SILSBEE, TEXAS –
Throughout January and lasting until April the next, Entergy Texas, Inc. customers in portions of Hardin County can expect to see contract workers removing vegetation in order to prevent problems for their electric service.
Work is scheduled to get underway Monday, Dec. 22 along a power line out of the Warren Substation on FM 1943 West. The line is a little more than 110 line miles long and serves 1,100 customers, located between Warren and Village Mills with most of them in the Wildwood Subdivision.
“Our goal is to keep the lights on for our customers,” said Sam Bethea, customer service representative for the area. “A key part of accomplishing that is to schedule all of our power lines to receive regular vegetation maintenance. This helps ensure that limbs and other vegetation are cleared away in order to minimize power interruptions to our customers.”
While crews will be in highly-visible bucket trucks and other specialized equipment, customers can expect to see crews working manually to remove vegetation. Drivers in the area are urged to be alert for the workers and use caution when nearing work areas.
Belarus Nuclear Power Infrastructure Review evaluates IAEA INIR Phase 3 readiness at Ostrovets NPP, VVER-1200 reactors, legal and regulatory framework, commissioning, safety, emergency preparedness, and energy diversification in a low-carbon program.
Key Points
An IAEA INIR Phase 3 assessment of Belarus readiness to commission and operate the Ostrovets NPP with VVER-1200 units.
✅ Reviews legal, regulatory, and institutional arrangements
✅ Confirms Phase 3 readiness for safe commissioning and operation
✅ Highlights good practices in peer reviews and emergency planning
An International Atomic Energy Agency (IAEA) team of experts today concluded a 12-day mission to Belarus to review its infrastructure development for a nuclear power programme. The Integrated Nuclear Infrastructure Review (INIR) was carried out at the invitation of the Government of Belarus.
Belarus, seeking to diversify its energy production with a reliable low-carbon source, and aware of the benefits of energy storage for grid flexibility, is building its first nuclear power plant (NPP) at the Ostrovets site, about 130 km north-west of the capital Minsk. The country has engaged with the Russian Federation to construct and commission two VVER-1200 pressurised water reactors at this site and expects the first unit to be connected to the grid this year.
The INIR mission reviewed the status of nuclear infrastructure development using the Phase 3 conditions of the IAEA’s Milestones Approach. The Ministry of Energy of Belarus hosted the mission.
The INIR team said Belarus is close to completing the required nuclear power infrastructure for starting the operation of its first NPP. The team made recommendations and suggestions aimed at assisting Belarus in making further progress in its readiness to commission and operate it, including planning for integration with variable renewables, as advances in new wind turbines are being deployed elsewhere to strengthen the overall energy mix.
“This mission marks an important step for Belarus in its preparations for the introduction of nuclear power,” said team leader Milko Kovachev, Head of the IAEA’s Nuclear Infrastructure Development Section. “We met well-prepared, motivated and competent professionals ready to openly discuss all infrastructure issues. The team saw a clear drive to meet the objectives of the programme and deliver benefits to the Belarusian people, such as supporting the country’s economic development, including growth in EV battery manufacturing sectors.”
The team comprised one expert from Algeria and two experts from the United Kingdom, as well as seven IAEA staff. It reviewed the status of 19 nuclear infrastructure issues using the IAEA evaluation methodology for Phase 3 of the Milestones Approach, noting that regional integration via an electricity highway can shape planning assumptions as well. It was the second INIR mission to Belarus, who hosted a mission covering Phases 1 and 2 in 2012.
Prior to the latest mission, Belarus prepared a Self-Evaluation Report covering all infrastructure issues and submitted the report and supporting documents to the IAEA.
The team highlighted areas where further actions would benefit Belarus, including the need to improve institutional arrangements and the legal and regulatory framework, drawing on international examples of streamlined licensing for advanced reactors to ensure a stable and predictable environment for the programme; and to finalize the remaining arrangements needed for sustainable operation of the nuclear power plant.
The team also identified good practices that would benefit other countries developing nuclear power in the areas of programme and project coordination, the use of independent peer reviews, cooperation with regulators from other countries, engagement with international stakeholders and emergency preparedness, and awareness of regional initiatives such as new electricity interconnectors that can enhance system resilience.
Mikhail Chudakov, IAEA Deputy Director General and Head of the Department of Nuclear Energy attended the Mission’s closing meeting. “Developing the infrastructure required for a nuclear power programme requires significant financial and human resources, and long lead times for preparation and the approval of major transmission projects that support clean power flows, and the construction activities,” he said. “Belarus has made commendable progress since the decision to launch a nuclear power programme 10 years ago.”
“Hosting the INIR mission, Belarus demonstrated its transparency and genuine interest to receive an objective professional assessment of the readiness of its nuclear power infrastructure for the commissioning of the country’s first nuclear power plant,” said Mikhail Mikhadyuk, Deputy Minister of Energy of the Republic of Belarus. ”The recommendations and suggestions we received will be an important guidance for our continuous efforts aimed at ensuring the highest level of safety and reliability of the Belarusian NPP."
Canada Clean Electricity Standard targets a net-zero grid by 2035, using carbon pricing, CO2 caps, and carbon capture while expanding renewables and interprovincial trade to decarbonize power in Alberta, Saskatchewan, and Ontario.
Key Points
A federal plan to reach a net-zero grid by 2035 using CO2 caps, carbon pricing, carbon capture, renewables, and trade.
✅ CO2 caps and rising carbon prices through 2050
✅ Carbon capture required on gas plants in high-emitting provinces
✅ Renewables build-out and interprovincial trade to balance supply
A new tool has been proposed in the federal election campaign as a way of eradicating the carbon emissions from Canada’s patchwork electricity system.
As the country’s need for power grows through the decarbonization of transportation, industry and space heating, the Liberal Party climate plan is proposing a clean energy standard to help Canada achieve a 100% net-zero-electricity system by 2035, aligning with Canada’s net-zero by 2050 target overall.
The proposal echoes a report released August 19 by the David Suzuki Foundation and a group of environmental NGOs that also calls for a clean electricity standard, capping power-sector emissions, and tighter carbon-pricing regulations. The report, written by Simon Fraser University climate economist Mark Jaccard and data analyst Brad Griffin, asserts that these policies would effectively decarbonize Canada’s electricity system by 2035.
“Fuel switching from dirty fossil fuels to clean electricity is an essential part of any serious pathway to transition to a net-zero energy system by 2050,” writes Tom Green, climate policy advisor to the Suzuki Foundation, in a foreword to the report. The pathway to a net-zero grid is even more important as Canada switches from fossil fuels to electric vehicles, space heating and industrial processes, even as the Canadian Gas Association warns of high transition costs.
Under Jaccard and Griffin’s proposal, a clean electricity standard would be established to regulate CO2 emissions specifically from power plants across Canada. In addition, the plan includes an increase in the carbon price imposed on electricity system releases, combined with tighter regulation to ensure that 100% of the carbon price set by the federal government is charged to electricity producers. The authors propose that the current scheduled carbon price of $170 per tonne of CO2 in 2030 should rise to at least $300 per tonne by 2050.
In Alberta, Saskatchewan, Ontario, New Brunswick and Nova Scotia, the 2030 standard would mean that all fossil-fuel-powered electricity plants would require carbon capture in order to comply with the standard. The provinces would be given until 2035 to drop to zero grams CO2 per kilowatt hour, matching the 2030 standard for low-carbon provinces (Quebec, British Columbia, Manitoba, Newfoundland and Labrador and Prince Edward Island).
Alberta and Saskatchewan targeted Canada has a relatively clean electricity system, as shown by nationwide progress in electricity, with about 80% of the country’s power generated from low- or zero-emission sources. So the biggest impacts of the proposal will be felt in the higher-carbon provinces of Alberta and Saskatchewan. Alberta has a plan to switch from coal-based electric power to natural gas generation by 2023. But Saskatchewan is still working on its plan. Under the Jaccard-Griffin proposal, these provinces would need to install carbon capture on their gas-fired plants by 2030 and carbon-negative technology (biomass with carbon capture, for instance) by 2035. Saskatchewan has been operating carbon capture and storage technology at its Boundary Dam power station since 2014, but large-scale rollout at power plants has not yet been achieved in Canada.
With its heavy reliance on nuclear and hydro generation, Ontario’s electricity supply is already low carbon. Natural gas now accounts for about 7% of the province’s grid, but the clean electricity standard could pose a big challenge for the province as it ramps up natural-gas-generated power to replace electricity from its aging Pickering station, scheduled to go out of service in 2025, even as a fully renewable grid by 2030 remains a debated goal. Pickering currently supplies about 14% of Ontario’s power.
Ontario doesn’t have large geological basins for underground CO2 storage, as Alberta and Saskatchewan do, so the report says Ontario will have to build up its solar and wind generation significantly as part of Canada’s renewable energy race, or find a solution to capture CO2 from its gas plants. The Ontario Clean Air Alliance has kicked off a campaign to encourage the Ontario government to phase out gas-fired generation by purchasing power from Quebec or installing new solar or wind power.
As the report points out, the federal government has Supreme Court–sanctioned authority to impose carbon regulations, such as a clean electricity standard, and carbon pricing on the provinces, with significant policy implications for electricity grids nationwide.
The federal government can also mandate a national approach to CO2 reduction regardless of fuel source, encouraging higher-carbon provinces to work with their lower-carbon neighbours. The Atlantic provinces would be encouraged to buy power from hydro-heavy Newfoundland, for example, while Ontario would be encouraged to buy power from Quebec, Saskatchewan from Manitoba, and Alberta from British Columbia.
The Canadian Electricity Association, the umbrella organization for Canada’s power sector, did not respond to a request for comment on the Jaccard-Griffin report or the Liberal net-zero grid proposal.
Just how much more clean power will Canada need? The proposal has also kicked off a debate, and an IEA report underscores rising demand, about exactly how much additional electricity Canada will need in coming decades.
In his 2015 report, Pathways to Deep Decarbonization in Canada, energy and climate analyst Chris Bataille estimated that to achieve Canada’s climate net-zero target by 2050 the country will need to double its electricity use by that year.
Jaccard and Griffin agree with this estimate, saying that Canada will need more than 1,200 terawatt hours of electricity per year in 2050, up from about 640 terawatt hours currently.
But energy and climate consultant Ralph Torrie (also director of research at Corporate Knights) disputes this analysis.
He says large-scale programs to make the economy more energy efficient could substantially reduce electricity demand. A major program to install heat pumps and replace inefficient electric heating in homes and businesses could save 50 terawatt hours of consumption on its own, according to a recent report from Torrie and colleague Brendan Haley.
Put in context, 50 terawatt hours would require generation from 7,500 large wind turbines. Applied to electric vehicle charging, 50 terawatt hours could power 10 million electric vehicles.
While Torrie doesn’t dispute the need to bring the power system to net-zero, he also doesn’t believe the “arm-waving argument that the demand for electricity is necessarily going to double because of the electrification associated with decarbonization.”
Alberta Electricity Market Reforms aim to boost grid reliability and efficiency through a day-ahead market, transmission policy changes, clearer pricing signals, AESO oversight, and smarter siting near existing infrastructure to lower consumer costs.
Key Points
Policies add a day-ahead market and transmission fees to modernize the grid and improve reliability.
✅ Day-ahead market for clearer pricing and scheduling
✅ Up-front, non-refundable transmission payments by generators
✅ AESO to draft new rules by end of 2025
The Alberta government is implementing significant electricity policy changes to its electricity market to enhance system reliability and efficiency. These reforms aim to modernize the grid, accommodate growing energy demands, and align with best practices observed in other jurisdictions.
Proposed Market Reforms
The government has outlined several key initiatives:
Day-Ahead Market Implementation: Introducing a day-ahead market is intended to provide clearer pricing signals and improve the scheduling of electricity generation. This approach allows market participants to plan and commit to energy production in advance, enhancing grid stability.
Transmission Policy Revisions: The government proposes reforms to transmission policies, including the introduction of up-front and non-refundable transmission payments from new power generators. These payments would vary based on the proximity of new generators to existing transmission lines with available capacity. As part of a broader market overhaul, this strategy encourages the development of power plants in areas where existing infrastructure can be utilized, potentially reducing costs for consumers and businesses.
Government's Objectives
Minister of Affordability and Utilities, Nathan Neudorf, emphasized that these changes are necessary to meet growing energy demands and modernize Alberta’s electricity system. The government's goal is to create a more reliable and efficient electrical system that benefits both consumers and the broader economy.
Industry Reactions
The proposed reforms have elicited mixed reactions from industry stakeholders amid profound sector change across Alberta:
Renewable Energy Sector Concerns: The Canadian Renewable Energy Association (CanREA) has expressed concerns about the potential for punitive market and transmission changes, and some retailers have similarly urged caution. They advocate for policies that support the integration of renewable energy sources and ensure fair treatment within the market.
Regulatory Oversight: The Alberta Electric System Operator (AESO) is tasked with preparing restructured energy market rules by the end of 2025. This timeline reflects the government's commitment to a thorough and consultative approach to market reform.
Implications for Consumers
The Alberta government's proposed market changes aim to enhance the reliability and efficiency of the electricity system by considering measures such as a Rate of Last Resort to provide additional stability. By encouraging the development of power plants in areas with existing infrastructure, the reforms seek to reduce costs for consumers and businesses. However, the success of these initiatives will depend on careful implementation and ongoing engagement with all stakeholders to balance the diverse interests involved.
Alberta's proposed electricity market reforms represent a significant step toward modernizing the province's energy infrastructure. By introducing a day-ahead market and revising transmission policies, the government aims to create a more reliable and efficient electrical system and promote market competition more effectively. While these changes have generated diverse reactions, they underscore the government's commitment to addressing the evolving energy needs of Alberta's residents and businesses.
NY & NJ Utility Shutoff Moratorium suspends power, heat, and water disconnections amid COVID-19, as PSEG, Con Edison, Avangrid, and American Water pledge relief, supporting vulnerable customers with payment plans and health protections.
Key Points
A temporary pause on power, heat, and water shutoffs during COVID-19, as major utilities act to protect affected customers.
✅ Applies to power, gas, and water; restores prior shutoffs.
✅ Voluntary utility action; no PSC order required in NY.
✅ Initial moratorium runs through April; payment plans available.
New Jersey and New York utilities will keep the power, heat and water on for all customers in response to the coronavirus emergency, both states announced Friday.
Major utilities have agreed to suspend utility shut-offs, a particular concern for people who may be out of work and cannot afford to pay their bills.
“No utility can turn off service … if a person cannot pay their bill as a result of responding to this virus situation,” said New York Gov. Andrew Cuomo during a press conference Friday.
Utilities in New York have voluntarily agreed to this measure, according to the governor’s office, reflecting a broader state moratorium on disconnections during emergencies. No order from the Public Service Commission is expected.
With growing concerns about the economic impacts of a virtual shutdown of businesses and large events to curtail the spread of the novel coronavirus, advocates are increasingly pushing financial relief for families amid pandemic energy insecurity pressures. There’s a campaign in New York to suspend evictions and foreclosures, with growing political support. A similar call has gone out in New Jersey.
As the weather warms, shut-offs of electric and gas service due to nonpayment tend to pick up. If people are quarantined or out of work due to a widespread economic slowdown, some advocates say they shouldn’t have to worry about having the lights or heat turned off, especially as examples of unpaid utility bills straining cities have emerged elsewhere.
“We recognize that customers may experience financial difficulty as a result of the outbreak, whether they or a family member fall ill, are required to quarantine, or because their income is otherwise affected,” said Michael Jennings, a spokesperson for Public Service Enterprise Group — the parent company of Public Service Electric and Gas Company, New Jersey’s largest utility — in a statement.
The company’s policy will be in place at least through the end of April, as will Atlantic City Electric’s, and other utilities such as PG&E's pandemic response included a similar moratorium during the outbreak.
“Curtailing shut-offs is good public policy to make sure New Jersey residents aren’t left in the lurch as they’re dealing with coronavirus,” said Eric Miller, director of the Natural Resources Defense Council’s New Jersey energy policy program. “Not having a safe place to be because you don't have electricity, gas or water doesn’t do anything to help address the coronavirus.”
Water service has also drawn attention. Major cities, including Atlanta and Detroit, have suspended shut-offs to ensure residents have water to wash their hands, while Texas utilities waived fees to support customers as well. Seattle suspended water and electric shutoffs.
American Water, which operates in 16 states and has 650,000 customers in New Jersey and 350,000 in New York, has halted any shutoffs amid the coronavirus pandemic and will also restore service, and similarly Hydro One reconnected customers in Canada to maintain access. New York City does not shut off service for nonpayment, but does issue liens against people’s property.
“Everyone, regardless as to what industry, has to have a heightened responsibility that’s encompassed in compassion and take everything into consideration,” New Jersey state Sen. Teresa Ruiz (D-Essex) told POLITICO. “Now is not the time to be worrying about late payments or bills. We need to get past this, hopefully, to see what we’re facing and then deal with other things.”
PSEG Long Island, a subsidiary of PSEG that handles day-to-day operations for the Long Island Power Authority, was the first New York utility to announce it is also suspending shutoffs before the governor’s announcement. The moratorium will remain in place through the end of April.
Rich Berkley, with the Public Utility Law Project, which advocates for low-income customers in New York, said he’s been in touch with state officials to make sure the issue of utility bills is considered during the pandemic. New York already has requirements for utilities to offer deferred payment agreements before shutting off service, he noted.
“The state has to act to protect the most vulnerable households first,” he said. “To the extent that the state is declaring areas of emergency, this should be part of the remedies the state deploys.”
But he noted that not everyone will have trouble paying their utility bills if they’re under quarantine.
“Given the background of a collapsing stock and equity market, all of which matters to the utilities, and shifts in electricity demand during COVID-19, we have to be careful about blanket moratoriums [on shutoffs] in New York,” Berkley said.
Con Edison, the largest utility in the state serving most of New York City, had already informed the Department of Public Service it will suspend all shut-offs in the one-mile radius New Rochelle containment area, spokesperson Michael Clendenin said on Thursday. The moratorium on shutoffs now includes its entire New York City and Westchester County territory.
Avangrid, which owns New York State Electric & Gas and Rochester Gas & Electric, serving broad swathes of upstate New York, will suspend shut-offs due to unpaid bills for 30 days, spokesperson Michael Jamison said.
Mississauga Fuel Cell Electric Buses advance zero-emission public transit, leveraging hydrogen fuel cells, green hydrogen supply, rapid refueling, and extended range to cut GHGs, improve air quality, and modernize sustainable urban mobility.
Key Points
Hydrogen fuel cell buses power electric drivetrains for zero-emission service, long range, and quick refueling.
✅ Zero tailpipe emissions improve urban air quality
✅ Longer route range than battery-electric buses
✅ Hydrogen fueling is rapid, enabling high uptime
Mississauga, Ontario, is gearing up for a significant shift in its public transportation landscape with the introduction of fuel cell electric buses (FCEBs). This initiative marks a pivotal step toward reducing greenhouse gas emissions and enhancing the sustainability of public transport in the region. The city, known for its vibrant urban environment and bustling economy, is making strides to ensure that its transit system evolves in harmony with environmental goals.
The recent announcement highlights the commitment of Mississauga to embrace clean energy solutions. The integration of FCEBs is part of a broader strategy to modernize the transit fleet while tackling climate change. As cities around the world seek to reduce their carbon footprints, Mississauga’s initiative aligns with global trends toward greener urban transport, where projects like the TTC battery-electric buses demonstrate practical pathways.
What are Fuel Cell Electric Buses?
Fuel cell electric buses utilize hydrogen fuel cells to generate electricity, which powers the vehicle's electric motor. Unlike traditional buses that run on diesel or gasoline, FCEBs produce zero tailpipe emissions, making them an environmentally friendly alternative. The only byproducts of their operation are water and heat, significantly reducing air pollution in urban areas.
The technology behind FCEBs is becoming increasingly viable as hydrogen production becomes more sustainable. With the advancement of green hydrogen production methods, which use renewable energy sources to create hydrogen, and because some electricity in Canada still comes from fossil fuels, the environmental benefits of fuel cell technology are further amplified. Mississauga’s investment in these buses is not only a commitment to cleaner air but also a boost for innovative technology in the transportation sector.
Benefits for Mississauga
The introduction of FCEBs is poised to offer numerous benefits to the residents of Mississauga. Firstly, the reduction in greenhouse gas emissions aligns with the city’s climate action goals and complements Canada’s EV goals at the national level. By investing in cleaner public transit options, Mississauga is taking significant steps to improve air quality and combat climate change.
Moreover, FCEBs are known for their efficiency and longer range compared to battery electric buses, such as the Metro Vancouver fleet now operating across the region, commonly used in Canadian cities. This means they can operate longer routes without the need for frequent recharging, making them ideal for busy transit systems. The use of hydrogen fuel can also result in shorter fueling times compared to electric charging, enhancing operational efficiency.
In addition to environmental and operational advantages, the introduction of these buses presents economic opportunities. The deployment of FCEBs can create jobs in the local economy, from maintenance to hydrogen production facilities, similar to how St. Albert’s electric buses supported local capabilities. This aligns with broader trends of sustainable economic development that prioritize green jobs.
Challenges Ahead
While the potential benefits of FCEBs are clear, the transition to this technology is not without its challenges. One of the main hurdles is the establishment of a robust hydrogen infrastructure. To support the operation of fuel cell buses, Mississauga will need to invest in hydrogen production, storage, and fueling stations, much as Edmonton’s first electric bus required dedicated charging infrastructure. Collaboration with regional and provincial partners will be crucial to develop this infrastructure effectively.
Additionally, public acceptance and awareness of hydrogen technology will be essential. As with any new technology, there may be skepticism regarding safety and efficiency. Educational campaigns will be necessary to inform the public about the advantages of FCEBs and how they contribute to a more sustainable future, and recent TTC’s battery-electric rollout offers a useful reference for outreach efforts.
Looking Forward
As Mississauga embarks on this innovative journey, the introduction of fuel cell electric buses signifies a forward-thinking approach to public transportation. The city’s commitment to sustainability not only enhances its transit system but also sets a precedent for other municipalities to follow.
In conclusion, the shift towards fuel cell electric buses in Mississauga exemplifies a significant leap toward greener public transport. With ongoing efforts to tackle climate change and improve urban air quality, Mississauga is positioning itself as a leader in sustainable transit solutions. The future looks promising for both the city and its residents as they embrace cleaner, more efficient transportation options. As this initiative unfolds, it will be closely watched by other cities looking to implement similar sustainable practices in their own transit systems.
ITER Nuclear Fusion advances tokamak magnetic confinement, heating deuterium-tritium plasma with superconducting magnets, targeting net energy gain, tritium breeding, and steam-turbine power, while complementing laser inertial confinement milestones for grid-scale electricity and 2025 startup goals.
Key Points
ITER Nuclear Fusion is a tokamak project confining D-T plasma with magnets to achieve net energy gain and clean power.
✅ Tokamak magnetic confinement with high-temp superconducting coils
✅ Deuterium-tritium fuel cycle with on-site tritium breeding
✅ Targets net energy gain and grid-scale, low-carbon electricity
It sounds like the stuff of dreams: a virtually limitless source of energy that doesn’t produce greenhouse gases or radioactive waste. That’s the promise of nuclear fusion, often described as the holy grail of clean energy by proponents, which for decades has been nothing more than a fantasy due to insurmountable technical challenges. But things are heating up in what has turned into a race to create what amounts to an artificial sun here on Earth, one that can provide power for our kettles, cars and light bulbs.
Today’s nuclear power plants create electricity through nuclear fission, in which atoms are split, with next-gen nuclear power exploring smaller, cheaper, safer designs that remain distinct from fusion. Nuclear fusion however, involves combining atomic nuclei to release energy. It’s the same reaction that’s taking place at the Sun’s core. But overcoming the natural repulsion between atomic nuclei and maintaining the right conditions for fusion to occur isn’t straightforward. And doing so in a way that produces more energy than the reaction consumes has been beyond the grasp of the finest minds in physics for decades.
But perhaps not for much longer. Some major technical challenges have been overcome in the past few years and governments around the world have been pouring money into fusion power research as part of a broader green industrial revolution under way in several regions. There are also over 20 private ventures in the UK, US, Europe, China and Australia vying to be the first to make fusion energy production a reality.
“People are saying, ‘If it really is the ultimate solution, let’s find out whether it works or not,’” says Dr Tim Luce, head of science and operation at the International Thermonuclear Experimental Reactor (ITER), being built in southeast France. ITER is the biggest throw of the fusion dice yet.
Its $22bn (£15.9bn) build cost is being met by the governments of two-thirds of the world’s population, including the EU, the US, China and Russia, at a time when Europe is losing nuclear power and needs energy, and when it’s fired up in 2025 it’ll be the world’s largest fusion reactor. If it works, ITER will transform fusion power from being the stuff of dreams into a viable energy source.
Constructing a nuclear fusion reactor ITER will be a tokamak reactor – thought to be the best hope for fusion power. Inside a tokamak, a gas, often a hydrogen isotope called deuterium, is subjected to intense heat and pressure, forcing electrons out of the atoms. This creates a plasma – a superheated, ionised gas – that has to be contained by intense magnetic fields.
The containment is vital, as no material on Earth could withstand the intense heat (100,000,000°C and above) that the plasma has to reach so that fusion can begin. It’s close to 10 times the heat at the Sun’s core, and temperatures like that are needed in a tokamak because the gravitational pressure within the Sun can’t be recreated.
When atomic nuclei do start to fuse, vast amounts of energy are released. While the experimental reactors currently in operation release that energy as heat, in a fusion reactor power plant, the heat would be used to produce steam that would drive turbines to generate electricity, even as some envision nuclear beyond electricity for industrial heat and fuels.
Tokamaks aren’t the only fusion reactors being tried. Another type of reactor uses lasers to heat and compress a hydrogen fuel to initiate fusion. In August 2021, one such device at the National Ignition Facility, at the Lawrence Livermore National Laboratory in California, generated 1.35 megajoules of energy. This record-breaking figure brings fusion power a step closer to net energy gain, but most hopes are still pinned on tokamak reactors rather than lasers.
In June 2021, China’s Experimental Advanced Superconducting Tokamak (EAST) reactor maintained a plasma for 101 seconds at 120,000,000°C. Before that, the record was 20 seconds. Ultimately, a fusion reactor would need to sustain the plasma indefinitely – or at least for eight-hour ‘pulses’ during periods of peak electricity demand.
A real game-changer for tokamaks has been the magnets used to produce the magnetic field. “We know how to make magnets that generate a very high magnetic field from copper or other kinds of metal, but you would pay a fortune for the electricity. It wouldn’t be a net energy gain from the plant,” says Luce.
One route for nuclear fusion is to use atoms of deuterium and tritium, both isotopes of hydrogen. They fuse under incredible heat and pressure, and the resulting products release energy as heat
The solution is to use high-temperature, superconducting magnets made from superconducting wire, or ‘tape’, that has no electrical resistance. These magnets can create intense magnetic fields and don’t lose energy as heat.
“High temperature superconductivity has been known about for 35 years. But the manufacturing capability to make tape in the lengths that would be required to make a reasonable fusion coil has just recently been developed,” says Luce. One of ITER’s magnets, the central solenoid, will produce a field of 13 tesla – 280,000 times Earth’s magnetic field.
The inner walls of ITER’s vacuum vessel, where the fusion will occur, will be lined with beryllium, a metal that won’t contaminate the plasma much if they touch. At the bottom is the divertor that will keep the temperature inside the reactor under control.
“The heat load on the divertor can be as large as in a rocket nozzle,” says Luce. “Rocket nozzles work because you can get into orbit within minutes and in space it’s really cold.” In a fusion reactor, a divertor would need to withstand this heat indefinitely and at ITER they’ll be testing one made out of tungsten.
Meanwhile, in the US, the National Spherical Torus Experiment – Upgrade (NSTX-U) fusion reactor will be fired up in the autumn of 2022, while efforts in advanced fission such as a mini-reactor design are also progressing. One of its priorities will be to see whether lining the reactor with lithium helps to keep the plasma stable.
Choosing a fuel Instead of just using deuterium as the fusion fuel, ITER will use deuterium mixed with tritium, another hydrogen isotope. The deuterium-tritium blend offers the best chance of getting significantly more power out than is put in. Proponents of fusion power say one reason the technology is safe is that the fuel needs to be constantly fed into the reactor to keep fusion happening, making a runaway reaction impossible.
Deuterium can be extracted from seawater, so there’s a virtually limitless supply of it. But only 20kg of tritium are thought to exist worldwide, so fusion power plants will have to produce it (ITER will develop technology to ‘breed’ tritium). While some radioactive waste will be produced in a fusion plant, it’ll have a lifetime of around 100 years, rather than the thousands of years from fission.
At the time of writing in September, researchers at the Joint European Torus (JET) fusion reactor in Oxfordshire were due to start their deuterium-tritium fusion reactions. “JET will help ITER prepare a choice of machine parameters to optimise the fusion power,” says Dr Joelle Mailloux, one of the scientific programme leaders at JET. These parameters will include finding the best combination of deuterium and tritium, and establishing how the current is increased in the magnets before fusion starts.
The groundwork laid down at JET should accelerate ITER’s efforts to accomplish net energy gain. ITER will produce ‘first plasma’ in December 2025 and be cranked up to full power over the following decade. Its plasma temperature will reach 150,000,000°C and its target is to produce 500 megawatts of fusion power for every 50 megawatts of input heating power.
“If ITER is successful, it’ll eliminate most, if not all, doubts about the science and liberate money for technology development,” says Luce. That technology development will be demonstration fusion power plants that actually produce electricity, where advanced reactors can build on decades of expertise. “ITER is opening the door and saying, yeah, this works – the science is there.”
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