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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N.W.T. will encourage more residents to drive electric vehicles

Northwest Territories EV Charging Corridor aims to link the Alberta boundary to Yellowknife with Level 3 fast chargers and Level 2 stations, boosting electric vehicle adoption in cold climates, cutting GHG emissions, supporting zero-emission targets.

 

Key Points

A planned corridor of Level 3 and Level 2 chargers linking Alberta and Yellowknife to boost EV uptake and cut GHGs.

✅ Level 3 fast charger funded for Behchoko by spring 2024.

✅ Up to 72 Level 2 chargers funded across N.W.T. communities.

✅ Supports Canada ZEV targets and reduces fuel use and CO2e.

 

Electric vehicles are a rare sight in Canada's North, with challenges such as frigid winter temperatures and limited infrastructure across remote regions.

The Northwest Territories is hoping to change that.

The territorial government plans to develop a vehicle-charging corridor between the Alberta boundary and Yellowknife to encourage more residents to buy electric vehicles to reduce their carbon footprint.

"There will soon be a time in which not having electric charging stations along the highway will be equivalent to not having gas stations," said Robert Sexton, director of energy with the territory’s Department of Infrastructure.

"Even though it does seem right now that there’s limited uptake of electric vehicles and some of the barriers seem sort of insurmountable, we have to plan to start doing this, because in five years' time, it’ll be too late."

The federal government has committed to a mandatory 100 per cent zero-emission vehicle sales target by 2035 for all new light-duty vehicles, though in Manitoba reaching EV targets is not smooth so progress may vary. It has set interim targets for at least 20 per cent of sales by 2026 and 60 per cent by 2030.

A study commissioned by the N.W.T. government forecasts electric vehicles could account for 2.9 to 11.3 per cent of all annual car and small truck sales in the territory in 2030.

The study estimates the planned charging corridor, alongside electric vehicle purchasing incentives, could reduce greenhouse gas emissions by between 260 and 1,016 tonnes of carbon dioxide equivalent in that year.

Sexton said it will likely take a few years before the charging corridor is complete. As a start, the territory recently awarded up to $480,000 to the Northwest Territories Power Corporation to install a Level 3 electric vehicle charger in Behchoko.

The N.W.T. government projects the charging station will reduce gasoline use by 61,000 litres and decrease carbon dioxide equivalent by up to 140 tonnes per year. It is scheduled to be complete by the spring of 2024.

The federal government earlier this month announced $414,000, along with $56,000 in territorial funding, to install up to 72 primarily Level 2 electric vehicle charges in public places, streets, multi-unit residential buildings, workplaces, and facilities with light-duty vehicle fleets in the N.W.T. by March 2024, while in New Brunswick new fast-charging stations are planned on the Trans-Canada.

In Yukon, the territory has pledged to develop electric vehicle infrastructure in all road-accessible communities by 2027. It has already installed 12 electric vehicle chargers with seven more planned, and in N.L. a fast-charging network signals early progress as well.

Just a few people in the N.W.T. currently own electric vehicles, and in Atlantic Canada EV adoption lags as well.

Patricia and Ken Wray in Hay River have owned a Tesla Model 3 for three years. Comparing added electricity costs with savings on gasoline, Patricia estimates they spend 60 per cent less to keep the Tesla running compared to a gas-powered vehicle.

“I don’t mind driving past the gas station,” she said.

Despite some initial hesitation about how the car would perform in the winter, Wray said she hasn’t had any issues with her Tesla when it’s -40 C, although it does take longer to charge. She added it “really hugs the road” in snowy and icy conditions.

“People in the North need to understand these cars are marvellous in the winter,” she said.

Wray said while she and her husband drive their Tesla regularly, it’s not feasible to drive long distances across the territory. As the number of electric vehicle charge stations increases across the N.W.T., however, that could change.

“I’m just very, very happy to hear that charging infrastructure is now starting to be put in place," she said.

Andrew Robinson with the YK Care Share Co-op is more skeptical about the potential success of a long-distance charging corridor. He said while government support for electric vehicles is positive, he believes there's a more immediate need to focus on uptake within N.W.T. communities. He pointed to local taxi services as an example.

"It’s a long stretch," he said of the drive from Alberta, where EVs are a hot topic, to Yellowknife. "It’s 17 hours of hardcore driving and when you throw in having to recharge, anything that makes that longer, people are not going to be really into that.”

The car sharing service, which has a 2016 Chevy Spark dubbed “Sparky,” states on its website that a Level 2 charger can usually recharge a vehicle within six to eight hours while a Level 3 charger takes approximately half an hour, as faster charging options roll out in B.C. and beyond.

 

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The government's 2035 electric vehicle mandate is delusional

Canada 2035 Zero-Emission Vehicle Mandate sets EV sales targets, raising concerns over affordability, battery materials like lithium and copper, charging infrastructure, grid capacity, renewable energy mix, and policy impacts across provinces.

 

Key Points

Mandate makes all new light-duty vehicles zero-emission by 2035, affecting costs, charging, and electric grid planning.

✅ 100% ZEV sales target for cars, SUVs, light trucks by 2035

✅ Cost pressures from lithium, copper, nickel; EVs remain pricey

✅ Grid, charging build-out needed; impacts vary by provincial mix

 

Whether or not you want one, can afford one or think they will do essentially nothing to stop global warming, electric vehicles are coming to Canada en masse. This week, the Canadian government set 2035 as the “mandatory target” for the sale of zero-emission SUVs and light-duty trucks as part of ambitious EV goals announced by Ottawa.

That means the sale of gasoline and diesel cars has to stop by then. Transport Minister Omar Alghabra called the target “a must.” The previous target was 2040.

It is a highly aspirational plan that verges on the delusional according to skeptics of an EV revolution who argue its scale is overstated, even if it earns Canada – a perennial laggard on the emission-reduction front – a few points at climate conferences. Herewith, a few reasons why the plan may be unworkable, unfair or less green than advertised.

Liberals say by 2035 all new cars, light-duty trucks sold in Canada will be electric, as Ottawa develops EV sales regulations to implement the mandate.

Parkland to roll out electric-vehicle charging network in B.C. and Alberta

Sticker shock: There is a reason why EVs remain niche products in almost every market in the world (the notable exception is in wealthy Norway): They are bloody expensive and often in short supply in many markets. Unless EV prices drop dramatically in the next decade, Ottawa’s announcement will price the poor out of the car market. Transportation costs are a big issue with the unrich. The 2018 gilets jaunes mass protests in France were triggered by rising fuel costs.

While some EVs are getting cheaper, even the least expensive ones are about double the price of a comparable product with an internal combustion engine. Most EVs are luxury items. The market leader in Canada and the United States is Tesla. In Canada the cheapest Tesla, the Model 3 (“standard range plus” version), costs $49,000 before adding options and subtracting any government purchase incentives. A high-end Model S can set you back $170,000.

To be sure, prices will come down as production volumes increase. But the price decline might be slow for the simple reason that the cost of all the materials needed to make an EV – copper, cobalt, lithium, nickel among them – is climbing sharply and may keep climbing as production increases, straining supply lines.

Lithium prices have doubled since November. Copper has almost doubled in the past year. An EV contains five times more copper than a regular car. Glencore, one of the biggest mining companies, estimated that copper production needs to increase by a million tonnes a year until 2050 to meet the rising demand for EVs and wind turbines, a daunting task given the dearth of new mining projects.

Will EVs be as cheap as gas cars in a decade or so? Impossible to say, but given the recent price trends for raw materials, probably not.

Not so green: There is no such thing as a zero-emission vehicle, even if that’s the label used by governments to describe battery-powered cars. So think twice if you are buying an EV purely to paint yourself green, as research finds they are not a silver bullet for climate change.

In regions in Canada and elsewhere in the world that produce a lot of electricity from fossil-fuel plants, driving an EV merely shifts the output of greenhouse gases and pollutants from the vehicle itself to the generating plant (according to recent estimates, about 18% of Canada’s electricity comes from coal, natural gas and oil; in the United States, 60 per cent).

An EV might make sense in Quebec, where almost all the electricity comes from renewable sources and policymakers push EV dominance across the market. An EV makes little sense in Saskatchewan, where only 17 per cent comes from renewables – the rest from fossil fuels. In Alberta, only 8 per cent comes from renewables.

The EV supply chain is also energy-intensive. And speaking of the environment, recycling or disposing of millions of toxic car batteries is bound to be a grubby process.

Where’s the juice?: Since the roofs of most homes in Canada and other parts of the world are not covered in solar panels, plugging in an EV to recharge the battery means plugging into the electrical grid. What if millions of cars get plugged in at once on a hot day, when everyone is running air conditioners?

The next few decades could emerge as an epic energy battle between power-hungry air conditioners, whose demand is rising as summer temperatures rise, and EVs. The strain of millions of AC units running at once in the summer of 2020 during California’s run of record-high temperatures pushed the state into rolling blackouts. A few days ago, Alberta’s electricity system operator asked Albertans not to plug in their EVs because air conditioner use was straining the electricity supply.

According to the MIT Technology Review, rising incomes, populations and temperatures will triple the number of air conditioners used worldwide, to six billion, by mid-century. How will any warm country have enough power to recharge EVs and run air conditioners at the same time? The Canadian government didn’t say in its news release on the 2035 EV mandate. Will it fund the construction of new fleets of power stations?

The wrong government policy: The government’s announcement made it clear that widespread EV use – more cars – is central to its climate policy. Why not fewer cars and more public transportation? Cities don’t need more cars, no matter the propulsion system. They need electrified buses, subways and trains powered by renewable energy. But the idea of making cities more livable while reducing emissions is apparently an alien concept to this government.

 

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Building Energy Celebrates the Beginning of Operations and Electricity Generation

Building Energy Iowa Wind Farm delivers 30 MW of renewable energy near Des Moines, generating 110 GWh annually with wind turbines, a long-term PPA, CO2 reduction, and community benefits like jobs and clean power.

 

Key Points

Building Energy Iowa Wind Farm is a 30 MW project generating 110 GWh a year, cutting CO2 and supporting local jobs.

✅ 30 MW capacity, 10 onshore turbines (3 MW each)

✅ ~110 GWh per year; power for 11,000 households

✅ Long-term PPA; jobs and emissions reductions in Iowa

 

With 110 GWh generated per year, the plant will be beneficial to Iowa's environment, reflecting broader Iowa wind power investment trends, contributing to the reduction of 100,000 tons of CO2 emissions, as well as providing economic benefits to host local communities.

Building Energy SpA, multinational company operating as a global integrated IPP in the Renewable Energy Industry, amid milestones such as Enel's 450 MW U.S. wind project, through its subsidiary Building Energy Wind Iowa LLC, announces the inauguration of its first wind farm in Iowa, which adds up to 30 MW of wind distribution generation capacity. The project, located north of Des Moines, in Story, Boone, Hardin and Poweshiek counties, will generate approximately 110 GWh per year. The beginning of operations has been celebrated on the occasion of the Wind of Life event in Ames, Iowa, in the presence of Andrea Braccialarghe, MD America of Building Energy, Alessandro Bragantini, Chief Operating Officer of Building Energy and Giuseppe Finocchiaro, Italian Consul General.

The overall investment in the construction of the Iowa distribution generation wind farms amounted to $58 million and it sells its energy and related renewable credits under a bundled, long-term power purchase agreement with a local utility, reflecting broader utility investment trends such as WEC Energy's Illinois wind stake in the region.

The wind facility, developed, financed, owned and operated by Building Energy, consists of ten 3.0 MW geared onshore wind turbines, each with a rotor diameter of 125 meters mounted on an 87.5 meter steel tower. The energy generated will satisfy the energy needs of 11,000 U.S. households every year, similar in community impact to North Carolina's first wind farm, while avoiding the emission of about 70,000 tons of CO2 emissions every year, according to US Environmental Protection Agency methodology, which is equivalent to taking 15,000 cars off the road each year.

Besides the environmental benefits, the wind farm also has advantages for the local community, providing it with clean energy and creating jobs for local Iowans. The project involved more than a hundred of local skilled workers during the construction phase. Some of those jobs will be also permanent as necessary for the operation and maintenance activities as well as for additional services such as delivery, transportation, spare parts management, landscape mitigation, and further environmental monitoring studies.

The Company is present in many US states since 2013 with more than 500 MW of projects under development, spread across different renewable energy technologies, and aligning with federal initiatives like DOE wind energy awards that support innovation.

 

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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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Solar produced 4.7% of U.S. electricity in 2022, generation up 25%

US Solar Electricity Generation 2022 rose to a 4.7% share, with 202,256 GWh, per EIA Electric Power Monthly; driven by PV capacity additions despite import constraints, alongside renewables trends in wind, nuclear, and hydroelectric output.

 

Key Points

The share and output of US solar PV in 2022: 4.7% of electricity and 202,256 GWh, as reported by the EIA.

✅ Solar PV reached 4.7% of US power; 202,256 GWh generated in 2022.

✅ Monthly share varied from about 3% in Jan to just over 6% in Apr.

✅ Wind was 10.1%; wind+solar hit slightly over 20% in April.

 

In 2022, solar photovoltaics made up 4.7% of U.S. electricity generation, an increase of almost 21% over the 2021 total when solar produced 3.9% of US electricity and about 3% in 2020 according to long-term outlooks. Total solar generation was up 25%, breaking through 200,000 GWh for the year.

The record deployment volumes of 2020 when renewables became the second-most U.S. electricity source and 2021 are the main factors behind this increase. If it were not for ongoing solar panel import difficulties and general inflation, solar’s contribution to electricity generation might have reached 5% in 2022. The data was released by the Department of Energy’s Energy Information Administration (EIA) in their Electric Power Monthly. This release includes data from December 2022, as well as the rest of the data from 2022.

Solar as a percentage of monthly electricity generation ranged from a low of almost 3% in January, to just over 6% in April. April’s production marked a new monthly record for solar generation in the US and coincided with a renewables share record that month.

Total generation of solar electricity peaked in July, at 21,708 GWh. Over the course of the year, solar production reached  202,256 GWh, and total U.S. electricity generation reached 4,303,980 GWh, a year in which renewables surpassed coal in the power mix overall. Total US electricity generation increased by 3.5% over the 4,157,467 GWh produced in 2021.

In 2022, wind energy contributed 10.1% of the total electricity generated in the United States. Wind and solar together produced 14.8% of U.S. electricity in 2022, growing from the 13% recorded in 2021. In April, when solar power peaked at just over 6%, wind and solar power together reached a peak of slightly over 20%, as a wind-and-solar milestone versus nuclear was noted that month, a new monthly record for the two energy sources.

In total, emissions free energy sources such as wind, solar photovoltaic and thermal, nuclear, hydroelectric, and geothermal, accounted for 37.9% of the total electricity generated in the U.S., while renewables provided about 25.5% share of the mix during the year. This value is barely higher than 2020’s 37.7% – but represents a return to growth after 2021 saw a decrease in emission free electricity to 37%.

Nuclear power was the most significant contributor to emission free electricity, making up a bit more than 45% of the total emissions free electricity. Wind energy ranked second at 26%, followed by hydroelectricity at 15%, and solar photovoltaic at 12%, confirming solar as the #3 renewable in the U.S. mix.

Emissions free electricity is a different summation than the EIA’s ‘Renewable Energy’ category. The Renewable Energy category also includes:

  • Wood and Wood-Derived Fuels
  • Landfill Gas
  • Biogenic Municipal Solid Waste
  • Other Waste Biomass

Nuclear produced 17.9% of the total U.S. electricity, a value that has generally stayed flat over the years. However, since nuclear facilities are being retired faster than new facilities are coming online, nuclear production has fallen in the past two years. After multiple long delays, we will probably see reactor three of the Vogtle nuclear facility come online in 2023. Reactor four is officially scheduled to come online later this year.

Hydroelectric production also declined in 2022, due to drought conditions in the southwestern United States. With rain and snow storms in California and the southwest, hydroelectricity generation may rebound in 2023.

 

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U.S. to work with allies to secure electric vehicle metals

US EV Battery Minerals Strategy prioritizes critical minerals with allies, lithium and copper sourcing, battery recycling, and domestic processing, leveraging the Development Finance Corporation to strengthen EV supply chains and reduce reliance on China.

 

Key Points

A US plan to secure critical minerals with allies, boost recycling, and expand domestic processing for EV batteries.

✅ DFC financing for allied lithium and copper projects

✅ Battery recycling to diversify critical mineral supply

✅ Domestic processing with strong environmental standards

 

The United States must work with allies to secure the minerals needed for electric vehicle batteries, addressing pressures on cobalt reserves that could influence supply, and process them domestically in light of environmental and other competing interests, the White House said on Tuesday.

The strategy, first reported by Reuters in late May, will include new funding to expand international investments in electric vehicles (EV) metal projects through the U.S. Development Finance Corporation, as well as new efforts to boost supply from EV battery recycling initiatives.

The U.S. has been working to secure minerals from allied countries, including Canada and Finland, with projects such as Alberta lithium development showing potential. The 250-page report outlining policy recommendations mentioned large lithium supplies in Chile and Australia, the world's two largest producers of the white battery metal.

President Joe Biden's administration will also launch a working group to identify where minerals used in EV batteries and other technologies can be produced and processed domestically.

Securing enough copper, lithium and other raw materials to make EV batteries, amid lithium supply concerns heightened by recent disruptions, is a major obstacle to Biden’s aggressive EV adoption plans, with domestic mines facing extensive regulatory hurdles and environmental opposition.

The White House acknowledged China's role as the world's largest processor of EV metals and said it would expand efforts, including a 100% EV tariff on certain imports, to lessen that dependency.

"The United States cannot and does not need to mine and process all critical battery inputs at home. It can and should work with allies and partners to expand global production and to ensure secure global supplies," it said in the report.

The White House also said the Department of the Interior and others agencies will work to identify gaps in mine permitting laws to ensure any new production "meets strong standards" in terms of both the environment and community input.

The report noted Native American opposition to Lithium Americas Corp's (LAC.TO) Thacker Pass lithium project in Nevada, as well as plans by automaker Tesla Inc (TSLA.O) to produce its own lithium.

The steps come after Biden, who has made fighting climate change and competing with China centerpieces of his agenda, ordered a 100-day review of gaps in supply chains in key areas, including EVs.

Democrats are pushing aggressive climate goals, as Canada EV manufacturing accelerates in parallel, to have a majority of U.S.-manufactured cars be electric by 2030 and every car on the road to be electric by 2040.

As part of the recommendations from four executive branch agencies, Biden is being advised to take steps to restore the country's strategic mineral stockpile and expand funding to map the mineral resources available domestically.

Some of those steps would require the support of Congress, where Biden's fellow Democrats have only slim majorities.

The Energy Department already has $17 billion in authority through its Advanced Technology Vehicles Manufacturing Loan program to fund some investments, and is also launching a lithium-battery workforce initiative to build critical skills.

The program’s administrators will focus on financing battery manufacturers and companies that refine, recycle and process critical minerals, the White House said.

 

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