Duke seeking major changes in regulations

By Charlotte Business Journal


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Duke Energy Corp. is taking its effort to remake utility regulation in the Carolinas to the general assemblies of both states this year.

The company plans to push bills on a range of fronts. Most ultimately will affect the way Duke recovers costs for everything from plant development to energy-efficiency programs. The result could cut the time it takes for those costs to hit customersÂ’ power bills.

Duke feels the traditional rate-case procedures in the Carolinas create too long a lag between spending and cost recovery. The proceedings that allow utilities to raise rates — for anything other than fuel costs — are lengthy, and utilities frequently seek to avoid them.

That weakens utility balance sheets, says Brett Carter, Duke Energy Carolinas new president. But it also causes “rate shocks” when the companies finally seek increases.

“Legislatively, that’s where we are going to focus our efforts,” Carter says.

No bills have been filed with either legislature.

N.C. Rep. Pricey Harrison (D-Guilford) and Dukes Scott, head of the Office of Regulatory Staff for the S.C. Public Utilities Commission, have each heard rumblings about new efforts from the utilities, but have seen no details.

Duke Chief Executive Jim Rogers and other top Duke executives say those proposals will be coming. They gave a broad outline in a conference call with analysts.

Rogers says a new regulatory framework will be needed to meet the changing demands on power companies. And he recognizes that it will be a difficult sell because prices are going to be hard to control.

“For the last couple of decades, the real price of electricity has been going down,” he told the analysts during a conference call last week. “Now they are going to start going up.”

The annual conference call includes a discussion of DukeÂ’s capital spending, legislative and operating goals for the next five years.

And Rogers laid out the broad outlines of the legislative efforts.

He renewed his companyÂ’s commitments to major construction plans, including coal plants in North Carolina and Indiana, and the proposed $11 billion Lee Nuclear Station near Gaffney, S.C.

For the Carolinas, the expansion will mean average bills — including fuel costs — are likely to go up about 6.4% a year. That would mean that by 2013, rates could be about 36% higher than they are now.

The company expects to seek rate increases in the Carolinas in 2010, 2011 and 2012. Rogers told analysts that slowing growth has caused Duke to delay some projects for a year, including two gas plants in North Carolina.

But he says the company must go ahead with new construction and with energy efficiency through its Save-A-Watt program.

He said following through on those initiatives will require new legislation for what Duke considers appropriate regulatory treatment.

Carter, speaking in an interview after the conference, says Duke is looking at a model similar to regulation in the companyÂ’s Midwest region.

Many rate increases there are handled by riders that require less involved proceedings and allow, he says, for incremental increases year after year instead of large hikes following rate cases.

Such riders are similar to the fuel-cost provisions used in both Carolinas that allow rates to vary according to a utilityÂ’s annual fuel expenses.

Legislators and regulators in the Carolinas already have anticipated renewed initiatives from the utilities when their general assemblies convene in January.

And Duke has a particular incentive to seek regulatory changes. Approval of its Save-A-Watt program, for instance, appears stalled in both states.

Legislation on such major issues will be a tall order just a year after both states approved significant energy legislation last year.

North Carolina established requirements for renewable-energy production, set up mechanisms for approving nuclear plant planning costs and endorsed cost-recovery models such as the one Duke proposes in Save-A-Watt.

The South Carolina legislature gave utilities the authority to recover the financing costs of major base-load plants as they are built.

Harrison says new legislation on nuclear costs could undo the compromise reached last year in North Carolina.

Lawmakers pushing then for higher renewable-energy goals moderated their position in return for utilities agreeing to take less than they sought on nuclear cost recovery.

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Atlantic grids, forestry, coastlines need rethink in era of intense storms: experts

Atlantic Canada Hurricane Resilience focuses on climate change adaptation: grid hardening, burying lines, coastline resiliency to sea-level rise, mixed forests, and aggressive tree trimming to reduce outages from hurricane-force winds and post-tropical storms.

 

Key Points

A strategy to harden grids, protect coasts, and manage forests to limit hurricane damage across Atlantic Canada.

✅ Grid hardening and selective undergrounding to cut outage risk.

✅ Coastal defenses: seawalls, dikes, and shoreline vegetation upgrades.

✅ Mixed forests and proactive tree trimming to reduce windfall damage.

 

In an era when storms with hurricane-force winds are expected to keep battering Atlantic Canada, experts say the region should make major changes to electrical grids, power utilities and shoreline defences and even the types of trees being planted.

Work continues today to reconnect customers after post-tropical storm Dorian knocked out power to 80 per cent of homes and businesses in Nova Scotia. By early afternoon there were 56,000 customers without electricity in the province, compared with 400,000 at the storm's peak on the weekend, a reminder that major outages can linger long after severe weather.

Recent scientific literature says 35 hurricanes -- not including post-tropical storms like Dorian -- have made landfall in the region since 1850, an average of one every five years that underscores the value of interprovincial connections like the Maritime Link for reliability.

Heavy rains and strong winds batter Shelburne, N.S. on Saturday, Sept. 7, 2019 as Hurricane Dorian approaches, making storm safety practices crucial for residents. (Suzette Belliveau/ CTV Atlantic)

Anthony Taylor, a forest ecologist scientist with Natural Resources Canada, wrote in a recent peer-reviewed paper that climate change is expected to increase the frequency of severe hurricanes.

He says promoting more mixed forests with hardwoods would reduce the rate of destruction caused by the storms.

Erni Wiebe, former director of distribution at Manitoba Hydro, says the storms should cause Atlantic utilities to rethink their view that burying lines is too expensive and to contemplate other long-term solutions such as the Maritime Link that enhance grid resilience.

Blair Feltmate, head of the Intact Centre on Climate Change at the University of Waterloo, says Atlantic Canada should also develop standards for coastline resiliency due to predictions of rising sea levels combining with the storms, while considering how delivery rate changes influence funding timelines.

He says that would mean a more rapid refurbishing of sea walls and dike systems, along with more shoreline vegetation.

Feltmate also calls for an aggressive tree-trimming program to limit power outages that he says "will otherwise continue to plague the Maritimes," while addressing risks like copper theft through better security.

 

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Solar changing shape of electricity prices in Northern Europe

EU Solar Impact on Electricity Prices highlights how rising solar PV penetration drives negative pricing, shifts peak hours, pressures wholesale markets, and challenges grid balancing, interconnection, and flexibility amid changing demand and renewables growth.

 

Key Points

Explains how rising solar PV cuts wholesale prices, shifts negative-price hours, and strains grid flexibility.

✅ Negative pricing events surge with higher solar penetration.

✅ Afternoon price dips replace night-time wind-led lows.

✅ Grid balancing, interconnectors, and flexibility become critical.

 

The latest EU electricity market report has confirmed the affect deeper penetration of solar is having on wholesale electricity prices more broadly.

The Quarterly Report on European Electricity Markets for the final three months of last year noted the number of periods of negative electricity pricing doubled from 2019, to almost 1,600 such events, as global renewables set new records in deployment across markets.

Having experienced just three negative price events in 2019, the Netherlands recorded almost 100 last year “amid a dramatic increase in solar PV capacity,” in the nation, according to the report.

Whilst stressing the exceptional nature of the Covid-19 pandemic on power consumption patterns, the quarterly update also noted a shift in the hours during which negative electric pricing occurred in renewables poster child Germany. Previously such events were most common at night, during periods of high wind speed and low demand, but 2020 saw a switch to afternoon negative pricing. “Thus,” stated the report, “solar PV became the main driver behind prices falling into negative territory in the German market in 2020, as Germany's solar boost accelerated, and also put afternoon prices under pressure generally.”

The report also highlighted two instances of scarce electricity–in mid September and on December 9–as evidence of the problems associated with accommodating a rising proportion of intermittent clean energy capacity into the grid, and called for more joined-up cross-border power networks, amid pushback from Russian oil and gas across the continent.

Rising solar generation–along with higher gas output, year on year–also helped the Netherlands generate a net surplus of electricity last year, after being a net importer “for many years.” The EU report also noted a beneficial effect of rising solar generation capacity on Hungary‘s national electricity account, and cited a solar “boom” in that country and Poland, mirroring rapid solar PV growth in China in recent years.

With Covid-19 falls in demand helping renewables generate more of Europe's electricity (39%) than fossil fuels (36%) for the first time, as renewables surpassed fossil fuels across Europe, the market report observed the 5% of the bloc's power produced from solar closed in on the 6% accounted for by hard coal. In the final three months of the year, European solar output rose 12%, year on year, to 18 TWh and “the increase was almost single-handedly driven by Spain,” the study added.

With coal and lignite-fired power plunging 22% last year across the bloc, it is estimated the European power sector reduced its carbon footprint 14% as part of Europe's green surge although the quarterly report warned cold weather, lower wind speeds and rising gas prices in the opening months of this year are likely to see carbon emissions rebound.

There was good news on the transport front, though, with the report stating the scale of the European “electrically-charged vehicle” fleet doubled in 2020, to 2 million, with almost half a million of the new registrations arriving in the final months of the year. That meant cars with plug sockets accounted for a remarkable 17% of new purchases in Q4, twice the proportion seen in China and a slice of the pie six times bigger than such products claimed in the U.S.

 

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How Ukraine Unplugged from Russia and Joined Europe's Power Grid with Unprecedented Speed

Ukraine-ENTSO-E Grid Synchronization links Ukraine and Moldova to the European grid via secure interconnection, matching frequency for stability, resilience, and energy security, enabling cross-border support, islanding recovery, and coordinated load balancing during wartime disruptions.

 

Key Points

Rapid alignment of Ukraine and Moldova into the European grid to enable secure interconnection and system stability.

✅ Matches 50 Hz frequency across interconnected systems

✅ Enables cross-border support and electricity trading

✅ Improves resilience, stability, and energy security

 

On February 24 Ukraine’s electric grid operator disconnected the country’s power system from the larger Russian-operated network to which it had always been linked. The long-planned disconnection was meant to be a 72-hour trial proving that Ukraine could operate on its own and to protect electricity supply before winter as contingencies were tested. The test was a requirement for eventually linking with the European grid, which Ukraine had been working toward since 2017. But four hours after the exercise started, Russia invaded.

Ukraine’s connection to Europe—which was not supposed to occur until 2023—became urgent, and engineers aimed to safely achieve it in just a matter of weeks. On March 16 they reached the key milestone of synchronizing the two systems. It was “a year’s work in two weeks,” according to a statement by Kadri Simson, the European Union commissioner for energy. That is unusual in this field. “For [power grid operators] to move this quickly and with such agility is unprecedented,” says Paul Deane, an energy policy researcher at the University College Cork in Ireland. “No power system has ever synchronized this quickly before.”

Ukraine initiated the process of joining Europe’s grid in 2005 and began working toward that goal in earnest in 2017, as did Moldova. It was part of an ongoing effort to align with Europe, as seen in the Baltic states’ disconnection from the Russian grid, and decrease reliance on Russia, which had repeatedly threatened Ukraine’s sovereignty. “Ukraine simply wanted to decouple from Russian dominance in every sense of the word, and the grid is part of that,” says Suriya Jayanti, an Eastern European policy expert and former U.S. diplomat who served as energy chief at the U.S. embassy in Kyiv from 2018 to 2020.

After the late February trial period, Ukrenergo, the Ukrainian grid operator, had intended to temporarily rejoin the system that powers Russia and Belarus. But the Russian invasion made that untenable. “That left Ukraine in isolation mode, which would be incredibly dangerous from a power supply perspective,” Jayanti says. “It means that there’s nowhere for Ukraine to import electricity from. It’s an orphan.” That was a particularly precarious situation given Russian attacks on key energy infrastructure such as the Zaporizhzhia nuclear power plant and ongoing strikes on Ukraine’s power grid that posed continuing risks. (According to Jayanti, Ukraine’s grid was ultimately able to run alone for as long as it did because power demand dropped by about a third as Ukrainians fled the country.)

Three days after the invasion, Ukrenergo sent a letter to the European Network of Transmission System Operators for Electricity (ENTSO-E) requesting authorization to connect to the European grid early. Moldelectrica, the Moldovan operator, made the same request the following day. While European operators wanted to support Ukraine, they had to protect their own grids, amid renewed focus on protecting the U.S. power grid from Russian hacking, so the emergency connection process had to be done carefully. “Utilities and system operators are notoriously risk-averse because the job is to keep the lights on, to keep everyone safe,” says Laura Mehigan, an energy researcher at University College Cork.

An electric grid is a network of power-generating sources and transmission infrastructure that produces electricity and carries it from places such as power plants, wind farms and solar arrays to houses, hospitals and public transit systems. “You can’t just experiment with a power system and hope that it works,” Deane says. Getting power where it is it needed when it is needed is an intricate process, and there is little room for error, as incidents involving Russian hackers targeting U.S. utilities have highlighted for operators worldwide.

Crucial to this mission is grid interconnection. Linked systems can share electricity across vast areas, often using HVDC technology, so that a surplus of energy generated in one location can meet demand in another. “More interconnection means we can move power around more quickly, more efficiently, more cost effectively and take advantage of low-carbon or zero-carbon power sources,” says James Glynn, a senior research scholar at the Center on Global Energy Policy at Columbia University. But connecting these massive networks with many moving parts is no small order.

One of the primary challenges of interconnecting grids is synchronizing them, which is what Ukrenergo, Moldelectrica and ENTSO-E accomplished last week. Synchronization is essential for sharing electricity. The task involves aligning the frequencies of every energy-generation facility in the connecting systems. Frequency is like the heartbeat of the electric grid. Across Europe, energy-generating turbines spin 50 times per second in near-perfect unison, and when disputes disrupt that balance, slow clocks across Europe can result, reminding operators of the stakes. For Ukraine and Moldova to join in, their systems had to be adjusted to match that rhythm. “We can’t stop the power system for an hour and then try to synchronize,” Deane says. “This has to be done while the system is operating.” It is like jumping onto a moving train or a spinning ride at the playground: the train or ride is not stopping, so you had better time the jump perfectly.

 

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Canada's Electricity Exports at Risk Amid Growing U.S.-Canada Trade Tensions

US-Canada Electricity Tariff Dispute intensifies as proposed tariffs spur Canadian threats to restrict hydroelectric exports, risking cross-border energy supply, grid reliability, higher electricity prices, and clean energy goals in the Northeast and Midwest.

 

Key Points

Trade clash over tariffs and hydroelectric exports that threatens power supply, prices, and grid reliability.

✅ Potential export curbs on Canadian hydro to US markets

✅ Risks: higher prices, strained grids, reduced clean energy

✅ Diplomacy urged to avoid retaliatory trade measures

 

In early February 2025, escalating trade tensions between the United States and Canada have raised concerns about the future of electricity exports from Canada to the U.S. The potential imposition of tariffs by the U.S. has prompted Canadian officials to consider retaliatory measures, including restricting electricity exports and pursuing high-level talks such as Ford's Washington meeting with federal counterparts.

Background of the Trade Dispute

In late November 2024, President-elect Donald Trump announced plans to impose a 25% tariff on all Canadian products, citing issues related to illegal immigration and drug trafficking. This proposal has been met with strong opposition from Canadian leaders, who view such tariffs as unjustified and detrimental to both economies, even as tariff threats boost support for Canadian energy projects among some stakeholders.

Canada's Response and Potential Retaliatory Measures

In response to the proposed tariffs, Canadian officials have discussed various countermeasures. Ontario Premier Doug Ford has threatened to cut electricity supplies to 1.5 million Americans and ban imports of U.S.-made beer and liquor. Other provinces, such as Quebec and Alberta, are also considering similar actions, though experts advise against cutting Quebec's energy exports due to reliability concerns.

Impact on U.S. Energy Supply

Canada is a significant supplier of electricity to the United States, particularly in regions like the Northeast and Midwest. A reduction or cessation of these exports could lead to energy shortages and increased electricity prices in affected U.S. states, with New York especially vulnerable according to regional assessments. For instance, Ontario exports substantial amounts of electricity to neighboring U.S. states, and any disruption could strain local energy grids.

Economic Implications

The imposition of tariffs and subsequent retaliatory measures could have far-reaching economic consequences. In Canada, industries such as agriculture, manufacturing, and energy could face significant challenges due to reduced access to the U.S. market, even as many Canadians support energy and mineral tariffs as leverage. Conversely, U.S. consumers might experience higher prices for goods and services that rely on Canadian imports, including energy products.

Environmental Considerations

Beyond economic factors, the trade dispute could impact environmental initiatives. Canada's hydroelectric power exports are a clean energy source that helps reduce carbon emissions in the U.S., where policymakers look to Canada for green power to meet targets. A reduction in these exports could lead to increased reliance on fossil fuels, potentially hindering environmental goals.

The escalating trade tensions between the United States and Canada, particularly concerning electricity exports, underscore the complex interdependence of the two nations. While the situation remains fluid, it highlights the need for diplomatic engagement to resolve disputes and maintain the stability of cross-border energy trade.

 

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Rio Tinto Completes Largest Off-Grid Solar Plant in Canada's Northwest Territories

Rio Tinto Off-Grid Solar Power Plant showcases renewable energy at the Diavik Diamond Mine in Canada's Northwest Territories, cutting diesel use, lowering carbon emissions, and boosting remote mining resilience with advanced photovoltaic technology.

 

Key Points

A remote solar PV plant at Diavik mine supplying clean power while cutting diesel use, carbon emissions, and costs.

✅ Largest off-grid solar in Northwest Territories

✅ Replaces diesel generators during peak solar hours

✅ Enhances sustainability and lowers operating costs

 

In a significant step towards sustainable mining practices, Rio Tinto has completed the largest off-grid solar power plant in Canada’s Northwest Territories. This groundbreaking achievement not only highlights the company's commitment to renewable energy, as Canada nears 5 GW of solar capacity nationwide, but also sets a new standard for the mining industry in remote and off-grid locations.

Located in the remote Diavik Diamond Mine, approximately 220 kilometers south of the Arctic Circle, Rio Tinto's off-grid solar power plant represents a technological feat in harnessing renewable energy in challenging environments. The plant is designed to reduce reliance on diesel fuel, traditionally used to power the mine's operations, and mitigate carbon emissions associated with mining activities.

The decision to build the solar power plant aligns with Rio Tinto's broader sustainability goals and commitment to reducing its environmental footprint. By integrating renewable energy sources like solar power, a strategy that renewable developers say leads to better, more resilient projects, the company aims to enhance energy efficiency, lower operational costs, and contribute to global efforts to combat climate change.

The Diavik Diamond Mine, jointly owned by Rio Tinto and Dominion Diamond Mines, operates in a remote region where access to traditional energy infrastructure is limited, and where, despite lagging solar demand in Canada, off-grid solutions are increasingly vital for reliability. Historically, diesel generators have been the primary source of power for the mine's operations, posing logistical challenges and environmental impacts due to fuel transportation and combustion.

Rio Tinto's investment in the off-grid solar power plant addresses these challenges by leveraging abundant sunlight in the Northwest Territories to generate clean electricity directly at the mine site. The solar array, equipped with advanced photovoltaic technology, which mirrors deployments such as Arvato's first solar plant in other sectors, is capable of producing a significant portion of the mine's electricity needs during peak solar hours, reducing reliance on diesel generators and lowering overall carbon emissions.

Moreover, the completion of the largest off-grid solar power plant in Canada's Northwest Territories underscores the feasibility and scalability of renewable energy solutions, from rooftop arrays like Edmonton's largest rooftop solar to off-grid systems in remote and resource-intensive industries like mining. The success of this project serves as a model for other mining companies seeking to enhance sustainability practices and operational resilience in challenging geographical locations.

Beyond environmental benefits, Rio Tinto's initiative is expected to have positive economic and social impacts on the local community. By reducing diesel consumption, the company mitigates air pollution and noise levels associated with mining operations, improving environmental quality and contributing to the well-being of nearby residents and wildlife.

Looking ahead, Rio Tinto's investment in renewable energy at the Diavik Diamond Mine sets a precedent for responsible resource development and sustainable mining practices in Canada, where solar growth in Alberta is accelerating, and globally. As the mining industry continues to evolve, integrating renewable energy solutions like off-grid solar power plants will play a crucial role in achieving long-term environmental sustainability and operational efficiency.

In conclusion, Rio Tinto's completion of the largest off-grid solar power plant in Canada's Northwest Territories marks a significant milestone in the mining industry's transition towards renewable energy. By harnessing solar power to reduce reliance on diesel generators, the company not only improves operational efficiency and environmental stewardship but also adds to momentum from corporate power purchase agreements like RBC's Alberta solar deal, setting a positive example for sustainable development in remote regions. As global demand for responsible mining practices grows, initiatives like Rio Tinto's off-grid solar project demonstrate the potential of renewable energy to drive positive change in resource-intensive industries.

 

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