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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Canada is a solar power laggard, this expert says

Canada Distributed Energy faces disruption as solar, smart grids, microgrids, and storage scale utility-scale renewables, challenging centralized utilities and accelerating decarbonization, grid modernization, and distributed generation across provinces like Alberta.

 

Key Points

Canada Distributed Energy shifts from centralized grids to local solar, wind, and storage for reliable low-carbon power.

✅ Morgan Solar and Enbridge launch Alberta Solar One, 13.7 MW.

✅ Optical films boost panel efficiency, lowering cost per watt.

✅ Strong utilities slow adoption of microgrids and smart grids.

 

By Nick Waddell

Disruption is coming to electricity generation but Canada has become a laggard when it comes to not just adoption of alternative energy sources but in moving to a more distributed model of electricity generation. That’s according to Mike Andrade, CEO of Morgan Solar, whose new solar project in conjunction with Enbridge has just come online in Alberta, a province known as a powerhouse for both green and fossil energy in Canada.

“There’s a lot of inertia to Canada’s electrical system and I don’t think that bodes well,” said Andrade, who spoke on BNN Bloomberg on Thursday. 

“Canada is one of the poorest places for uptake of solar, as NEB data on solar demand indicates,” Andrade said, “I believe a lot of it has to do with the fact that we have strong provincial utilities that have their mandates and their chosen technologies.”

Alberta Solar One, a 13.7 MW power facility near Lethbridge, Alberta, had its unveiling this week amid red-hot solar growth in Alberta that shows no sign of slowing. It’s a 36,500-panel farm constructed by Enbridge in a quick six-month turnaround as part of the power company’s pledge to become a carbon-free generator by 2050. Along with solar, Enbridge has made big investments in offshore and onshore wind farms in the United States, while also producing so-called green hydrogen at an Ontario plant.

Private company Morgan Solar considers the Alberta Solar One project as the first utility-scale validation of its technology, which uses optical films to redirect light onto photovoltaic cells to further power production. 

“We use an advanced modelling system and a variety of tools to design very simple optical systems that can be easily inserted into a panel,” Andrade said. “They cost less and bring down the cost per watt. It captures light that would otherwise miss the cells and so you get more power per cell area than any other commercial technology at this point.”

Like renewables in general, solar energy has been thrust into the spotlight as governments worldwide aim to make good on their climate change and emissions pledges, with analyses showing zero-emissions electricity by 2035 is possible in Canada, and convert power generation from fossil fuels to alternative sources. 

The market has paid attention, too, driving up values on renewable energy stocks across the board, including solar stocks, as provinces like Alberta explore selling renewable energy into broader markets. Last year, the Invesco Solar ETF, which tracks the MAC Global Solar Energy Index, soared 234 per cent, while Canadian companies with solar assets like Algonquin Power and Northland Power have been winners over the past few years.

Canadian cleantech companies involved in the solar power sector have also fared well, with names like UGE International (UGE International Stock Quote, Chart, News, Analyst. Financials TSXV:UGE), Aurora Solar and 5N Plus (5N Plus Stock Quote, Chart, News, Analysts, Financials TSX:VNP) having attracted investor attention of late.

Currently, part of the push in alternative energy involves the move from centralized to a more distributed picture of power generation, where solar panels, wind turbines and small modular nuclear reactors can operate close to or within sources of consumption like cities.

But Andrade says Canada has a lot of catching up to do on that front, especially as its current system seems devoted to maintaining the precedence of large, centralized power production — along with the utility companies that generate it.

“Canada is going to be left with this big, old fashioned hub and spoke model, and that’s increasingly going to be out-competed by a distributed grid, call them smart grids or micro grids,” Andrade said.

“That’s the future that solar is going to drive along with storage, and I personally don’t think Canada is prepared for it, not because we can’t do it but because regulatory and incumbency is holding us back from doing that,” he said.

“We pay our utilities, saying, ‘You invest capital and we’ll give you a fixed return on capital.’ Well, guess what? You’re going to get large, centralized capital projects which are going to get big central generation hub and spoke distribution,” Andrade said.

Ahead of the Canadian federal government’s tabling next week of its first budget in two years, many in the energy sector will be taking notes on the Liberal government’s investments in the so-called green recovery after the economic downturn, with renewable energy proponents hoping for further support, noting Alberta’s renewable energy surge could power thousands of jobs, to shift Canada’s resource sector away from fossil fuels.

By comparison, President Biden in the US recently unveiled his $2-billion infrastructure plan which put precedence on greening the country’s power grid, encouraging the adoption of electric vehicles and supporting renewable resource development, and Canadian studies suggest 2035 zero-emission power is practical and profitable as well across the national grid. 

On disruption in power generation, Andrade said there are parallels to be drawn from information technology, which has historically made a point of discarded outdated models along the way.

“I was at IBM, and they had the mainframe business and that got blown up. I also worked with Nortel and Celestica and they got blown up —and it wasn’t due to having better central hub and spoke systems. They got beat up by this distributed system,” Andrade said. 

“The same thing is going to happen here and the disruption is coming in electricity generation as well,” he said.

 

About The Author - Nick Waddell

Cantech Letter founder and editor Nick Waddell has lived in five Canadian provinces and is proud of his country's often overlooked contributions to the world of science and technology. Waddell takes a regular shift on the Canadian media circuit, making appearances on CTV, CBC and BNN, and contributing to publications such as Canadian Business and Business Insider.

 

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Feds announce $500M contract with Edmonton company for green electricity

Canada Renewable Energy Partnerships advance wind power and clean electricity in Alberta and Saskatchewan, cutting emissions and supporting net-zero goals through Capital Power and SaskPower agreements with Indigenous participation and 25-year supply contracts.

 

Key Points

Government-backed deals with Capital Power and SaskPower to deliver clean electricity and reduce emissions.

✅ 25-year renewable supply for federal facilities

✅ New Halkirk 2 Wind project in Alberta

✅ Emissions cuts with Indigenous participation

 

The Government of Canada has partnered with two major energy providers in Western Canada (Prairie provinces) on renewable energy projects.

Tourism Minister Randy Boissonnault appeared in Edmonton on Friday to announce a new Alberta wind-generation facility in partnership with Capital Power.

It's one of two new energy partnerships in Western Canada as part of the 2030 emissions reduction plan by Public Services and Procurement Canada.

On Jan. 1, the federal government awarded a contract worth up to $500 million to Capital Power to provide all federal facilities in Alberta with renewable electricity as part of Alberta's renewable energy surge for 25 years.

"We're proud to partner with the government of Canada to help them reach their 100 per cent clean electricity by 2025 goal," said Jason Comandante, Capital Power vice president of commercial services.

The agreement also includes opportunities for Indigenous participation, including facility development partnerships and employment and training opportunities.

"At Capital Power, we are committed to net-zero by 2045, and are proud to take action against climate change. Collaborative agreements like this help support our net-zero goals, provide us opportunities to meaningfully engage Indigenous communities, and help decarbonize Alberta's power grid," Comandante said.

Capital Power will provide around 250,000 megawatt-hours of electricity each year through existing renewable energy credits while the new Capital Power Halkirk 2 Wind facility is being developed.

Located near Paintearth, Alta., the proposed wind farm will have up to 35 turbines and generate enough power for the average yearly electricity needs of more than 70,000 Alberta homes.

The project is currently awaiting regulatory approval, within Alberta's energy landscape, with construction projected to begin this summer. When complete, it will supply 49 per cent of its output to the federal government.

"Through the agreement, the federal government is supporting the ongoing development of renewable energy infrastructure development within the province," Boissonnault said.

The new partnership will join another in Saskatchewan and complement Alberta solar facilities that have been contracted at lower cost than natural gas.

In 2022, the federal government signed an agreement with SaskPower to supply clean electricity to the approximately 600 federal facilities in Saskatchewan. That wind project is expected to come online by 2024.

Boissonnault said the two initiatives combined will reduce carbon dioxide emissions in Alberta and Saskatchewan by about 166 kilotonnes.

"That is the equivalent of the emissions from more than 50,000 cars driven for one year. So, if you think about that, that's a great reduction right here in Alberta and Saskatchewan," he said.

"These are concrete steps to ensuring that Canada remains a leader of renewable energy on the global stage and grid modernization projects to help the fight against climate change." 

 

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Wind power is Competitive on Reliability and Resilience Says AWEA CEO

Wind farm reliability services now compete in wholesale markets, as FERC and NERC endorse market-based solutions that reward performance, bolster grid resilience, and compensate ancillary services like frequency regulation, voltage support, and spinning reserve.

 

Key Points

Grid support from wind plants, including frequency, voltage, ramping, and inertial response via advanced controls.

✅ Enabled by advanced controls and inverter-based technology

✅ Compete in market-based mechanisms for ancillary services

✅ Support frequency, voltage, reserves; enhance grid resilience

 

 

American Wind Energy Association CEO Tom Kiernan has explained to a congressional testimony that wind farms can now compete, as renewables approach market majority, to provide essential electric reliability services. 

Mr Kiernan appeared before the US Congress House Energy and Commerce Committee where he said that, thanks to technological advances, wind farms are now competitive with other energy technologies with regard to reliability and resiliency. He added that grid reliability and resilience are goals that everyone can support and that efforts underway at the Federal Energy Regulatory Commission (FERC) and by market operators are rightly focused on market-based solutions to better compensate generators for providing those essential services.

AWEA strongly agreed with other witnesses on the panel who endorsed market-based solutions in their submitted testimony, including the American Petroleum Institute, Solar Energy Industries Association, Energy Storage Association, Natural Resources Defence Council, National Hydropower Association, and others. However, AWEA is concerned that the Department of Energy’s recent proposal to provide payments to specific resources based on arbitrary requirements is anti-competitive, and threatens to undermine electricity markets that are bolstering reliability and saving consumers billions of dollars per year.

“We support the objective of maintaining a reliable and resilient grid which is best achieved through free and open markets, with a focus on needed reliability services – not sources – and a programme to promote transmission infrastructure.”

Kiernan outlined several major policy recommendations in his testimony, including reliance on competitive markets that reward performance to ensure affordable and reliable electricity, a focus on reliability needs rather than generation sources and the promotion of transmission infrastructure investment to improve resilience and allow consumers greater access to all low-cost forms of energy.

The CEO of the North American Electric Reliability Corporation (NERC) has recently testified that the state of reliability in North America remains strong and the trend line shows continuing improvement year over year. Technological advances and innovation by over 100,000 US wind workers enable wind farms today to provide the grid reliability services traditionally provided by conventional power plants. NERC’s CEO emphasised in its testimony at last month’s hearing that “variable resources significantly diversify the generation portfolio and can contribute to reliability and resilience in important ways.”

 

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Alberta Leads Canada’s Renewable Surge

Alberta Leads Canada’s Renewable Surge showcases how the province is transforming its power grid with wind, solar, and hydrogen energy projects that reduce carbon emissions, create sustainable jobs, and drive Canada’s clean electricity future.

 

Key Points: Alberta Leads Canada’s Renewable Surge

It is a national clean energy initiative showcasing Alberta’s leadership in renewable electricity generation, grid modernization, and sustainable economic growth.

✅ Expands solar, wind, and hydrogen projects across Alberta

✅ Reduces emissions while strengthening grid reliability

✅ Creates thousands of clean energy jobs and investments

Alberta is rapidly emerging as a national leader in clean electricity, driving Canada’s transition to a low-carbon energy future. A federal overview highlights how the province has become the powerhouse behind the country’s renewable energy growth across the Prairies, phasing out coal ahead of schedule and attracting billions in clean-energy investment.

In 2023, Alberta accounted for an astonishing 92 percent of Canada’s increase in renewable electricity generation, reflecting a renewable energy surge across the province. Solar and wind developments have expanded dramatically, as new lower-cost solar contracts are signed, reducing the province’s reliance on natural gas and cutting emissions from the power sector. Alberta’s vast land area and strong wind and solar resources have made it an ideal location for large-scale renewable projects that are transforming its energy landscape.

Federal programs are helping fuel this momentum. Through the Smart Renewables and Electrification Pathways program, 49 Alberta projects have already received over $660 million in funding, with an additional $152 million announced in the 2024 federal budget. Flagship developments include the Forty Mile Wind Farm and the Big Sky Solar Power Project, each backed by $25 million in federal support. These investments are creating jobs, strengthening grid reliability, and positioning Alberta at the forefront of Canada’s clean energy transition.

Although fossil fuels still dominate Alberta’s electricity mix, a major change is underway. In 2022, coal and natural gas accounted for 81 percent of electricity generation, while renewables and other sources contributed 18 percent, and the province’s hydroelectric capacity remained comparatively small. However, Alberta has successfully phased out coal generation ahead of the federal deadline, marking a milestone achievement in the province’s decarbonization journey.

Alberta’s renewable expansion features some of the country’s most significant projects. The Travers Solar Project in Vulcan County generates up to 465 megawatts — enough to power about 150,000 homes. Indigenous-led solar initiatives are also expanding, underscoring the province’s solar power growth, supported by $160 million in federal funding that has already created more than 1,500 jobs. On the wind side, the 494-megawatt Buffalo Plains Wind Farm, Canada’s largest onshore installation, began operating in 2024, followed by the 190-megawatt Paintearth Wind facility, which signed a 15-year power purchase agreement with Microsoft.

Beyond wind and solar, Alberta is exploring new technologies to maintain a stable, low-carbon grid while addressing solar expansion challenges related to grid integration. The province is collaborating with Saskatchewan on the development of small modular reactors (SMRs) to provide reliable baseload power and support the long-term shift toward net-zero electricity by 2050. Projects integrating carbon capture and storage are also moving forward, such as the proposed Moraine Power Generating Project — a 465-megawatt natural gas plant that is expected to create more than 700 jobs during construction.

The economic potential of Alberta’s clean energy transformation is substantial. Clean Energy Canada estimates that between 2025 and 2050, the province could gain more than 400,000 new jobs in the clean energy sector — triple the number currently employed in the upstream oil and gas industry. These positions will span renewable generation, hydrogen production, grid modernization, and energy storage.

With strong federal backing, aggressive private investment, and rapid deployment of renewable energy, Alberta is redefining its energy identity. Once known for its fossil fuel resources, the province is now positioning itself as a powerhouse for both green energy and fossil fuels in Canada, demonstrating that economic growth and environmental responsibility can go hand in hand.

 

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American wind power congratulates President-elect Biden on his victory.

American Wind Power Statement on Biden highlights collaboration on renewable energy policy, clean energy jobs, carbon-free power, climate action, and a modern grid to grow the economy while keeping electricity costs low.

 

Key Points

AWEA commits to work with Biden on renewable policy, clean energy jobs, and a carbon-free U.S. grid.

✅ AWEA cites over 120,000 U.S. wind jobs ready to scale

✅ Supports 100% carbon-free power target by mid-century

✅ Aims to keep electricity costs low with renewable policy

 

American wind power congratulates President-elect Biden on his victory. "We look forward to collaborating with his administration and Congress, after pledges to scrap offshore wind in recent years, as we work together to shape a cleaner and more prosperous energy future for America, where wind and solar surpass coal in generation across the country.

The President-elect and his team have laid out an ambitious, comprehensive approach to energy policy that recognizes renewable energy's ability to grow America's economy and create a cleaner environment, as market majority for clean energy becomes a realistic prospect, while keeping electricity costs low and combating the threat of climate change as wind power surges across many regions.

The U.S. wind sector and its growing workforce of over 120,000 Americans stand ready to help put that plan into action and support the Biden administration in delivering on the immense promise of renewable energy to add well-paying jobs to the U.S. economy, with quarter-million wind jobs forecast in coming years, and reach the President-elect's 100% target for a carbon-free America by the middle of this century, alongside a 100% clean electricity by 2035 goal that charts the near-term path." - Tom Kiernan, CEO of the American Wind Energy Association.

 

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World Bank helps developing countries wind spurt

World Bank Offshore Wind Investment drives renewables and clean energy in developing countries, funding floating turbines and shallow-water foundations to replace fossil fuels, expand grids, and scale climate finance across Latin America, Africa, and Asia.

 

Key Points

A World Bank program funding offshore wind to speed clean power, cut fossil fuels, and expand grids in emerging markets.

✅ US$80bn to 565 onshore wind projects since 1995

✅ Pilot funds offshore wind in Asia, Africa, Latin America

✅ Floating turbines and shallow-water foundations enable deep resources

 

Europe and the United States now accept onshore wind power as the cheapest way to generate electricity, and U.S. lessons from the U.K. are informing policy discussions. But this novel technology still needs subsidising before some developing countries will embrace it. Enter the World Bank.

A total of US$80 billion in subsidies from the Bank has gone over 25 years to 565 developing world onshore wind projects, to persuade governments to invest in renewables rather than rely on fossil fuels.

Central and Latin American countries have received the lions share of this investment, but the Asia Pacific region and Eastern Europe have also seen dozens of Bank-funded developments. Now the fastest-growing market is in Africa and the Middle East, where West African hydropower support can complement variable wind resources.

But while continuing to campaign for more onshore wind farms, the World Bank in 2019 started encouraging target countries to embrace offshore wind as well. This uses two approaches: turbines in shallow water, which are fixed to the seabed, and also a newer technology, involving floating turbines anchored by cables at greater depth.

The extraordinary potential for offshore wind, which is being commercially developed very fast in Europe, including the UK's offshore expansion, China and the U.S. offshore wind sector today as well, is now seen by the Bank as important for countries like Vietnam which could harness enough offshore wind power to provide all its electricity needs.

Other countries it has identified with enormous potential for offshore wind include Brazil, Indonesia, India, the Philippines, South Africa and Sri Lanka, all of them countries that need to keep building more power stations to connect every citizen to the national grid.

The Bank began investing in wind power in 1995, with its spending reaching billions of dollars annually in 2011. The biggest single recipient has been Brazil, receiving US$24.2 bn up to the end of 2018, 30 per cent of the total the Bank has invested worldwide.

Many private companies have partnered with the Bank to build the wind farms. The biggest single beneficiary is Enel, the Italian energy giant, which has received US$6.1 bn to complete projects in Brazil, Mexico, South Africa, Romania, Morocco, Bulgaria, Peru, and Russia.

Among the countries now benefitting from the Banks continuing onshore wind programme are Egypt, Morocco, Senegal, Jordan, Vietnam, Thailand, Indonesia and the Philippines.

Offshore wind now costs less than nuclear power, and global costs have fallen enough to compete in most countries with fossil fuels. Currently the fastest-growing industry in the world, it continued to grow despite Covid-19 across most markets.

Persistent coal demand

Particularly in Asia, some countries are continuing to burn large quantities of coal and are considering investing in yet more fossil fuel generation unless they can be persuaded that renewables are a better option, with an offshore wind $1 trillion outlook underscoring the scale.

Last year the World Bank began a pilot scheme to explore funding investment in offshore wind in these countries. Launching the scheme Riccardo Puliti, a senior director at the Bank, said: Offshore wind is a clean, reliable and secure source of energy with massive potential to transform the energy mix in countries that have great wind resources.

We have seen it work in Europe we can now make use of global experience to scale up offshore wind projects in emerging markets.

Using data from the Global Wind Atlas, the Bank calculated that developing countries with shallow waters like India, Turkey and Sri Lanka had huge potential with fixed turbines, while others the Philippines and South Africa, for example would need floating foundations to reach greater depths, up to 1,000 metres.

For countries like Vietnam, with a mix of shallow and deep water, wind power could solve their entire electricity needs. In theory offshore wind power could produce ten times the amount of electricity that the country currently gets from all its current power stations, the Bank says.

 

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