The U.S. is going to benefit hugely from the early investment that European governments have put into offshore wind,” said Oliver Metcalfe, a wind power analyst at BloombergNEF in London, an independent research group.

Big American plans
On Oct. 13, the White House announced ambitious offshore wind plans to lease federal waters off of the East and West Coasts and Gulf of Mexico to develop commercial wind farms.

The move is part of Biden’s goal to have 30,000 megawatts of offshore wind power produced in the United States by 2030, with projects such as New York's record-setting approval highlighting the momentum. The White House says that would generate enough electricity to power more than 10 million homes and in the process create 77,000 jobs. 

But there is a chasm between where the U.S. is now and where it wants to be within the next decade when it comes to offshore wind power.

“We’re the first generation to understand the science and implications of climate change and we’re the last generation to be able to do something about it.”

The U.S. is not new to wind power; onshore wind in states such as Texas, Oklahoma and Iowa supplied 8.2 percent of the country’s total electricity generation in 2020, according to the U.S. Department of Energy. 

But despite its long coastlines, offshore wind has been a largely untapped resource in the U.S. With a population of about 332 million people, the U.S. currently has just two operational offshore wind farms — off Rhode Island and Virginia — with the capacity to produce 42 megawatts of electricity between them, far from the 1 gigawatt on-grid milestone many are watching. 

In contrast, the U.K., with a population of 67 million people, has 2,297 offshore wind turbines with the capacity to produce 10,415 megawatts of electricity.

Power station or a park?
Just outside of central Glasgow, the host city for the U.N. climate change conference known as COP26, the fruits of years of effort to move away from fossil fuels can be seen and heard

International financiers, including the World Bank are helping developing countries scale wind projects to meet climate goals.

Whitelee Windfarm, the U.K.’s largest onshore wind farm, spreads across 30 square miles on the Eaglesham Moor and includes more than 80 miles of trails for walking, cycling and horseback riding.

With its 539 megawatt capacity, it generates enough electricity for 350,000 homes — more than half the population of Glasgow. 

On a recent gusty fall day, Ian and Fiona Gardner, both 71, were walking their dogs among the wind farm’s 360-foot-tall turbines  

“This is a major contribution to Scotland, to become independent from oil by 2035,” Ian Gardner, an accountant, said. 

Thanks to the rapid technological advances in turbine technology, this wind farm that was completed in 2009, is now practically old school. The latest crop of onshore turbines typically generate double the current capacity of Whitelee’s turbines.

“It took us 20 years to build 2 gigawatts of power. And we’re going to double that in five  years,” said McQuade, an economist. “We can do that because machines are big, efficient, cheap and the supply chain is there.” 

The biggest operational offshore wind farm in the world right now, Hornsea Project One, is about 75 miles off England’s Yorkshire coast in the North Sea.

Owned and operated by Orsted, a former Danish oil and gas giant, in partnership with Global Infrastructure Partners, its 174 turbines have the capacity to generate 1.2 gigawatts — enough to power over 1 million homes and roughly equivalent to a nuclear power plant. 

Benj Sykes, Vice President of U.K. Offshore Wind at Orsted, called Hornsea One a “game changer” in a recent phone interview, citing it as an example of how the industry has scaled up its output to compete with traditional power plants.

But massive projects like Hornsea One took decades to get up and running, as well as government help. According to Malte Jansen, a research associate at the Centre of Environmental Policy at Imperial College London, the British government helped facilitate a “paradigm shift” in renewable energy in 2013.

The electricity market reform policy set up a framework to incentivize investment in offshore wind farms by creating an auction system that guarantees electricity prices to developers in 15-year contracts, alongside new contract awards that add 10 GW to the U.K. grid. 

This means there is no upside in terms of market price fluctuation, but there is no downside either. The policy essentially “de-risked the investment,” Jansen said.

The state contracts allowed the industry to innovate and learn how to develop even larger and more efficient turbines with blades that stretch as long as 267 feet, about three-quarters the size of a U.S. football field. 

While this approach helped companies and investors, it will also have an unintended beneficiary — the U.S., Metcalfe from BloombergNEF said. 

Developers are “taking the lessons they’ve learned building projects in Europe, the cost reductions that they’ve achieved building projects in Europe and are now bringing those to the U.S. market,” he said.

 

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Wind is main source of UK electricity for first time

UK Renewable Energy Milestones: wind outpacing gas, record solar output, offshore wind growth, National Grid data, and a net-zero grid by 2035, despite planning reforms, connection queues, and grid capacity constraints.

 

Key Points

Key UK advances where wind beat gas, solar set records, and policies target a 2035 net-zero electricity grid.

✅ Wind generated one-third of electricity, outpacing gas

✅ Record solar output reported by National Grid in April

✅ Onshore wind easing via planning reforms; grid delays persist

 

In the first three months of this year a third of the country's electricity came from wind farms, with the UK leading the G20 for wind power according to research from Imperial College London has shown.

National Grid has also confirmed that April saw a record period of solar energy generation, and wind generation set new records earlier in the year.

By 2035 the UK aims for all of its electricity to have net zero emissions, though progress stalled in 2019 in some areas.

"There are still many hurdles to reaching a completely fossil fuel-free grid, but wind out-supplying gas for the first time, a sign of wind leading the power mix, is a genuine milestone event," said Iain Staffell, energy researcher at Imperial College and lead author of the report.

The research was commissioned by Drax Electrical Insights, which is funded by Drax energy company.

The majority of the UK's wind power has come from offshore wind farms, and wind generated more electricity than coal in 2016 marking an early shift. Installing new onshore wind turbines has effectively been banned since 2015 in England.

Under current planning rules, companies can only apply to build onshore wind turbines on land specifically identified for development in the land-use plans drawn up by local councils. Prime Minister Rishi Sunak agreed in December to relax these planning restrictions to speed up development.

Scientists say switching to renewable power is crucial to curb the impacts of climate change, with milestones like wind and solar topping nuclear underscoring the shift, which are already being felt, including in the UK, which last year recorded its hottest year since records began.

Solar and wind have seen significant growth in the UK. In the first quarter of 2023, 42% of the UK's electricity came from renewable energy, with 33% coming from fossil fuels like gas and record-low coal shares.

Some new solar and wind sites are waiting up to 10 to 15 years to be connected because of a lack of capacity in the electricity system.

And electricity only accounts for 18% of the UK's total power needs. There are many demands for energy which electricity is not meeting, such as heating our homes, manufacturing and transport.

Currently the majority of UK homes use gas for their heating - the government is seeking to move households away from gas boilers and on to heat pumps which use electricity.

 

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US: In 2021, Plug-Ins Traveled 19 Billion Miles On Electricity

US Plug-in EV Miles 2021 highlight BEV and PHEV growth, DOE and Argonne data, 19.1 billion electric miles, 6.1 TWh consumed, gasoline savings, rising market share, and battery capacity deployed across the US light-duty fleet.

 

Key Points

They represent 19.1 billion electric miles by US BEVs and PHEVs in 2021, consuming 6.1 TWh of electricity.

✅ 700 million gallons gasoline avoided in 2021

✅ $1.3 billion fuel cost savings estimated

✅ Cumulative 68 billion EV miles since 2010

 

Plug-in electric cars are gradually increasing their market share in the US (reaching about 4% in 2021), which starts to make an impact even as the U.S. EV market share saw a brief dip in Q1 2024.

The Department of Energy (DOE)’s Vehicle Technologies Office highlights in its latest weekly report that in 2021, plug-ins traveled some 19.1 billion miles (31 billion km) on electricity - all miles traveled in BEVs and the EV mode portion of miles traveled in PHEVs, underscoring grid impacts that could challenge state power grids as adoption grows.

This estimated distance of 19 billion miles is noticeably higher than in 2020 (nearly 13 billion miles), which indicates how quickly the electrification of driving progresses, with U.S. EV sales continuing to soar into 2024. BEVs noted a 57% year-over-year increase in EV miles, while PHEVs by 24% last year (mostly proportionally to sales increase).

According to Argonne National Laboratory's Assessment of Light-Duty Plug-in Electric Vehicles in the United States, 2010–2021, the cumulative distance covered by plug-in electric cars in the US (through December 2021) amounted to 68 billion miles (109 billion miles).

U.S. Department of Transportation, Federal Highway Administration, December 2021 Traffic Volume Trends, 2022.

The report estimates that over 2.1 million plug-in electric cars have been sold in the US through December 2021 (about 1.3 million all-electric and 0.8 million plug-in hybrids), equipped with a total of more than 110 GWh of batteries, even as EV sales remain behind gas cars in overall market share.

It's also estimated that 19.1 billion electric miles traveled in 2021 reduced the national gasoline consumption by 700 million gallons of gasoline or 0.54%.

On the other hand, plug-ins consumed some 6.1 terawatt-hours of electricity (6.1 TWh is 6,100 GWh), which sounds like almost 320 Wh/mile (200 Wh/km), aligning with projections that EVs could drive a rise in U.S. electricity demand over time.

The difference between the fuel cost and energy cost in 2021 is estimated at $1.3 billion, with Consumer Reports findings further supporting the total cost advantages.

Cumulatively, 68 billion electric miles since 2010 is worth about 2.5 billion gallons of gasoline. So, the cumulative savings already is several billion dollars.

Those are pretty amazing numbers and let's just imagine that electric cars are just starting to sell in high volume, a trend that mirrors global market growth seen over the past decade. Every year those numbers will be improving, thus tremendously changing the world that we know today.

 

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Wind power grows despite Covid-19

Global Wind Power Growth will hit record installations, buoying renewable energy, offshore wind, onshore capacity, and economic recovery, as GWEC forecasts resilient post-Covid markets led by China and the US with strong investment and jobs.

 

Key Points

Global Wind Power Growth is the forecast rise in capacity driving renewable energy, jobs, and lower emissions.

✅ 71.3 GW installed in 2020; only 6% below pre-Covid forecast

✅ 348 GW added by 2024; nearly 1,000 GW total capacity

✅ Offshore wind resilient; 6.5 GW in 2020, China-led

 

Wind power will continue to show record growth, as renewables set to shatter records over the next five years despite the impacts of the Covid-19 crisis, and will make a crucial contribution to economic recovery... According to the latest market outlook by GWEC Market Intelligence, 71.3GW of wind power capacity is expected to be installed in 2020, which is only a 6% reduction from pre-Covid forecasts. This is a significant increase from original predictions that expected wind power installations to be reduced by up to 20 per cent due to the pandemic, demonstrating the resilience of the wind power industry across the globe.

From 2020 to 2024, the cumulative global wind energy market will grow at a compound annual rate of 8.5% and installing 348GW of new capacity, bringing total global wind power capacity to nearly 1,000GW by the end of 2024, which is an increase of 54% for total wind power installations compared to 2019. While some project completion dates have been pushed into 2021 due to the pandemic, next year is expected to be a record year for the wind industry with 78GW of new wind capacity forecasted to be installed in 2021. Over 50% of the onshore wind capacity added between 2020 to 2024 will be installed in China and the US, where U.S. solar and wind growth is supported by favourable government plans, led by installation rushes to meet subsidy deadlines.

The offshore wind sector has been largely shielded from the impacts of the Covid-19 crisis, GWEC Market Intelligence has indeed increased its forecast for offshore wind by 5 per cent to 6.5 GW of new installations in 2020, another record year for the industry, as offshore wind's $1 trillion outlook comes into focus, led by the installation rush in China. Up until 2024, over 48GW of new offshore wind capacity is expected to be installed, with another 157GW forecasted to be installed from 2025 to 2030 across key markets such as offshore wind in the UK and Asia.

“While the Covid-19 crisis has impacted every industry across the world, wind power has continued to grow and thrive. This is no surprise given the cost competitiveness of wind energy and the need to rapidly reproduce carbon emissions. Fossil fuel industries face market fluctuations and require bailouts to stay afloat, while wind turbines across the world have continued to spin and provide affordable, clean energy to citizens everywhere," says Ben Backwell, CEO of GWEC.

“Thanks to the localised nature of wind power supply chains and project construction, the sector has continued to generate billions in local investment and thousands of jobs to support economic recovery. However, in order to tap into the full potential of wind power to drive a green recovery, governments must ensure that energy markets and policies allow a continued ramp up in investment in wind and other renewables, and avoid unintended effects such as the Solar ITC extension impact on the US wind market, while disincentivising investment in expensive and declining fossil fuel industries," he says.

Biggest markets

China and the US will continue to be the two main markets driving growth over the next few years, with U.S. wind power surges underscoring the momentum. "We have increased or maintained our forecasts for onshore wind in regions such as Latin America, North America, Africa, and the Middle East over the next five years, with only minor decreases in Asia Pacific and Europe. However, these reductions are not necessarily a direct impact of Covid-19, but also a symptom of pre-existing regulatory issues, such as protracted permitting procedures, which are slowing down installations. In particular, offshore wind has demonstrated its resilience by exceeding our pre-pandemic forecasts for 2020, and will be an important source of growth in the decade ahead," Feng Zhao, strategy director at GWEC.

“We have seen a series of carbon neutrality commitments by major economies such as China, Japan and South Korea over the past few weeks. Since wind power is a key technology for decarbonisation, building on the evolution in 2016, these targets will increase the forecast for wind power over the next few decades. However, the right enabling regulatory and policy frameworks must be in place to accelerate renewable energy growth to meet these targets. China, the world’s largest wind power market and largest carbon emitter, has pledged to go carbon-neutral by 2060. To have a chance at achieving this target, we need to be installing 50GW of wind power per year in China from now until 2025, and then 60GW from 2026 onwards. It is crucial that governments firm up carbon neutrality targets with tangible actions to drive wind and other renewable energy growth at the levels needed to achieve these aims”, he says.

 

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