Increased solar activity will play havoc with grid

European Grid Frequency Clock Slowdown has made appliance clocks run minutes behind as AC frequency drifts on the 50 Hz electricity grid, driven by a Kosovo-Serbia billing dispute and ENTSO-E monitored supply-demand imbalance.

Key Points

An EU-wide timing error where 50 Hz AC deviations slow appliance clocks due to Kosovo-Serbia grid imbalances.

✅ Clocks drifted up to six minutes across interconnected Europe

✅ Cause: unpaid power in N. Kosovo, contested by Serbia

✅ ENTSO-E reported 50 Hz deviations from supply-demand mismatch

Over the past couple of months, Europeans have noticed time slipping away from them. It’s not just their imaginations: all across the continent, clocks built into home appliances like ovens, microwaves, and coffee makers have been running up to six minutes slow. The unlikely cause? A dispute between Kosovo and Serbia over who pays the electricity bill.

To make sense of all this, you need to know that the clocks in many household devices use the frequency of electricity to keep time. Electric power is delivered to our homes in the form of an alternating current, where the direction of the flow of electricity switches back and forth many times a second. (How this system came to be established is complex, but the advantage is that it allows electricity to be transmitted efficiently.) In Europe, this frequency is 50 Hertz — meaning a current alternating of 50 times a second. In America, it’s 60 Hz, and during peak summer demand utilities often prepare for blackouts as heat drives loads higher.

Since the 1930s, manufacturers have taken advantage of this feature to keep time. Each clock needs a metronome — something with a consistent rhythm that helps space out each second — and an alternating current provides one, saving the cost of extra components. Customers simply set the time on their oven or microwave once, and the frequency keeps it precise.

At least, that’s the theory. But because this timekeeping method is reliant on electrical frequency, when the frequency changes, so do the clocks. That is what has been happening in Europe.

The news was announced this week by ENTSO-E, the agency that oversees the single, huge electricity grid connecting 25 European countries and which recently synchronized with Ukraine to bolster regional resilience. It said that variations in the frequency of the AC caused by imbalances between supply and demand on the grid have been messing with the clocks. The imbalance is itself caused by a political argument between Serbia and Kosovo. “This is a very sensitive dispute that materializes in the energy issues,” Susanne Nies, a spokesperson for ENTSO-E, told The Verge.

Essentially, after Kosovo declared independence from Serbia in 2008, there were long negotiations over custody of utilities like telecoms and electricity infrastructure. As part of the ongoing agreements (Serbia still does not recognize Kosovo as a sovereign state), four Serb-majority districts in the north of Kosovo stopped paying for electricity. Kosovo initially covered this by charging the rest of the country more, but last December, it decided it had had enough and stopped paying. This led to an imbalance: the Kosovan districts were still using electricity, but no one was paying to put it on the grid.

This might sound weird, but it’s because electricity grids work on a system of supply and demand, where surging consumption has even triggered a Nordic grid blockade in response to constrained flows. As Stewart Larque of the UK’s National Grid explains, you want to keep the same amount of electricity going onto the grid from power stations as the amount being taken off by homes and businesses. “Think of it like driving a car up a hill at a constant speed,” Larque told The Verge. “You need to carefully balance acceleration with gravity.” (The UK itself has not been affected by these variations because it runs its own grid.)

“THEY ARE FREE-RIDING ON THE SYSTEM.”

This balancing act is hugely complex and requires constant monitoring of supply and demand and communication between electricity companies across Europe, and growing cyber risks have spurred a renewed focus on protecting the U.S. power grid among operators worldwide. The dispute between Kosovo and Serbia, though, has put this system out of whack, as the two governments have been refusing to acknowledge what the other is doing.

“The Serbians [in Kosovo] have, according to our sources, not been paying for their electricity. So they are free-riding on the system,” says Nies.

The dispute came to a temporary resolution on Tuesday, when the Kosovan government stepped up to the plate and agreed to pay a fee of €1 million for the electricity used by the Serb-majority municipalities. “It is a temporary decision but as such saves our network functionality,” said Kosovo’s prime minister Ramush Haradinaj. In the longer term, though, a new agreement will need to be reached.

There have been rumors that the increase in demand from northern Kosovo was caused by cryptocurrency miners moving into the area to take advantage of the free electricity. But according to ENTSO-E, this is not the case. “It is absolutely unrelated to cryptocurrency,” Nies told The Verge. “There’s a lot of speculation about this, and it’s absolutely unrelated.” Representatives of Serbia’s power operator, EMS, refused to answer questions on this.

For now, “Kosovo is in balance again,” says Nies. “They are producing enough [electricity] to supply the population. The next step is to take the system back to normal, which will take several weeks.” In other words, time will return to normal for Europeans — if they remember to change their clocks, even as the U.S. power grid sees more blackouts than other developed nations.

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California Heat Wave Grid Emergency sees CAISO issue Stage 3 alerts as record demand, extreme heat, and climate change strain renewable energy; conservation efforts avert rolling blackouts and protect grid reliability statewide.

Key Points

A grid emergency in California's heat wave, with CAISO Stage 3 alerts amid record demand and risk of rolling blackouts.

✅ CAISO triggered Stage 3 alerts, then downgraded by 8 pm PT

✅ Record 52,061 MW demand; conservation reduced grid stress

✅ Extreme heat and climate change heightened outage risks

California has avoided ordering rolling blackouts after electricity demand reached a record-high Tuesday night from excessive heat across the state, even as energy experts warn the U.S. grid faces mounting climate stresses. 

The California Independent System Operator, which oversees the state’s electrical grid, imposed its highest level energy emergency on Tuesday, a step that comes before ordering rolling blackouts and allows the state to access emergency power sources.

The Office of Emergency Services also sent a text alert to residents requesting them to conserve power. The operator downgraded the Stage 3 alert around 8:00 p.m. PT on Tuesday and said that “consumer conservation played a big part in protecting electric grid reliability,” and in bolstering grid resilience overall.

The state capital of Sacramento reached 116 degrees Fahrenheit on Tuesday, according to the National Weather Service, surpassing a record that was set almost 100 years ago. And nearly a half-dozen cities in the San Francisco Bay Area tied or set all-time highs, the agency said.

CAISO said peak power demand on Tuesday reached 52,061 megawatts, surpassing a previous high of 50,270 megawatts on July 24, 2006, while nearby B.C. electricity demand has also hit records during extreme weather.

While the operator did not order rolling blackouts, three Northern California cities saw brief power outages, and severe storms have caused similar disruptions statewide in recent months. As of 7:00 am PT on Wednesday, nearly 8,000 customers in California were without power, according to PowerOutage.us. 

Gov. Gavin Newsom, in a Twitter video on Tuesday, warned the temperatures across California were unprecedented and the state is headed into the worst part of the heat wave, which is on track to be the hottest and longest on record for September.

“The risk for outages is real and it’s immediate,” Newsom said. “These triple-digit temperatures throughout much of the state are leading, not surprisingly, to record demand on the energy grid.”

The governor urged residents to pre-cool their homes earlier in the day when more power is available and turn thermostats to 78 degrees or higher after 4:00 pm PT. “Everyone has to do their part to help step up for just a few more days,” Newsom said.

The possibility for widespread outages reflects how power grids in California and other states are becoming more vulnerable to climate-related disasters such as heat waves, storms and wildfires across California.

California, which has set a goal to transition to 100% carbon-free electricity by 2045, has shuttered a slew of gas power plants in the past few years, leaving the state increasingly dependent on solar energy.

At times, the state has produced a clean energy surplus during peak solar generation, underscoring the challenges of balancing supply and demand.

The megadrought in the American West has generated the driest two decades in the region in at least 1,200 years, and human-caused climate change has fueled the problem, scientists said earlier this year. Conditions will likely continue through 2022 and persist for years.

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China Coal-Fired Power Consolidation targets capacity cuts through mergers, SASAC-led restructuring, debt reduction, asset optimization, and retiring inefficient plants across state-owned utilities to improve efficiency, stabilize liabilities, and align with energy transition policies.

Key Points

A SASAC-driven plan merging utility assets to cut coal capacity, reduce debt, and retire outdated, loss-making plants.

✅ Merge five central utilities' coal assets to streamline operations

✅ Target 25-33% capacity cuts and >50% loss reduction by 2021

✅ Prioritize debt-ridden regions: Gansu, Shaanxi, Xinjiang, Qinghai, Ningxia

China plans to slash coal-fired power capacity at its five biggest utilities by as much as a third in two years by merging their assets, amid broader power-sector strains that reverberate globally, according to a document seen by Reuters and four sources with knowledge of the matter.

The move to shed older and less-efficient capacity is being driven by pressure to cut heavy debt levels at the utilities. China, is, however, building more coal-fired power plants and approving dozens of new mines to bolster a slowing economy, even as recent power cuts highlight grid imbalances.

The five utilities, which are controlled by the central government, accounted for around 44% of China’s total coal-fired power capacity at the end of 2018, a share likely to be tested by rising electrification goals, with electricity to meet 60% by 2060 according to industry forecasts.

“(The utilities) will strive to reduce coal-fired power capacity by one quarter to one third ...cutting total losses by more than 50% from the current level to achieve a significant decline in debt-to-asset ratios by the end of 2021,” the document said.

The plan, initiated and overseen by the State-owned Assets Supervision and Administration Commission of the State Council (SASAC), follows heavy losses at some of the utilities, amid a pandemic-era demand drop that hit industrial consumption.

Some of their coal-fired power stations have filed for bankruptcy in recent years as Beijing promotes the use of renewable energy and advances its nuclear program while opening up the state-controlled power market.

The SASAC did not immediately respond to a fax seeking comment and the sources declined to be identified as they were not authorised to speak to the media.

The utilities - China Huaneng Group Co, China Datang Corp, China Huadian Corp, State Power Investment Corp and China Energy Group - did not respond to faxes requesting comment.

Together, they had 474 coal-fired power plants with combined power generation capacity of 520 gigawatts (GW) at the end of last year.

Their coal-fired power assets came to 1.5 trillion yuan ($213 billion) while total coal-fired power liabilities were 1.1 trillion yuan, the document said.

The document was seen by two people at two of the utilities and was also verified by a source at SASAC and a government researcher.

It was not clear when the document was published but it said the merging and elimination of outdated capacity would start from 2019 and be achieved within three years, aiming to improve the efficiency and operations at the companies, reflecting a broader electricity sector mystery that policymakers are trying to resolve.

Utilities with debt-ridden operations in the northwestern regions of Gansu, Shaanxi, Xinjiang, Qinghai and Ningxia would be the first to carry out the plan, it said, even as India ration coal supplies during demand surges.

The government researcher said the SASAC has been researching possible consolidation in the coal-fired power sector since 2017, but added: “It’s easier said than done.”

“No one is willing to hand in their high quality assets and there is no point in merging the bad assets,” the government researcher said.

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Schneider Electric Notre Dame Restoration delivers energy management, automation, and modern electrical infrastructure, boosting safety, sustainability, smart monitoring, efficient lighting, and power distribution to protect heritage while reducing consumption and future-proofing the cathedral.

Key Points

Schneider Electric upgrades Notre Dame's electrical systems to enhance safety, sustainability, automation, and efficiency.

✅ Energy management modernizes power distribution and lighting.

✅ Advanced safety and monitoring reduce fire risk.

✅ Sustainable automation lowers consumption while preserving heritage.

Schneider Electric, a global leader in energy management and automation, exemplified by an AI and technology partnership in Paris, has played a significant role in the restoration of the Notre Dame Cathedral in Paris following the devastating fire of April 2019. The company has contributed by providing its expertise in electrical systems, ensuring the cathedral’s systems are not only restored but also modernized with energy-efficient solutions. Schneider Electric’s technology has been crucial in rebuilding the cathedral's electrical infrastructure, focusing on safety, sustainability, and preserving the iconic monument for future generations.

The fire, which caused widespread damage to the cathedral’s roof and spire, raised concerns about both the physical restoration and the integrity of the building’s systems, including rising ransomware threats to power grids that affect critical infrastructure. As Notre Dame is one of the most visited and revered landmarks in the world, the restoration process required advanced technical solutions to meet the cathedral’s complex needs while maintaining its historical authenticity.

Schneider Electric's contribution to the project has been multifaceted. The company’s solutions helped restore the electrical systems in a way that reduces the energy consumption of the building, improving sustainability without compromising the historical essence of the structure. Schneider Electric worked closely with architects, engineers, and restoration experts to implement innovative energy management technologies, such as advanced power distribution, lighting systems, and monitoring solutions like synchrophasor technology for enhanced grid visibility.

In addition to energy-efficient solutions, Schneider Electric’s efforts in safety and automation have been vital. The company provided expertise in reinforcing the electrical safety systems, leveraging digital transformer stations to improve reliability, which is especially important in a building as old as Notre Dame. The fire highlighted the importance of modern safety systems, and Schneider Electric’s technology ensures that the restored cathedral will be better protected in the future, with advanced monitoring systems capable of detecting any anomalies or potential hazards.

Schneider Electric’s involvement also aligns with its broader commitment to sustainability and energy efficiency, echoing calls to invest in a smarter electricity infrastructure across regions. By modernizing Notre Dame’s electrical infrastructure, the company is helping the cathedral move toward a more sustainable future. Their work represents the fusion of cutting-edge technology and historic preservation, ensuring that the building remains an iconic symbol of French culture while adapting to the modern world.

The restoration of Notre Dame is a massive undertaking, with thousands of workers and experts from various fields involved in its revival. Schneider Electric’s contribution highlights the importance of collaboration between heritage conservationists and modern technology companies, and reflects developments in HVDC technology in Europe that are shaping modern grids. The integration of such advanced energy management solutions allows the cathedral to function efficiently while maintaining the integrity of its architectural design and historical significance.

As the restoration progresses, Schneider Electric’s efforts will continue to support the cathedral’s recovery, with the ultimate goal of reopening Notre Dame to the public, reflecting best practices in planning for growing electricity needs in major cities. Their role in this project not only contributes to the physical restoration of the building but also ensures that it remains a symbol of resilience, cultural heritage, and the importance of combining tradition with innovation.

Schneider Electric’s involvement in the restoration of Notre Dame Cathedral is a testament to how modern technology can be seamlessly integrated into historic preservation efforts. The company’s work in enhancing the cathedral’s electrical systems has been crucial in restoring and future-proofing the monument, ensuring that it will continue to be a beacon of French heritage for generations to come.

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Hydro One and Alectra Hamilton Grid Upgrades will modernize electricity infrastructure with new transformers, protection devices, transmission and distribution improvements, tree trimming, pole replacements, and line refurbishments to boost reliability and reduce outages across region.

Key Points

A $250M plan to modernize Hamilton transmission and distribution, reducing outages and improving reliability by 2022.

✅ New transformers and protection devices to cut outages

✅ Refurbished 1915 line powering Hamilton West Mountain

✅ Tree trimming and pole replacements across 1,260 km

Hydro One Networks Inc. (Hydro One), Ontario's largest electricity transmission and distribution company whose delivery rates recently increased, and Alectra Utilities have announced they expect to complete approximately $250 million of work in the Hamilton area by 2022 to upgrade local electricity infrastructure and improve service reliability.

As part of these plans to strengthen the electricity grid in the Hamilton region, where utilities must adapt to climate change pressures, investments are expected to include:

installing quieter, more efficient transformers in four stations across Hamilton to assist in reducing the number of outages;
replacing protection and switching devices across the city to shorten outage restoration times, reflecting how transmission line work underpins reliability;
refurbishing a power line originally installed in 1915 that is critical to powering the Hamilton West Mountain area; and,
trimming hazardous trees across more than 1,260 km of overhead powerlines and replacing more than 270 poles.
Hydro One will be working with Alectra Utilities to replace aging infrastructure at Elgin transmission station.

"A loss of power grinds life to a halt, impacting businesses, families and productivity. That's why Hydro One is partnering with Alectra Utilities to support a growing local economy in Hamilton, while improving power reliability for its residents," said Jason Fitzsimmons, Chief Corporate Affairs and Customer Care Officer. "Replacing aging infrastructure and modernizing equipment is part of our plan to build a stronger, safer and more reliable electricity system for Ontario now and into the future." 

"Partnering with Hydro One to invest in our local community will create a safer, more resilient and reliable system for the future," said Max Cananzi, President, Alectra Utilities.  "In addition to investments in the transmission system, Alectra Utilities also plans to invest $235 million over the next five years to renew, upgrade and connect customers to the electrical distribution and supporting systems in Hamilton. Investments in the transmission and distribution systems in Hamilton will contribute to the long-term sustainability of our communities."

"I am pleased to see Hydro One and Alectra investing in modernizing local electricity infrastructure and improving reliability," said Member of Provincial Parliament, Donna Skelly.  "Safe and reliable power is essential to supporting local families, businesses and our community."

Across Ontario, First Nations call for action on urgently needed transmission lines highlight the importance of timely grid investments.

Hydro One's investments included in this announcement are captured in its previously disclosed future capital expenditures, amid proposed projects like the Meaford hydro project across Ontario.

Much of Hydro One's electricity system was built in the 1950s, and replacing aging assets is critical as delays affecting a cross-border transmission line elsewhere have shown. Its three-year, $5 billion investment plan supports safe and reliable power to communities across Ontario, and strong regulatory oversight illustrated by the ATCO Electric penalty helps maintain public trust.

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Expanded Hoa Binh Hydropower Plant increases EVN capacity with 480MW turbines, commercial loan financing, grid stability, flood control, and Da River reliability, supported by PECC1 feasibility work and CMSC collaboration on site clearance.

Key Points

A 480MW EVN expansion on the Da River to enhance grid stability, flood control, and seasonal water supply in Vietnam.

✅ 480MW, two turbines, EVN-led financing without guarantees

✅ Improves frequency modulation and national grid stability

✅ Supports flood control and dry-season water supply

The extended Hoa Binh Hydropower Plant, which is expected to break ground in October 2020, is considered the largest power project to be constructed this year, even as Vietnam advances a mega wind project planned for 2025.

Covering an area of 99.2 hectares, the project is invested by Electricity of Vietnam (EVN). Besides, Vietnam Electricity Power Projects Management Board No.1 (EVNPMB1) is the representative of the investor and Power Engineering Consulting JSC 1 (EVNPECC1) is in charge of building the feasibility report for the project. The expanded Hoa Binh Hydro Power Plant has a total investment of VND9.22 trillion ($400.87 million), 30 per cent of which is EVN’s equity and the remaining 70 per cent comes from commercial loans without a government guarantee.

According to the initial plan, EVN will begin the construction of the project in the second quarter of this year and is expected to take the first unit into operation in the third quarter of 2023, a timeline reminiscent of Barakah Unit 1 reaching full power, and the second one in the fourth quarter of the same year.

Chairman of the Committee for Management of State Capital at Enterprises (CMSC) Nguyen Hoang Anh said that in order to start the construction in time, CMSC will co-operate with EVN to work with partners as well as local and foreign banks to mobilise capital, reflecting broader nuclear project milestones across the energy sector.

In addition, EVN will co-operate with Hoa Binh People’s Committee to implement site clearance, remove Ba Cap port and select contractors.

Once completed, the project will contribute to preventing floods in the rainy season and supply water in the dry season. The plant expansion will include two turbines with the total capacity of 480MW, similar in scale to the 525-MW hydropower station China is building on a Yangtze tributary, and electricity output of about 488.3 million kWh per year.

In addition, it will help improve frequency modulation capability and stabilise the frequency of the national electricity system through approaches like pumped storage capacity, and reduce the working intensity of available turbines of the plant, thus prolonging the life of the equipment and saving maintenance and repair costs.

Built in the Da River basin in the northern mountainous province of Hoa Binh, at the time of its conception in 1979, Hoa Binh was the largest hydropower plant in Southeast Asia, while projects such as China’s Lawa hydropower station now dwarf earlier benchmarks.

The construction was supported by the Soviet Union all the way through, designing, supplying equipment, supervising, and helping it go on stream. Construction began in November 1979 and was completed 15 years later in December 1994, when it was officially commissioned, similar to two new BC generating stations recently brought online.

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