UK to fast-track vital grid connections


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UK Grid Connection Fast-Track would let the Energy Secretary instruct network operators and National Grid ESO to accelerate substation upgrades and transmission links for Tata's gigafactory, electric arc furnaces, and ready-to-build renewable projects.

 

Key Points

A UK plan letting the energy secretary fast-track grid connections via priority substation and transmission upgrades.

✅ Prioritizes substations and lines for strategic projects

✅ Supports Tata gigafactory and electric arc furnace conversions

✅ Complements Ofgem queue reforms and National Grid ESO changes

 

The UK energy secretary could be handed powers to fast-track connecting electricity-hungry projects, such as Jaguar Land Rover’s owner Tata’s planned electric battery factory, to the grid, under plans being discussed between government and regulators as part of the government’s green industrial revolution strategy.

Amid concerns about supply delays of up to 15 years in hooking up large schemes, the Guardian understands the move would allow Claire Coutinho to request that energy network companies accelerate upgrades to substations and power lines to connect specific new developments.

It is understood that the government and the regulator Ofgem have told National Grid’s electricity systems operator that they are “minded” to adopt its grid reform proposals to change the model for connections, which now moves at a pace set by each network operator.

A source said: “Foreign investors need assurances that, if these things are going to be built, then they can be hooked up quickly. There are physical assets, like substations and cross-Channel cables that transmission companies will need to build or upgrade.”

The government is belatedly attempting to tackle a logjam that has resulted in some developments facing a 10- to 15-year wait for a connection to the grid. Ofgem announced on Monday plans to remove “zombie” projects from the queue to connect up to speed up those ready to produce renewable power for the grid, with wind leading the power mix.

Although no equivalent queue exists for those looking to take power from the grid, ministers and officials are concerned that large projects could struggle to secure final investment and proceed without guarantees over their connection to the electricity supply.

Sources said changes to the rules had been proposed with several big projects in mind: Tata’s new £4bn electric battery factory, expected to be built in Somerset; and the switch to electric arc furnaces at Britain’s biggest steelworks at Port Talbot in south Wales, also owned by the Indian group.

The £1.25bn plan from British Steel, which is owned by China’s Jingye, to replace two blast furnaces at Scunthorpe steelworks, with an electric arc furnace at the north Lincolnshire plant and another at a site in Teesside, North Yorkshire, has also formed part of the proposals. Negotiations over the closure of blast furnaces at Port Talbot and Scunthorpe are expected to lead to thousands of job losses.

All three projects are likely to involve significant investment from the UK government, where a state-owned generation firm has been touted as a cost-saving option, alongside the companies’ overseas owners.

Britain has 10 distribution network operators, including National Grid and Northern Powergrid, which operate monopolies in their regions and handle transmission of power from the grid to end users.

Sources said the move could be announced as soon as this month, and may be included within the “connections action plan”, a broader overhaul of Britain’s network connections.

The plan, which is expected to be announced alongside the chancellor’s autumn statement next week, will rebalance the planning system to help speed up the connection of new solar and windfarms to the grid, as the biggest offshore windfarm begins UK supply this week.

 

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Arvato commissions first solar power plant

Arvato Ontario Solar Power Plant advances sustainability with rooftop photovoltaic panels, PPA financing, and green electricity, generating 800,000 kWh annually to cut logistics emissions, reduce energy costs, and support carbon-neutral supply chain operations.

 

Key Points

A rooftop PV system under a PPA, supplying low-cost green power to Arvato's Ontario, CA distribution center.

✅ 1,160 panels produce 800,000 kWh of renewable power yearly

✅ PPA model avoids upfront costs and lowers electricity rates

✅ Cuts center emissions by 72%; 45% roof coverage

 

Arvato continues to invest consistently in the sustainability of its distribution centers. To this end, the first solar power plant in the focus market has now been commissioned on the roof of the distribution center in Ontario, California. The solar power plant has 1,160 solar panels and generates more than 800,000 kilowatt hours (kWh) of green electricity annually. This reduces electricity costs and, with advances in battery storage, further cuts the logistics center's greenhouse gas emissions. Previously, the international supply chain and e-commerce service provider had converted five other distribution centers in the USA to green electricity.

The project started as early as November 2019 with an intensive site investigation. An extensive catalogue of measures and criteria had to be worked through to install and commission the solar power plant on the roof system. After a rigorous process involving numerous stakeholders, the new solar modules were installed in August 2022, similar to utility-scale deployments like the largest solar array in Washington seen recently. However, further approvals and permits were required before the solar system could be officially commissioned, a common step for solar power plants worldwide. Once official permission for the operation was granted, the switch could be flipped in February 2023, and production of environmentally friendly solar electricity could begin.

The photovoltaic system is operated under a Purchase Power Agreement (PPA), a model widely used in corporate renewable energy projects today. This unique financing mechanism is available in twenty-six U.S. states, including California. While a third-party developer installs, owns and operates the solar panels, Arvato purchases the electricity generated. This allows companies in the U.S. to support clean energy projects while buying low-cost electricity without having to finance upfront costs. "The PPA and the resulting benefits were quite critical to the success of this project," says Christina Greenwell, Microsoft AOC F&L Client Services Manager at Arvato, who managed the project from start to finish. "It allows us to reduce our electricity costs while supporting Bertelsmann's ambitious goal of becoming carbon neutral by 2030."

The 1,160 solar panels were added to an existing system of 920 panels owned by the logistics center's landlord. In total, the panels now cover 45 percent of the roof space at the Ontario distribution center. The emissions generated by the distribution center are now reduced by 72 percent with the new solar panels and clean power generation. As Bertelsmann plans to switch all its sites worldwide to 100 percent green electricity, renewable energy certificates will, as seen when Bimbo Canada signed agreements to offset 100 percent of its electricity for its operations, offset the remaining emissions.

"The new solar power plant is a significant step on our path to carbon neutrality and demonstrates our commitment to finding innovative solutions that reduce our carbon footprint," said Mitat Aydindag, President of North America at Arvato. "All employees at the site are pleased that our Ontario distribution center is now a pioneer and is providing effective support in achieving our ambitious climate goal in 2030."

Similar facility-level efforts include the Bright Feeds Berlin solar project underscoring momentum across industrial operations.

 

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Here's why the U.S. electric grid isn't running on 100% renewable energy yet

US Renewable Energy Transition is the shift from fossil fuels to wind, solar, and nuclear, targeting net-zero emissions via grid modernization, battery storage, and new transmission to replace legacy plants and meet rising electrification.

 

Key Points

The move to decarbonize electricity by scaling wind, solar, and nuclear with storage and transmission upgrades.

✅ Falling LCOE makes wind and solar competitive with gas and coal.

✅ 4-hour lithium-ion storage shifts solar to evening peak demand.

✅ New high-voltage transmission links resource-rich regions to load.

 

Generating electricity to power homes and businesses is a significant contributor to climate change. In the United States, one quarter of greenhouse gas emissions come from electricity production, according to the Environmental Protection Agency.

Solar panels and wind farms can generate electricity without releasing any greenhouse gas emissions, and recent research suggests wind and solar could meet about 80% of U.S. demand with supportive infrastructure. Nuclear power plants can too, although today’s plants generate long-lasting radioactive waste, which has no permanent storage repository.

But the U.S. electrical sector is still dependent on fossil fuels. In 2021, 61 percent of electricity generation came from burning coal, natural gas, or petroleum. Only 20 percent of the electricity in the U.S. came from renewables, mostly wind energy, hydropower and solar energy, according to the U.S. Energy Information Administration, and in 2022 renewable electricity surpassed coal nationwide as portfolios shifted. Another 19 percent came from nuclear power.

The contribution from renewables has been increasing steadily since the 1990s, and the rate of increase has accelerated, with renewables projected to reach one-fourth of U.S. generation in the near term. For example, wind power provided only 2.8 billion kilowatt-hours of electricity in 1990, doubling to 5.6 billion in 2000. But from there, it skyrocketed, growing to 94.6 billion in 2010 and 379.8 billion in 2021.

That’s progress, as the U.S. moves toward 30% electricity from wind and solar this decade, but it’s not happening fast enough to eliminate the worst effects of climate change for our descendants.

“We need to eliminate global emissions of greenhouse gases by 2050,” philanthropist and technologist Bill Gates wrote in his 2023 annual letter. “Extreme weather is already causing more suffering, and if we don’t get to net-zero emissions, our grandchildren will grow up in a world that is dramatically worse off.”

And the problem is actually bigger than it looks, even as pathways to zero-emissions electricity by 2035 are being developed.

“We need not just to create as much electricity as we have now, but three times as much,” says Saul Griffith, an entrepreneur who’s sold companies to Google and Autodesk and has written books on mass electrification. To get to zero emissions, all the cars and heating systems and stoves will have to be powered with electricity, said Griffith. Electricity is not necessarily clean, but at least it it can be, unlike gas-powered stoves or gasoline-powered cars.

The technology to generate electricity with wind and solar has existed for decades. So why isn’t the electric grid already 100% powered by renewables? And what will it take to get there?

First of all, renewables have only recently become cost-competitive with fossil fuels for generating electricity. Even then, prices depend on the location, Paul Denholm of the National Renewable Energy Laboratory told CNBC.

In California and Arizona, where there is a lot of sun, solar energy is often the cheapest option, whereas in places like Maine, solar is just on the edge of being the cheapest energy source, Denholm said. In places with lots of wind like North Dakota, wind power is cost-competitive with fossil fuels, but in the Southeast, it’s still a close call.

Then there’s the cost of transitioning the current power generation infrastructure, which was built around burning fossil fuels, and policymakers are weighing ways to meet U.S. decarbonization goals as they plan grid investments.

“You’ve got an existing power plant, it’s paid off. Now you need renewables to be cheaper than running that plant to actually retire an old plant,” Denholm explained. “You need new renewables to be cheaper just in the variable costs, or the operating cost of that power plant.”

There are some places where that is true, but it’s not universally so.

“Primarily, it just takes a long time to turn over the capital stock of a multitrillion-dollar industry,” Denholm said. “We just have a huge amount of legacy equipment out there. And it just takes awhile for that all to be turned over.”

 

Intermittency and transmission
One of the biggest barriers to a 100% renewable grid is the intermittency of many renewable power sources, the dirty secret of clean energy that planners must manage. The wind doesn’t always blow and the sun doesn’t always shine — and the windiest and sunniest places are not close to all the country’s major population centers.

Wind resources in the United States, according to the the National Renewable Energy Laboratory, a national laboratory of the U.S. Department of Energy.
Wind resources in the United States, according to the the National Renewable Energy Laboratory, a national laboratory of the U.S. Department of Energy.
National Renewable Energy Laboratory, a national laboratory of the U.S. Department of Energy.
The solution is a combination of batteries to store excess power for times when generation is low, and transmission lines to take the power where it is needed.

Long-duration batteries are under development, but Denholm said a lot of progress can be made simply with utility-scale batteries that store energy for a few hours.

“One of the biggest problems right now is shifting a little bit of solar energy, for instance, from say, 11 a.m. and noon to the peak demand at 6 p.m. or 7 p.m. So you really only need a few hours of batteries,” Denholm told CNBC. “You can actually meet that with conventional lithium ion batteries. This is very close to the type of batteries that are being put in cars today. You can go really far with that.”

So far, battery usage has been low because wind and solar are primarily used to buffer the grid when energy sources are low, rather than as a primary source. For the first 20% to 40% of the electricity in a region to come from wind and solar, battery storage is not needed, Denholm said. When renewable penetration starts reaching closer to 50%, then battery storage becomes necessary. And building and deploying all those batteries will take time and money.
 

 

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Renewables Poised to Eclipse Coal in Global Power Generation by 2025

IEA Electricity 2024 Renewables Outlook projects renewable energy surpassing coal in global electricity generation by early 2025, with nuclear power rebounding, clean energy expansion, electrification, and grid upgrades cutting emissions and decarbonizing power systems.

 

Key Points

IEA forecast: renewables beat coal by 2025, nuclear rebounds, speeding cleaner power and deeper emissions cuts by 2026.

✅ Renewables surpass coal by 2025; nuclear output hits records by 2025-2026.

✅ Power demand grows 3.4% avg to 2026 via EVs, data centers, electrification.

✅ Gas displaces coal; grids need investment; drought and supply chains pose risks.

 

The International Energy Agency's latest Electricity 2024 report predicts that renewable energy sources will surpass coal in global electricity generation by early 2025, reaching over one-third of the world's total power output. Additionally, nuclear power is expected to achieve record production levels by 2025, recovering from recent downturns and reflecting low-carbon electricity lessons from the COVID-19 period.

By 2026, the report estimates that renewables and nuclear will jointly contribute to nearly half of the global power generation, up from less than 40 percent in 2023. This shift is crucial as the United Nations emphasizes the transition to clean energy, with Asia to use half of electricity by 2025 highlighting the scale of the challenge, as a key factor in limiting global warming to 1.5 degrees Celsius above preindustrial levels.

IEA Executive Director Fatih Birol highlighted the promising trends of renewables, led by affordable solar power and the resurgence of nuclear power, as key factors covering almost all demand growth over the next three years.

At the COP28 climate summit in Dubai, participants agreed on a plan for phasing out fossil fuels and committed to tripling renewable capacity by 2030. This shift in the electricity mix is expected to reduce emissions from the power sector, which is currently the largest source of carbon dioxide emissions worldwide.

Despite a modest 2.2 percent growth in global electricity demand in 2023, an acceleration to an average annual increase of 3.4 percent is projected from 2024 to 2026. This surge in electricity demand is driven by factors like home and business electrification, the proliferation of electric vehicles, and industrial expansion.

Significant growth in electricity usage from data centers worldwide is anticipated, potentially doubling between 2022 and 2026, as global power demand has surged above pre-pandemic levels. Regulatory updates and technological advancements are essential to manage this energy consumption increase effectively.

Emissions from the electricity sector are expected to decrease following a 1 percent rise in 2023, with a more than 2 percent reduction projected in 2024 and continued declines in subsequent years. This reduced carbon intensity in electricity generation will enhance the emissions savings from electrifying cars and appliances.

Natural gas-fired power is predicted to see a modest increase over the next three years, primarily replacing coal power. While Europe has witnessed sharp declines in gas power, EU wind and solar beat gas last year, growth in the United States, Asia, Africa, and the Middle East is expected due to available liquefied natural gas supplies.

By 2026, fossil fuels are forecasted to account for 54 percent of global generation, dropping below 60 percent for the first time in over five decades. The U.S. is anticipated to boost renewable generation by approximately 10 percent annually between 2024 and 2026, surpassing coal generation in 2024.

The report warns of potential risks to clean energy trends, including droughts impacting hydropower, extreme weather affecting electricity reliability, and supply chain interruptions threatening new renewable and nuclear projects, and a generation mix sensitive to policies and gas prices that could shift trajectories.

Keisuke Sadamori, IEA’s director of energy markets and security, underscores the need for continued investment in grid infrastructure to integrate incoming renewable energy and sustain the power sector's trajectory towards emissions reduction goals.

 

 

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Court Sees If Church Solar Panels Break Electricity Monopoly

NC WARN Solar Case tests third-party solar rights as North Carolina Supreme Court reviews Utilities Commission fines over a Greensboro church's rooftop power deal, challenging Duke Energy's monopoly, onsite electricity sales, and potential rate impacts.

 

Key Points

A North Carolina Supreme Court test of third-party solar could weaken Duke Energy's monopoly and change utility rules.

✅ NC Supreme Court weighs Utilities Commission penalty on NC WARN

✅ Case could permit onsite third-party solar sales statewide

✅ Outcome may pressure Duke Energy's monopoly and rates

 

North Carolina's highest court is taking up a case that could force new competition on the state's electricity monopolies.

The state Supreme Court on Tuesday will consider the Utilities Commission's decision to fine clean-energy advocacy group NC WARN for putting solar panels on a Greensboro church's rooftop and then charging it below-market rates for power.

The commission told NC WARN that it was producing electricity illegally and fined the group $60,000. The group said it was acting privately and appealed to the high court.

If the group prevails, it could put new pressure on Duke Energy's monopoly, which has seen an oversubscribed solar solicitation in recent procurements. State regulators say a ruling for NC WARN would allow companies to install solar equipment and sell power on site, shaving away customers and forcing Duke Energy to raise rates on everyone else.

#google#

That's because if NC WARN's deal with Faith Community Church is allowed, the precedent could open the door for others to lure away from Duke Energy, as debates over how solar owners are paid continue, "the customers with the highest profit potential, such as commercial and industrial customers with large energy needs and ample rooftop space," attorney Robert Josey Jr. wrote in a court filing.

Losing those power sales would force the country's No. 2 electricity company to make it up by charging remaining customers more to cover the cost of all of its power plants, transmission lines and repair crews, a dynamic echoed in New England's grid upgrade debates as solar grows, wrote Josey, an attorney for the Public Staff, the state's official utilities consumer advocate.

The dispute is whether NC WARN is producing electricity "for the public," which would mean it's intruding on the territory of the publicly regulated monopoly utility, or whether the move was allowed because it was a private power deal with the church alone.

 

NC WARN installed the church's power panels in 2015 as part of what it described as a test case, amid wider debates like Nova Scotia's delayed solar charge for customers, challenging Duke Energy's monopoly position to generate and sell electricity.

North Carolina was one of nine states that as of last year explicitly disallowed residential customers from buying electricity generated by solar panels on their roof from a third party that owns the system, even as Maryland opens solar subscriptions more broadly, according to the North Carolina Clean Energy Technology Center. State law allows purchased or leased solar panels, but not payments simply for the power they generate.

NC WARN's goals included "reducing the effects of Duke Energy's monopoly control that has such negative impacts on power bills, clean air and water, and climate change," the church's pastor, Rev. Nelson Johnson, said in a statement the same day the clean-energy group asked state regulators to clear the plan.

Instead, the North Carolina Utilities Commission ruled the arrangement violated the state's system of legal electricity monopolies and hit the group with nearly $60,000 in fines, which would be suspended if the church's payments were refunded with interest and the solar equipment donated. The group has set aside the money and will donate the gear if it loses the Supreme Court case, NC WARN Executive Director Jim Warren said.

NC WARN's three-year agreement saw the group mount a rooftop solar array for which the church would pay about half the average retail electricity price, state officials said. The agreement states plainly that it is not a contract for the sale or lease of the $20,000 solar system, the church never owns the panels, and the low electricity price means its payback for the equipment would take 60 years, Josey wrote.

"Clearly, the only thing of value (the church) is obtaining for its payments under this agreement is the electricity created," he wrote.

In court filings, the group's attorneys have stuck to the argument that NC WARN isn't selling to the public because the deal involved a single customer only.

The deal "is not open to any other member of the public ... A private, bargained-for contract under which only one party receives electricity is not a sale of electricity 'to or for the public,' " attorney Matthew Quinn wrote to the court.

 

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Electric Cars 101: How EV Motors Work, Tech Differences, and More

Electric Car Motors convert electricity to torque via rotor-stator magnetic fields, using AC/DC inverters, permanent magnets or induction designs; they power EV powertrains efficiently and enable regenerative braking for energy recovery and control.

 

Key Points

Electric car motors turn electrical energy into wheel torque using rotor-stator fields, inverters, and AC or DC control.

✅ AC induction, PMSM, BLDC, and reluctance architectures explained

✅ Inverters manage AC/DC, voltage, and motor speed via frequency

✅ Regenerative braking recovers energy and reduces wear

 

When was the last time you stopped to think about how electric cars actually work, especially if you're wondering whether to buy an electric car today? We superfans of the car biz have mostly developed a reasonable understanding of how combustion powertrains work. Most of us can visualize fuel and air entering a combustion chamber, exploding, pushing a piston down, and rotating a crankshaft that ultimately turns the wheels. We generally understand the differences between inline, flat, vee-shaped, and maybe even Wankel rotary combustion engines.

Mechanical engineering concepts such as these are comparatively easy to comprehend. But it's probably a fair bet to wager that only a minority of folks reading this can explain on a bar napkin exactly how invisible electrons turn a car's wheels or how a permanent-magnet motor differs from an AC induction one. Electrical engineering can seem like black magic and witchcraft to car nuts, so it's time to demystify this bold new world of electromobility, with the age of electric cars arriving ahead of schedule.

How Electric Cars Work: Motors
It has to do with magnetism and the natural interplay between electric fields and magnetic fields. When an electrical circuit closes allowing electrons to move along a wire, those moving electrons generate an electromagnetic field complete with a north and a south pole. When this happens in the presence of another magnetic field—either from a different batch of speeding electrons or from Wile E. Coyote's giant ACME horseshoe magnet, those opposite poles attract, and like poles repel each other.


 

Electric motors work by mounting one set of magnets or electromagnets to a shaft and another set to a housing surrounding that shaft. By periodically reversing the polarity (swapping the north and south poles) of one set of electromagnets, the motor leverages these attracting and repelling forces to rotate the shaft, thereby converting electricity into torque and ultimately turning the wheels, in a sector where the electric motor market is growing rapidly worldwide. Conversely—as in the case of regenerative braking—these magnetic/electromagnetic forces can transform motion back into electricity.

How Electric Cars Work: AC Or DC?
The electricity supplied to your home arrives as alternating current (AC), and bidirectional charging means EVs can power homes for days as needed, so-called because the north/south or plus/minus polarity of the power changes (alternates) 60 times per second. (That is, in the United States and other countries operating at 110 volts; countries with a 220-volt standard typically use 50-Hz AC.) Direct current (DC) is what goes into and comes out of the + and - poles of every battery. As noted above, motors require alternating current to spin. Without it, the electromagnetic force would simply lock their north and south poles together. It's the cycle of continually switching north and south that keeps a motor spinning.


 

Today's electric cars are designed to manage both AC and DC energy on board. The battery stores and dispenses DC current, but again, the motor needs AC. When recharging the battery, and with increasing grid coordination enabling flexibility, the energy comes into the onboard charger as AC current during Level 1 and Level 2 charging and as DC high-voltage current on Level 3 "fast chargers." Sophisticated power electronics (which we will not attempt to explain here) handle the multiple onboard AC/DC conversions while stepping the voltage up and down from 100 to 800 volts of charging power to battery/motor system voltages of 350-800 volts to the many vehicle lighting, infotainment, and chassis functions that require 12-48-volt DC electricity.

How Electric Cars Work: What Types Of Motors?
DC Motor (Brushed): Yes, we just said AC makes the motor go around, and these old-style motors that powered early EVs of the 1900s are no different. DC current from the battery is delivered to the rotor windings via spring-loaded "brushes" of carbon or lead that energize spinning contacts connected to wire windings. Every few degrees of rotation, the brushes energize a new set of contacts; this continually reverses the polarity of the electromagnet on the rotor as the motor shaft turns. (This ring of contacts is known as the commutator).

The housing surrounding the rotor's electromagnetic windings typically features permanent magnets. (A "series DC" or so-called "universal motor" may use an electromagnetic stator.) Advantages are low initial cost, high reliability, and ease of motor control. Varying the voltage regulates the motor's speed, while changing the current controls its torque. Disadvantages include a lower lifespan and the cost of maintaining the brushes and contacts. This motor is seldom used in transportation today, save for some Indian railway locomotives.

Brushless DC Motor (BLDC): The brushes and their maintenance are eliminated by moving the permanent magnets to the rotor, placing the electromagnets on the stator (housing), and using an external motor controller to alternately switch the various field windings from plus to minus, thereby generating the rotating magnetic field.

Advantages are a long lifespan, low maintenance, and high efficiency. Disadvantages are higher initial cost and more complicated motor speed controllers that typically require three Hall-effect sensors to get the stator-winding current phased correctly. That switching of the stator windings can result in "torque ripple"—periodic increases and decreases in the delivered torque. This type of motor is popular for smaller vehicles like electric bikes and scooters, and it's used in some ancillary automotive applications like electric power steering assist.


 

Permanent-Magnet Synchronous Motor (PMSM): Physically, the BLDC and PMSM motors look nearly identical. Both feature permanent magnets on the rotor and field windings in the stator. The key difference is that instead of using DC current and switching various windings on and off periodically to spin the permanent magnets, the PMSM functions on continuous sinusoidal AC current. This means it suffers no torque ripple and needs only one Hall-effect sensor to determine rotor speed and position, so it's more efficient and quieter.

The word "synchronous" indicates the rotor spins at the same speed as the magnetic field in the windings. Its big advantages are its power density and strong starting torque. A main disadvantage of any motor with spinning permanent magnets is that it creates "back electromotive force" (EMF) when not powered at speed, which causes drag and heat that can demagnetize the motor. This motor type also sees some duty in power steering and brake systems, but it has become the motor design of choice in most of today's battery electric and hybrid vehicles.


 

Note that most permanent-magnet motors of all kinds orient their north-south axis perpendicular to the output shaft. This generates "radial (magnetic) flux." A new class of "axial flux" motors orients the magnets' N-S axes parallel to the shaft, usually on pairs of discs sandwiching stationary stator windings in between. The compact, high-torque axial flux orientation of these so-called "pancake motors" can be applied to either BLDC or PMSM type motors.


 

AC Induction: For this motor, we toss out the permanent magnets on the rotor (and their increasingly scarce rare earth materials) and keep the AC current flowing through stator windings as in the PMSM motor above.

Standing in for the magnets is a concept Nikola Tesla patented in 1888: As AC current flows through various windings in the stator, the windings generate a rotating field of magnetic flux. As these magnetic lines pass through perpendicular windings on a rotor, they induce an electric current. This then generates another magnetic force that induces the rotor to turn. Because this force is only induced when the magnetic field lines cross the rotor windings, the rotor will experience no torque or force if it rotates at the same (synchronous) speed as the rotating magnetic field.

This means AC induction motors are inherently asynchronous. Rotor speed is controlled by varying the alternating current's frequency. At light loads, the inverter controlling the motor can reduce voltage to reduce magnetic losses and improve efficiency. Depowering an induction motor during cruising when it isn't needed eliminates the drag created by a permanent-magnet motor, while dual-motor EVs using PMSM motors on both axles must always power all motors. Peak efficiency may be slightly greater for BLDC or PMSM designs, but AC induction motors often achieve higher average efficiency. Another small trade-off is slightly lower starting torque than PMSM. The GM EV1 of the mid-1990s and most Teslas have employed AC Induction motors, despite skepticism about an EV revolution in some quarters.


 

Reluctance Motor: Think of "reluctance" as magnetic resistance: the degree to which an object opposes magnetic flux. A reluctance motor's stator features multiple electromagnet poles—concentrated windings that form highly localized north or south poles. In a switched reluctance motor (SRM), the rotor is made of soft magnetic material such as laminated silicon steel, with multiple projections designed to interact with the stator's poles. The various electromagnet poles are turned on and off in much the same way the field windings in a BLDC motor are. Using an unequal number of stator and rotor poles ensures some poles are aligned (for minimum reluctance), while others are directly in between opposite poles (maximum reluctance). Switching the stator polarity then pulls the rotor around at an asynchronous speed.


 

A synchronous reluctance motor (SynRM) doesn't rely on this imbalance in the rotor and stator poles. Rather, SynRM motors feature a more distributed winding fed with a sinusoidal AC current as in a PMSM design, with speed regulated by a variable-frequency drive, and an elaborately shaped rotor with voids shaped like magnetic flux lines to optimize reluctance.

The latest trend is to place small permanent magnets (often simpler ferrite ones) in some of these voids to take advantage of both magnetic and reluctance torque while minimizing cost and the back EMF (or counter-electromotive force) high-speed inefficiencies that permanent-magnet motors suffer.

Advantages include lower cost, simplicity, and high efficiency. Disadvantages can include noise and torque ripple (especially for switched reluctance motors). Toyota introduced an internal permanent-magnet synchronous reluctance motor (IPM SynRM) on the Prius, and Tesla now pairs one such motor with an AC induction motor on its Dual Motor models. Tesla also uses IPM SynRM as the single motor for its rear-drive models.


 

Electric motors may never sing like a small-block or a flat-plane crank Ferrari. But maybe, a decade or so from now, we'll regard the Tesla Plaid powertrain as fondly as we do those engines, even as industry leaders note that mainstream adoption faces hurdles, and every car lover will be able to describe in intimate detail what kind of motors it uses.
 

 

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Green energy in 2023: Clean grids, Alberta, batteries areas to watch

Canada 2023 Clean Energy Outlook highlights decarbonization, renewables, a net-zero grid by 2035, hydrogen, energy storage, EV mandates, carbon pricing, and critical minerals, aligning with IRA incentives and provincial policies to accelerate the transition.

 

Key Points

A concise overview of Canada's 2023 path to net-zero: renewables, clean grids, storage, EVs, and hydrogen.

✅ Net-zero electricity regulations target 2035

✅ Alberta leads PPAs and renewables via deregulated markets

✅ Tax credits boost storage, hydrogen, EVs, and critical minerals

 

The year 2022 may go down as the most successful one yet for climate action. It was marked by monumental shifts in energy policy from governments, two COP meetings and heightened awareness of the private sector's duty to act.

In the U.S., the Inflation Reduction Act (IRA) was the largest federal legislation to tackle climate change, injecting $369 billion of tax credits and incentives for clean energy, Biden's EV agenda and carbon capture, energy storage, energy efficiency and research.

The European Union accelerated its green policies to transition away from fossil fuels and overhauled its carbon market. China and India made strides on clean energy and strengthened climate policies. The International Energy Agency made its largest revision yet as renewables continued to proliferate.

The U.S. ratified the Kigali Amendment, one of the strongest global climate policies to date.

Canada was no different. The 2022 Fall Economic Statement was announced to respond to the IRA, offering an investment tax credit for renewables, clean technology and green hydrogen alongside the Canada Growth Fund. The federal government also proposed a 2035 deadline for clean electrical grids and a federal zero-emissions vehicle (ZEV) sales mandate for light-duty vehicles.

With the momentum set, more action is promised in 2023: Canadian governments are expected to unveil firmer details for the decarbonization of electricity grids to meet 2035 deadlines; Alberta is poised to be an unlikely leader in clean energy.

Greater attention will be put on energy storage and critical minerals. Even an expected economic downturn is unlikely to stop the ball that is rolling.

Shane Doig, the head of energy and natural resources at KPMG in Canada, said events in 2022 demonstrated the complexity of the energy transformation and opened “a more balanced conversation around how Canada can transition to a lower carbon footprint, whilst balancing the need for affordable, readily available electricity.”


Expect further developments on clean electricity
2023 shapes up as a crucial year for Canada’s clean electricity grid.

The federal government announced it will pursue a net-zero electricity grid by 2035 under the Clean Electricity Regulations (CER) framework.

It requires mass renewable and clean energy adoption, phasing out fossil fuel electricity generation, rapid electrification and upgrading transmission and storage while accommodating growth in electricity demand.

The first regulations for consultation are expected early in 2023. The plans will lay out pollution regulations and costs for generating assets to accelerate clean energy adoption, according to Evan Pivnick, the clean energy program manager of Clean Energy Canada.

The Independent Energy System Operator of Ontario (IESO) recently published a three-part report suggesting a net-zero conversion for Ontario could cost $400 billion over 25 years, even as the province weighs an electricity market reshuffle to keep up with increasing electricity demand.

Power Utility released research by The Atmospheric Fund that suggests Ontario could reach a net-zero grid by 2035 across various scenarios, despite ongoing debates about Ontario's hydro plan and rate design.

Dale Beguin, executive vice president at the Canadian Climate Institute, said in 2023 he hopes to see more provincial regulators and governments send “strong signals to the utilities” that a pathway to net-zero is realistic.

He recounted increasing talk from investors in facilities such as automotive plants and steel mills who want clean electricity guarantees before making investments. “Clean energy is a comparative advantage,” he said, which puts the imperative on organizations like the IESO to lay out plans for bigger, cleaner and flexible grids.

Beguin and Pivnick said they are watching British Columbia closely because of a government mandate letter setting a climate-aligned energy framework and a new mandate for the British Columbia Utilities Commission. Pivnick said there may be lessons to be drawn for other jurisdictions.

 

Alberta’s unlikely rise as a clean energy leader
Though Alberta sits at the heart of Canada’s oil and gas industry and at the core of political resistance to climate policy, it has emerged as a front runner in renewables adoption.

Billion of dollars for wind and solar projects have flowed into Alberta, as the province charts a path to clean electricity with large-scale projects.

Pivnick said an “underappreciated story” is how Alberta leaned into renewables through its “unique market.” Alberta leads in renewables and power purchase agreements because of its deregulated electricity market.

Unlike most provinces, Alberta enables companies to go directly to solar and wind developers to strike deals, a model reinforced under Kenney's electricity policies in recent years, rather than through utilities. It incentivizes private investment, lowers costs and helps meet increasing demand, which Nagwan Al-Guneid, the director of the Business Renewables Centre - Canada at the Pembina Institute, said is “is the No. 1 reason we see this boom in renewables in Alberta.”

Beguin noted Alberta’s innovative ‘reverse auctions,’ where the province sets a competitive bidding process to provide electricity. It ended up making electricity “way cheaper” due to the economic competitiveness of renewables, while Alberta profited and added clean energy to its grid.

In 2019, the Business Renewables Centre-Canada established a target of 2 GW of renewable energy deals by 2025. The target was exceeded in 2022, which led to a revised goal for 10 GW of renewables by 2030.

Al-Guneid wants to see other jurisdictions help more companies buy renewables. She does not universally prescribe deregulation, however, as other mechanisms such as sleeving exist.

Alberta will update its industrial carbon pricing in 2023, requiring large emitters to pay $65 per tonne of carbon dioxide. The fee climbs $15 per tonne each year until it reaches $175 per tonne in 2030. Al-Guneid said as the tax increases, demand for renewable energy certificates will also increase in Alberta.

Pivnick noted Alberta will have an election in 2023, which could have ramifications for energy policy.

 

Batteries and EV leadership
Manufacturing clean energy equipment, batteries and storage requires enormous quantities of minerals. With the 2022 Fall Economic Statement and the Critical Minerals Strategy, Canada is taking important steps to lead on this front.

Pivnick pointed to battery supply chain investments in Ontario and Quebec as part of Canada’s shift from “a fuel-based (economy) to a materials-based economy” to provide materials necessary for wind turbines and solar panels. The Strategy showed an understanding Canada has a major role to meet its allies’ needs for critical minerals, whether it’s the resources or supply chains.

There is also an opportunity for Canada to forge ahead on energy storage. The Fall Economic Statement proposes a 30 per cent tax credit for investments into energy storage. Pivnick suggested Canada invest further into research and development to explore innovations like green hydrogen and pump storage.

Doig believes Canada is “well poised” for batteries, both in terms of the technology and sustainable mining of minerals like cobalt, lithium and copper. He is bullish for Canada’s electrification based on its clean energy use and increased spending on renewables and energy storage.

He said the federal ZEV mandate will drive increased demand for the power, utilities, and oil and gas industries to respond.

The majority of gas stations, which are owned by the nation’s energy industry, will need to be converted into EV charging stations.

 

Offsetting a recession 
One challenge will be a poor economic forecast in the near term. A short "technical recession" is expected in 2023.

Inflation remains stubbornly high, which has forced the Bank of Canada to hike interest rates. The conditions will not leave any industry unscathed, but Doig said Canada's decarbonization is unlikely to be halted.

“Whilst a recession would slow things down, the concern around energy security definitely helps offset that concern,” he said.

Amid rising trade frictions and tariff threats, energy security is top of mind for governments and private organizations, accelerating the shift to renewables.

Doig said there is a general feeling a recession would be short-lived, meaning it would be unlikely to impact long-term projects in hydrogen, liquified natural gas, carbon capture and wind and solar.

 

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