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Hydro-Quebec hydropower exports deliver low-carbon electricity to New England, sparking debate on greenhouse gas accounting, grid attributes, and REC-style certificates as Quebec modernizes monitoring to verify emissions, integrate renewables, and meet ambitious climate targets.

Key Points

Low-carbon electricity to New England, with improved emissions tracking and verifiable grid attributes.

✅ Deep, narrow reservoirs cut lifecycle GHGs in cold boreal waters

✅ Attribute certificates trace source, type, and carbon intensity

✅ Contracts require facility-level tagging for compliance

For 40 years, through the most vicious interprovincial battles, even as proposals for bridging the Alberta-B.C. gap aimed to improve grid resilience, Canadians could agree on one way Quebec is undeniably superior to the rest of the country.

It’s hydropower, and specifically the mammoth dam system in Northern Quebec that has been paying dividends since it was first built in the 70s. “Quebec continues to boast North America’s lowest electricity prices,” was last year’s business-as-usual update in one trade publication, even as Newfoundland's rate strategy seeks relief for consumers.

With climate crisis looming, that long-ago decision earns even more envy and reflects Canada's electricity progress across the grid today. Not only do they pay less, but Quebeckers also emit the least carbon per capita of any province.

It may surprise most Canadians, then, to hear how most of New England has reacted to the idea of being able to buy permanently into Quebec’s power grid.

​​​​​​Hydro-Québec’s efforts to strike major export deals have been rebuffed in the U.S., by environmentalists more than anyone. They question everything about Quebec hydropower, including asking “is it really low-carbon?”

These doubts may sound nonsensical to regular Quebeckers. But airing them has, in fact, pushed Hydro-Québec to learn more about itself and adopt new technology.

We know far more about hydropower than we knew 40 years ago, including whether it’s really zero-emission (it’s not), how to make it as close to zero-emission as possible, and how to account for it as precisely as new clean energies like solar and wind, underscoring how cleaning up Canada's electricity is vital to meeting climate pledges.

The export deals haven’t gone through yet, but they’ve already helped drag Hydro-Québec—roughly the fourth-biggest hydropower system on the planet—into the climate era.

Fighting to export
One of the first signs of trouble for Quebec hydro was in New Hampshire, almost 10 years ago. People there began pasting protest signs on their barns and buildings. One citizens’ group accused Hydro of planning a “monstrous extension cord” across the state.

Similar accusations have since come from Maine, Massachusetts and New York.

The criticism isn’t coming from state governments, which mostly want a more permanent relationship with Hydro-Québec. They already rely on Quebec power, but in a piecemeal way, topping up their own power grid when needed (with the exception of Vermont, which has a small permanent contract for Quebec hydropower).

Last year, Quebec provided about 15 percent of New England’s total power, plus another substantial amount to New York, which is officially not considered to be part of New England, and has its own energy market separate from the New England grid.

Now, northeastern states need an energy lynch pin, rather than a top-up, with existing power plants nearing the end of their lifespans. In Massachusetts, for example, one major nuclear plant shut down this year and another will be retired in 2021. State authorities want a hydro-based energy plan that would send $10 billion to Hydro-Québec over 20 years.

New England has some of North America’s most ambitious climate goals, with every state in the region pledging to cut emissions by at least 80 percent over the next 30 years.

What’s the downside? Ask the citizens’ groups and nonprofits that have written countless op-eds, organized petitions and staged protests. They argue that hydropower isn’t as clean as cutting-edge clean energy such as solar and wind power, and that Hydro-Québec isn’t trying hard enough to integrate itself into the most innovative carbon-counting energy system. Right as these other energy sources finally become viable, they say, it’s a step backwards to commit to hydro.

As Hydro-Québec will point out, many of these critics are legitimate nonprofits, but others may have questionable connections. The Portland Press Herald in Maine reported in September 2018 that a supposedly grassroot citizens’ group called “Stand Up For Maine” was actually funded by the New England Power Generators Association, which is based in Boston and represents such power plant owners as Calpine Corp., Vistra Energy and NextEra Energy.

But in the end, that may not matter. Arguably the biggest motivator to strike these deals comes not from New England’s needs, but from within Quebec. The province has spent more than $10 billion in the last 15 years to expand its dam and reservoir system, and in order to stay financially healthy, it needs to double its revenue in the next 10 years—a plan that relies largely on exports.

With so much at stake, it has spent the last decade trying to prove it can be an energy of the future.

“Learning as you go”
American critics, justified or not, have been forcing advances at Hydro for a long time.

When the famously huge northern Quebec hydro dams were built at James Bay—construction began in the early 1970s—the logic was purely economic. The term “climate change” didn’t exist. The province didn’t even have an environment department.

The only reason Quebec scientists started trying to measure carbon emissions from hydro reservoirs was “basically because of the U.S.,” said Alain Tremblay, a senior environmental advisor at Hydro Quebec.

Alain Tremblay, senior environmental advisor at Hydro-Québec. Photograph courtesy of Hydro-Québec
In the early 1990s, Hydro began to export power to the U.S., and “because we were a good company in terms of cost and efficiency, some Americans didn't like that,” he said—mainly competitors, though he couldn’t say specifically who. “They said our reservoirs were emitting a lot of greenhouse gases.”

The detractors had no research to back up that claim, but Hydro-Québec had none to refute it, either, said Tremblay. “At that time we didn’t have any information, but from back-of-the envelope calculations, it was impossible to have the emissions the Americans were expecting we have.”

So research began, first to design methods to take the measurements, and then to carry them out. Hydro began a five-year project with a Quebec university.

It took about 10 years to develop a solid methodology, Tremblay said, with “a lot of error and learning-as-you-go.” There have been major strides since then.

“Twenty years ago we were taking a sample of water, bringing it back to the lab and analyzing that with what we call a gas chromatograph,” said Tremblay. “Now, we have an automated system that can measure directly in the water,” reading concentrations of CO2 and methane every three hours and sending its data to a processing centre.

The tools Hydro-Québec uses are built in California. Researchers around the world now follow the same standard methods.

At this point, it’s common knowledge that hydropower does emit greenhouse gases. Experts know these emissions are much higher than previously thought.

Workers on the Eastmain-1 project environmental monitoring program. Photography courtesy of Alain Tremblay.
​But Hydro-Québec now has the evidence, also, to rebut the original accusations from the early 1990s and many similar ones today.

“All our research from Université Laval [found] that it’s about a thousand years before trees decompose in cold Canadian waters,” said Tremblay.

Hydro reservoirs emit greenhouse gases because vegetation and sometimes other biological materials, like soil runoff, decay under the surface.

But that decay depends partly on the warmth of the water. In tropical regions, including the southern U.S., hydro dams can have very high emissions. But in boreal zones like northern Quebec (or Manitoba, Labrador and most other Canadian locations with massive hydro dams), the cold, well-oxygenated water vastly slows the process.

Hydro emissions have “a huge range,” said Laura Scherer, an industrial ecology professor at Leiden University in the Netherlands who led a study of almost 1,500 hydro dams around the world.

“It can be as low as other renewable energy sources, but it can also be as high as fossil fuel energy,” in rare cases, she said.

While her study found that climate was important, the single biggest factor was “sizing and design” of each dam, and specifically its shape, she said. Ideally, hydro dams should be deep and narrow to minimize surface area, perhaps using a natural valley.

Hydro-Québec’s first generation of dams, the ones around James Bay, were built the opposite way—they’re wide and shallow, infamously flooding giant tracts of land.

Alain Tremblay, senior environmental advisor at Hydro-Québec testing emission levels. Photography courtesy of Alain Tremblay
Newly built ones take that new information into account, said Tremblay. Its most recent project is the Romaine River complex, which will eventually include four reservoirs near Quebec’s northeastern border with Labrador. Construction began in 2016.

The site was picked partly for its topography, said Tremblay.

“It’s a valley-type reservoir, so large volume, small surface area, and because of that there’s a pretty limited amount of vegetation that’s going to be flooded,” he said.

There’s a dramatic emissions difference with the project built just before that, commissioned in 2006. Called Eastmain, it’s built near James Bay.

“The preliminary results indicate with the same amount of energy generated [by Romaine] as with Eastmain, you’re going to have about 10 times less emissions,” said Tremblay.

Tracing energy to its source
These signs of progress likely won’t satisfy the critics, who have publicly argued back and forth with Hydro about exactly how emissions should be tallied up.

But Hydro-Québec also faces a different kind of growing gap when it comes to accounting publicly for its product. In the New England energy market, a sophisticated system “tags” all the energy in order to delineate exactly how much comes from which source—nuclear, wind, solar, and others—and allows buyers to single out clean power, or at least the bragging rights to say they bought only clean power.

Really, of course, it’s all the same mix of energy—you can’t pick what you consume. But creating certificates prevents energy producers from, in worst-case scenarios, being able to launder regular power through their clean-power facilities. Wind farms, for example, can’t oversell what their own turbines have produced.

What started out as a fraud prevention tool has “evolved to make it possible to also track carbon emissions,” said Deborah Donovan, Massachusetts director at the Acadia Center, a climate-focused nonprofit.

But Hydro-Québec isn’t doing enough to integrate itself into this system, she says.

It’s “the tool that all of our regulators in New England rely on when we are confirming to ourselves that we’ve met our clean energy and our carbon goals. And…New York has a tool just like that,” said Donovan. “There isn’t a tracking system in Canada that’s comparable, though provinces like Nova Scotia are tapping the Western Climate Initiative for technical support.”

Hydro Quebec Chénier-Vignan transmission line crossing the Outaouais river. Photography courtesy of Hydro-Québec
Developing this system is more a question of Canadian climate policy than technology.

Energy companies have long had the same basic tracking device—a meter, said Tanya Bodell, a consultant and expert in New England’s energy market. But in New England, on top of measuring “every time there’s a physical flow of electricity” from a given source, said Bodell, a meter “generates an attribute or a GIS certificate,” which certifies exactly where it’s from. The certificate can show the owner, the location, type of power and its average emissions.

Since 2006, Hydro-Québec has had the ability to attach the same certificates to its exports, and it sometimes does.

“It could be wind farm generation, even large hydro these days—we can do it,” said Louis Guilbault, who works in regulatory affairs at Hydro-Québec. For Quebec-produced wind energy, for example, “I can trade those to whoever’s willing to buy it,” he said.

But, despite having the ability, he also has the choice not to attach a detailed code—which Hydro doesn’t do for most of its hydropower—and to have it counted instead under the generic term of “system mix.”

Once that hydropower hits the New England market, the administrators there have their own way of packaging it. The market perhaps “tries to determine emissions, GHG content,” Guilbault said. “They have their own rules; they do their own calculations.”

This is the crux of what bothers people like Donovan and Bodell. Hydro-Québec is fully meeting its contractual obligations, since it’s not required to attach a code to every export. But the critics wish it would, whether by future obligation or on its own volition.

Quebec wants it both ways, Donovan argued; it wants the benefits of selling low-emission energy without joining the New England system of checks and balances.

“We could just buy undifferentiated power and be done with it, but we want carbon-free power,” Donovan said. “We’re buying it because of its carbon content—that’s the reason.”

Still, the requirements are slowly increasing. Under Hydro-Québec’s future contract with Massachusetts (which still has several regulatory steps to go through before it’s approved) it’s asked to sell the power’s attributes, not just the power itself. That means that, at least on paper, Massachusetts wants to be able to trace the energy back to a single location in Quebec.

“It’s part of the contract we just signed with them,” said Guilbault. “We’re going to deliver those attributes. I’m going to select a specific hydro facility, put the number in...and transfer that to the buyers.”

Hydro-Québec says it’s voluntarily increasing its accounting in other ways. “Even though this is not strictly required,” said spokeswoman Lynn St. Laurent, Hydro is tracking its entire output with a continent-wide registry, the North American Renewables Registry.

That registry is separate from New England’s, so as far as Bodell is concerned, the measure doesn’t really help. But she and others also expect the entire tracking system to grow and mature, perhaps integrating into one. If it had been created today, in fact, rather than in the 1990s, maybe it would use blockchain technology rather than a varied set of administrators, she said.

Counting emissions through tracking still has a long way to go, as well, said Donovan, and it will increasingly matter in Canada's race to net-zero as standards tighten. For example, natural gas is assigned an emissions number that’s meant to reflect the emissions when it’s consumed. But “we do not take into account what the upstream carbon emissions are through the pipeline leakage, methane releases during fracking, any of that,” she said.

Now that the search for exactitude has begun, Hydro-Québec won’t be exempt, whether or not Quebeckers share that curiosity. “We don’t know what Hydro-Québec is doing on the other side of the border,” said Donovan.

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U.S. Russian Uranium Import Ban reshapes nuclear fuel supply, bolstering energy security, domestic enrichment, and sanctions policy while diversifying reactor-grade uranium sources and supply chains through allies, waivers, and funding to sustain utilities and reliability.

Key Points

A U.S. law halting Russian uranium imports to boost energy security diversify nuclear fuel and revive U.S. enrichment.

✅ Cuts Russian revenue; reduces geopolitical risk.

✅ Funds U.S. enrichment; supports reactor fuel supply.

✅ Enables waivers to prevent utility shutdowns.

In a move aimed at reducing reliance on Russia and fostering domestic energy security for the long term, the United States has banned imports of Russian uranium, a critical component of nuclear fuel. This decision, signed into law by President Biden in May 2024, marks a significant shift in the U.S. nuclear fuel supply chain and has far-reaching economic and geopolitical implications.

For decades, Russia has been a major supplier of enriched uranium, a processed form of uranium used to power nuclear reactors. The U.S. relies on Russia for roughly a quarter of its enriched uranium needs, feeding the nation's network of 94 nuclear reactors operated by utilities which generate nearly 20% of the country's electricity. This dependence has come under scrutiny in recent years, particularly following Russia's invasion of Ukraine.

The ban on Russian uranium is a multifaceted response. First and foremost, it aims to cripple a key revenue stream for the Russian government. Uranium exports are a significant source of income for Russia, and by severing this economic tie, the U.S. hopes to weaken Russia's financial capacity to wage war.

Second, the ban serves as a national energy security measure. Relying on a potentially hostile nation for such a critical resource creates vulnerabilities. The possibility of Russia disrupting uranium supplies, either through political pressure or in the event of a wider conflict, is a major concern. Diversifying the U.S. nuclear fuel supply chain mitigates this risk.

Third, the ban is intended to revitalize the domestic uranium mining and enrichment industry, building on earlier initiatives such as Trump's uranium order announced previously. The U.S. has historically been a major uranium producer, but environmental concerns and competition from cheaper foreign sources led to a decline in domestic production. The ban, coupled with $2.7 billion in federal funding allocated to expand domestic uranium enrichment capacity, aims to reverse this trend.

The transition away from Russian uranium won't be immediate. The law includes a grace period until mid-August 2024, and waivers can be granted to utilities facing potential shutdowns if alternative suppliers aren't readily available. Finding new sources of enriched uranium will require forging partnerships with other uranium-producing nations like Kazakhstan, Canada on minerals cooperation, and Australia.

The long-term success of this strategy hinges on several factors. First, successfully ramping up domestic uranium production will require overcoming regulatory hurdles and addressing environmental concerns, alongside nuclear innovation to modernize the fuel cycle. Second, securing reliable alternative suppliers at competitive prices is crucial, and supportive policy frameworks such as the Nuclear Innovation Act now in law can help. Finally, ensuring the continued safe and efficient operation of existing nuclear reactors is paramount.

The ban on Russian uranium is a bold move with significant economic and geopolitical implications. While challenges lie ahead, the potential benefits of a more secure and domestically sourced nuclear fuel supply chain are undeniable. The success of this initiative will be closely watched not only by the U.S. but also by other nations seeking to lessen their dependence on Russia for critical resources.

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EV Firefighter Cancer Risks: lithium-ion battery fires, toxic metals like nickel and chromium, hazardous smoke plumes, and prolonged exposure threaten first responders; SCBA use, decontamination, and evidence-based protocols help reduce occupational health impacts.

Key Points

Health hazards from EV battery fires exposing responders to toxic metals and smoke, elevating long-term cancer risk.

✅ Nickel and chromium in EV smoke linked to lung and sinus cancers

✅ Use SCBA, on-scene decon, and post-incident cleaning to cut exposure

✅ Adopt EV fire SOPs: cooling, monitoring, isolation, air monitoring

As electric vehicles (EVs) become more popular, the EV fire risks to firefighters are becoming an increasing concern. These fires, fueled by the high-capacity lithium-ion batteries in EVs, produce dangerous chemical exposures that could have serious long-term health implications for first responders.

Claudine Buzzo, a firefighter and cancer survivor, knows firsthand the dangers that come with the profession. She’s faced personal health battles, including rare pancreatic cancer and breast cancer, both of which she attributes to the hazards of firefighting. Now, as EV adoption increases and some research links adoption to fewer asthma-related ER visits in local communities, Buzzo and her colleagues are concerned about how EV fires might add to their already heavy exposure to harmful chemicals.

The fire risks associated with EVs are different from those of traditional gasoline-powered vehicles. Dr. Alberto Caban-Martinez, who is leading a study at the Sylvester Comprehensive Cancer Center, explains that the high concentrations of metals released in the smoke from an EV fire are linked to various cancers. For instance, nickel, a key component in EV batteries, is associated with lung, nasal, and laryngeal cancers, while chromium, another metal found in some EV batteries, is linked to lung and sinus cancers.

Research from the Firefighter Cancer Initiative indicates that the plume of smoke from an EV fire contains significantly higher concentrations of these metals than fires from traditional vehicles. This raises the risk of long-term health problems for firefighters who respond to such incidents.

While the Electric Vehicle Association acknowledges the risks associated with various types of vehicle fires, they maintain that the lithium-ion batteries in EVs may not present a significantly higher risk than other common fire hazards, even as broader assessments suggest EVs are not a silver bullet for climate goals. Nonetheless, the growing body of research is causing concern among health experts, urging for further studies into how these new types of fires could affect firefighter health and how upstream electricity generation, where 18% of electricity in 2019 came from fossil fuels in Canada, factors into overall risk perceptions.

Fire departments and health researchers are working to understand the full scope of these risks and are emphasizing the importance of protective gear, such as self-contained breathing apparatuses, to minimize exposure during EV fire responses, while also considering questions like grid impacts during charging operations and EV sustainability improvements in different regions.

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Quebec Energy Bill Tariff Delay disrupts Canada-U.S. trade, renewable energy investment, hydroelectric expansion, and clean technology projects, as Trump tariffs on aluminum and steel raise costs, threatening climate targets and green infrastructure timelines.

Key Points

A policy pause in Quebec from U.S. tariff threats, disrupting clean investment, hydro expansion, and climate targets.

✅ Tariff risk inflates aluminum and steel project costs.

✅ Quebec delays clean energy legislation amid trade uncertainty.

✅ Hydroelectric reliance complicates emissions reduction timelines.

The Trump administration's tariff threat has had a significant impact on Quebec's energy sector, with tariff threats boosting support for projects even as the uncertainty resulted in the delay of a critical energy bill. Originally introduced to streamline energy development and tackle climate change, the bill was meant to help transition Quebec towards greener alternatives while fostering economic growth. However, the U.S. threat to impose tariffs on Canadian goods, including energy products, introduced a wave of uncertainty that led to a pause in the bill's legislative process.

Quebec’s energy bill had ambitious goals of transitioning to renewable sources like wind, solar, and hydroelectric power. It sought to support investments in clean technologies and the expansion of the province's clean energy infrastructure, as the U.S. demand for Canadian green power continues to grow across the border. Moreover, it emphasized the reduction of carbon emissions, an important step towards meeting Quebec's climate targets. At its core, the bill aimed to position the province as a leader in green energy development in Canada and globally.

The interruption caused by President Donald Trump's tariff rhetoric has, however, cast a shadow over the legislation. Tariffs, if enacted, would disproportionately affect Canada's energy exports, with electricity exports at risk under growing tensions, particularly in sectors like aluminum and steel, which are integral to energy infrastructure development. These tariffs could increase the cost of energy-related projects, thereby hindering Quebec's ability to achieve its renewable energy goals and reduce carbon emissions in a timely manner.

The tariff threat was seen as a part of the broader trade tensions between the U.S. and Canada, a continuation of the trade war that had escalated under Trump’s presidency. In this context, the Quebec government was forced to reconsider its legislative priorities, with policymakers citing concerns over the potential long-term consequences on the energy industry, as leaders elsewhere threatened to cut U.S.-bound electricity to exert leverage. With the uncertainty around tariffs and trade relations, the government opted to delay the bill until the geopolitical situation stabilized.

This delay underscores the vulnerability of Quebec’s energy agenda to external pressures. While the provincial government had set its sights on an ambitious green energy future, it now faces significant challenges in ensuring that its projects remain economically viable under the cloud of potential tariffs, even as experts warn against curbing Quebec's exports during the dispute. The delay in the energy bill also reflects broader challenges faced by the Canadian energy sector, which is highly integrated with the U.S. market.

The situation is further complicated by the province's reliance on hydroelectric power, a cornerstone of its energy strategy that supplies markets like New York, where tariffs could spike New York energy prices if cross-border flows are disrupted. While hydroelectric power is a clean and renewable source of energy, there are concerns about the environmental impact of large-scale dams, and these concerns have been growing in recent years. The tariff threat may prompt a reevaluation of Quebec’s energy mix and force the government to balance its environmental goals with economic realities.

The potential imposition of tariffs also raises questions about the future of North American energy cooperation. Historically, Canada and the U.S. have enjoyed a symbiotic energy relationship, with significant energy trade flowing across the border. The energy bill in Quebec was designed with the understanding that cross-border energy trade would continue to thrive. The Trump administration's tariff threat, however, casts doubt on this stability, forcing Quebec lawmakers to reconsider how they proceed with energy policy in a more uncertain trade environment.

Looking forward, Quebec's energy sector will likely need to adjust its strategies to account for the possibility of tariffs, while still pushing for a sustainable energy future, especially if Biden outlook for Canada's energy proves more favorable for the sector in the medium term. It may also open the door for deeper discussions about diversification, both in terms of energy sources and trade partnerships, as Quebec seeks to mitigate the impact of external threats. The delay in the energy bill, though unfortunate, may serve as a wake-up call for Canadian lawmakers to rethink how they balance environmental goals with global trade realities.

Ultimately, the Trump tariff threat highlights the delicate balance between regional energy ambitions and international trade dynamics. For Quebec, the delay in the energy bill could prove to be a pivotal moment in shaping the future of its energy policy.

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EDP Takeover Bid Rejection signals pushback on China Three Gorges' acquisition bid, as investors, shareholders, and analysts cite low premium, valuation concerns, and strategic renewables assets across Portugal, the US, Brazil, and Europe utilities.

Key Points

EDP's board views China Three Gorges' 3.26 euro per share offer as too low, citing valuation and renewables exposure.

✅ Bid premium 4.8% above close seen as inadequate.

✅ Stock surged above offer; market expects higher price.

✅ Advisors UBS and Morgan Stanley guiding EDP.

EDP-Energias de Portugal SA is poised to reject a 9.1 billion euro ($10.9 billion) takeover offer from China Three Gorges Corp. on the grounds that it undervalues Portugal’s biggest energy company, according to people with knowledge of the matter.

The board of EDP, which may meet as early as this week, views the current bid of 3.26 euros a share as too low as it indicates a premium of 4.8 percent over Friday’s close, said the people, asking not to be identified because the discussions are private. EDP is also working with advisers including UBS Group AG and Morgan Stanley on the potential deal, they said.

Representatives for EDP, UBS and Morgan Stanley declined to comment. Representatives for Three Gorges didn’t immediately respond to requests for comment.

#google#

Shares of EDP surged the most in a decade to above the bid level on Monday, signaling that investors expect the Chinese utility, which is its biggest investor, to sweeten the offer to gain full control. For Three Gorges, which spent two decades building a hydro-power plant spanning China’s Yangtze River, the deal would bolster its efforts to expand abroad and give it deeper access to markets in Europe, the U.S. and Brazil.

China’s biggest renewable-energy developer already is the largest shareholder of EDP with a 23 percent stake and now is seeking more than 50 percent. While the government in Lisbon has indicated it’s comfortable with the Chinese offer, EDF electricity price deal illustrates policy dynamics in the region and it holds out little incentive for shareholders to tender their stock.

Stock Jumps

Shares of EDP rose 9.3 percent to 3.40 euros in Lisbon on Monday, even as rolling back European electricity prices remains challenging, after earlier jumping by the most since October 2008.

“We believe the price offered is too low for China Three Gorges to achieve full control of a vehicle that provides, among other things, a strategic footprint into U.S. renewables,” Javier Garrido, an analyst at JPMorgan Chase & Co., said in a note. “We expect management and minorities to claim a higher price.”

The offer adds to a wave of investments China has made overseas, both to earn a yield on its cash and to gain expertise in industries ranging from energy to telecommunications and transport. Concern about those deals has been mounting in the U.S. regulatory arena recently. European Union governments have been divided in their response, with Portugal among those most supportive of inward investment.

“China Three Gorges is an ambitious company, with expansion already in international hydro, Chinese onshore wind and floating solar, and European offshore wind,” said Angus McCrone, a senior analyst at Bloomberg New Energy Finance in London. “It may have to do better on bid price than the 5 percent premium so far offered for EDP.”

Fortum’s Troubles

The low premium offered by Three Gorges echoes the struggle Fortum Oyj had in winning over investors in its bid for Uniper SE last year, while North American deals such as Hydro One’s Avista bid faced customer backlash as well, highlighting parallels. The Finnish utility offered 8 billion euros to buy out the remainder of Uniper in September, immediately sending shares of the German power generator above the offer prices. At least for now, Fortum has settled for a 47 percent stake it bought in Uniper from EON SE, and most other shareholders decided to keep their stake.

The EDP transaction would advance a wave of consolidation among Europe’s leading utilities, which are acquiring assets and development skills in renewables as governments across the region crack down on pollution. EDP is one of Europe’s leading developers of renewable energy, building mainly wind farms and hydro plants, and has expanded in markets including Brazil and the U.S. electrification market.

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Attosecond Electron Transport uses ultrafast lasers and single-cycle light pulses to drive tunneling in bowtie gold nanoantennas, enabling sub-femtosecond switching in optoelectronic nanostructures and surpassing picosecond silicon limits for next-gen computing.

Key Points

A light-driven method that manipulates electrons with ultrafast pulses to switch currents within attoseconds.

✅ Uses single-cycle light pulses to drive electron tunneling

✅ Achieves 600 attosecond current switching in nano-gaps

✅ Enables optoelectronic, plasmonic devices beyond silicon

When it comes to data transfer and computing, the faster we can shift electrons and conduct electricity the better – and scientists have just been able to transport electrons at sub-femtosecond speeds (less than one quadrillionth of a second) in an experimental setup.

The trick is manipulating the electrons with light waves that are specially crafted and produced by an ultrafast laser. It might be a long while before this sort of setup makes it into your laptop, but similar precision is seen in noninvasive interventions where targeted electrical stimulation can boost short-term memory for limited periods, and the fact they pulled it off promises a significant step forward in terms of what we can expect from our devices.

Right now, the fastest electronic components can be switched on or off in picoseconds (trillionths of a second), a pace that intersects with debates over 5G electricity use as systems scale, around 1,000 times slower than a femtosecond.

With their new method, the physicists were able to switch electric currents at around 600 attoseconds (one femtosecond is 1,000 attoseconds).

"This may well be the distant future of electronics," says physicist Alfred Leitenstorfer from the University of Konstanz in Germany. "Our experiments with single-cycle light pulses have taken us well into the attosecond range of electron transport."

Leitenstorfer and his colleagues were able to build a precise setup at the Centre for Applied Photonics in Konstanz. Their machinery included both the ability to carefully manipulate ultrashort light pulses, and to construct the necessary nanostructures, including graphene architectures, where appropriate.

The laser used by the team was able to push out one hundred million single-cycle light pulses every single second in order to generate a measurable current. Using nanoscale gold antennae in a bowtie shape (see the image above), the electric field of the pulse was concentrated down into a gap measuring just six nanometres wide (six thousand-millionths of a metre).

As a result of their specialist setup and the electron tunnelling and accelerating it produced, the researchers could switch electric currents at well under a femtosecond – less than half an oscillation period of the electric field of the light pulses.

Getting beyond the restrictions of conventional silicon semiconductor technology has proved a challenge for scientists, but using the insanely fast oscillations of light to help electrons pick up speed could provide new avenues for pushing the limits on electronics, as our power infrastructure is increasingly digitized and integrated with photonics.

And that's something that could be very advantageous in the next generation of computers: scientists are currently experimenting with the way that light and electronics could work together in all sorts of different ways, from noninvasive brain stimulation to novel sensors.

Eventually, Leitenstorfer and his team think that the limitations of today's computing systems could be overcome using plasmonic nanoparticles and optoelectronic devices, using the characteristics of light pulses to manipulate electrons at super-small scales, with related work even exploring electricity from snowfall under specific conditions.

"This is very basic research we are talking about here and may take decades to implement," says Leitenstorfer.

The next step is to experiment with a variety of different setups using the same principle. This approach might even offer insights into quantum computing, the researchers say, although there's a lot more work to get through yet - we can't wait to see what they'll achieve next.

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