Squirrel causes hourlong outage

By Fairbanks Daily NewsMiner


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A trespassing squirrel caused an hourlong power outage in west Fairbanks recently that left 1,300 Golden Valley Electric Association members without electricity and shut down the University of Alaska FairbanksÂ’ computer system most of the day.

The squirrel, which was electrocuted, caused a short circuit in the electric companyÂ’s University Avenue substation, according GVEA public relations officer Corinne Bradish. A small fire was extinguished quickly, she said.

The outage occurred at 10:17 a.m., and all 1,300 GVEA members affected were back on line by 11:20 a.m., Bradish said.

“The substation was quickly isolated, and loads were switched to adjacent substations to help us restore power,” Bradish wrote in an email. “Arcing caused damage to bushings in the substation, which our crews replaced.”

The outage triggered an unfortunate domino effect for UAF, spokeswoman Marmian Grimes said.

Several people were trapped in elevators in Moore and Signers halls, but the fire department got them out quickly, she said.

Shortly after the outage, the main turbine in the UAF power plant overheated and had to be shut down, Grimes said. The power plant was trying to feed power into the Golden Valley grid, but a relay didnÂ’t open because of the outage and the turbine overheated, she said.

The loss of the main turbine caused UAFÂ’s central heating, which supplies heat and hot water to campus buildings, to go off line, forcing UAF to switch to Golden Valley for all its electrical needs. Backup turbines were employed to recharge the steam system, a process that was expected to be complete this month. The main turbine has already returned to service, Grimes said.

The outage also caused UAFÂ’s computer system to crash because the electric cooling system for the main computers went down. The schoolÂ’s information technology department was working to get the systemÂ’s servers back on line.

The outage also knocked out six traffic lights on the west side of town, according to state Department of Transportation spokeswoman Meadow Bailey.

Lights at the intersections of the Johansen Expressway and Peger Road, University Avenue and Airport Way, Airport Way and Washington Drive, University Avenue and College Road, Farmers Loop and North Tanana Drive, and Farmers Loop and Ballaine Road were out of commission for about an hour.

No accidents were reported as a result of the lights being out of service, Bailey said.

While squirrels commonly cause problems by running along electrical wires around town, Bradish said it’s “very uncommon” to have problems inside substations because they are fenced in and there are no trees.

“Squirrel activity is more common out on our distribution lines, as they will run along the wires,” Bradish wrote.

GVEA installs “squirrel guards” on distribution lines to reduce outages caused by squirrels stepping from the wire to the pole, which causes a short circuit because they become a conductor for electricity. The squirrel guard is an insulator on the wire that the squirrel crawls over to prevent it from touching the hot wire and the pole at the same time.

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There's a Russia-Sized Mystery in China's Electricity Sector

China Power Demand-Emissions Gap highlights surging grid demand outpacing renewables, with coal filling shortages despite record solar, wind, EV charging, and hydrogen growth, threatening decarbonization targets and net-zero pathways through 2030.

 

Key Points

China's power demand outpaces renewables, keeping coal dominant and raising emissions risk through the 2020s.

✅ Record solar and wind still lag fast grid demand growth

✅ Coal fills gaps as EV charging and hydrogen loads rise

✅ Forecasts diverge: CEC bullish vs IEA, BNEF conservative

 

Here’s a new obstacle that could prevent the world finally turning the corner on climate change: Imagine that over the coming decade a whole new economy the size of Russia were to pop up out of nowhere. With the world’s fourth-largest electricity sector and largest burden of power plant emissions after China, the U.S. and India, this new economy on its own would be enough to throw out efforts to halt global warming — especially if it keeps on growing through the 2030s.

That’s the risk inherent in China’s seemingly insatiable appetite for grid power, as surging electricity demand is putting systems under strain worldwide.

From the cracking pace of renewable build-out last year, you might think the country had broken the back of its carbon addiction. A record 55 gigawatts of solar power and 48 gigawatts of wind were connected — comparable to installing the generation capacity of Mexico in less than 12 months. This year will see an even faster pace, with 93 GW of solar and 50 GW of wind added, according to a report last week from the China Electricity Council, an industry association.

That progress could in theory see the country’s power sector emissions peak within months, rather than the late-2020s date the government has hinted at. Combined with a smaller quantity of hydro and nuclear, low-emissions sources will probably add about 310 terawatt-hours to zero-carbon generation this year. That 3.8% increase would be sufficient to power the U.K.

Countries that have reached China’s levels of per-capita electricity consumption (already on a par with most of Europe) typically see growth rates at less than half that level, even as global power demand has surged past pre-pandemic levels in recent years. Grid supply could grow at a faster pace than Brazil, Iran, South Korea or Thailand managed over the past decade without adding a ton of additional carbon to the atmosphere.

There’s a problem with that picture, however. If electricity demand grows at an even more headlong pace, there simply won’t be enough renewables to supply the grid. Fossil fuels, overwhelmingly coal, will fill the gap, a reminder of the iron law of climate dynamics in energy transitions.

Such an outcome looks distinctly possible. Electricity consumption in 2021 grew at an extraordinary rate of 10%, and will increase again by between 5% and 6% this year, according to the CEC. That suggests the country is on pace to match the CEC’s forecasts of bullish grid demand over the coming decade, with generation hitting 11,300 terawatt-hours in 2030. External analysts, such as the International Energy Agency and BloombergNEF, envisage a more modest growth to around 10,000 TWh. 

The difference between those two outlooks is vast — equivalent to all the electricity produced by Russia or Japan. If the CEC is right and the IEA and BloombergNEF are wrong, even the furious rate of renewable installations we’re seeing now won’t be enough to rein in China’s power-sector emissions.

Who’s correct? On one hand, it’s fair to say that power planners usually err on the side of overestimation. If your forecast for electricity demand is too high, state-owned generators will be less profitable than they otherwise would have been — but if it’s too low, you’ll see power cuts and shutdowns like China witnessed last autumn, with resulting power woes affecting supply chains beyond its borders.

On the other hand, the decarbonization of China’s economy itself should drive electricity demand well above what we’ve seen in the past, with some projections such as electricity meeting 60% of energy use by 2060 pointing to a profound shift. Some 3.3 million electric vehicles were sold in 2021 and BloombergNEF estimates a further 5.7 million will be bought in 2022. Every million EVs will likely add in the region of 2 TWh of load to the grid. Those sums quickly mounts up in a country where electric drivetrains are taking over a market that shifts more than 25 million new cars a year.

Decarbonizing industry, a key element on China’s road to zero emissions, could also change the picture. The IEA sees the country building 25 GW of electolysers to produce hydrogen by 2030, enough to consume some 200 TWh on their own if run close to full-time.

That’s still not enough to justify the scale of demand being forecast, though. China is already one of the least efficient countries in the world when it comes to translating energy into economic growth, and despite official pressure on the most wasteful, so called “dual-high” industries such as steel, oil refining, glass and cement, its targets for more thrifty energy usage remain pedestrian.

The countries that have decarbonized fastest are those, such as Germany, the U.K and the U.S., where Americans are using less electricity, that have seen power demand plateau or even decline, giving new renewable power a chance to swap out fossil-fired generators without chasing an ever-increasing burden on the grid. China’s inability to do this as its population peaks and energy consumption hits developed-country levels isn’t a sign of strength.

Instead, it’s a sign of a country that’s chronically unable to make the transition away from polluting heavy industry and toward the common prosperity and ecological civilization that its president keeps promising. Until China reins in that credit-fueled development model, the risks to its economy and the global climate will only increase.

 

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What to know about the big climate change meeting in Katowice, Poland

COP24 Climate Talks in Poland gather nearly 200 nations to finalize the Paris Agreement rulebook, advance the Talanoa Dialogue, strengthen emissions reporting and transparency, and align finance, technology transfer, and IPCC science for urgent mitigation.

 

Key Points

UNFCCC summit in Katowice to finalize Paris rules, enhance transparency, and drive stronger emissions cuts.

✅ Paris rulebook on reporting, transparency, markets, and timelines

✅ Talanoa Dialogue to assess gaps and raise ambition by 2020

✅ Finance and tech transfer for developing countries under UNFCCC

 

Delegates from nearly 200 countries have assembled this month in Katowice, Poland — the heart of coal country — to try to move the ball forward on battling climate change.

It’s now the 24th annual meeting, or “COP” — conference of the parties — under the landmark U.N. Framework Convention on Climate Change, which the United States signed under then-President George H.W. Bush in 1992. More significantly, it’s the third such meeting since nations adopted the Paris climate agreement in 2015, widely seen at the time as a landmark moment in which, at last, developed and developing countries would share a path toward cutting greenhouse gas emissions, as Obama's clean energy push sought to lock in momentum.

But the surge of optimism that came with Paris has faded lately. The United States, the second largest greenhouse gas emitter, said it would withdraw from the agreement, though it has not formally done so yet. Many other countries are off target when it comes to meeting their initial round of Paris promises — promises that are widely acknowledged to be too weak to begin with. And emissions have begun to rise after a brief hiatus that had lent some hope of progress.

The latest science, meanwhile, is pointing toward increasingly dire outcomes. The amount of global warming that the world already has seen — 1 degree Celsius, 1.8 degrees Fahrenheit — has upended the Arctic, is killing coral reefs and may have begun to destabilize a massive part of Antarctica. A new report from the U.N.'s Intergovernmental Panel on Climate Change (IPCC), requested by the countries that assembled in Paris to be timed for this year’s meeting, finds a variety of increasingly severe effects as soon as a rise of 1.5 degrees Celsius arrives — an outcome that can’t be avoided without emissions cuts so steep that they would require societal transformations without any known historical parallel, the panel found.

It’s in this context that countries are meeting in Poland, with expectations and stakes high.

So what’s on the agenda in Poland?

The answer starts with the Paris agreement, which was negotiated three years ago, has been signed by 197 countries and is a mere 27 pages long. It covers a lot, laying out a huge new regime not only for the world as a whole to cut its greenhouse gas emissions, but for each individual country to regularly make new emissions-cutting pledges, strengthen them over time, report emissions to the rest of the world and much more. It also addresses financial obligations that developed countries have to developing countries, including how to achieve clean and universal electricity at scale, and how technologies will be transferred to help that.

But those 27 pages leave open to interpretation many fine points for how it will all work. So in Poland, countries are performing a detailed annotation of the Paris agreement, drafting a “rule book” that will span hundreds of pages.

That may sound bureaucratic, but it’s key to addressing many of the flash points. For instance, it will be hard for countries to trust that their fellow nations are cutting emissions without clear standards for reporting and vetting. Not everybody is ready to accept a process like the one followed in the United States, which not only publishes its emissions totals but also has an independent review of the findings.

“A number of the developing countries are resisting that kind of model for themselves. They see it as an intrusion on their sovereignty,” said Alden Meyer, director of strategy and policy at the Union of Concerned Scientists and one of the many participants in Poland this week. “That’s going to be a pretty tough issue at the end of the day.”

It’s hardly the only one. Also unclear is what countries will do after the time frames on their current emissions-cutting promises are up, which for many is 2025 or 2030. Will all countries then start reporting newer and more ambitious promises every five years? Every 10 years?

That really matters when five years of greenhouse gas emissions — currently about 40 billion tons of carbon dioxide annually — are capable of directly affecting the planet’s temperature.

What can we expect each day?

The conference is in its second week, when higher-level players — basically, the equivalent of cabinet-level leaders in the United States — are in Katowice to advance the negotiations.

As this happens, several big events are on the agenda. On Tuesday and Wednesday is the “Talanoa Dialogue,” which will bring together world leaders in a series of group meetings to discuss these key questions: “Where are we? Where do we want to go? How do we get there?”

Friday is the last day of the conference, but pros know these events tend to run long. On Friday — or after — we will be waiting for an overall statement or decision from the meeting which may signal how much has been achieved.

What is the “Talanoa Dialogue”?

“Talanoa” is a word used in Fiji and in many other Pacific islands to refer to “the sharing of ideas, skills and experience through storytelling.” This is the process that organizers settled on to fulfill a plan formed in Paris in 2015.

That year, along with signing the Paris agreement, nations released a decision that in 2018 there should be a “facilitative dialogue" among the countries “to take stock” of where their efforts stood to reduce greenhouse gas emissions. This was important because going into that Paris meeting, it was already clear that countries' promises were not strong enough to hold global warming below a rise of 2 degrees Celsius (3.6 degrees Fahrenheit) above preindustrial temperatures.

This dialogue, in the Talanoa process, was meant to prompt reflection and maybe even soul searching about what more would have to be done. Throughout the year, “inputs” to the Talanoa dialogue — most prominently, the recent report by the United Nations' Intergovernmental Panel on Climate Change on the meaning and consequences of 1.5 degrees Celsius of warming —have been compiled and synthesized. Now, over two days in Poland, countries' ministers will assemble to share stories in small groups about what is working and what is not and to assess where the world as a whole is on achieving the required greenhouse gas emissions reductions.

What remains to be seen is whether this process will culminate in any kind of product or statement that calls clearly for immediate, strong ramping up of climate change promises across the world.

With the clock ticking, will countries do anything to increase their ambition at this meeting?

If negotiating the Paris rule book sounds disappointingly technical, well, you’re not the only one feeling that way. Pressure is mounting for countries to accomplish something more than that in Poland — to at minimum give a strong signal that they understand that the science is looking worse and worse, and the world’s progress on the global energy transition isn’t matching that outlook.

“The bigger issue is how we’re going to get to an outcome on greater ambition,” said Lou Leonard, senior vice president for climate and energy at the World Wildlife Fund, who is in Poland observing the talks. “And I think the first week was not kind on moving that part of the agenda forward.”

Most countries are not likely to make new emissions-cutting promises this week. But there are two ways that the meeting could give a strong statement that countries should — or will — come up with new promises at least by 2020. That’s when extremely dramatic emissions cuts would have to start, including progress toward net-zero electricity by mid-century, according to the recent report on 1.5 degrees Celsius of warming.

The first is the aforementioned “Talanoa dialogue” (see above). It’s possible that the outcome of the dialogue could be a statement acknowledging that the world isn’t nearly far enough along and calling for much stronger steps.

There will also be a decision text released for the meeting as a whole, which could potentially send a signal. Leonard said he hopes that would include details for the next steps that will put the world on a better course.

“We have to create milestones, and the politics around it that will pressure countries to do something that quite frankly they don’t want to do,” he said. “It’s not going to be easy. That’s why we need a process that will help make it happen. And make the most of the IPCC report that was designed to come out right now so it could do this for us. That’s why we have it, and it needs to serve that role.”

The United States says it will withdraw from the agreement, so what role is it playing in Poland?

Despite President Trump’s pledge to withdraw, the United States remains in the Paris agreement (for now) and has sent a delegation of 44 people to Poland, largely from the State Department but also from the Environmental Protection Agency, Energy Department and even the White House, while domestically a historic U.S. climate law has recently passed to accelerate clean energy. Many of these career government officials remain deeply engaged in hashing out details of the agreement.

Still, the country as a whole is being cast in an antagonistic role in the talks.

 

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BC Hydro: 2021 was a record-breaking year for electricity demand

BC Hydro 2021 Peak Load Records highlight record-breaking electricity demand, peak load spikes, heat dome impacts, extreme cold, and shifting work-from-home patterns managed by a flexible hydroelectric system and climate-driven load trends.

 

Key Points

Record-breaking electricity demand peaks from extreme heat and cold that reshaped daily load patterns across BC in 2021.

✅ Heat dome and deep freeze drove sustained peak electricity demand

✅ Peak load built gradually, reflecting work-from-home behavior

✅ Flexible hydroelectric system adapts quickly to demand spikes

 

From June’s heat dome to December’s extreme cold, 2021 was a record-setting year, according to BC Hydro, and similar spikes were noted as Calgary's electricity use surged in frigid weather.

On Friday, the energy company released a new report on electricity demand, and how extreme temperatures over extended periods of time, along with growing scrutiny of crypto mining electricity use, led to record peak loads.

“We use peak loads to describe the electricity demand in the province during the highest load hour of each day,” Kyle Donaldson, BC Hydro spokesperson, said in a media release.

“With the heat dome in the summer and the sustained cold temperatures in December, we saw more record-breaking hours on more days last year than any other single year.”

According to BC Hydro, during summer, the Crown corporation recorded 19 of its top 25 all-time summer daily peak records — including breaking its all-time summer peak hourly demand record.

In December, which saw extremely cold temperatures and heavy snowfall, BC Hydro said its system experienced the highest and longest sustained load levels ever, as it activated its winter payment plan to assist customers.

Overall, BC Hydro says it has experienced 11 of its top 25 all-time daily peak records this winter, adding that Dec. 27 broke its all-time high peak hourly demand record.

“BC Hydro’s hydroelectric system is directly impacted by variations in weather, including drought conditions that require adaptation, and in 2021 more electricity demand records were broken than any other year prior, largely because of the back-to-back extreme temperatures lasting for days and weeks on end,” reads the report.

The energy company expects this trend to continue, noting that it has broken the peak record five times in the past five years, and other jurisdictions such as Quebec consumption record have also shattered consumption records.

It also noted that peak demand patterns have also changed since the first year of the COVID-19 pandemic, with trends seen during Earth Hour usage offering context.

“When the previous peak hourly load record was broken in January 2020, load displayed sharper increases and decreases throughout the day, suggesting more typical weather and behaviour,” said the report.

“In contrast, the 2021 peak load built up more gradually throughout the day, suggesting more British Columbians were likely working from home, or home for the holidays – waking up later and home earlier in the evening – as well as colder weather than average.”

BC Hydro also said “current climate models suggest a warming trend continuing in years to come which could increase demand year-round,” but noted that its flexible hydroelectric system can meet changes in demand quickly.

 

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Cooperation agreement for Rosatom and Russian Academy

Rosatom-RAS Cooperation drives joint R&D in nuclear energy, nuclear medicine, fusion, particle accelerators, laser technologies, fuel cycle safety, radioactive waste management, and supercomputing, aligning strategic planning and standards to accelerate innovation across Russia's nuclear sector.

 

Key Points

A pact uniting Rosatom and RAS on nuclear R&D, fusion, and medicine to advance nuclear technologies across Russia.

✅ Joint R&D in fusion, accelerators, lasers, and new materials

✅ Focus on fuel cycle closure, safety, and waste management

✅ Shared strategic planning, standards, and expert evaluation

 

Russian state atomic energy corporation Rosatom and the Russian State Academy of Sciences are to cooperate on joint scientific, technical and innovative activities in areas including nuclear energy, nuclear medicine and other areas of the electricity sector under an agreement signed in Moscow on 7 February.

The cooperation agreement was signed by Rosatom Director General Alexei Likhachov and President of the Russian Academy of Sciences Alexander Sergeev during a joint meeting to mark Russian Science Day. Under its terms, the partners will cooperate in organising research and development activities aimed at providing technological advantages in various sectors of the domestic industry, as well as creating and developing interdisciplinary scientific and technological centres and organisations supporting energy sector training and innovation. They will also jointly develop strategic planning documents, improve the technical and scientific regulatory and legal framework, and carry out expert evaluations of scientific and technical projects and scientific consultations.

Rosatom said the main areas of cooperation in the agreement are: the development of laser technologies and particle accelerators; the creation of modern diagnostic equipment, nuclear medicine and radiation therapy; controlled thermonuclear fusion; nuclear energy of the future; new materials; the nuclear fuel cycle and its closure; safety of nuclear energy and power sector pandemic response preparedness; environmental aspects of radioactive waste management; modern supercomputers, databases, application packages, and import-substituting codes; and also X-ray astronomy and nuclear planetology.

Likhachov said joint activities between Rosatom and the Academy would strengthen the Russian nuclear industry's "leadership" in the world and allow the creation of new technologies that would shape the future image of the nuclear industry in Russia. "Within the framework of the Agreement, we intend to expand work on the entire spectrum of advanced scientific research. The most important direction of our cooperation will be the integration of fundamental, exploratory and applied scientific research, including in the interests of the development of the nuclear industry. We will work together to form the nuclear energy industry of the future, and enhance grid resilience, to create new materials, new radiation technologies,” he said.

Sergeyev noted the "rich history" of cooperation between the Academy of Sciences and the nuclear industry, including modern safety practices such as arc flash training that support operations. “All major projects in the field of military and peaceful nuclear energy were carried out jointly by scientists and specialists of our organisations, which largely ensured their timeliness and success," he said.

 

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Clorox accelerates goal of achieving 100% renewable electricity in the U.S. and Canada to 2021

Clorox Enel 70 MW VPPA accelerates renewable energy, sourcing Texas solar from the Roadrunner project to support 100% renewable electricity, Scope 2 reductions, and grid decarbonization through a virtual power purchase agreement starting in 2021.

 

Key Points

A 12-year virtual power purchase agreement for 70 MW of Texas solar to advance Clorox's 100% renewable electricity goal.

✅ 12-year contract supporting 100% renewable electricity by 2021

✅ Supplies 70 MW from Enel's Roadrunner solar project in Texas

✅ Cuts Scope 2 emissions via grid-delivered virtual PPA

 

The Clorox Company and a wholly owned subsidiary of Enel Green Power North America announced today the signing of a 12-year, 70 megawatt (MW) virtual power purchase agreement (VPPA) for the purchase of renewable energy, aligned with carbon-free electricity investments across the power sector beginning in 2021. Representing about half of Clorox's 100% renewable electricity goal in its operations in the U.S. and Canada, this agreement is expected to help Clorox accelerate achieving its goal in 2021, four years ahead of the company's original plan.

"Climate change and rising greenhouse gas emissions pose a real threat to the health of our planet and ultimately the long-term well-being of people globally. That's why we've taken action for more than 10 years to measure and reduce the carbon footprint of our operations," said Benno Dorer, chair and CEO, The Clorox Company. "Our agreement with Enel helps to expand U.S. renewable energy infrastructure, reflecting our view that companies like Clorox play an important role in addressing global climate change, as landmark policies like the U.S. climate deal further accelerate the transition. We believe this agreement will significantly contribute toward Clorox achieving our goal of 100% renewable electricity in our operations in the U.S. and Canada in 2021, four years earlier than originally planned. Our commitment to climate stewardship is an important pillar of our new IGNITE strategy and part of our overall efforts to drive Good Growth – growth that's profitable, sustainable and responsible."

The 70MW VPPA between Clorox and Enel Green Power North America for the purchase of renewable energy delivered to the electricity grid is for the second phase of Enel's Roadrunner solar project to be built in Texas, and complement global clean energy collaborations such as Canada-Germany hydrogen cooperation announced recently. Roadrunner is a 497-direct current megawatt (MWdc) solar project that is being built in two phases. The first phase, currently under construction, comprises around 252 MWdc and is expected to be completed by the end of 2019, while the remaining 245 MWdc of capacity is expected to be completed by the end of 2020. Once fully operational, the solar plant could generate up to 1.2 terawatt-hours (TWh) of electricity annually, while avoiding an estimated 800,000 metric tons of carbon dioxide emissions per year.

Based on the U.S. Environmental Protection Agency Greenhouse Gas Equivalencies Calculator[i], this VPPA is estimated to avoid approximately 140,000 metric tons of CO2 emissions each year. This is equivalent to the annual impact that 165,000 acres of U.S. forest can have in removing CO2 from the atmosphere, and illustrates why cleaning up Canada's electricity is central to emissions reductions in the power sector, or the carbon impact of the electricity needed to power more than 24,000 U.S. homes annually.

"We are proud to support Clorox on their path towards 100% renewable electricity in its operations in the U.S. and Canada by helping them achieve about half their goal through this agreement," said Georgios Papadimitriou, head of Enel Green Power North America. "This agreement with Clorox reinforces the continued significance of renewable energy as a fundamental part of any company's sustainability strategy."

Schneider Electric Energy & Sustainability Services advised Clorox on this power purchase agreement and, amid heightened investor attention exemplified by the Duke Energy climate report, supported the company in its project selection, analysis, negotiations and deal execution.

 

Clorox Commits to Scope 1, 2 and 3 Science-Based Targets

For more than 10 years, Clorox has consistently achieved its goals to reduce greenhouse gas emissions in its operations. Clorox is focused on setting emissions reduction targets in line with climate science. As a participant in the Science Based Targets Initiative, Clorox has committed to setting and achieving science-based greenhouse gas emissions reduction targets in its operations (Scopes 1 and 2) and across its value chain (Scope 3), and consistent with national pathways such as Canada's net-zero 2050 target pursued by policymakers. The targets are considered "science-based" if they are in line with what the latest climate science says is necessary to meet the goals of the 2015 Paris Agreement – a global environmental accord to address climate change and its negative impacts.

Clorox's climate stewardship goals are part of its new integrated corporate strategy called IGNITE, which includes several other environmental, social and governance (ESG) goals and reflects lessons from Canada's electricity progress in scaling clean power. More comprehensive information about Clorox's IGNITE ESG goals can be found here. Information on Clorox's 2020 ESG strategy can be found in its fiscal year 2019 annual report.

 

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Rio Tinto seeking solutions that transform heat from underground mines into electricity

Rio Tinto waste heat-to-electricity initiative captures underground mining thermal energy at Resolution Copper, Arizona, converting it to renewable power for cooling systems and microgrids, advancing decarbonization, energy efficiency, and the miner's 2050 carbon-neutral goal.

 

Key Points

A program converting underground thermal energy into on-site electricity to cut emissions and support mine cooling.

✅ Captures low-grade heat from rock and geothermal water.

✅ Generates electricity for ventilation, refrigeration, microgrids.

✅ Scalable, safe, and grid- or storage-ready for peak demand.

 

The world’s second-largest miner, Rio Tinto announced that it is accepting proposals for solutions that transform waste heat into electricity for reuse from its underground operations.

In a press release, the company said this initiative is aimed at drastically reducing greenhouse gas emissions, even as energy-intensive projects like bitcoin mining operations expand, so that it can achieve its goal of becoming carbon neutral by 2050.

Initially, the project would be implemented at the Resolution copper mine in Arizona, which Rio owns together with BHP (ASX, LON: BHP). At this site, massive electrically-driven refrigeration and ventilation systems, aligned with broader electrified mining practices, are in charge of cooling the work environment because of the latent heat from the underground rock and groundwater. 

THE INITIATIVE IS AIMED AT REDUCING GREENHOUSE GAS EMISSIONS SO THAT RIO CAN ACHIEVE ITS GOAL OF BECOMING CARBON NEUTRAL BY 2050

“When operating, the Resolution copper mine will be a deep underground block cave mine some 7,000 feet (~2 kilometres) deep, with ambient air temperatures ranging between 168°F to 180°F (76°C to 82°C), conditions that, during heat waves, when bitcoin mining power demand can strain local grids, further heighten cooling needs, and underground water at approximately 194°F (90°C),” the media brief states.

“Rio Tinto is seeking solutions to capture and reuse the heat from underground, contributing towards powering the equipment needed to cool the operations. The solution to capture and convert this thermal energy into electrical energy, such as emerging thin-film thermoelectrics, should be safe, environmentally friendly and cost-effective.”

The miner also said that, besides capturing heat for reuse, the solution should generate electrical energy from low range temperatures below the virgin rock temperature and/or from the high thermal water coming from the underground rock, similar to using transformer waste heat for heating in the power sector. 

At the same time, the solution should be scalable and easily transported through the many miles of underground tunnels that will be built to ventilate, extract and move copper ore to the surface.

Rio requires proposals to offer the possibility of distributing the electrical energy generated back into the electrical grid from the mining operation or stored and used at a later stage when energy is required during peak use periods, especially as jurisdictions aim to use more electricity for heat in colder seasons. 

 

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