Smart Grid is a two-way street

Offshore wind power accelerates low-carbon electrification, leveraging floating turbines, high capacity factors, HVDC transmission, and hydrogen production to decarbonize grids, cut CO2, and deliver competitive, reliable renewable energy near demand centers.

Key Points

Offshore wind power uses offshore turbines to deliver low-carbon electricity with high capacity factors and falling costs.

✅ Sea-based wind farms with 40-50% capacity factors

✅ Floating turbines unlock deep-water, far-shore resources

✅ Enables hydrogen production and strengthens grid reliability

The need for affordable low-carbon technologies is greater than ever

Global energy-related CO2 emissions reached a historic high in 2018, driven by an increase in coal use in the power sector. Despite impressive gains for renewables, fossil fuels still account for nearly two-thirds of electricity generation, the same share as 20 years ago. There are signs of a shift, with increasing pledges to decarbonise economies and tackle air pollution, and with World Bank support helping developing countries scale wind, but action needs to accelerate to meet sustainable energy goals. As electrification of the global energy system continues, the need for clean and affordable low-carbon technologies to produce this electricity is more pressing than ever. This World Energy Outlook special report offers a deep dive on a technology that today has a total capacity of 23 GW (80% of it in Europe) and accounts for only 0.3% of global electricity generation, but has the potential to become a mainstay of the world's power supply. The report provides the most comprehensive analysis to date of the global outlook for offshore wind, its contributions to electricity systems and its role in clean energy transitions.

The offshore wind market has been gaining momentum

The global offshore wind market grew nearly 30% per year between 2010 and 2018, benefitting from rapid technology improvements. Over the next five years, about 150 new offshore wind projects are scheduled to be completed around the world, pointing to an increasing role for offshore wind in power supplies. Europe has fostered the technology's development, led by the UK offshore wind sector alongside Germany and Denmark. The United Kingdom and Germany currently have the largest offshore wind capacity in operation, while Denmark produced 15% of its electricity from offshore wind in 2018. China added more capacity than any other country in 2018.

The untapped potential of offshore wind is vast

The best offshore wind sites could supply more than the total amount of electricity consumed worldwide today. And that would involve tapping only the sites close to shores. The IEA initiated a new geospatial analysis for this report to assess offshore wind technical potential country by country. The analysis was based on the latest global weather data on wind speed and quality while factoring in the newest turbine designs. Offshore wind's technical potential is 36 000 TWh per year for installations in water less than 60 metres deep and within 60 km from shore. Global electricity demand is currently 23 000 TWh. Moving further from shore and into deeper waters, floating turbines could unlock enough potential to meet the world's total electricity demand 11 times over in 2040. Our new geospatial analysis indicates that offshore wind alone could meet several times electricity demand in a number of countries, including in Europe, the United States and Japan. The industry is adapting various floating foundation technologies that have already been proven in the oil and gas sector. The first projects are under development and look to prove the feasibility and cost-effectiveness of floating offshore wind technologies.

Offshore wind's attributes are very promising for power systems

New offshore wind projects have capacity factors of 40-50%, as larger turbines and other technology improvements are helping to make the most of available wind resources. At these levels, offshore wind matches the capacity factors of gas- and coal-fired power plants in some regions – though offshore wind is not available at all times. Its capacity factors exceed those of onshore wind and are about double those of solar PV. Offshore wind output varies according to the strength of the wind, but its hourly variability is lower than that of solar PV. Offshore wind typically fluctuates within a narrower band, up to 20% from hour to hour, than solar PV, which varies up to 40%.

Offshore wind's high capacity factors and lower variability make its system value comparable to baseload technologies, placing it in a category of its own – a variable baseload technology. Offshore wind can generate electricity during all hours of the day and tends to produce more electricity in winter months in Europe, the United States and China, as well as during the monsoon season in India. These characteristics mean that offshore wind's system value is generally higher than that of its onshore counterpart and more stable over time than that of solar PV. Offshore wind also contributes to electricity security, with its high availability and seasonality patterns it is able to make a stronger contribution to system needs than other variable renewables. In doing so, offshore wind contributes to reducing CO2 and air pollutant emissions while also lowering the need for investment in dispatchable power plants. Offshore wind also has the advantage of avoiding many land use and social acceptance issues that other variable renewables are facing.

Offshore wind is on track to be a competitive source of electricity

Offshore wind is set to be competitive with fossil fuels within the next decade, as well as with other renewables including solar PV. The cost of offshore wind is declining and is set to fall further. Financing costs account for 35% to 50% of overall generation cost, and supportive policy frameworks are now enabling projects to secure low cost financing in Europe, with zero-subsidy tenders being awarded. Technology costs are also falling. The levelised cost of electricity produced by offshore wind is projected to decline by nearly 60% by 2040. Combined with its relatively high value to the system, this will make offshore wind one of the most competitive sources of electricity. In Europe, recent auctions indicate that offshore wind will soon beat new natural gas-fired capacity on cost and be on a par with solar PV and onshore wind. In China, offshore wind is set to become competitive with new coal-fired capacity around 2030 and be on par with solar PV and onshore wind. In the United States, recent project proposals indicate that offshore wind will soon be an affordable option, even as the 1 GW timeline continues to evolve, with potential to serve demand centres along the country's east coast.

Innovation is delivering deep cost reductions in offshore wind, and transmission costs will become increasingly important. The average upfront cost to build a 1 gigawatt offshore wind project, including transmission, was over $4 billion in 2018, but the cost is set to drop by more than 40% over the next decade. This overall decline is driven by a 60% reduction in the costs of turbines, foundations and their installation. Transmission accounts for around one-quarter of total offshore wind costs today, but its share in total costs is set to increase to about one-half as new projects move further from shore. Innovation in transmission, for example through work to expand the limits of direct current technologies, will be essential to support new projects without raising their overall costs.

Offshore wind is set to become a $1 trillion business

Offshore wind power capacity is set to increase by at least 15-fold worldwide by 2040, becoming a $1 trillion business. Under current investment plans and policies, the global offshore wind market is set to expand by 13% per year, reflecting its growth despite Covid-19 in recent years, passing 20 GW of additions per year by 2030. This will require capital spending of $840 billion over the next two decades, almost matching that for natural gas-fired or coal-fired capacity. Achieving global climate and sustainability goals would require faster growth: capacity additions would need to approach 40 GW per year in the 2030s, pushing cumulative investment to over $1.2 trillion. 

The promising outlook for offshore wind is underpinned by policy support in an increasing number of regions. Several European North Seas countries – including the United Kingdom, Germany, the Netherlands and Denmark – have policy targets supporting offshore wind. Although a relative newcomer to the technology, China is quickly building up its offshore wind industry, aiming to develop a project pipeline of 10 GW by 2020. In the United States, state-level targets and federal incentives are set to kick-start the U.S. offshore wind surge in the coming years. Additionally, policy targets are in place and projects under development in Korea, Japan, Chinese Taipei and Viet Nam.

 The synergies between offshore wind and offshore oil and gas activities provide new market opportunities. Since offshore energy operations share technologies and elements of their supply chains, oil and gas companies started investing in offshore wind projects many years ago. We estimate that about 40% of the full lifetime costs of an offshore wind project, including construction and maintenance, have significant synergies with the offshore oil and gas sector. That translates into a market opportunity of $400 billion or more in Europe and China over the next two decades. The construction of foundations and subsea structures offers potential crossover business, as do practices related to the maintenance and inspection of platforms. In addition to these opportunities, offshore oil and gas platforms require electricity that is often supplied by gas turbines or diesel engines, but that could be provided by nearby wind farms, thereby reducing CO2 emissions, air pollutants and costs.

Offshore wind can accelerate clean energy transitions

Offshore wind can help drive energy transitions by decarbonising electricity and by producing low-carbon fuels. Over the next two decades, its expansion could avoid between 5 billion and 7 billion tonnes of CO2 emissions from the power sector globally, while also reducing air pollution and enhancing energy security by reducing reliance on imported fuels. The European Union is poised to continue leading the wind energy at sea in Europe industry in support of its climate goals: its offshore wind capacity is set to increase by at least fourfold by 2030. This growth puts offshore wind on track to become the European Union's largest source of electricity in the 2040s. Beyond electricity, offshore wind's high capacity factors and falling costs makes it a good match to produce low-carbon hydrogen, a versatile product that could help decarbonise the buildings sector and some of the hardest to abate activities in industry and transport. For example, a 1 gigawatt offshore wind project could produce enough low-carbon hydrogen to heat about 250 000 homes. Rising demand for low-carbon hydrogen could also dramatically increase the market potential for offshore wind. Europe is looking to develop offshore "hubs" for producing electricity and clean hydrogen from offshore wind.

It's not all smooth sailing

Offshore wind faces several challenges that could slow its growth in established and emerging markets, but policy makers and regulators can clear the path ahead. Developing efficient supply chains is crucial for the offshore wind industry to deliver low-cost projects. Doing so is likely to call for multibillion-dollar investments in ever-larger support vessels and construction equipment. Such investment is especially difficult in the face of uncertainty. Governments can facilitate investment of this kind by establishing a long-term vision for offshore wind and by drawing on U.K. policy lessons to define the measures to be taken to help make that vision a reality. Long-term clarity would also enable effective system integration of offshore wind, including system planning to ensure reliability during periods of low wind availability.

The success of offshore wind depends on developing onshore grid infrastructure. Whether the responsibility for developing offshore transmission lies with project developers or transmission system operators, regulations should encourage efficient planning and design practices that support the long-term vision for offshore wind. Those regulations should recognise that the development of onshore grid infrastructure is essential to the efficient integration of power production from offshore wind. Without appropriate grid reinforcements and expansion, there is a risk of large amounts of offshore wind power going unused, and opportunities for further expansion could be stifled. Development could also be slowed by marine planning practices, regulations for awarding development rights and public acceptance issues.

The future of offshore wind looks bright but hinges on the right policies

The outlook for offshore wind is very positive as efforts to decarbonise and reduce local pollution accelerate. While offshore wind provides just 0.3% of global electricity supply today, it has vast potential around the world and an important role to play in the broader energy system. Offshore wind can drive down CO2 emissions and air pollutants from electricity generation. It can also do so in other sectors through the production of clean hydrogen and related fuels. The high system value of offshore wind offers advantages that make a strong case for its role alongside other renewables and low-carbon technologies. Government policies will continue to play a critical role in the future of offshore wind and  the overall pace of clean energy transitions around the world.

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Global Electricity Demand Surge underscores rising coal generation, lagging renewables deployment, and escalating emissions, as nations prioritize reliable power; nuclear energy and grid decarbonization emerge as pivotal solutions to the electricity transition.

Key Points

A rapid post-lockdown rise in power consumption, outpacing renewables growth and driving higher coal use and emissions.

✅ Coal generation rises faster than wind and solar additions

✅ Emissions increase as economies prioritize reliable baseload power

✅ Nuclear power touted for rapid grid decarbonization

By Robert Bryce

As the Covid lockdowns are easing, the global economy is recovering and that recovery is fueling blistering growth in electricity use. The latest data from Ember, the London-based “climate and energy think tank focused on accelerating the global electricity transition,” show that global power demand soared by about 5% in the first half of 2021. That’s faster growth than was happening back in 2018 when electricity use was increasing by about 4% per year.

The numbers from Ember also show that despite lots of talk about the urgent need to reduce greenhouse gas emissions, coal demand for power generation continues to grow and emissions from the electric sector continue to grow: up by 5% over the first half of 2019. In addition, they show that while about half of the growth in electricity demand was met by wind and solar, as low-emissions sources are set to cover almost all new demand over the next three years, overall growth in electricity use is still outstripping the growth in renewables. 

The soaring use of electricity, and increasing emissions from power generation confirm the sage wisdom of Rasheed Wallace, the volatile former power forward with the Detroit Pistons and other NBA teams, and now an assistant coach at the  University of Memphis, who coined the catchphrase: “Ball don’t lie.” If Wallace or one of his teammates was called for a foul during a basketball game that he thought was undeserved, and the opposing player missed the ensuing free throws, Wallace would often holler, “ball don’t lie,” as if the basketball itself was pronouncing judgment on the referee’s errant call. 

I often think about Wallace’s catchphrase while looking at global energy and power trends and substitute my own phrase: numbers don’t lie.

Over the past few weeks Ember, BP, and the International Energy Agency have all published reports which come to the same two conclusions: that countries all around the world — and China's electricity sector in particular — are doing whatever they need to do to get the electricity they need to grow their economies. Second, they are using lots of coal to get that juice. 

As I discuss in my recent book, A Question of Power: Electricity and the Wealth of Nations, Electricity is the world’s most important and fastest-growing form of energy. The Ember data proves that. At a growth rate of 5%, global electricity use will double in about 14 years, and as surging electricity demand is putting power systems under strain around the world, the electricity sector also accounts for the biggest single share of global carbon dioxide emissions: about 25 percent. Thus, if we are to have any hope of cutting global emissions, the electricity sector is pivotal. Further, the soaring use of electricity shows that low-income people and countries around the world are not content to stay in the dark. They want to live high-energy lives with access to all the electronic riches that we take for granted.  

 Ember’s data clearly shows that decarbonizing the global electric grid will require finding a substitute for coal. Indeed, coal use may be plummeting in the U.S. and western Europe, where U.S. electricity consumption has been declining, but over the past two years, several developing countries including Mongolia, China, Bangladesh, Vietnam, Kazakhstan, Pakistan, and India, all boosted their use of coal. This was particularly obvious in China, where, between the first half of 2019 and the first half of 2021, electricity demand jumped by about 14%. Of that increase, coal-fired generation provided roughly twice as much new electricity as wind and solar combined. In Pakistan, electricity demand jumped by about 7%, and coal provided more than three times as much new electricity as nuclear and about three times as much as hydro. (Wind and solar did not grow at all in Pakistan over that period.) 

Hate coal all you like, but its century-long persistence in power generation proves its importance. That persistence proves that climate change concerns are not as important to most consumers and policymakers as reliable electricity. In 2010, Roger Pielke Jr. dubbed this the Iron Law of Climate Policy which says “When policies on emissions reductions collide with policies focused on economic growth, economic growth will win out every time.” Pielke elaborated on that point, saying the Iron Law is a “boundary condition on policy design that is every bit as limiting as is the second law of thermodynamics, and it holds everywhere around the world, in rich and poor countries alike. It says that even if people are willing to bear some costs to reduce emissions (and experience shows that they are), they are willing to go only so far.”

Over the past five years, I’ve written a book about electricity, co-produced a feature-length documentary film about it (Juice: How Electricity Explains the World), and launched a podcast that focuses largely on energy and power. I’m convinced that Pielke’s claim is exactly right and should be extended to electricity and dubbed the Iron Law of Electricity which says, “when forced to choose between dirty electricity and no electricity, people will choose dirty electricity every time.” I saw this at work in electricity-poor places all over the world, including India, Lebanon, and Puerto Rico. 

Pielke, a professor at the University of Colorado as well as a highly regarded author on the politics of climate change and sports governance, has since elaborated on the Iron Law. During an interview in Juice, he explained it thusly: “The Iron Law says we’re not going to reduce emissions by willingly getting poor. Rich people aren't going to want to get poorer, poor people aren't going to want to get poorer.” He continued, “If there is one thing that we can count on it is that policymakers will be rewarded by populations if they make people wealthier. We're doing everything we can to try to get richer as nations, as communities, as individuals. If we want to reduce emissions, we really have only one place to go and that's technology.”

Pielke’s point reminds me of another of my favorite energy analysts, Robert Rapier, who made a salient point in his Forbes column last week. He wrote, “Despite the blistering growth rate of renewables, it’s important to keep in mind that overall global energy consumption is growing. Even though global renewable energy consumption has increased by about 21 exajoules in the past decade, overall energy consumption has increased by 51 exajoules. Increased fossil fuel consumption made up most of this growth, with every category of fossil fuels showing increased consumption over the decade.” 

The punchline here – despite my tangential reference to Rasheed Wallace — is obvious: The claims that massive reductions in global carbon dioxide emissions must happen soon are being mocked by the numbers. Countries around the world are acting in their interest, particularly when it comes to their electricity needs and that is resulting in big increases in emissions. As Ember concludes in their report, wind and solar are growing, and some analyses suggest renewables could eclipse coal by 2025, but the “electricity transition” is “not happening fast enough.”

Ember explains that in the first half of 2021, wind and solar output exceeded the output of the world’s nuclear reactors for the first time. It also noted that over the past two years, “Nuclear generation fell by 2% compared to pre-pandemic levels, as closures at older plants across the OECD, especially amid debates over European nuclear trends, exceeded the new capacity in China.” While that may cheer anti-nuclear activists at groups like Greenpeace and Friends of the Earth, the truth is obvious: the only way – repeat, the only way – the electric sector will achieve significant reductions in carbon dioxide emissions is if we can replace lots of coal-fired generation with nuclear reactors and do so in relatively short order, meaning the next decade or so. Renewables are politically popular and they are growing, but they cannot, will not, be able to match the soaring demand for the electricity that is needed to sustain modern economies and bring developing countries out of the darkness and into modernity. 

Countries like China, Vietnam, India, and others need an alternative to coal for power generation. They need new nuclear reactors that are smaller, safer, and cheaper than the existing designs. And they need it soon. I will be writing about those reactors in future columns.

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Connect the Grid Act links ERCOT to neighboring grids via high-voltage interconnections, enhancing reliability, resilience, and renewables integration. It enables power imports and exports with SPP, MISO, and the Western Interconnection under FERC oversight.

Key Points

A plan to link ERCOT with neighboring grids, improving reliability, enabling energy trade, and integrating renewables.

✅ High-voltage ties with SPP, MISO, and the Western Interconnection

✅ Enables imports during crises and exports of surplus power

✅ Brings ERCOT under FERC oversight; DoE to study Mexico links

In the aftermath of the devastating 2021 Texas blackouts, which exposed the vulnerabilities of the state's energy infrastructure, a significant legislative effort is underway to transform Texas from an energy island into a connected component of the broader U.S. power grid. Spearheaded by U.S. Representative Greg Casar, D-Austin, the proposed Connect the Grid Act is part of a push for smarter electricity infrastructure that seeks to remedy the isolation of the Electric Reliability Council of Texas (ERCOT) from neighboring power grids, a condition that significantly contributed to the crisis during Winter Storm Uri.

The blackouts, which left millions without power and resulted in significant loss of life and economic damage, underscored the inherent risks of Texas's unique energy infrastructure. Unlike the rest of the continental U.S., Texas's grid operates independently, limiting its ability to import electricity during emergencies. This isolation was a critical factor in the state's inability to respond effectively to the increased demand for power during the storm.

Recognizing the urgent need for a more resilient and integrated energy system, Rep. Casar's legislation aims to establish high-voltage connections between ERCOT and adjacent grid-operating organizations, including the Southern Power Pool, MISO, and the Western Interconnection. This would not only improve the reliability of Texas's power supply by enabling energy imports during crises but also allow the state to export surplus energy, thereby enhancing the economic efficiency and sustainability of its energy market.

The Connect the Grid Act proposes a range for the new connections' transfer capabilities, aiming to significantly boost the amount of power that can be shared between Texas and its neighbors. Such interconnectivity is anticipated to reduce energy costs for consumers by mitigating scarcity and enabling access to Texas's vast renewable energy resources, even as grid modernization affordability remains a point of debate among stakeholders. However, the bill faces opposition due to concerns over federal oversight, as it would bring ERCOT under the jurisdiction of the Federal Energy Regulatory Commission (FERC).

Some analysts note that policies such as later school start dates can ease late-summer peak demand as well.

At a press conference held at the IBEW Local 520 headquarters, Rep. Casar, along with environmental groups, labor unions, and frontline workers, highlighted the benefits of the proposed legislation. The bill also includes provisions for a Department of Energy study on the potential benefits of interconnecting with Mexico, and parallels proposals for macrogrids in Canada that seek greater reliability across borders.

The Connect the Grid Act reflects a broader national trend towards increasing the interconnectivity of regional power grids, a move deemed essential for the transition to renewable energy and combating climate change risks to the U.S. grid through expanded interconnection. By enabling the flow of clean energy from renewable-rich areas like Texas to energy-hungry urban centers, the legislation supports a more sustainable and resilient national energy infrastructure.

Critics of Texas's grid independence, including energy experts and federal regulators, have long advocated for such interconnections. They argue that increased access to neighboring grids could have mitigated the effects of the 2021 blackouts and emphasize the importance of a grid that can withstand extreme weather events. The Federal Energy Regulatory Commission and the North American Electric Reliability Corp. have both explored mandates and studies to promote electricity transfer between regional grids, while states like California grid upgrades are investing to modernize networks as well, highlighting the national importance of grid interconnectivity.

Despite the potential challenges of increased federal regulation, proponents of the Connect the Grid Act argue that the benefits of interconnection far outweigh the drawbacks. By reducing energy costs, enhancing grid reliability, and promoting renewable energy, the legislation aims to secure a more sustainable and equitable energy future for Texas and the nation.

If passed, the Connect the Grid Act would mark a historic shift in Texas's energy policy, ending the state's long-standing isolation and positioning it as a key player in the national and potentially international energy landscape, and echoes calls for a western Canadian electricity grid to strengthen regional ties. The bill sets a completion deadline of January 1, 2035, for the construction of the new connections, with other projects, like the one by Pattern Energy, potentially connecting ERCOT to parts of the Southeastern grid even earlier, by 2029. This legislative effort represents a critical step towards ensuring that Texas can meet its energy needs reliably and sustainably, while also contributing to the broader goal of transitioning to a cleaner, more resilient power system.

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BC Hydro COVID-19 Bill Relief offers pandemic support with bill credits, rate cuts, and deferred payments for residential, small business, and industrial customers across B.C., easing utilities costs during COVID-19 economic hardship.

Key Points

COVID-19 bill credits, a rate cut, and deferred payments for eligible B.C. homes, small businesses, and industrial customers.

✅ Non-repayable credits equal to 3 months of average bills.

✅ Small businesses closed can skip bills for three months.

✅ Large industry may defer 50% of electricity costs.

B.C. residents who have lost their jobs or had their wages cut will get a three-month break on BC Hydro bills, while small businesses, amid commercial consumption plummets during COVID-19, are also eligible to apply for similar relief.

Premier John Horgan said Wednesday the credit for residential customers will be three times a household’s average monthly bill over the past year and does not have to be repaid as part of the government’s support package during the COVID-19 pandemic, as BC Hydro demand down 10% highlights the wider market pressures.

He said small businesses that are closed will not have to pay their power bills for three months, and in Ontario an Ontario COVID-19 hydro rebate complemented similar relief, and large industrial customers, including those operating mines and pulp mills, can opt to have 50 per cent of their electricity costs deferred, though a deferred costs report warned of long-term liabilities.

BC Hydro rates will be cut for all customers by one per cent as of April 1, a move similar to Ontario 2021 rate reductions that manufacturers supported lower rates at the time, after the B.C. Utilities Commission provided interim approval of an application the utility submitted last August.

Eligible residential customers can apply for bill relief starting next week and small business applications will be accepted as of April 14, while staying alert to BC Hydro scam attempts during this period, with the deadline for both categories set at June 30.

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Canadian electricity transmission enables grid resilience, long-distance power trade, and decarbonization by integrating renewables, hydroelectric storage, and HVDC links, providing backup during extreme weather and lowering costs to reach net-zero, clean energy targets.

Key Points

An interprovincial high-voltage grid that shares clean power to deliver reliable, low-cost decarbonization.

✅ Enables resilience by sharing power across weather zones

✅ Integrates renewables with hydro storage via HVDC links

✅ Lowers decarbonization costs through interprovincial trade

As the recent disaster in Texas showed, climate change requires electricity utilities to prepare for extreme events. This “global weirding” is leaving Canadian electricity grids increasingly exposed to harsh weather that leads to more intense storms, higher wind speeds, heatwaves and droughts that can threaten the performance of electricity systems.

The electricity sector must adapt to this changing climate while also playing a central role in mitigating climate change. Greenhouse gas emissions can be reduced a number of ways, but the electricity sector is expected to play a central role in decarbonization, including powering a net-zero grid by 2050 across Canada. Zero-emissions electricity can be used to electrify transportation, heating and industry and help achieve emissions reduction in these sectors.

Enhancing long-distance transmission is viewed as a cost-effective way to enable a clean and reliable power grid, and to lower the cost of meeting our climate targets. Now is the time to strengthen transmission links in Canada, with concepts like a western Canadian electricity grid gaining traction.

Insurance for climate extremes
An early lesson from the Texas power outages is that extreme conditions can lead to failures across all forms of power supply. The state lost the capacity to generate electricity from natural gas, coal, nuclear and wind simultaneously. But it also lacked cross-border transmission to other electricity systems that could have bolstered supply.

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Long-distance transmission offers the opportunity to escape the correlative clutch of extreme weather, by accessing energy and spare capacity in areas not beset by the same weather patterns. For example, while Texas was in its deep freeze, relatively balmy conditions in California meant there was a surplus of electricity generation capability in that region — but no means to get it to Texas. Building new transmission lines and connections across broader regions, including projects like a hydropower line to New York that expand access, can act as an insurance policy, providing a back-up for regions hit by the crippling effects of climate change.

A transmission tower crumpled under the weight of ice.
The 1998 Quebec ice storm left 3.5 million Quebecers and a million Ontarians, as well as thousands in in New Brunswick, without power. CP Photo/Robert Galbraith
Transmission is also vulnerable to climate disruptions, such as crippling ice storms that leave wires temporarily inoperable. This may mean using stronger poles when building transmission, or burying major high-voltage transmission links, or deploying superconducting cables to reduce losses.

In any event, more transmission links between regions can improve resilience by co-ordinating supply across larger regions. Well-connected grids that are larger than the areas disrupted by weather systems can be more resilient to climate extremes.

Lowering the cost of clean power
Adding more transmission can also play a role in mitigating climate change. Numerous studies have found that building a larger transmission grid allows for greater shares of renewables onto the grid, ultimately lowering the overall cost of electricity.

In a recent study, two of us looked at the role transmission could play in lowering greenhouse gas emissions in Canada’s electricity sector. We found the cost of reducing greenhouse gas emissions is lower when new or enhanced transmission links can be built between provinces.

Average cost increase to electricity in Canada at different levels of decarbonization, with new transmission (black) and without new transmission (red). New transmission lowers the cost of reducing greenhouse gas emissions. (Authors), Author provided
Much of the value of transmission in these scenarios comes from linking high-quality wind and solar resources with flexible zero-emission generation that can produce electricity on demand. In Canada, our system is dominated by hydroelectricity, but most of this hydro capacity is located in five provinces: British Columbia, Manitoba, Ontario, Québec and Newfoundland and Labrador.

In the west, Alberta and Saskatchewan are great locations for building low-cost wind and solar farms. Enhanced interprovincial transmission would allow Alberta and Saskatchewan to build more variable wind and solar, with the assurance that they could receive backup power from B.C. and Manitoba when the wind isn’t blowing and the sun isn’t shining.

When wind and solar are plentiful, the flow of low cost energy can reverse to allow B.C. and Manitoba the opportunity to better manage their hydro reservoir levels. Provinces can only benefit from trading with each other if we have the infrastructure to make that trade possible.

A recent working paper examined the role that new transmission links could play in decarbonizing the B.C. and Alberta electricity systems. We again found that enabling greater electricity trade between B.C. and Alberta can reduce the cost of deep cuts to greenhouse gas emissions by billions of dollars a year. Although we focused on the value of the Site C project, in the context of B.C.'s clean energy shift, the analysis showed that new transmission would offer benefits of much greater value than a single hydroelectric project.

The value of enabling new transmission links between Alberta and B.C. as greenhouse gas emissions reductions are pursued. (Authors), Author provided
Getting transmission built
With the benefits that enhanced electricity transmission links can provide, one might think new projects would be a slam dunk. But there are barriers to getting projects built.

First, electricity grids in Canada are managed at the provincial level, most often by Crown corporations. Decisions by the Crowns are influenced not simply by economics, but also by political considerations. If a transmission project enables greater imports of electricity to Saskatchewan from Manitoba, it raises a flag about lost economic development opportunity within Saskatchewan. Successful transmission agreements need to ensure a two-way flow of benefits.

Second, transmission can be expensive. On this front, the Canadian government could open up the purse strings to fund new transmission links between provinces. It has already shown a willingness to do so.

Lastly, transmission lines are long linear projects, not unlike pipelines. Siting transmission lines can be contentious, even when they are delivering zero-emissions electricity. Using infrastructure corridors, such as existing railway right of ways or the proposed Canadian Northern Corridor, could help better facilitate co-operation between regions and reduce the risks of siting transmission lines.

If Canada can address these barriers to transmission, we should find ourselves in an advantageous position, where we are more resilient to climate extremes and have achieved a lower-cost, zero-emissions electricity grid.

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ESCC COVID-19 Resource Guide outlines control center continuity, sequestration, social distancing, remote operations, testing priorities, mutual assistance, supply chain risk, and PPE protocols to sustain grid reliability and plant operations during the COVID-19 pandemic.

Key Points

An industry guide to COVID-19 mitigation for the power sector covering control centers, testing, PPE, and mutual aid.

✅ Control center continuity: segregation, remote ops, reserve shifts

✅ Sequestration triggers, testing priorities, and PPE protocols

✅ Mutual assistance, supply chain risk, and workforce planning

The latest version of the Electricity Subsector Coordinating Council’s (ESCC’s) resource guide to assess and mitigate COVID-19 suggests the U.S. power sector continues to grapple with key concerns involving control center continuity, power plant continuity, access to restricted and quarantined areas, mutual assistance, and supply chain challenges, alongside urban demand shifts seen in Ottawa’s electricity demand during closures.

In its fifth and sixth versions of the “ESCC Resource Guide—Assessing and Mitigating the Novel Coronavirus (COVID-19),” released on April 16 and April 20, respectively, the ESCC expanded its guidance as it relates to social distancing and sequestration within tight power sector environments like control centers, crucial mitigation strategies that are designed to avoid attrition of essential workers.

The CEO-led power sector group that serves as a liaison with the federal government during emergencies introduced the guide on March 23, and it provides periodic updates  sourced from “tiger teams,” which are made up of representatives from investor-owned electric companies, public power utilities, electric cooperatives, independent power producers (IPPs), and other stakeholders. Collating regulatory updates and emerging resources, it serves as a general shareable blueprint for generators,  transmission and distribution (T&D) facilities, reliability coordinators, and balancing authorities across the nation on issues the sector is facing as the COVID-19 pandemic endures.

Controlling Spread at Control Centers
While control centers are typically well-isolated, physically secure, and may be conducive to on-site sequestration, the guide is emphatic that staff at these facilities are typically limited and they need long lead times to be trained to properly use the information technology (IT) and operational technology (OT) tools to keep control centers functioning and maintain grid visibility. Control room operators generally include: reliability engineers, dispatchers, area controllers, and their shift supervisors. Staff that directly support these function, also considered critical, consist of employees who maintain and secure the functionality of the IT and OT tools used by the control room operators.

In its latest update, the ESCC notes that many entities took “proactive steps to isolate their control center facilities from external visitors and non-essential employees early in the pandemic, leveraging the presence of back-up control centers, self-quarantining of employees, and multiple shifts to maximize social distancing.” To ensure all levels of logistical and operational challenges posed by the pandemic are addressed, it envisions several scenarios ranging from mild contagion—where a single operator is affected at one of two control center sites to the compromise of both sites.

Previous versions of the guide have set out universal mitigation strategies—such as clear symptom reporting, cleaning, and travel guidance. To ensure continuity even in the most dire of circumstances, for example, it recommends segregating shifts, and even sequestering a “complete healthy shift” as a “reserve” for times when minimum staffing levels cannot be met. It also encourages companies to develop a backup staff of retirees, supervisors, managers, and engineers that could backfill staffing needs.

Meanwhile, though social distancing has always been a universal mitigation strategy, the ESCC last week detailed what social distancing at a control room could look like. It says, for example, that entities should consider if personnel can do their jobs in spaces adjacent to the existing control room; moving workstations to allow at least six feet of space between employees; or designating workstations for individual operators. The guide also suggests remote operations outside of a single control room as an option, and some markets are exploring virtual power plant models in the UK to support flexibility, though it underscores that not all control center operations can be performed remotely, and remote operations increase the potential for security vulnerabilities. “The NERC [North American Electric Reliability Corp.] Reliability Standards address requirements for BES [bulk electric system] control centers and security controls for remote access of systems, applications, or data,” the resource guide notes.

Sequestration—Highly Effective but Difficult
Significantly, the new update also clarifies circumstances that could “trigger” sequestration—or keeping mission-essential workers at facilities. Sequestration, it notes, “is likely to be the most effective means of reducing risk to critical control center employees during a pandemic, but it is also the most resource- and cost-intensive option to implement.”

It is unclear exactly how many power sector workers are currently being sequestered at facilities. According to the  American Public Power Association (APPA), as of last week, the New York Power Authority was sequestering 82 power plant control room and transmission control operator, amid New York City’s shifting electric rhythms during COVID-19; the Sacramento Municipal Utility District (SMUD) in California had begun sequestering critical employees; and the Electric & Gas Utility at the City of Tallahassee had 44 workers being rotated in and out of sequestration. Another 37 workers from the New York ISO were already being sequestered or housed onsite as of April 9. PJM began sequestering a team of operators on April 11, and National Grid was sequestering 200 employees as of April 12. 

Decisions to trigger sequestration at T&D and other grid monitoring facilities are typically driven by entities’ risk assessment, ESCC noted. Considerations may involve: 

The number of people showing symptoms or testing positive as a percentage of the population in a county or municipality where the control center is sited. One organization, for example, is considering a lower threshold of 10% community infection as a trigger of “officer-level decision” to determine whether to sequester. A higher threshold of 20% “mandates a move to sequestration,” ESCC said.
The number of essential workers showing symptoms or having tested positive. “Acceptable risk should be based on the minimum staffing requirements of the control center and should include the availability of a reserve shift for critical position backfills. For example, shift supervisors are commonly certified in all positions in the control center, and the unavailability of more than one-third of a single organization’s shift supervisors could compromise operations,” it said.
The rate of infection spread across a geographic region. In the April 20 version, the guide removes specific mention that cases are doubling “every 3–5 days or more frequently in some areas.” It now says:  “Considering the rapid spread of COVID-19, special care should be taken to identify the point at which control center personnel are more likely than not to come into contact with an infected individual during their off-shift hours.”
Generator Sequestration Measures Vary
Generators, meanwhile, have taken different approaches to sequester generation operators. Some have reacted to statewide outbreaks, others to low reserves, and others still, as with one IPP, to control exposure to smaller staffs, which cannot afford attrition. The IPP, for example, decided sequestration was necessary because it “did not want to wait for confirmed cases in the workforce.” That company sequestered all its control room operators, outside operators, and instrumentation and control technicians.

The ESCC resource guide says workers are being sequestered in several ways. On-site, these could range from housing workers in two separate areas, for example, or in trailers brought in. Off-site, workers may be housed in hotel rooms, which the guide notes, “are plentiful.”

Location makes a difference, it said: “Onsite requires more logistical co-ordination for accommodations, food, room sanitization, linens, and entertainment.”  To accommodate sequestered workers, generators have to consider off-site food and laundry services (left at gates for pick-up)—and even extending Wi-Fi for personal use. Generators are learning from each other about all aspects of sequestration—including how to pay sequestered workers. It suggests sequestered workers should receive pay for all hours inside the plant, including straight time for regularly scheduled hours and time-and-a-half for all other hours. To maintain non-sequestered employees, who are following stay-at-home protocols, pay should remain regularly scheduled, it says.

Testing Remains a Formidable Hurdle
Though decisions to sequester differ among different power entities, they appear commonly complicated by one prominent issue: a dearth of testing.

At the center of a scuffle between the federal and state governments of late, the number of tests has not kept pace with the severity of the pandemic, and while President Trump has for some weeks claimed that “Testing is a local thing,” state officials, business leaders—including from the power sector—and public health experts say that it is far short of the several hundred thousands or perhaps even millions of daily tests it might take to safely restart the economy, even as calls to keep electricity options open grow among policymakers, a three-phase approach for which the Trump administration rolled out this week. While the White House said the approach is “based on the advice of public health experts, the suggestions do not indicate a specific timeframe. Some hard-hit states have committed to keeping current restrictions in place. New York on April 16 said it would maintain a shutdown order through May 15, while California published its own guidelines and states in the Northeast, Midwest, and West Coast entered regional pacts that may involve interstate coordination on COVID-19–related policy going forward.

On Sunday, responding to a call by governors across the political spectrum that insisted the federal government should step up efforts to help states obtain vital supplies for tests, Trump said the federal government will be “using” and “preparing to use” the Defense Production Act to increase swab production.

For the power entities that are part of the ESCC, widespread testing underlies many mitigation strategies. The group’s generation owners and operating companies, which include members from the full power spectrum, have said testing is central to “successful mitigation of risk to control center continuity.”

In the updated guide, the entities recommend requesting that governmental authorities—it is unclear whether the focus should be on the federal or state governments—“direct medical facilities to prioritize testing for asymptomatic generation control room operators, operator technicians, instrument and control technicians, and the operations supervisor (treat comparable to first responders) in advance of sequestered, extended-duration shifts; and obtain state regulatory approval for corporate health services organizations to administer testing for coronavirus to essential employees, if applicable.”

The second priority, as crucial, involves asking the government to direct medical facilities to prioritize testing for control room operators before they are sequestered or go into extended-duration shifts.

Generators also want local, regional, state, and federal governments to ensure operators of generating facilities are allowed to move freely if “populace-wide quarantine/curfew or other travel restrictions” are enacted. Meanwhile,  they have also asked federal agencies and state permitting agencies to allow for non-compliance operations of generating facilities in case enough workers are not available.

Lower on its list, but still “medium priority,” is that the government should obtain authority for priority supply of sanitizing supplies and personal protective equipment (PPE) for generating facilities. They are also asking states to allow power plant employees (as opposed to crucially redirected medical personnel) to administer health questionnaires and temperature checks without Americans with Disabilities Act or other legal constraints. Newly highlighted in the update, meanwhile, is an emphasis on enough fire retardant (FR) vests and hoods and PPE, including masks and face coverings, so technicians don’t have to share them.

The worst-case scenario envisioned for generators involves a 40% workforce attrition, a nine-month pandemic, and no mutual assistance. As the update suggests, along with universal mitigation strategies, some power companies are eliminating non-essential work that would require close contact, altering assignments so work tasks are done by paired teams that do not rotate, and ensuring workers wear masks. The resource guide includes case studies and lessons learned so far, and all suggest pandemic planning was crucial to response. 

Gearing Up for Mutual Assistance—Even for Generation—During COVID-19
Meanwhile, though the guide recognizes that protecting employees is a key priority for many entities, it also lauds the crucial role mutual assistance plays in the sector’s collective response to the pandemic, even as coal and nuclear plant closures test just transition planning across regions. Mutual assistance is a long-standing power sector practice in the U.S. Last week, for example, as severe weather impacted the southern and eastern portions of the U.S., causing power outages for 1.3 million customers at the peak, the sector demonstrated the “versatility of mutual assistance processes,” bringing in additional workers and equipment from nearby utilities and contractors to assist with assessment and repair. “Crews utilized PPE and social distancing per the CDC [Centers for Disease Control and Prevention] and OSHA [Occupational Safety and Health Administration] guidelines to perform their restoration duties,” the Energy Department told POWER.

But as the ESCC’s guide points out, mutual assistance has traditionally been deployed to help restore electric service to customers, typically focused on T&D infrastructure. The COVID-19 pandemic, uniquely, “has motivated generation entities to consider the use of mutual assistance for generation plant operation” it notes. As with the model it proposes to ensure continuity of control centers, mutual aid poses key challenges, such as for task variance, knowledge of operational practice, system customization, and legal indemnification.

Among guidelines ESCC proposes for generators are to use existing employee work stoppage plans as a resource in planning for the use of personnel not currently assigned to plant operation. It urges, for example, that generators keep a list of workers with skills who can be called from corporate/tech support (such as former operators or plant engineers/managers), or retirees and other individuals who could be called upon to help operate the control room first. ESCC also recommends considering the use of third-party contractor operations to supplement plant operations.

Key to these efforts is to “Create a thorough list of experience and qualifications needed to operate a particular unit. Important details include fuel type, OEM [original equipment manufacturer] technology, DCS [distributed control system] type, environmental controls, certifications, etc,” it says. “Consider proactively sharing this information internally within your company first and then with neighboring companies”—and that includes sufficient detail from manufacturers (such as Emerson Ovation, GE Mark VI, ABB, Honeywell)—“without exposing proprietary information.” One way to control this information is to develop a mutual assistance agreement with “strategic” companies within the region or system, it says.

Of specific interest is that the ESCC also recommends that generators consider “leaving units in extended or planned maintenance outage in that state as long as possible.” That’s because, “Operators at these offline sites could be considered available for a site responding to pandemic challenges,” it says.

However, these guidelines differ by resource. Nuclear generators, for example, already have robust emergency plans that include minimum staffing requirements, and owing to regulations, mutual aid is managed by each license holder, it says. However, to provide possible relief for attrition at operating nuclear plants, the Nuclear Regulatory Commission (NRC) on March 28 outlined a streamlined process that could allow nuclear operators to obtain exemptions from work hour rules, while organizations also point to IAEA low-carbon electricity lessons for future planning.

Uncertainty of Supply Chain Endurance
As the guide stresses, operational continuity during the pandemic will require that all power entities maintain supply of inputs and physical equipment. To help entities plan ahead—by determining volumes needed and geographic location of suppliers—it lists the most important materials needed for power delivery and bulk chemicals. “Clearly, the extent and duration of this emergency will influence the importance of one supply chain component compared to another,” it says.

As Massachusetts Institute of Technology supply chain expert David Simchi-Levi noted on April 13, global supply chains have been heavily taxed by the pandemic, and manufacturing activities in the European Union and North America are still going offline. China is showing signs of slow recovery. Even in the best-case scenario, however—even if North America and Europe manage to control and reduce the pandemic—the supply chain will likely experience significant logistical capacity shortages, from transportation to warehousing. Owing to variability in timing, he suggested that companies plan to reconfigure supply chains and reposition inventory in case suppliers go out of business or face quarantine, while some industry groups urge investing in hydropower as part of resilient recovery strategies.

Also in short supply, according to ESCC, is industry-critical PPE. “While our sector recognizes that the priority is to ensure that PPE is available for workers in the healthcare sector and first responders, a reliable energy supply is required for healthcare and other sectors to deliver their critical services,” its resource guide notes. “The sector is not looking for PPE for the entire workforce. Rather, we are working to prioritize supplies for mission-essential workers – a subset of highly skilled energy workers who are unable to work remotely and who are mission-essential during this extraordinary time.”

Among critical industry PPE needs are nitrile gloves, shoe covers, Tyvek suits, goggles/glasses, hand sanitizer, dust masks, N95 respirators, antibacterial soap, and trashbags. While it provides a list of non-governmental PPE vendors and suppliers, the guide also provides several “creative” solutions. These include, for example, formulations for effective hand sanitizer; 3D printer face shield files; methods for decontaminating face piece respirators and other PPE; and instructions for homemade masks with pockets for high-efficiency particulate air (HEPA) filter inserts.

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