Dell to run headquarters with renewable power

By McClatchy Tribune News


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Dell Inc. is betting that fossil fuel power will soon cost more than green power.

The computer company said that it has agreed to purchase renewable power - wind power and power generated with landfill gases - to run its 2.1 million-square-foot headquarters in Round Rock, Texas.

The company declined to say how much it will pay for 80 million kilowatt-hours of renewable power each year. Renewable energy tends to cost at least half a cent more per kilowatt-hour than other forms of power, meaning Dell could initially pay about $400,000 extra. But Dell officials say that by the end of the three-year contract, prices for power generated by natural gas will be higher than power from renewable sources.

"For us, that's the beauty of green energy. Because the source, especially in our landfill, is predictable and stable," said Dane Parker, Dell's director of global environment, health and safety.

Forty percent of the electricity for Dell headquarters will come from a Waste Management landfill in Austin. The sanitation company is tapping many of its landfills for methane and using the methane to run power generators. The rest of Dell's power will come from windmills and will be supplied by TXU Energy, the retail arm of Energy Future Holdings.

Dell is also buying more renewable power from Austin Energy to run its Austin Parmer Campus.

It will increase renewable power to 17 percent from 8 percent.

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Trump's Pledge to Scrap Offshore Wind Projects

Trump Offshore Wind Pledge signals a push for deregulation over renewable energy, challenging climate policy, green jobs, and coastal development while citing marine ecosystems, navigation, and energy independence amid state-federal permitting and legal hurdles.

 

Key Points

Trump's vow to cancel offshore wind projects favors deregulation and fossil fuels, impacting climate policy and jobs.

✅ Day-one plan to scrap offshore wind leases and permits

✅ Risks to renewable targets, grid mix, and coastal supply chains

✅ Likely court fights and state-federal regulatory conflicts

 

During his tenure as President of the United States, Donald Trump made numerous promises and policy proposals, many of which sparked controversy and debate. One such pledge was his vow to scrap offshore wind projects on "day one" of his presidency. This bold statement, while appealing to certain interests, raised concerns about its potential impact on U.S. offshore wind growth and environmental conservation efforts.

Trump's opposition to offshore wind projects stemmed from various factors, including his skepticism towards renewable energy, even as forecasts point to a $1 trillion offshore wind market in coming years, concerns about aesthetics and property values, and his focus on promoting traditional energy sources like coal and oil. Throughout his presidency, Trump prioritized deregulation and sought to roll back environmental policies introduced by previous administrations, arguing that they stifled economic growth and hindered American energy independence.

The prospect of scrapping offshore wind projects drew mixed reactions from different stakeholders. Supporters of Trump's proposal pointed to potential benefits such as preserving scenic coastal landscapes, protecting marine ecosystems, and addressing concerns about navigational safety and national security. Critics, however, raised valid concerns about the implications of such a decision on the renewable energy sector, including progress toward getting 1 GW on the grid nationwide, climate change mitigation efforts, and job creation in the burgeoning green economy.

Offshore wind energy has emerged as a promising source of clean, renewable power with the potential to reduce greenhouse gas emissions and diversify the energy mix. Countries like Denmark, the United Kingdom, and Germany have made significant investments in offshore wind in Europe, demonstrating its viability as a sustainable energy solution. In the United States, offshore wind projects have gained traction in states like Massachusetts, New York, and New Jersey, where coastal conditions are conducive to wind energy generation.

Trump's pledge to scrap offshore wind projects on "day one" of his presidency raised questions about the feasibility and legality of such a move. While the president has authority over certain aspects of energy policy and regulatory oversight, the development of offshore wind projects often involves multiple stakeholders, including state governments, local communities, private developers, and federal agencies, and actions such as Interior's move on Vineyard Wind illustrate federal leverage in permitting. Any attempt to halt or reverse ongoing projects would likely face legal challenges and regulatory hurdles, potentially delaying or derailing implementation.

Moreover, Trump's stance on offshore wind projects reflected broader debates about the future of energy policy, environmental protection, and economic development. While some argued for prioritizing fossil fuel extraction and traditional energy infrastructure, others advocated for a transition towards clean, renewable energy sources, drawing on lessons from the U.K. about wind deployment, to mitigate climate change and promote sustainable development. The Biden administration, which succeeded the Trump presidency, has signaled a shift towards a more climate-conscious agenda, including support for renewable energy initiatives and commitments to rejoin international agreements like the Paris Climate Accord.

In hindsight, Trump's pledge to scrap offshore wind projects on "day one" of his presidency underscores the complexities of energy policy and the importance of balancing competing interests and priorities. While concerns about aesthetics, property values, and environmental impact are valid, addressing the urgent challenge of climate change requires bold action and innovation in the energy sector. Offshore wind energy presents an opportunity, as seen in the country's biggest offshore wind farm approved in New York, to harness the power of nature in a way that is both environmentally responsible and economically beneficial. As the United States navigates its energy future, finding common ground and forging partnerships will be essential to ensure a sustainable and prosperous tomorrow.

 

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Manitoba Hydro scales back rate increase next year

Manitoba Hydro 3.5 Percent Rate Increase proposes a smaller electricity rate hike under Public Utilities Board oversight to bolster financial reserves, address debt and Bipole III costs, amid shifting export sales and water flow conditions.

 

Key Points

It is Manitoba Hydro's proposed 3.5% electricity rate hike for 2019-20 to shore up finances under PUB oversight.

✅ PUB review sought without lengthy hearing

✅ Revenue boost forecast at 59 million dollars

✅ Natural gas rates flat; class shifts adjust bills

 

Manitoba Hydro is scaling back its rate hike request for next year, instead of the annual 7.9 per cent hikes the Crown corporation previously said it would need until 2023-24 to address debt. 

Hydro is asking the Public Utilities Board for a 3.5 per cent rate increase next year, which would take effect on April 1.

In last week's application, Hydro said its new board is reviewing the corporation's financial picture. Once that is complete, the utility expects to submit a new multi-year rate plan in late 2019 that addresses the organization's long-term future.

"It's too speculative at this point to discuss any possible future rate increases," spokesperson Bruce Owen said in an email.

The proposed increase next year is similar to other jurisdictions and nearly in line with the Public Utilities Board's decision to allow an average 3.6 per cent jump in electricity rates in 2018-19, which began this summer.

"The requested 3.5 per cent rate increase … generates a modest level of net income under average water flow conditions that will assist in gradually building the revenue base and reduce the risk of the corporation incurring a loss" in 2019-20, the rate application said.

If approved, consumers would face their second rate increase from Hydro in under a year.

Crown Services Minister Colleen Mayer said she's sympathetic to customers bracing for another rate increase amid NL rate hike concerns that far exceeds the rate of inflation.

"I hear that, very clearly," she said. "The NDP left us with an insurmountable problem — we're trying to fix that."

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Next year's rate increase is projected to bring in $59 million of revenue, boosting the Crown corporation's financial reserves by $31 million.

Without it, the utility would deal with a net loss, it said.

This time, Hydro officials are asking PUB to forgo a rate hearing, suggesting neither itself nor the board has the resources for a lengthy six- to nine-month process to review an application where not much has changed financially and would generate a "minimum level of net income," Hydro said in a letter to the board.

The short-term rate relief, the letter recommends, should be "awarded in a timely and cost-effective manner, recognizing that the corporation's long-term financial forecasts will be finalized and available for review" in late 2019.

Hydro's net income next year will be lower than projected, the rate application said, due to a reduction in export sales and increases in depreciation and financing costs from Bipole III.

"Even though they had a total implosion of their previous board, on this very issue, they haven't learned lessons and they continue to be cheerleaders for these rapid rate increases," Kinew said, referring to the exodus of every board member but one earlier this year.

Manitoba Hydro's burgeoning debt surpasses $19 billion

On natural gas, Manitoba Hydro is asking PUB for no rate increase for the next two years.

There will, however, be some changes in rates in different customer classes, Owen said, resulting in modest rate reductions for mainly residential customers and increases for customers who use a lot of natural gas.

The corporation also wants to stop collecting fees to support the furnace replacement program. The initiative will continue with existing fees.

 

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Altmaier's new electricity forecast: the main driver is e-mobility

Germany 2030 Electricity Demand Forecast projects 658 TWh, driven by e-mobility, heat pumps, and green hydrogen. BMWi and BDEW see higher renewables, onshore wind, photovoltaics, and faster grid expansion to meet climate targets.

 

Key Points

A BMWi outlook to 658 TWh by 2030, led by e-mobility, plus demand from heat pumps, green hydrogen, and industry.

✅ Transport adds ~70 TWh; cars take 44 TWh by 2030

✅ Heat pumps add 35 TWh; green hydrogen needs ~20 TWh

✅ BDEW urges 70% renewables and faster grid expansion

 

Gross electricity consumption in Germany will increase from 595 terawatt hours (TWh) in 2018 to 658 TWh in 2030. That is an increase of eleven percent. This emerges from the detailed analysis of the development of electricity demand that the Federal Ministry of Economics (BMWi) published on Tuesday. The main driver of the increase is therefore the transport sector. According to the paper, increased electric mobility in particular contributes 68 TWh to the increase, in line with rising EV power demand trends across markets. Around 44 TWh of this should be for cars, 7 TWh for light commercial vehicles and 17 TWh for heavy trucks. If the electricity consumption for buses and two-wheelers is added, this results in electricity consumption for e-mobility of around 70 TWh.

The number of purely battery-powered vehicles is increasing according to the investigation by the BMWi to 16 million by 2030, reflecting the global electric car market momentum, plus 2.2 million plug-in hybrids. In 2018 there were only around 100,000 electric cars, the associated electricity consumption was an estimated 0.3 TWh, and plug-in mileage in 2021 highlighted the rapid uptake elsewhere. For heat pumps, the researchers predict an increase in demand by 35 TWh to around 42 TWh. They estimate the electricity consumption for the production of around 12.5 TWh of green hydrogen in 2030 to be just under 20 TWh. The demand at battery factories and data centers will increase by 13 TWh compared to 2018 by this point in time. In the data centers, there is no higher consumption due to more efficient hardware despite advancing digitization.

The updated figures are based on ongoing scenario calculations by Prognos, in which the market researchers took into account the goals of the Climate Protection Act for 2030 and the wider European electrification push for decarbonization. In the preliminary estimate presented by Federal Economics Minister Peter Altmaier (CDU) in July, a range of 645 to 665 TWh was determined for gross electricity consumption in 2030. Previously, Altmaier officially said that electricity demand in this country would remain constant for the next ten years. In June, Chancellor Angela Merkel (CDU) called for an expanded forecast that would have to include trends in e-mobility adoption within a decade and the Internet of Things, for example.

Higher electricity demand
The Federal Association of Energy and Water Management (BDEW) is assuming an even higher electricity demand of around 700 TWh in nine years. In any case, a higher share of renewable energies in electricity generation of 70 percent by 2030 is necessary in order to be able to achieve the climate targets and to address electricity price volatility risks. The expansion paths urgently need to be increased and obstacles removed. This could mean around 100 gigawatts (GW) for onshore wind turbines, 11 GW for biomass and at least 150 GW for photovoltaics by 2030. Faster network expansion and renovation will also become even more urgent, as electric cars challenge grids in many regions.
 

 

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TotalEnergies to Acquire German Renewables Developer VSB for US$1.65 Billion

TotalEnergies VSB Acquisition accelerates renewable energy growth, expanding wind and solar portfolios across Germany and Europe, advancing decarbonization, net-zero targets, and the energy transition through a US$1.65 billion strategic clean power investment.

 

Key Points

A US$1.65B deal: TotalEnergies acquires VSB to scale wind and solar in Europe and advance net-zero goals.

✅ US$1.65B purchase expands wind and solar pipeline

✅ Strengthens presence in Germany and wider Europe

✅ Advances net-zero, energy transition objectives

 

In a major move to expand its renewable energy portfolio, French energy giant TotalEnergies has announced its decision to acquire German renewable energy developer VSB for US$1.65 billion. This acquisition represents a significant step in TotalEnergies' strategy to accelerate its transition from fossil fuels to greener energy sources, aligning with the global push towards sustainability and carbon reduction, as reflected in Europe's green surge across key markets.

Strengthening TotalEnergies’ Renewable Energy Portfolio

TotalEnergies has long been one of the largest players in the global energy market, historically known for its oil and gas operations. However, in recent years, the company has made a concerted effort to diversify its portfolio and shift its focus toward renewable energy. The purchase of VSB, a leading developer of wind and solar energy projects, occurs amid rising European wind investment trends and is a clear reflection of TotalEnergies' commitment to this green energy transition.

VSB, based in Dresden, Germany, specializes in the development, construction, and operation of renewable energy projects, particularly wind and solar power. The company has a significant presence in Europe, with a growing portfolio of projects in countries like Germany, where clean energy accounts for 50% of electricity today, Poland, and the Czech Republic. The acquisition will allow TotalEnergies to bolster its renewable energy capacity, particularly in the wind and solar sectors, which are key components of its long-term sustainability goals.

By acquiring VSB, TotalEnergies is not only increasing its renewable energy output but also gaining access to a highly experienced team with a proven track record in energy project development. This move is expected to expedite TotalEnergies’ renewable energy ambitions, enabling the company to build on VSB’s strong market presence and established partnerships across Europe.

VSB’s Strategic Role in the Energy Transition

VSB’s expertise in the renewable energy sector makes it a valuable addition to TotalEnergies' green energy strategy. The company has been at the forefront of the energy transition in Europe, particularly in wind energy development, as offshore wind is set to become a $1 trillion business over the coming decades. Over the years, VSB has completed numerous large-scale wind projects, including both onshore and offshore installations.

The acquisition also positions TotalEnergies to better compete in the rapidly growing European renewable energy market, including the UK, where offshore wind is powering up alongside strong demand due to increased governmental focus on achieving net-zero emissions by 2050. Germany, in particular, has set ambitious renewable energy targets as part of its Energiewende initiative, which aims to reduce the country’s carbon emissions and increase the share of renewables in its energy mix. By acquiring VSB, TotalEnergies is not only enhancing its capabilities in Germany but also gaining a foothold in other European markets where VSB has operations.

With Europe increasingly shifting toward wind and solar power as part of its decarbonization efforts, including emerging solutions like offshore green hydrogen that complement wind buildouts, VSB’s track record of developing large-scale, sustainable energy projects provides TotalEnergies with a strong competitive edge. The acquisition will further TotalEnergies' position as a leader in the renewable energy space, especially in wind and solar power generation.

Financial and Market Implications

The US$1.65 billion deal marks TotalEnergies' largest renewable energy acquisition in recent years and underscores the growing importance of green energy investments within the company’s broader business strategy. TotalEnergies plans to use this acquisition to scale up its renewable energy assets and move closer to its target of achieving net-zero emissions by 2050. The deal also positions TotalEnergies to capitalize on the expected growth of renewable energy across Europe, particularly in countries with aggressive renewable energy targets and incentives.

The transaction is also expected to boost TotalEnergies’ presence in the global renewable energy market. As the world increasingly turns to wind, solar, and other sustainable energy sources, TotalEnergies is positioning itself to be a major player in the global energy transition. The acquisition of VSB complements TotalEnergies' previous investments in renewable energy and further aligns its portfolio with international sustainability trends.

From a financial standpoint, TotalEnergies’ purchase of VSB reflects the growing trend of large energy companies investing heavily in renewable energy. With wind and solar power becoming more economically competitive with fossil fuels, this investment is seen as a prudent long-term strategy, one that is likely to yield strong returns as demand for clean energy continues to rise.

Looking Ahead: TotalEnergies' Green Transition

TotalEnergies' acquisition of VSB is part of the company’s broader strategy to diversify its energy offerings and shift away from its traditional reliance on oil and gas. The company has already made significant strides in renewable energy, with investments in solar, wind, and battery storage projects across the globe, as developments like France's largest battery storage platform underline this momentum. The VSB acquisition will only accelerate these efforts, positioning TotalEnergies as one of the foremost leaders in the clean energy revolution.

By 2030, TotalEnergies plans to allocate more than 25% of its total capital expenditure to renewable energies and electricity. The company has already set ambitious goals to reduce its carbon footprint and shift its business model to align with the global drive toward sustainability. The integration of VSB into TotalEnergies’ portfolio signals a firm commitment to these goals, ensuring the company remains at the forefront of the energy transition.

In conclusion, TotalEnergies’ purchase of VSB for US$1.65 billion marks a significant milestone in the company’s renewable energy journey. By acquiring a company with deep expertise in wind and solar power development, TotalEnergies is taking decisive steps to strengthen its position in the renewable energy market and further its ambitions of achieving net-zero emissions by 2050. This acquisition will not only enhance the company’s growth prospects but also contribute to the ongoing global shift toward clean, sustainable energy sources.

 

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27,000 Plus More Clean Energy Jobs Lost in May

U.S. Clean Energy Job Losses highlight COVID-19 impacts on renewable energy, solar, wind, and energy efficiency, with PPP fatigue, unemployment, and calls for Congressional stimulus, per Department of Labor data analyzed by E2.

 

Key Points

Pandemic-driven layoffs across renewable, solar, wind, and efficiency sectors, risking recovery without federal aid.

✅ Over 620,500 clean energy jobs lost in three months

✅ Energy efficiency, solar, and wind hit hardest nationwide

✅ Industry urges Congress for stimulus, tax credit relief

 

As Congress this week begins debating economic stimulus support for the energy industry, a new analysis of unemployment data shows the biggest part of America's energy economy - clean energy - lost another 27,000 jobs in May, bringing the total number of clean energy workers who have lost their jobs in the past three months to more than 620,500.

While May saw an improvement in new unemployment claims over March and April, the findings represent the sector's third straight month of significant job losses across solar, wind, energy efficiency, clean vehicles and other industries. With coronavirus cases once again rising in many states and companies beginning to run out of the Payroll Protection Program (PPP) funding that has helped small businesses keep workers employed, and as households confront pandemic power shut-offs that heighten energy insecurity, the report increases concerns the sector will be unable to resume its economy-leading jobs growth in the short- or long-term without a significant policy response.

Given the size and scope of the clean energy industry, such a sustained loss would cast a pall on the nation's overall economic recovery, as shifting electricity demand during COVID-19 complicates forecasts, according to the analysis of the Department of Labor's May unemployment data from E2 (Environmental Entrepreneurs), E4TheFuture and the American Council on Renewable Energy (ACORE).

Prior to COVID-19, clean energy - including energy efficiency, solar and wind generation, clean vehicles and related sectors - was among the U.S. economy's biggest and fastest-growing employment sectors, growing 10.4% since 2015 to nearly 3.4 million jobs at the end of 2019. That made clean energy by far the biggest employer of workers in all energy occupations, employing nearly three times as many people as the fossil fuel industry. For comparison, coal mining employs about 47,000 workers, even as clean energy projects in coal communities aim to revitalize local economies.

The latest monthly analysis for the groups by BW Research Partnership runs contrary to recent Bureau of Labor Statistics (BLS) reports, which indicated that a more robust economic rebound was underway, even as high fuel prices haven't spurred a green shift in adoption, while also acknowledging misclassifications and serious reporting difficulties in its own data.

Bob Keefe, Executive Director at E2, said:

"May's almost 30,000 clean energy jobs loss is sadly an improvement in the rate of jobs shed but make no mistake: There remains huge uncertainty and volatility ahead. It will be very tough for clean energy to make up these continuing job losses without support from Congress. Lawmakers must act now. If they do, we can get hundreds of thousands of these workers back on the job today and build a better, cleaner, more equitable economy for tomorrow. And who doesn't want that?"

Pat Stanton, Policy Director at E4TheFuture, said:

"Most of the time, energy efficiency workers need to go inside homes, businesses and other buildings to get the job done. Since they couldn't do that during COVID lockdowns, they couldn't work. Now states are opening up. But utilities, contractors and building owners need to protect employees and occupants from possible exposure to the virus and need more clarity about potential liabilities."

Gregory Wetstone, President and CEO of ACORE, said:

"In May, we saw thousands of additional renewable energy workers join the ranks of the unemployed, further underscoring the damage COVID-19 is inflicting on our workforce. Since the pandemic began, nearly 100,000 renewable energy workers have lost their jobs. We need help from Congress to get American clean energy workers back to work. With commonsense measures like temporary refundability and a delay in the phasedown of renewable energy tax credits, Congress can help restore these good-paying jobs so the renewable sector can continue to provide the affordable, pollution-free power American consumers and businesses want and deserve."

Phil Jordan, Vice President and Principal at BW Research Partnership, said:

"We understand the challenges and limitations of data collection for BLS in the middle of a global pandemic. But any suggestion that a strong employment rebound is underway in the United States simply is not reflected in the clean energy sector right now. And with PPP expiring, that only increases uncertainty in the months ahead."

The report comes as both the Senate Committee on Energy and Natural Resources and the House Energy and Commerce Committee are considering clean energy stimulus to restart the U.S. economy, and amid assessments of mixed results from the climate law shaping expectations, and as lawmakers in both the House and Senate are increasing calls for supporting clean energy workers and businesses, including this bicameral letter signed by 57 members of Congress and another signed today by 180 House members.

Industries Hit Hardest

According to the analysis, energy efficiency lost more jobs than any other clean energy sector for the third consecutive month in May, shedding about 18,900 jobs. These workers include electricians, HVAC technicians who work with high-efficiency systems, and manufacturing employees who make Energy Star appliances, LED lighting systems and efficient building materials.

Renewable energy, including solar and wind, lost nearly 4,300 jobs in May.

Clean grid and storage and clean vehicles manufacturing -- including grid modernization, energy storage, car charging and electric and plug-in hybrid vehicle manufacturing -- lost a combined 3,200 jobs in May, as energy crisis impacts electricity, gas, and EVs in several ways.

The clean fuels sector lost more than 650 jobs in May.

States and Localities Hit Across Country

California continues to be the hardest hit state in terms of total job losses, losing 4,313 jobs in May and more than 109,700 since the COVID-19 crisis began. Florida was the second hardest hit state in May, losing an additional 2,563 clean energy jobs, while Georgia, Texas, Washington, and Michigan all suffered more than 1,000 job losses across the sector. An additional 12 states saw at least 500 clean energy unemployment filings, and reports like Pennsylvania's clean energy jobs analysis provide added context, according to the latest analysis.

For a full breakdown of clean energy job losses in each state, along with a list of the hardest hit counties and metro areas, see the full analysis here.

 

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Current Model For Storing Nuclear Waste Is Incomplete

Nuclear Waste Corrosion accelerates as stainless steel, glass, and ceramics interact in aqueous conditions, driving localized corrosion in repositories like Yucca Mountain, according to Nature Materials research on high-level radioactive waste storage.

 

Key Points

Degradation of waste forms and canisters from water-driven chemistry, causing accelerated, localized corrosion in storage.

✅ Stainless steel-glass contact triggers severe localized attack

✅ Ceramics and steel co-corrosion observed under aqueous conditions

✅ Yucca Mountain-like chemistry accelerates waste form degradation

 

The materials the United States and other countries plan to use to store high-level nuclear waste, even as utilities expand carbon-free electricity portfolios, will likely degrade faster than anyone previously knew because of the way those materials interact, new research shows.

The findings, published today in the journal Nature Materials (https://www.nature.com/articles/s41563-019-0579-x), show that corrosion of nuclear waste storage materials accelerates because of changes in the chemistry of the nuclear waste solution, and because of the way the materials interact with one another.

"This indicates that the current models may not be sufficient to keep this waste safely stored," said Xiaolei Guo, lead author of the study and deputy director of Ohio State's Center for Performance and Design of Nuclear Waste Forms and Containers, part of the university's College of Engineering. "And it shows that we need to develop a new model for storing nuclear waste."

Beyond waste storage, options like carbon capture technologies are being explored to reduce atmospheric CO2 alongside nuclear energy.

The team's research focused on storage materials for high-level nuclear waste -- primarily defense waste, the legacy of past nuclear arms production. The waste is highly radioactive. While some types of the waste have half-lives of about 30 years, others -- for example, plutonium -- have a half-life that can be tens of thousands of years. The half-life of a radioactive element is the time needed for half of the material to decay.

The United States currently has no disposal site for that waste; according to the U.S. General Accountability Office, it is typically stored near the nuclear power plants where it is produced. A permanent site has been proposed for Yucca Mountain in Nevada, though plans have stalled. Countries around the world have debated the best way to deal with nuclear waste; only one, Finland, has started construction on a long-term repository for high-level nuclear waste.

But the long-term plan for high-level defense waste disposal and storage around the globe is largely the same, even as the U.S. works to sustain nuclear power for decarbonization efforts. It involves mixing the nuclear waste with other materials to form glass or ceramics, and then encasing those pieces of glass or ceramics -- now radioactive -- inside metallic canisters. The canisters then would be buried deep underground in a repository to isolate it.

At the generation level, regulators are advancing EPA power plant rules on carbon capture to curb emissions while nuclear waste strategies evolve.

In this study, the researchers found that when exposed to an aqueous environment, glass and ceramics interact with stainless steel to accelerate corrosion, especially of the glass and ceramic materials holding nuclear waste.

In parallel, the electrical grid's reliance on SF6 insulating gas has raised warming concerns across Europe.

The study qualitatively measured the difference between accelerated corrosion and natural corrosion of the storage materials. Guo called it "severe."

"In the real-life scenario, the glass or ceramic waste forms would be in close contact with stainless steel canisters. Under specific conditions, the corrosion of stainless steel will go crazy," he said. "It creates a super-aggressive environment that can corrode surrounding materials."

To analyze corrosion, the research team pressed glass or ceramic "waste forms" -- the shapes into which nuclear waste is encapsulated -- against stainless steel and immersed them in solutions for up to 30 days, under conditions that simulate those under Yucca Mountain, the proposed nuclear waste repository.

Those experiments showed that when glass and stainless steel were pressed against one another, stainless steel corrosion was "severe" and "localized," according to the study. The researchers also noted cracks and enhanced corrosion on the parts of the glass that had been in contact with stainless steel.

Part of the problem lies in the Periodic Table. Stainless steel is made primarily of iron mixed with other elements, including nickel and chromium. Iron has a chemical affinity for silicon, which is a key element of glass.

The experiments also showed that when ceramics -- another potential holder for nuclear waste -- were pressed against stainless steel under conditions that mimicked those beneath Yucca Mountain, both the ceramics and stainless steel corroded in a "severe localized" way.

Other Ohio State researchers involved in this study include Gopal Viswanathan, Tianshu Li and Gerald Frankel.

This work was funded in part by the U.S. Department of Energy Office of Science.

Meanwhile, U.S. monitoring shows potent greenhouse gas declines confirming the impact of control efforts across the energy sector.

 

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