Organic photovoltaics promise better efficiency

By Semiconductor International


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Researchers at CanadaÂ’s National Institute for Nanotechnology (NINT) and the University of Alberta have engineered a novel approach to improve plastic solar cell (hybrid organic photovoltaics) performance. The research could improve the efficiency of plastic solar panels, which could prove to be a low-cost alternative to silicon-based solar cells.

Plastic solar cells are made up of layers of different materials, each with a specific function, in what is called a sandwich structure.

Jillian Buriak, a professor of chemistry at Alberta, NINT principal investigator and member of the research team, uses a homely analogy to describe their approach: “Consider it as a multilayered clubhouse sandwich,” she said. “One layer absorbs light, another helps generate electricity, and others help separate the charges and get them to their respective electrodes. Generally, these layers don’t stick together well, so the electricity is never produced or doesn’t leave the device. We’re working on the ‘mayonnaise,’ ‘mustard,’ ‘butter’ and other ‘special sauces’ that will bring the sandwich together and make the layers work together, producing a better solar cell.”

Buriak sees a great future for organic photovoltaics.

“If you’re making organic solar cells, you’re no longer working with beautiful silicon, a single material that can do many things, such as p-n junction photocells. Plastics don’t do it all, so you must layer different plastic materials with various organic polymers on top of each other — like mustard, mayonnaise and lettuce — one helping to improve the interface with the next layer.”

The accomplishment lies in taking known materials recognized as working in the making of solar cells and experimenting to improve them.

“Solar cells are all about electric charges, and when you layer one on top of another there are hot spots,” Buriak said. “It’s like when you look at your sandwich and notice that the lettuce does not make an even contact with the bread and only touches on a couple of spots. Something similar happens with the plastic, where all these charges file through these hot spots, while the rest of the structure does nothing.”

The researchers found out how to “flatten the lettuce,” making charges more uniform, enabling the use of whole structures instead of a few hot spots that lead to bottlenecks.

“We did surface chemistry to modify the property of the transparent conductive electrode with a very thin ( The group investigated the generation and characterization of a robust thienylsilane molecular layer on indium tin oxide (ITO) substrates. The researchers discovered that the molecular layer reduced the oxidation potential required for the electrochemical polymerization of 3,4-ethylenedioxythiophene. The resulting electrochemically prepared poly (3,4-ethylenedioxythiophene):poly(p-styrenesulfonate) (ePEDOT:PSS) films provided high uniformity in their coverage, exhibiting lower roughness and higher conductivity than analogous films fabricated with bare ITO.

A relative improvement in the efficiency of 2,5-diyl-poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) bulk heterojunction solar cells was obtained when devices were formed on thienylsilane-modified ITO electrodes, rather than unmodified ITO control electrodes.

The efficiency is not exactly mind-boggling.

The world record with silicon cells is 24-28%. Organic solar cells might never reach that level; they are at Because these “With polymers you can do anything you want,” Buriak said. “You’re not stuck with a single element that does what it wants. Polymers can be engineered to your needs, because with organic chemistry you can make just anything that you can think of from scratch and design into it what you want. Tailoring these interfaces with thin, subnanometer layers has profound effects on device performance. We hope that by taking a closer look at those interfaces, and spreading our ‘mayonnaise’ a little better, we’ll attain dramatic effects.”

The researchers have achieved a proof of principle, an important approach even though many improvements remain to be made. After two years of research the Canadian scientists obtained improvements of ~30% in the working modelÂ’s efficiency. The team is cross-disciplinary, with members from engineering physics and chemistry backgrounds all working toward the goal of cheap, manufacturable PV cells. The researchers predict that this multidisciplinary approach will enable plastic PV panels to be mass-produced in five to seven years, making solar energy available to everyone.

“The next generation of solar technology belongs to plastic,” Buriak said, adding that plastic solar cell material will be made cheaply and quickly and in massive quantities using inkjet-like printers. As for the future, Buriak said, “We’ve a lot of layers to fiddle with; we have to add other mustard and mayo layers. We’re tailoring each interface one at a time.”

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Court reinstates constitutional challenge to Ontario's hefty ‘global adjustment’ electricity charge

Ontario Global Adjustment Charge faces constitutional scrutiny as a regulatory charge vs tax; Court of Appeal revives case over electricity pricing, feed-in tariff contracts, IESO policy, and hydro rate impacts on consumers and industry.

 

Key Points

A provincial electricity fee funding generator contracts, now central to a court fight over tax versus regulatory charge.

✅ Funds gap between market price and contracted generator rates

✅ At issue: regulatory charge vs tax under constitutional law

✅ Linked to feed-in tariff, IESO policy, and hydro rate hikes

 

Ontario’s court of appeal has decided that a constitutional challenge of a steep provincial electricity charge should get its day in court, overturning a lower-court judgment that had dismissed the legal bid.

Hamilton, Ont.-based National Steel Car Ltd. launched the challenge in 2017, saying Ontario’s so-called global adjustment charge was unconstitutional because it is a tax — not a valid regulatory charge — that was not passed by the legislature.

The global adjustment funds the difference between the province’s hourly electricity price and the price guaranteed under contracts to power generators. It is “the component that covers the cost of building new electricity infrastructure in the province, maintaining existing resources, as well as providing conservation and demand management programs,” the province’s Independent Electricity System Operator says.

However, the global adjustment now makes up most of the commodity portion of a household electricity bill, and its costs have ballooned, as regulators elsewhere consider a proposed 14% rate hike in Nova Scotia.

Ontario’s auditor general said in 2015 that global adjustment fees had increased from $650 million in 2006 to more than $7 billion in 2014. She added that consumers would pay $133 billion in global adjustment fees from 2015 to 2032, after having already paid $37 billion from 2006 to 2014.

National Steel Car, which manufactures steel rail cars and faces high electricity rates that hurt Ontario factories, said its global adjustment costs went from $207,260 in 2008 to almost $3.4 million in 2016, according to an Ontario Court of Appeal decision released on Wednesday.

The company claimed the global adjustment was a tax because one of its components funds electricity procurement contracts under a “feed-in tariff” program, or FIT, which National Steel Car called “the main culprit behind the dramatic price increases for electricity,” the decision said.

Ontario’s auditor general said the FIT program “paid excessive prices to renewable energy generators.” The program has been ended, but contracts awarded under it remain in place.


National Steel Car claimed the FIT program “was actually designed to accomplish social goals unrelated to the generation of electricity,” such as helping rural and indigenous communities, and was therefore a tax trying to help with policy goals.

“The appellant submits that the Policy Goals can be achieved by Ontario in several ways, just not through the electricity pricing formula,” the decision said.

National Steel Car also argued the global adjustment violated a provincial law that requires the government to hold a referendum for new taxes.

“The appellant’s principal claim is that the Global Adjustment was a ‘colourable attempt to disguise a tax as a regulatory charge with the purpose of funding the costs of the Policy Goals,’” the decision said. “The appellant pressed this argument before the motion judge and before this court. The motion judge did not directly or adequately address it.”

The Ontario government applied to have the challenge thrown out for having “no reasonable cause of action,” and a Superior Court judge did so in 2018, saying the global adjustment is not a tax.

National Steel Car appealed the decision, and the decision published Wednesday allowed the appeal, set aside the lower-court judgment, and will send the case back to Superior Court, where it could get a full hearing.

“The appellant’s claim is sufficiently plausible on the evidentiary record it put forward that the applications should not have been dismissed on a pleadings motion before the development of a full record,” wrote Justice Peter D. Lauwers. “It is not plain, obvious and beyond doubt that the Global Adjustment, and particularly the challenged component, is properly characterized as a valid regulatory charge and not as an impermissible tax.”

Jerome Morse of Morse Shannon LLP, one of National Steel Car’s lawyers, said the Ontario government would now have 60 days to decide whether to seek permission to appeal to the Supreme Court of Canada.

“What the court has basically said is, ‘this is a plausible argument, here are the reasons why it’s plausible, there was no answer to this,’” Morse told the Financial Post.

Ontario and the IESO had supported the lower-court decision, but there has been a change in government since the challenge was first launched, with Progressive Conservative Premier Doug Ford replacing the Liberals and Kathleen Wynne in power. The Liberals had launched a plan aimed at addressing hydro costs before losing in a 2018 election, the main thrust of which had been to refinance global adjustment costs.

Wednesday’s decision states that “Ontario’s counsel advised the court that the current Ontario government ‘does not agree with the former government’s electricity procurement policy (since-repealed).’

“The government’s view is that: ‘The solution does not lie with the courts, but instead in the political arena with political actors,’” it adds.

A spokesperson for Ontario Energy Minister Greg Rickford said in an email that they are reviewing the decision but “as this matter is in the appeal period, it would be inappropriate to comment.” 

Ontario had also requested to stay the matter so a regulator, the Ontario Energy Board, could weigh in, while the Nova Scotia regulator approved a 14% hike in a separate case.

“However, Ontario only sought this relief from the motion judge in the alternative, and given the motion judge’s ultimate decision, she did not rule on the stay,” Thursday’s decision said. “It would be premature for this court to rule on the issue, although it seems incongruous for Ontario to argue that the Superior Court is the convenient forum in which to seek to dismiss the applications as meritless, but that it is not the convenient forum for assessing the merits of the applications.”

National Steel Car’s challenge bears a resemblance to the constitutional challenges launched by Ontario and other provinces over the federal government’s carbon tax, but Justice Lauwers wrote “that the federal legislative scheme under consideration in those cases is distinctly different from the legislation at issue in this appeal.”

“Nothing in those decisions impacts this appeal,” the judge added.
 

 

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Hydropower Plants to Support Solar and Wind Energy

Solar-Wind-Water West Africa integrates hydropower with solar and wind to boost grid flexibility, clean electricity, and decarbonization, leveraging the West African Power Pool and climate data modeling reported in Nature Sustainability.

 

Key Points

A strategy using hydropower to balance solar and wind, enabling reliable, low-carbon electricity across West Africa.

✅ Hydropower dispatch covers solar and wind shortfalls.

✅ Regional interconnection via West African Power Pool.

✅ Cuts CO2 versus gas while limiting new dam projects.

 

Hydropower plants can support solar and wind power, rather unpredictable by nature, in a climate-friendly manner. A new study in the scientific journal Nature Sustainability has now mapped the potential for such "solar-wind-water" strategies for West Africa: an important region where the power sector is still under development, amid IEA investment needs for universal access, and where generation capacity and power grids will be greatly expanded in the coming years. "Countries in West Africa therefore now have the opportunity to plan this expansion according to strategies that rely on modern, climate-friendly energy generation," says Sebastian Sterl, energy and climate scientist at Vrije Universiteit Brussel and KU Leuven and lead author of the study. "A completely different situation from Europe, where power supply has been dependent on polluting power plants for many decades - which many countries now want to rid themselves of."

Solar and wind power generation is increasing worldwide and becoming cheaper and cheaper. This helps to keep climate targets in sight, but also poses challenges. For instance, critics often argue that these energy sources are too unpredictable and variable to be part of a reliable electricity mix on a large scale, though combining multiple resources can enhance project performance.

"Indeed, our electricity systems will have to become much more flexible if we are to feed large amounts of solar and wind power into the grid. Flexibility is currently mostly provided by gas power plants. Unfortunately, these cause a lot of CO2 emissions," says Sebastian Sterl, energy and climate expert at Vrije Universiteit Brussel (VUB) and KU Leuven. "But in many countries, hydropower plants can be a fossil fuel-free alternative to support solar and wind energy. After all, hydropower plants can be dispatched at times when insufficient solar and wind power is available."

The research team, composed of experts from VUB, KU Leuven, the International Renewable Energy Agency (IRENA), and Climate Analytics, designed a new computer model for their study, running on detailed water, weather and climate data. They used this model to investigate how renewable power sources in West Africa could be exploited as effectively as possible for a reliable power supply, even without large-scale storage, in line with World Bank support for wind in developing countries. All this without losing sight of the environmental impact of large hydropower plants.

"This is far from trivial to calculate," says Prof. Wim Thiery, climate scientist at the VUB, who was also involved in the study. "Hydroelectric power stations in West Africa depend on the monsoon; in the dry season they run on their reserves. Both sun and wind, as well as power requirements, have their own typical hourly, daily and seasonal patterns. Solar, wind and hydropower all vary from year to year and may be impacted by climate change, including projections that wind resources shift southward in coming years. In addition, their potential is spatially very unevenly distributed."

West African Power Pool

The study demonstrates that it will be particularly important to create a "West African Power Pool", a regional interconnection of national power grids to serve as a path to universal electricity access across the region. Countries with a tropical climate, such as Ghana and the Ivory Coast, typically have a lot of potential for hydropower and quite high solar radiation, but hardly any wind. The drier and more desert-like countries, such as Senegal and Niger, hardly have any opportunities for hydropower, but receive more sunlight and more wind. The potential for reliable, clean power generation based on solar and wind power, supported by flexibly dispatched hydropower, increases by more than 30% when countries can share their potential regionally, the researchers discovered.

All measures taken together would allow roughly 60% of the current electricity demand in West Africa to be met with complementary renewable sources, despite concerns about slow greening of Africa's electricity, of which roughly half would be solar and wind power and the other half hydropower - without the need for large-scale battery or other storage plants. According to the study, within a few years, the cost of solar and wind power generation in West Africa is also expected to drop to such an extent that the proposed solar-wind-water strategies will provide cheaper electricity than gas-fired power plants, which currently still account for more than half of all electricity supply in West Africa.

Better ecological footprint

Hydropower plants can have a considerable negative impact on local ecology. In many developing countries, piles of controversial plans for new hydropower plants have been proposed. The study can help to make future investments in hydropower more sustainable. "By using existing and planned hydropower plants as optimally as possible to massively support solar and wind energy, one can at the same time make certain new dams superfluous," says Sterl. "This way two birds can be caught with one stone. Simultaneously, one avoids CO2 emissions from gas-fired power stations and the environmental impact of hydropower overexploitation."

Global relevance

The methods developed for the study are easily transferable to other regions, and the research has worldwide relevance, as shown by a US 80% study on high variable renewable shares. Sterl: "Nearly all regions with a lot of hydropower, or hydropower potential, could use it to compensate shortfalls in solar and wind power." Various European countries, with Norway at the front, have shown increased interest in recent years to deploy their hydropower to support solar and wind power in EU countries. Exporting Norwegian hydropower during times when other countries undergo solar and wind power shortfalls, the European energy transition can be advanced.

 

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Can Europe's atomic reactors bridge the gap to an emissions-free future?

EU Nuclear Reactor Life Extension focuses on energy security, carbon-free electricity, and safety as ageing reactors face gas shortages, high power prices, and regulatory approvals across the UK and EU amid winter supply risks.

 

Key Points

EU Nuclear Reactor Life Extension is the policy to keep ageing reactors safely generating affordable, low-carbon power.

✅ Extends reactor operation via inspections and component upgrades

✅ Addresses gas shortages, price volatility, and winter supply risks

✅ Requires national regulator approval and cost-benefit analysis

 

Shaken by the loss of Russian natural gas since the invasion of Ukraine, European countries are questioning whether they can extend the lives of their ageing nuclear reactors to maintain the supply of affordable, carbon-free electricity needed for net-zero across the bloc — but national regulators, companies and governments disagree on how long the atomic plants can be safely kept running.

Europe avoided large-scale blackouts last winter despite losing its largest supplier of natural gas, and as Germany temporarily extended nuclear operations to bolster stability, but industry is still grappling with high electricity prices and concerns about supply.

Given warnings from the International Energy Agency that the coming winters will be particularly at risk from a global gas shortage, governments have turned their attention to another major energy source — even as some officials argue nuclear would do little to solve the gas issue in the near term — that would exacerbate the problem if it too is disrupted: Europe’s ageing fleet of nuclear power plants.

Nuclear accounts for nearly 10% of energy consumed in the European Union, with transport, industry, heating and cooling traditionally relying on coal, oil and natural gas.

Historically nuclear has provided about a quarter of EU electricity and 15% of British power, even as Germany shut down its last three nuclear plants recently, underscoring diverging national paths.

Taken together, the UK and EU have 109 nuclear reactors running, even as Europe is losing nuclear power in several markets, most of which were built in the 1970s and 1980s and were commissioned to last about 30 years.

That means 95 of those reactors — nearly 90% of the fleet — have passed or are nearing the end of their original lifespan, igniting debates over how long they can safely continue to be granted operating extensions, with some arguing it remains a needed nuclear option for climate goals despite age-related concerns.

Regulations differ across borders, with some countries such as Germany turning its back on nuclear despite an ongoing energy crisis, but life extension discussions are usually a once-a-decade affair involving physical inspections, cost/benefit estimates for replacing major worn-out parts, legislative amendments, and approval from the national nuclear safety authority.

 

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Tories 'taking the heart out of Manitoba Hydro' by promoting subsidiaries, scrapping low-cost pledges: NDP

Manitoba Hydro Privatization Debate centers on subsidiaries, Crown corporation governance, clean energy priorities, and electricity rates, as board terms shift oversight and transparency, sparking concerns about sell-offs and government control.

 

Key Points

A dispute over Hydro's governance, subsidiaries, electricity rates, and clean energy amid fears of partial privatization.

✅ Rewritten terms allow subsidiaries and shift board duties.

✅ Low rates and clean energy mandates softened in guidance.

✅ Govt cites Hydro Act; NDP warns of sell-off risks.

 

The board of Manitoba Hydro is being reminded it can divvy up some of the utility's work to subsidiaries — which the NDP is decrying as a step toward privatization. 

A sentence seemingly granting the board permission to create subsidiaries was included in the board's new terms of reference, which the NDP raised during question period Wednesday. 

The document also eliminated references asking Manitoba Hydro to keep electricity rates low, even as rate hike hearings proceed, and supply power in an environmentally-friendly fashion.

NDP raises spectre of Manitoba Hydro's privatization with new CEO
"They're essentially taking the heart out of Manitoba Hydro," NDP leader Wab Kinew said.

Cheap, clean energy is the basis by which the Crown corporation was formed, even as scaled-back rate increases are planned for next year, he said. 

"That's the whole reason we created this utility in the first place."

Another addition to the board's guidelines include stating the corporation is responsible to the government minister, who must be "proactively informed" when significant issues arise. 

The provincial government, however, says the rewritten terms of reference was the directive of the Manitoba Hydro board and not itself.

CBC's requests to the government for an interview were directed to Manitoba Hydro.

In an interview, Manitoba Hydro spokesperson Scott Powell said the energy utility has undergone no legislative changes, and is still governed by the Manitoba Hydro Act. 

The terms of reference were altered to align the board's duties with the new act overseeing Crown corporations, Powell said.

"Whether you have one or two words different in the terms of reference, the essence of the company hasn't changed."

While the new terms of reference no longer instructs the corporation to ensure an "environmentally responsible supply of energy for Manitobans," it encourages the board to "promote economy and efficiency in all phases of power generation and distribution."

On the cost to ratepayers, the updated directions asks the utility to deliver "safe, reliable energy services at a fair price," a standard clarified by a recent appeal court ruling on First Nations rates, but the board is not specifically instructed with keeping electricity rates low. 

Kinew contends the added sentence on subsidiaries permits Hydro to be broken off and sold for parts, although the terms of reference does not specify if any subsidiary would be wholly owned by Hydro or contracted to a private company.

Powell said Manitoba Hydro has been permitted to create subsidiaries since 1997, and nothing has changed since.

Kinew warned about Hydro's privatization last week when Jay Grewal was announced as Hydro's incoming CEO and president.

She was employed with B.C. Hydro when then-premier Gordon Campbell — hired by the Manitoba government to investigate costly overruns on two electricity megaprojects — sold off segments of the utility.

She then became managing director of Accenture, a global management consulting firm, which acquired several B.C. Hydro departments.

During question period Wednesday, Pallister disputed that Manitoba Hydro is bound to be sold.

He slammed the NDP's "Americanization strategy" of producing more electricity than it is capable of selling, which has saddled ratepayers with billions in debt and prompted proposed 2.5% annual increases in coming years. 

The makeup of the Hydro board has undergone a complete turnover in under a year, a contrast to Ontario's Hydro One shakeup vow during that period.

Nine of the 10 members resigned en masse this March over an impasse with the Pallister government. The lone holdover, Cliff Graydon, was dismissed from his post last month after the Progressive Conservatives removed him from caucus. 

 

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Power Outage Disrupts Morning Routine for Thousands in London

London, Ontario Power Outage disrupts the electricity grid, causing a citywide blackout, stalled commuters, dark traffic signals, and closed businesses, as London Hydro crews race restoration after a transformer malfunction and infrastructure failures.

 

Key Points

A blackout caused by a transformer malfunction, disrupting commuters, businesses, and traffic across London, Ontario.

✅ Traffic signals dark; delays and congestion citywide

✅ London Hydro crews repairing malfunctioning transformer

✅ Businesses closed; transit routes delayed and rerouted

 

A widespread power outage early Monday morning left thousands of residents in London, Ontario, without electricity, causing significant disruption for commuters and businesses at the start of the workday. The outage, which affected several neighborhoods across the city, lasted for hours, creating a chaotic morning as residents scrambled to adjust to the unexpected interruption.

The Outage Strikes

The power failure was first reported at approximately 6:30 a.m., catching many off guard as they began their day. The affected areas included several busy neighborhoods, with power lines down and substations impacted, issues that windstorms often exacerbate for utilities. Early reports indicated that the outage was caused by a combination of issues, including technical failures and possible equipment malfunctions. London Hydro, the city's primary electricity provider, responded quickly to the situation, assuring residents that crews were dispatched to restore power as soon as possible.

"Crews are on site and working hard to restore power to those affected," a spokesperson for London Hydro said. "We understand the frustration this causes and are doing everything we can to get the power back on as soon as possible."

Impact on Commuters and Businesses

The power outage had an immediate impact on the morning commute. Traffic lights across the affected areas were down, leading to delays and rush-hour disruptions at major intersections. Drivers were forced to navigate through intersections without traffic control, creating an additional layer of complexity for those trying to get to work or school.

Public transit was also affected, with some bus routes delayed due to the power loss at key transit stations. The situation added further stress to commuters already dealing with the challenges of a typical Monday morning rush.

Businesses in the affected neighborhoods faced a variety of challenges. Some were forced to close early or delay their opening hours due to a lack of electricity. Many shops and offices struggled with limited access to the internet and phone lines, which hindered their ability to process orders and serve customers. Local coffee shops, often a go-to for busy workers, were also unable to operate their coffee machines or provide basic services, forcing customers to go without their usual morning caffeine fix.

"For a lot of people, it's their first stop in the morning," said one local business owner. "It’s frustrating because we rely on power to function, and with no warning, we had to turn away customers."

The Response

As the hours ticked by, residents were left wondering when the power would return. London Hydro’s social media accounts were filled with updates, keeping residents informed about the restoration efforts, a practice echoed when BC Hydro crews responded during an atypical storm. The utility company urged those who were experiencing issues to report them online to help prioritize repair efforts.

"We are aware that many people are affected, and our teams are working tirelessly to restore power," the utility posted on Twitter. "Please stay safe, and we thank you for your patience."

Throughout the morning, the power was gradually restored to different areas of the city. However, some parts remained without electricity well into the afternoon, a situation reminiscent of extended outages that test city resilience. London Hydro confirmed that the outage was caused by a malfunctioning transformer, and the necessary repairs would take time to complete.

Long-Term Effects and Community Concerns

While the immediate effects of the outage were felt most acutely during the morning hours, some residents expressed concern about the potential long-term effects. The city’s reliance on a stable electricity grid became a focal point of discussion, with many wondering if similar outages could occur in the future, as seen in the North Seattle outage earlier this year.

"I understand that things break, but it’s frustrating that it took so long for power to come back," said a London resident. "This isn’t the first time something like this has happened, and it makes me wonder about the reliability of our infrastructure."

City officials responded by reassuring residents that efforts are underway to upgrade the city's infrastructure to prevent such outages from happening in the future. A report released by London Hydro highlighted ongoing investments in upgrading transformers and other key components of the city's power grid. Province-wide, Hydro One restored power to more than 277,000 customers after damaging storms, underscoring the scale of upgrades needed. Despite these efforts, however, experts warn that older infrastructure in some areas may still be vulnerable to failure, especially during extreme weather events or other unforeseen circumstances.

The morning outage serves as a reminder of how reliant modern cities are on stable electricity networks. While the response from London Hydro was swift and effective in restoring power, it’s clear that these types of events can cause significant disruptions to daily life. As the city moves forward, many are calling for increased investment in infrastructure and proactive measures to prevent future outages, especially after Toronto outages persisted following a spring storm in the region.

In the meantime, Londoners have adapted, finding ways to go about their day as best they can. For some, it’s a reminder of the importance of preparedness in an increasingly unpredictable world. Whether it’s an extra flashlight or a backup power source, residents are learning to expect the unexpected and be ready for whatever the next workday might bring.

 

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EIA expects solar and wind to be larger sources of U.S. electricity generation this summer

US Summer Electricity Outlook 2022 projects rising renewable energy generation as utility-scale solar and wind capacity additions surge, while coal declines and natural gas shifts amid higher fuel prices and regional supply constraints.

 

Key Points

An EIA forecast of summer 2022 power: more solar and wind, less coal, and shifting gas use amid higher fuel prices.

✅ Solar +10 million MWh; wind +8 million MWh vs last summer

✅ Coal generation -20 million MWh amid supply constraints, retirements

✅ Gas prices near $9/MMBtu; slight national gen decline

 

In our Summer Electricity Outlook, a supplement to our May 2022 Short-Term Energy Outlook, we expect the largest increases in U.S. electric power sector generation this summer will come from renewable energy sources such as wind and solar generation. These increases are the result of new capacity additions. We forecast utility-scale solar generation between June and August 2022 will grow by 10 million megawatthours (MWh) compared with the same period last summer, and wind generation will grow by 8 million MWh. Forecast generation from coal and natural gas declines by 26 million MWh this summer, although natural gas generation could increase in some electricity markets where coal supplies are constrained.

For recent context, overall U.S. power generation in January rose 9.3% year over year, the EIA reports.

Wind and solar power electric-generating capacity has been growing steadily in recent years. By the start of June, we estimate the U.S. electric power sector will have 65 gigawatts (GW) of utility-scale solar-generating capacity, a 31% increase in solar capacity since June 2021. Almost one-third of this new solar capacity will be built in the Texas electricity market. The electric power sector will also have an estimated 138 GW of wind capacity online this June, which is a 12% increase from last June.

Along with growth in renewables capacity, we expect that an additional 6 GW of new natural gas combined-cycle generating capacity will come online by June 2022, an increase of 2% from last summer. Despite this increase in capacity, we expect natural gas-fired electricity generation at the national level will be slightly (1.3%) lower than last summer.

We forecast the price of natural gas delivered to electric generators will average nearly $9 per million British thermal units between June and August 2022, which would be more than double the average price last summer. The higher expected natural gas prices and growth in renewable generation will likely lead to less natural gas-fired generation in some regions of the country.

In contrast to renewables and natural gas, the electricity industry has been steadily retiring coal-fired power plants over the past decade. Between June 2021 and June 2022, the electric power sector will have retired 6 GW (2%) of U.S. coal-fired generating capacity.

In previous years, higher natural gas prices would have resulted in more coal-fired electricity generation across the fleet. However, coal-fired power plants have been limited in their ability to replenish their historically low inventories in recent months as a result of mine closures, rail capacity constraints, and labor market tightness. These coal supply constraints, along with continued retirement of generating capacity, contribute to our forecast that U.S. coal-fired generation will decline by 20 million MWh (7%) this summer. In some regions of the country, these coal supply constraints may lead to increased natural gas-fired electricity generation despite higher natural gas prices.
 

 

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