France reaffirms faith in nuclear power

By International Herald Tribune


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It looks like an ordinary building site, but for the two massive, rounded concrete shells looming above the ocean, like dusty mushrooms.

Here on the Normandy coast, France is building its newest nuclear reactor, the first in 10 years, costing $5.1 billion. But already, President Nicolas Sarkozy has announced that France will build another like it.

Flamanville is a vivid example of the French choice for nuclear power, made in the late 1950s by Charles de Gaulle, intensified during the oil shocks of the 1970s and maintained despite the nightmarish nuclear accidents of Three Mile Island and Chernobyl.

Nuclear power provides 77 percent of France's electricity, according to the government, and relatively few public doubts are expressed in a country with little coal, oil or natural gas.

With the wildly fluctuating cost of oil, anxiety over global warming from burning fossil fuels and new concerns about the impact of biofuels on the price of food for the poor, nuclear energy is getting a second look in countries like the United States and Britain. Even Germany, committed to phasing out nuclear power by 2021, is debating whether to change its mind.

France is way ahead. Électricité de France, or EDF, is in talks to buy British Energy, for about $24 billion, to renovate Britain's nuclear plants and build new ones. The French have already contracted to build a third-generation European Pressurized Reactor of the Flamanville type — the world's safest and most powerful — in Abu Dhabi and China.

There is pride in French exceptionalism and in the technical skill that has produced an industry with no major accidents. In a recent op-ed article in Le Figaro, for example, Yves Thréard boasted: "France hasn't any oil, but she knew how to exploit a rich idea. In the whirlwind of globalization, civil nuclear power became a weapon, commercial and political, that allowed the country to remain at the avant-garde in the concert of nations."

A senior aide to Jean-Louis Borloo, the minister of ecology, sustainable development and planning, said that France "sees a wide trend developing" toward more use of nuclear energy.

"A lot of countries realize that with the rising price of fossil fuels and energy, and the climate emergency, nuclear can be part of the solution," said the aide, who spoke anonymously under the rules of his ministry.

He said that France's choice for a "closed fuel cycle" — reprocessing used nuclear fuel to recover plutonium made in the reactors so it can be reused — was safer. "This way, nuclear energy can bring a lot — it's CO2-free energy."

Sarkozy said that each European Pressurized Reactor that "replaces a gas-powered electricity plant saves two billion cubic meters of gas each year, and each EPR replacing a coal plant means cutting 11 million tons of CO2."

France generates half of its own total energy, up from 23 percent in 1973, despite increased consumption.

Electrical power generation accounts for only 10 percent of France's greenhouse gases, compared with an average of 40 percent in other industrialized countries, according to EDF.

France has 58 operating nuclear reactors, the highest number of any nation besides the United States. In America, where nuclear construction has been moribund, there is also new interest. At the moment, 19.4 percent of the electricity generated in the United States is from 104 nuclear plants, according to the Department of Energy.

The Nuclear Regulatory Agency has in hand or expects applications to build 34 reactors, of which seven are European pressurized water reactors of the Flamanville type — and, unlike current American reactors, allow output to vary to meet fluctuating demand.

The Flamanville reactor is based on a French-German design, which itself is based on an earlier Westinghouse design. EDF has an American partner, Constellation Energy, to sell the new model as a joint venture called UniStar Nuclear, which has already ordered some of the larger parts for one reactor. Ironically, its main competitor is Westinghouse, now owned by Toshiba.

For all the happy talk in France, however, there are continuing doubts and confusion about nuclear power, accentuated by a series of accidents and alerts in July. At a nuclear plant in Tricastin, in Provence, 163 pounds of untreated uranium in liquid leaked from a faulty tank during a draining operation, seeping into the ground and then into rivers that flow into the Rhône.

While the two-year-old Authority for Nuclear Security, an independent body overseeing civilian nuclear activities, called it a category one (out of seven) incident that posed no health risk, the local prefect banned fishing, irrigation, swimming and the use of well water. The ban lasted 14 days, and the government criticized Areva, the nuclear group that is mostly state-owned, for not informing local authorities quickly or adequately. The treatment station, which was old, was being replaced, and remains shut.

Other minor accidents occurred in quick succession: a burst underground pipe at another site north of Tricastin, which leaked a tiny amount of uranium inside plant grounds, and then another accident at Tricastin itself, when 100 employees were contaminated by radioactive particles that escaped from a pipe.

The government, Areva and EDF have played down the accidents. Borloo said there were 86 category-one nuclear incidents in France in 2007 and 114 in 2006. Borloo's aide, pointing to the Authority for Nuclear Security, said the Tricastin "microevent" showed that "our system of security is extremely responsive and transparent, and that the media and public opinion needed a training period to understand how the system of nuclear security works in France."

Still, there is continuing nervousness. Sales of bottled water increased, and even a nearby appellation of local wine, Côteaux du Tricastin, is exploring whether to change its name, according to Henri Bour, who runs the local wine council.

A prominent French anti-nuclear lobby, Sortir du Nucléaire, is pressing to phase out nuclear power, which it considers too dangerous and too expensive because of the need to manage nuclear waste. The group wants a "sustainable transition" to renewable energy options like solar, hydro and wind power. Last year, on the 21st anniversary of the Chernobyl meltdown, 30 protesters at Flamanville blocked entrances and chained themselves to cranes.

There have also been some construction issues. In April, the Authority for Nuclear Safety criticized some of the welds and the quality of the concrete work at Flamanville, but work resumed in June. Philippe Leynié, the site manager here for EDF, said the problem involved missing pins on the metal rebar and was not serious.

Nonetheless, an IFOP opinion poll conducted for Le Monde after the Tricastin leaks showed that 67 percent of the French considered it vital to keep nuclear power in the country's energy mix, compared with 52 percent in 2002. Only 27 percent judged the risks of nuclear energy to be the most worrying, compared with 50 percent who thought global warming was the predominant risk. In 2002, 33 percent worried most about nuclear risks and only 20 percent about global warming.

For Flamanville, though, a village of 1,780 people, nuclear power has re-energized the town. There are no pretty beaches here, just granite cliffs above a cold sea. For hundreds of years, the village lived off the granite, cutting and selling it, shipping it first by boat, then by railroad. Flamanville granite, said Mayor Patrick Fauchon, was used to pave the Place de la Concorde in Paris.

But by the middle of the 19th century it became too expensive compared with other sources, and the village survived by digging iron from an undersea mine, said Fauchon, who has been mayor since 1983. "It was always a company town," he said.

But the mine closed in 1962, and the population of the village dropped to 1,150 people. When the idea of a nuclear plant arose, in 1975, there was considerable debate. But residents voted for the nuclear plant, which meant new jobs.

The granite cliffs and cold sea, while not hospitable to bathers, were ideal for these nuclear reactors, which need a hard foundation and access to plentiful cold water.

Now, after so many years, a generation of workers here has already retired from the nuclear industry.

"At the regional level, some towns accept having nuclear plants and others oil refineries," Fauchon said. "I don't ask Bretons if they're happy about having pigsties and raising pigs, which creates another source of pollution."

Still, he thinks these days of the effect on towns that are losing their regiments as France's military modernizes. "At least when we speak of energy, it's a permanent need," Fauchon said. "When we speak of an industrial tool with a lifespan of 60 years, we have economic activity for two generations."

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Edmonton's 1st electric bus hits city streets

Edmonton Electric Buses usher in zero-emission public transit with Proterra battery-electric vehicles, 350 km range, quiet rides, winter-ready performance, and overhead depot chargers, as ETS rolls out Canada's largest electric fleet across city routes.

 

Key Points

Battery-electric ETS vehicles from Proterra deliver zero-emission service, 350 km range, and winter-capable operation.

✅ Up to 350 km per charge; overhead depot fast chargers

✅ Quiet, smooth rides; zero tailpipe emissions

✅ Winter-tested performance across ETS routes

 

Your next trip on Edmonton transit could be a historical one as the city’s first battery-electric bus is now on city streets, marking a milestone for Edmonton Transit Service, and neighboring St. Albert has also introduced electric buses as part of regional goals.

“Transit has been around since 1908 in Edmonton. We had some really small buses, we had some trolley buses several years later. It’s a special day in history today,” Ryan Birch, acting director of transit operations, said. “It’s a fresh experience… quiet, smooth riding. It’s going to be absolutely wonderful.”

In a news release, Mayor Don Iveson called it the largest purchase of electric buses in Canadian history, while North America's largest electric bus fleet operates in Toronto today, and Metro Vancouver has buses on the road as well this year.

“Electric buses are a major component of the future of public transit in our city and across Canada.”

As of Tuesday, 21 of the 40 electric buses had arrived in the city, and the Toronto Transit Commission has introduced battery-electric buses in Toronto as well this year.

“We’re going to start rolling these out with four or five buses per day until we’ve got all the buses in stock rolled out. On Wednesday we will have three or four buses out,” Birch said.

The remaining 19 are scheduled to arrive in the fall.

The City of Edmonton ordered the battery-electric buses from Proterra, an electric bus supplier, while Montreal's STM has begun rolling out electric buses of its own recently.

The fleet can travel up to 350 kilometres on a single charge and the batteries work in all weather conditions, including Edmonton’s harsh winters, and electric school buses in B.C. have also taken to the roads in cold climates recently.

In 2015, ETS winter tested a few electric buses to see if the technology would be suitable for the city’s climate and geography amid barriers to wider adoption that many agencies consider.

“These buses are designed to handle most of our routes,” Birch said. “We are confident they will be able to stand up to what we expect of them.”

ETS is the first transit agency in North America to have overhead chargers installed inside transit facilities, which helps to save floor space.

 

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New Electricity Auctions Will Drive Down Costs for Ontario's Consumers

IESO Capacity Auctions will competitively procure resources for Ontario electricity needs, boosting reliability and resource adequacy through market-based bidding, enabling demand response, energy storage, and flexible supply to meet changing load and regional grid conditions.

 

Key Points

A competitive, technology-neutral auction buys capacity at lowest cost to keep Ontario's grid reliable and flexible.

✅ Market-based procurement reduces system costs.

✅ Enables demand response, storage, and hybrid resources.

✅ Increases flexibility and regional reliability in Ontario.

 

The Independent Electricity System Operator (IESO) is introducing changes to Ontario's electricity system that will help save Ontarians about $3.4 billion over a 10-year period. The changes include holding annual capacity auctions to acquire electricity resources at lowest cost that can be called upon when and where they are needed to meet Ontario electricity needs. 

Today's announcement marks the release of a high level design for future auctions, with changes for electricity consumers expected as the first is set to be held in late 2022.

"These auctions will specify how much electricity we need, and introduce a competitive process to determine who can meet that need. It's a competition among all eligible resources, and it's the Ontario consumer, including industrial electricity ratepayers, who benefits through lower costs and a more flexible system better able to respond to changing demand and supply conditions," says IESO President and CEO Peter Gregg.

In the past decade, electricity supply was typically acquired through very prescriptive means with defined targets for specific types of resources such as wind and solar, and secured through 20-year contracts.  While these long-term commitments helped Ontario transform its generation fleet over the last decade, electricity cost allocation also played a role, but longer term contracts provide limited flexibility in dealing with unexpected changes in the power system. 

"Imagine signing a 20-year contract for your cable TV service. In five years' time, electricity rates could be lower, new competitors may have entered the market, or entirely new and innovative platforms and services like Netflix may have emerged. You miss out on opportunities for improvement by being locked-in," says Gregg.

Provincial electricity demand has traditionally fluctuated over time due to factors like economic growth, conservation and the introduction of generating resources on local distribution systems, with occasional issues such as phantom demand affecting customers' costs as well. Technological changes are adding another layer of uncertainty to future demand as electric vehicles, energy storage and low-cost solar panels become more common.

"Our planners do their best to forecast electricity demand, but the truth is there's no such thing as certainty in electricity planning. That's why flexibility is so important. We don't want Ontarians to have to pay more on the typical Ontario electricity bill for electricity resources than are needed to ensure a reliable power system that can continue to meet Ontario's needs," says IESO Vice President and COO Leonard Kula.

 

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Romania enhances safety at Cernavoda, IAEA reports

IAEA OSART Cernavoda highlights strengthened operational safety at Romania’s Cernavoda NPP, citing improved maintenance practices, simulator training, and deficiency reporting, with ongoing actions on spare parts procurement, procedure updates, and chemical control for nuclear compliance.

 

Key Points

An IAEA follow-up mission confirming improved operational safety at Cernavoda NPP, with remaining actions tracked.

✅ Enhanced simulator training and crew performance

✅ Improved field deficiency identification and reporting

✅ Ongoing upgrades to procedures, spares, and chemical control

 

The International Atomic Energy Agency (IAEA) said yesterday that the operator of Romania’s Cernavoda nuclear power plant had demonstrated "strengthened operational safety" by addressing the findings of an initial IAEA review in 2016. The Operational Safety Review Team (OSART) concluded a five-day follow-up mission on 8 March to the Cernavoda plant, which is on the Danube-Black Sea Canal, about 160 km from Bucharest.

The plant's two 706 MWe CANDU pressurised heavy water reactors, reflecting Canadian nuclear projects, came online in 1996 and 2007, respectively.

The OSART team was led by Fuming Jiang, a senior nuclear safety officer at the IAEA, which recently commended China's nuclear security in separate assessments.

"We saw improvements in key areas, such as the procurement of important spare parts, the identification and reporting of some deficiencies, and some maintenance work practices, as evidenced by relevant performance indicators," Jiang said, noting milestones at nuclear projects worldwide this year.

The team observed that several findings from the 2016 review had been fully addressed, including: enhanced operator crew performance during simulator training; better identification and reporting of deficiencies in the field; and improvement in maintenance work practices.

More time is required, it said, to fully implement some actions, including: further improvements in the procurement of important spare parts with relevance to safety; further enhancement in the revision and update of some operating procedures, drawing on lessons from Pickering NGS life extensions undertaken in Ontario; and control and labelling of some plant chemicals.

Dan Bigu, site vice president of Cernavoda NPP, said the 2016 mission had "proven to be very beneficial", adding that the current follow-up mission would "provide further catalyst support to our journey to nuclear excellence".

The team provided a draft report of the mission to the plant's management and a final report will be submitted to the Romanian government, which recently moved to terminate talks with a Chinese partner on a separate nuclear project, within three months.

OSART missions aim to improve operational safety by objectively assessing safety performance, even as the agency reports mines at Ukraine's Zaporizhzhia plant amid ongoing risks, using the IAEA's safety standards and proposing recommendations and suggestions for improvement where appropriate. The follow-up missions are standard components of the OSART programme and, as the IAEA has warned of risks from attacks on Ukraine's power grids, are typically conducted within two years of the initial mission.

 

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California Legislators Prepare Vote to Crack Down on Utility Spending

California Utility Spending Bill scrutinizes how ratepayer funds are used by utilities, targeting lobbying, advertising, wildfire prevention cost pass-throughs, and CPUC oversight to curb high electricity bills and increase accountability and transparency statewide.

 

Key Points

Legislation restricting utilities from using ratepayer money for lobbying and ads, with stronger CPUC oversight.

✅ Bans ratepayer-funded lobbying and political advertising

✅ Expands prohibited utility communications and influence spending

✅ Aims to curb bills, boost transparency, and CPUC accountability

 

California's legislators are about to vote on a bill that would impose stricter regulations on how utility companies spend the money they collect from ratepayers. This legislation directly responds to the growing discontent among Californians who are already grappling with high electricity bills, as Californians ask why electricity prices are soaring amid wildfire prevention efforts.

Consumer rights groups have been vehemently critical of how utilities have been allocating customer funds, amid growing calls for regulatory action from state officials. They allege that a substantial portion of this money is being funnelled into lobbying efforts and advertising campaigns that yield no direct benefits for the customers themselves.

The proposed bill would significantly broaden the definition of what constitutes prohibited advertising and political influence activities on the part of utility companies, separate from income-based fixed electricity charges proposals that affect rate design. This would effectively restrict the ways in which utilities can utilize customer funds for such purposes.

While consumer advocacy groups have favored the legislation, it has drawn opposition from utility companies and some labor unions, as lawmakers weigh overturning income-based utility charges in parallel debates. Opponents contend that it would hinder utilities' ability to communicate effectively with their customers and advocate for their interests. Additionally, they express concerns that the bill could result in job losses within the utility sector.

The vote on the bill is expected to take place on Monday. The outcome of the vote is uncertain, but it is sure to be a closely watched development for Californians struggling with the burden of high electricity bills, with many wondering about major changes to their electric bills in the near term.

 

California's Electricity Rates: A Burden for Residents

A recent report by the California Public Utilities Commission (CPUC) revealed that the average Californian household spends a significantly higher amount on electricity compared to the national average. This disparity in electricity rates can be attributed to a number of factors, including the financial costs associated with wildfire prevention measures, investments in renewable energy infrastructure, and maintenance of aging electrical grids, even as the state considers revamping electricity rates to clean the grid.

 

Examples of Utility Company Spending that Raise Concerns

Consumer rights groups have specifically highlighted instances where utility companies have used customer money to fund lavish executive compensation packages, sponsor professional sports teams, and finance political campaigns. They argue that these expenditures do not provide any tangible benefits to ratepayers and should not be funded through customer bills.

 

The Need for Accountability and Prioritization

Proponents of the bill believe that the legislation is necessary to ensure that utility companies are held accountable for how they spend customer funds. They believe that the stricter regulations would compel utilities to prioritize investments that directly improve the quality and reliability of electricity services for Californians, alongside discussions of income-based flat-fee utility bills that could reshape rate structures.

The impending vote on the bill underscores the ongoing tension between the need for reliable electricity services and the desire to keep utility rates affordable for Californians. The outcome of the vote is likely to have a significant impact on how utility companies operate in the state and how much Californians pay for their electricity.

 

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Cryptocurrency firm in Plattsburgh fights $1 million electric charge

Coinmint Plattsburgh Dispute spotlights cryptocurrency mining, hydropower electricity rates, a $1M security deposit, Public Service Commission rulings, municipal utility policies, and seasonal migration to Massena data centers as Bitcoin price volatility pressures operations.

 

Key Points

Legal and energy-cost dispute over crypto mining, a $1,019,503 deposit, and operations in Plattsburgh and Massena.

✅ PSC allows higher rates and requires large security deposits.

✅ Winter electricity spikes drove a $1M deposit calculation.

✅ Coinmint shifted capacity to Massena data centers.

 

A few years ago, there was a lot of buzz about the North Country becoming the next Silicon Valley of cryptocurrency, even as Maine debated a 145-mile line that could reshape regional power flows. One of the companies to flock here was Coinmint. The cryptomining company set up shop in Plattsburgh in 2017 and declared its intentions to be a good citizen.

Today, Coinmint is fighting a legal battle to avoid paying the city’s electric utility more than $1 million owed for a security deposit. In addition to that dispute, a local property manager says the firm was evicted from one of its Plattsburgh locations.

Companies like Coinmint chose to come to the North Country because of the relatively low electricity prices here, thanks in large part to the hydropower dam on the St. Lawrence River in Massena, and regionally, projects such as the disputed electricity corridor have drawn attention to transmission costs and access. Coinmint operates its North Country Data Center facilities in Plattsburgh and Massena. In both locations, racks of computer servers perform complex calculations to generate cryptocurrency, such as bitcoin.

When cryptomining began to take off in Plattsburgh, the cost of one bitcoin was skyrocketing. That brought hype around the possibility of big business and job creation in the North Country. But cryptomininers like Coinmint were using massive amounts of energy in the winter of 2017-2018, and that season, electric bills of everyday Plattsburgh residents spiked.

Many cryptomining firms operate in a state of flux, beholden to the price of Bitcoin and other cryptocurrencies, even as the end to the 'war on coal' declaration did little to change utilities' choices. When the price of one bitcoin hit $20,000 in 2017, it fell by 30% just days later. That’s one reason why the price of electricity is so critical for companies like Coinmint to turn a profit. 

Plattsburgh puts the brakes on “cryptocurrency mining”
In early 2018, Plattsburgh passed a moratorium on cryptocurrency mining operations, after residents complained of higher-than-usual electric bills.

“Your electric bill’s $100, then it’s at $130. Why? It’s because these guys that are mining the bitcoins are riding into town, taking advantage of a situation,” said resident Andrew Golt during a 2018 public hearing.

Coinmint aimed to assuage the worries of residents and other businesses. “At the end of the day we want to be a good citizen in whatever communities we’re in,” Coinmint spokesman Kyle Carlton told NCPR at that 2018 meeting.

“We’re open to working with those communities to figure out whatever solutions are going to work.”

The ban was lifted in Feb. 2019. However, since it didn’t apply to companies that were already mining cryptocurrency in Plattsburgh, Coinmint has operated in the city all along.

Coinmint challenges attempt to protect ratepayers
New rules passed by the New York Public Service Commission in March 2018 allow municipal power authorities including Plattsburgh’s to charge big energy users such as Coinmint higher electricity rates, amid customer backlash in other utility deals. The new rules also require them to put down a security deposit to ensure their bills get paid.

But Coinmint disputes that deposit charge. The company has been embroiled in a legal fight for nearly a year against Plattsburgh Municipal Lighting Department (PMLD) in an attempt to avoid paying the electric utility’s security deposit bill of $1,019,503. That bill is based on an estimate of what would cover two months of electricity use if a company were to leave town without paying its electric bills.

Coinmint would not discuss the dispute on the record with NCPR. Legal documents show the firm argues the deposit charge is inflated, based on a flawed calculation resulting in a charge hundreds of thousands of dollars higher than what it should be.

“Essentially they’re arguing that they should only have to put up some average of their monthly bills without accounting for the fact that winter bills are significantly higher than the average,” said Ken Podolny, an attorney representing the Plattsburgh utility.

The company took legal action in February 2019 against PMLD in the hopes New York’s energy regulator, the Public Service Commission, would agree with Coinmint that the deposit charge was too high. An informal commission hearing officer disagreed, and ruled in October the charge was calculated correctly.

Coinmint appealed the ruling in November and a hearing on the appeal could come as soon as February.

Less than a week after Coinmint lost its initial challenge of the deposit charge, the company made a splashy announcement trumpeting its plans to “migrate its Plattsburgh, New York infrastructure to its Massena, New York location for the 2019-2020 winter season.”

The announcement made no mention of the appeal or the recent ruling against Coinmint. The company attributed its new plan to “exceptionally-high” electricity rates in Plattsburgh, as hydropower transmission projects elsewhere in New England faced their own controversies. 

"We recognize some in the Plattsburgh community have blamed our operation for pushing rates higher for everyone so, while we disagree with that assessment, we hope this seasonal migration will have a positive impact on rates for all our neighbors,” said Coinmint cofounder Prieur Leary in the press statement.

“In the event that doesn't happen, we trust the community will look for the real answers for these high costs." Prieur Leary has since been removed from the corporate team page on the company’s website.

The company still operates in Plattsburgh at one of its locations in the city. As for staff, while at least two Coinmint employees have moved from Plattsburgh to Massena, where the company operates a data center inside a former Alcoa aluminum plant, it is unclear how many people in total have made the move.

Coinmint left its second Plattsburgh location in 2019. The company would not discuss that move on the record, yet the circumstances of the departure are murky.

The local property manager of the industrial park site told NCPR, “I have no comment on our evicted tenant Coinmint.” The property owner, California’s Karex Property Management Services, also would not comment regarding the situation, noting that “all staff have been told to not discuss anything regarding our past tenant Coinmint.”

Today, Bitcoin and other cryptocurrencies are worth a fraction of what they were back in 2017 when Coinmint came to the North Country, and now, amid a debate over Bitcoin's electricity use shaping market sentiment, the future of the entire industry here remains uncertain.

 

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National Grid and SSE to use electrical transformers to heat homes

Grid Transformer Waste Heat Recovery turns substations into neighborhood boilers, supplying district heating via heat networks, helping National Grid and SSE cut emissions, boost energy efficiency, and advance low carbon, net zero decarbonization.

 

Key Points

Grid Transformer Waste Heat Recovery captures substation heat for district heating, cutting emissions and gas use.

✅ Captures waste heat from National Grid transformers

✅ Feeds SSE district heat networks for nearby homes

✅ Cuts carbon, improves efficiency, aligns with net zero

 

Thousands of homes could soon be warmed by the heat from giant electricity grid transformers for the first time as part of new plans to harness “waste heat” and cut carbon emissions from home heating.

Trials are due to begin on how to capture the heat generated by transmission network transformers, owned by National Grid, to provide home heating for households connected to district heating networks operated by SSE.

Currently, hot air is vented from the giant substations to help cool the transformers that help to control the electricity running through National Grid’s high-voltage transmission lines.

However, if the trial succeeds, about 1,300 National Grid substations could soon act as neighbourhood “boilers”, piping water heated by the substations into nearby heating networks, and on into the thousands of homes that use SSE’s services.

“Electric power transformers generate huge amounts of heat as a byproduct when electricity flows through them. At the moment, this heat is just vented directly into the atmosphere and wasted,” said Nathan Sanders, the managing director of SSE Energy Solutions.

“This groundbreaking project aims to capture that waste heat and effectively turn transformers into community ‘boilers’ that serve local heat networks with a low- or even zero-carbon alternative to fossil-fuel-powered heat sources such as gas boilers, a shift akin to a gas-for-electricity swap in heating markets,” Sanders added.

Alexander Yanushkevich, National Grid’s innovation manager, said the scheme was “essential to achieve net zero” and a “great example of how, taking a whole-system approach, including power-to-gas in Europe precedents, the UK can lead the way in helping accelerate decarbonisation”.

The energy companies believe the scheme could initially reduce heat network carbon emissions by more than 40% compared with fossil gas systems. Once the UK’s electricity system is zero carbon, and with recent milestones where wind was the main source of UK electricity on the grid, the heating solution could play a big role in helping the UK meet its climate targets.

The first trials have begun at National Grid’s specially designed testing site at Deeside in Wales to establish how the waste heat could be used in district heating networks. Once complete, the intellectual property will be shared with smaller regional electricity network owners, which may choose to roll out schemes in their areas.

Tim O’Reilly, the head of strategy at National Grid, said: “We have 1,300 transmission transformers, but there’s no reason why you couldn’t apply this technology to smaller electricity network transformers, too, echoing moves to use more electricity for heat in colder regions.”

Once the trials are complete, National Grid and SSE will have a better idea of how many homes could be warmed using the heat generated by electricity network substations, O’Reilly said, and how the heat can be used in ways that complement virtual power plants for grid resilience.

“The heavier the [electricity] load, which typically reaches a peak at around teatime, the more heat energy the transformer will be able to produce, aligning with times when wind leads the power mix nationally. So it fits quite nicely to when people require heat in the evenings,” he added.

Other projects designed to capture waste heat to use in district heating schemes include trapping the heat generated on the Northern line of London’s tube network to warm homes in Islington, and harnessing the geothermal heat from disused mines for district heating networks in Durham.

Only between 2% and 3% of the UK is connected to a district heating network, but more networks are expected to emerge in the years ahead as the UK tries to reduce the carbon emissions from homes, alongside its nuclear power plans in the wider energy strategy.

 

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