Generating Electricity with Flowing Water

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A team led by Professor Daniel Kwok and Professor Larry Kostiuk from the University of Alberta, Edmonton, Canada, has developed the first new way to generate electricity since 1839.

"Despite the importance of electrical power in modern society, there are limited methods of converting energy to electricity. Common ways to create electricity include electromagnetic induction that converts the work applied to a conductor being forced through a magnetic field (Faraday, 1831), fuel cells that draw on materials' chemical energy (Grove, 1839), and photovoltaics that use electromagnetic radiation (Becquerel, 1839). This new method of directly converting the energy associated with a liquid (e.g. water) could introduce a revolution in electricity production." wrote Professor Kostiuk in a summary provided to journalists.

In research published on the 20th of October, 2003, in the Institute of Physics journal, Journal of Micromechanics and Microengineering, Kwok, Kostiuk and their collaborators describe a method of generating electrical power from the natural electrokinetic properties of fluids forced through microchannels.

The electricity is generated by separating electrical charges in the fluid at a solid-fluid interface. When the solid is in contact with the fluid, some of the atoms in the solid disassociate - forming negative, free, electrons and positive ions. Depending on the type of solid, one or the other of these will flow off into the fluid, leaving the solid with a net charge. Ideally the solid is not a conductor, so this charge is localized at the solid-fluid interface rather than being diluted through out the solid. This charge then attracts oppositely charged ions and repels similarly charged ions in the fluid. This forms a thin layer (known as the Electric Double Layer or EDL) in the fluid (between nanometers and micrometers in thickness) that is charged. When the attracted ions approach the surface, they can accept or donate charge to neutralize the surface but an equilibrium is quickly reached between the disassociation that creates the charge and the charge nullification effects of the ions.

By making fluid flow through narrow channels with a diameter similar to the EDL, the attracted type of ion will be able to flow through the EDL filled channel with ease, while the other sign is largely rejected. In the figure, you can see a positive solid creating a negatively charged EDL in the channel. Neutral water can flow through this layer, and when a negatively charged ion enters from the left, the mutual repulsion between the ions pushes one out from the right hand end, but when a positive ion flows towards the channel, the positive solid prevents it from entering the channel as this repulsion overwhelms the attraction due tot he negative ions in the EDL.

This flow leads to a separation of charges on either side of the channel, which creates a voltage between the two ends. If an object, like a cell phone, is connected between the two ends, a current will flow that can be used to power the device. Although the power generated from a single channel is extremely small, millions of parallel channels can be used in a small volume to increase the power output to useful levels.

Speaking to the IOP press office, Professor Kostiuk said: "This discovery has a huge number of possible applications. It's possible that it could be a new alternative energy source to rival wind and solar power, but this would need huge bodies of water to work on a commercial scale. Hydrocarbon fuels are still the best source of energy but they're fast running out and so new options like this one could be vital in the future.

"The applications in electronics and microelectronic devices are very exciting. This technology could provide a new power source for devices such as mobile phones or calculators which could be charged up by pumping water to high pressure. What we have achieved so far is to show that electrical power can be directly generated from flowing liquids in microchannels".

It is possible to make a (relatively) simple device that works similarly to this at home or in the class room - the Kelvin Water Dropper which uses electrical repulsion to separate charge in a very similar manner.

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Key Ontario power system staff may end up locked down at work sites due to COVID-19, operator says

Ontario IESO COVID-19 Control Room Measures detail how essential operators safeguard the electricity grid with split shifts, backup control centres, real-time balancing, deep cleaning, social distancing, and shelter-in-place readiness to maintain reliable power.

 

Key Points

Measures that protect essential grid operators with split shifts, backup sites, and hygiene to keep power reliable.

✅ Split teams across primary and backup control centres

✅ 12-hour shifts with remote handoffs and deep cleaning

✅ Real-time grid modeling to balance demand and supply

 

A group of personnel key to keeping Ontario's electricity system functioning may end up locked down in their control centres due to the COVID-19 crisis, according to the head of the province's power operator.

But that has so far proven unnecessary with a change-up in routine, Independent Electricity System Operator CEO Peter Gregg said.

While about 90 per cent of staff were sent to work from home on March 13, another 48 control-room operators deemed essential are still going into work, Gregg said in an interview.

"We identified a smaller cohort of critical operations room staff that need to go in to operate the system out of our control centres," Gregg said. "My biggest concern is to maintain their health, their safety as we rely on them to do this critical work."

Some of the operators manage power demand and supply in real time as Ontario electricity demand shifts, by calling for more or less generation and keeping an eye on the distribution grid, which also allows power to flow to and from Ontario's neighbours. Others do scenario planning and modelling to prepare for changes.

The essential operators have been split into eight teams of six each working 12-hour shifts. The day crew works out of a control centre near Toronto and the night shift out of a backup centre in the city's west end, Gregg said.

"That means that we're not having physical hand-off between control room operators on shift change -- we can do it remotely -- and it also allows us to do deep cleansing," Gregg said. "We're fortunate that the way the room is set up allows us to practice good social distancing."

Should it become necessary, he said, bed, food and other on-site arrangements have been made to allow the operators to stay at their workplaces as a similar agency in New York has done.

"If we do need to shelter these critical employees in place, we've got the ability to do so."

IESO is responsible for ensuring a balance between supply and demand for electricity across the province. Because power cannot be stored, the IESO ensures generators produce enough power to meet peak demand while making sure they don't produce too much.

"You're seeing, obviously, commercial demand drop, some industrial demand drop," Gregg said. "But you're also seeing a shift in the demand curve as well, where normally you have people heading off to work and so residential demand would go down. But obviously with them staying home, you're seeing an increase in residential electricity use across the province."

Some utilities have indicated no cuts to peak rates for self-isolating customers, with Hydro One peak pricing remaining in place for now.

IESO also runs and settles the wholesale electricity markets. Market prices are set based on accepted offers to supply electricity, while programs supporting stable electricity pricing for industrial and commercial users can affect costs against forecast demand.

With the pandemic forcing many businesses to close and people to stay home, and provincial electricity relief for families and small businesses in place, typical power needs fallen about seven per cent at a time of year that would normally see demand soften anyway. It remains to be seen whether, and how much, power needs shift further amid stringent isolation measures and the ongoing economic impact of the outbreak.

Gregg said the operator is constantly modeling different possibilities.

"What we do normally is prepare for all of these sort of emergency scenarios, as reflected in the U.S. grid response coverage, and test and drill for these," he said. "What we're experiencing over the last few weeks is that those drills come in handy because they help us prepare for when the real-time situation actually happens."

 

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Hydro One CEO's $4.5M salary won't be reduced to help cut electricity costs

Hydro One CEO Salary shapes debate on Ontario electricity costs, executive compensation, sunshine list transparency, and public disclosure rules, as officials argue pay is not driving planned hydro rate cuts for consumers.

 

Key Points

Hydro One CEO pay disclosed in public filings, central to debates on Ontario electricity rates and transparency.

✅ 2016 compensation: $4.5M (salary + bonuses)

✅ Excluded from Ontario's sunshine list after privatization

✅ Government says pay won't affect planned hydro rate cuts

 

The $4.5 million in pay received by Hydro One's CEO is not a factor in the government's plan to cut electricity costs for consumers, an Ontario cabinet minister said Thursday amid opposition concerns about the executive's compensation and wider sector pressures such as Manitoba Hydro's rising debt in other provinces.

Treasury Board President Liz Sandals made her comments on the eve of the release of the province's so-called sunshine list.

The annual disclosure of public-sector salaries over $100,000 will be released Friday, but Hydro One salaries such as that of company boss Mayo Schmidt won't be on it.Though the government still owns most of Hydro One — 30 per cent has been sold — the company is required to follow the financial disclosure rules of publicly traded companies, which means disclosing the salaries of its CEO, CFO and next three highest-paid executives, and financial results such as a Q2 profit decline in filings.

New filings show that Schmidt was paid $4.5 million in 2016 — an $850,000 salary plus bonuses — and those top five executives were paid a total of about $11.7 million. 

"Clearly that's a very large amount," said Sandals. Sandals wouldn't say whether or not she thought the pay was appropriate at a time when the government is trying to reduce system costs and cut people's hydro bills.

Mayo Schmidt, President & CEO of Hydro One Limited and Hydro One Inc. (Hydro One )

But she suggested the CEO's salary was not a factor in efforts to bring down hydro prices, even as Hydro One shares fell after a leadership shakeup in a later period. "The CEO salary is not part of the equation of will 'we be able to make the cut,"' she said. "Regardless of what those salaries are, we will make a 25-per-cent-off cut." The cut coming this summer is actually an average of 17 per cent -- the 25-per-cent figure factors in an earlier eight-per-cent rebate.

NDP Leader Andrea Horwath, who has proposed to make hydro public again in Ontario, said the executive salaries are relevant to cutting hydro costs.

"All of this is cost of operating the electricity system, it's part of the operating of Hydro One and so of course those increased salaries are going to impact the cost of our electricity," she said.

Schmidt was appointed Aug. 31, 2015, and in the last four months of that year earned $1.3 million, but the former CEO was paid $745,000 in 2014. About 3,800 workers were paid over $100,000 that year, none of whom will be on the sunshine list this year.

Progressive Conservative energy critic Todd Smith has a private member's bill that would put Hydro One salaries back on the list, amid investor concerns about Hydro One that cite too many unknowns.

"The Wynne Liberals don't want the people of Ontario to know that their rates have helped create a new millionaire's club at Hydro One," Smith said. "Hydro One is still under the majority ownership of the public, but Premier Kathleen Wynne has removed these salaries from the public's watchful eye."

The previous sunshine list showed 115,431 people were earning more than $100,000 — an increase of nearly 4,000 people despite the fact 3,774 Hydro One workers were not on the list for the first time.

Tom Mitchell, the former CEO at Ontario Power Generation who resigned last summer, topped the 2015 list at $1.59 million.

 

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Ontario Supports Plan to Safely Continue Operating the Pickering Nuclear Generating Station

Pickering Nuclear Generating Station Refurbishment will enable OPG to deliver reliable, clean electricity in Ontario, cut CO2 emissions, support jobs, boost Cobalt-60 medical isotopes supply, and proceed under CNSC oversight alongside small modular reactor leadership.

 

Key Points

A plan to assess and renew Pickering's B units, extending safe, clean, low-cost power in Ontario for up to 30 years.

✅ Extends zero-emissions baseload by up to 30 years

✅ Requires CNSC approval and rigorous safety oversight

✅ Supports Ontario jobs and Cobalt-60 isotope production

 

The Ontario government is supporting Ontario Power Generation’s (OPG) continued safe operation of the Pickering Nuclear Generating Station. At the Ontario government’s request, as a formal extension request deadline approaches, OPG reviewed their operational plans and concluded that the facility could continue to safely generate electricity.

“Keeping Pickering safely operating will provide clean, low-cost, and reliable electricity to support the incredible economic growth and new jobs we’re seeing, while building a healthier Ontario for everyone,” said Todd Smith, Minister of Energy. “Nuclear power has been the safe and reliable backbone of Ontario’s electricity system since the 1970s and our government is working to secure that legacy for the future. Our leadership on Small Modular Reactors and consideration of a refurbishment of Pickering Nuclear Generating Station are critical steps on that path.”

Maintaining operations of Pickering Nuclear Generation Station will also protect good-paying jobs for thousands of workers in the region and across the province. OPG, which reported 2016 financial results that provide context for its operations, employs approximately 4,500 staff to support ongoing operation at its Pickering Nuclear Generating Station. In total, there are about 7,500 jobs across Ontario related to the Pickering Nuclear Generating Station.

Further operation of Pickering Nuclear Generating Station beyond September 2026 would require a complete refurbishment. The last feasibility study was conducted between 2006 and 2009. With significant economic growth and increasing electrification of industry and transportation, and a growing electricity supply gap across the province, Ontario has asked OPG to update its feasibility assessment for refurbishing Pickering “B” units at the Nuclear Generating Station, based on the latest information, as a prudent due diligence measure to support future electricity planning decisions. Refurbishment of Pickering Nuclear Generating Station could result in an additional 30 years of reliable, clean and zero-emissions electricity from the facility.

“Pickering Nuclear Generating Station has never been stronger in terms of both safety and performance,” said Ken Hartwick, OPG President and CEO. “Due to ongoing investments and the efforts of highly skilled and dedicated employees, Pickering can continue to safely and reliably produce the clean electricity Ontarians need.”

Keeping Pickering Nuclear Generating Station operational would ensure Ontario has reliable, clean, and low-cost energy, even as planning for clean energy when Pickering closes continues across the system, while reducing CO2 emissions by 2.1 megatonnes in 2026. This represents an approximate 20 per cent reduction in projected emissions from the electricity sector in that year, which is the equivalent of taking up to 643,000 cars off the road annually. It would also increase North America’s supply of Cobalt-60, a medical isotope used in cancer treatments and medical equipment sterilization, by about 10 to 20 per cent.

OPG requires approval from the Canadian Nuclear Safety Commission (CNSC) for its revised schedule. The CNSC, which employs a rigorous and transparent decision-making process, will make the final decision regarding Pickering’s safe operating life, even though the station was slated to close as planned earlier. OPG will continue to ensure the safety of the Pickering facility through rigorous monitoring, inspections, and testing.

 

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Alberta breaks summer electricity record, still far short of capacity

Alberta Electricity Peak Demand surged to 10,638 MW, as AESO reported record summer load from air conditioning, Stampede visitors, and heatwave conditions, with ample generation capacity, stable grid reliability, and conservation urged during 5-7 p.m.

 

Key Points

It is the record summer power load in Alberta, reaching 10,638 MW, with evening conservation urged by AESO.

✅ Record 10,638 MW at 4 pm; likely to rise this week

✅ Drivers: A/C use, heat, Stampede visitors

✅ AESO reports ample capacity; conserve 5-7 pm

 

Consumer use hit 10,638 MW, blowing past a previous high of 10,520 MW set on July 9, 2015, said the Alberta Electric System Operator (AESO).

“We hit a new summer peak and it’s likely we’ll hit higher peaks as the week progresses,” said AESO spokeswoman Tara De Weerd.

“We continue to have ample supply, and as Alberta's electricity future trends toward more wind, our generators are very confident there aren’t any issues.”

That new peak was set at 4 p.m. but De Weerd said it was likely to be exceeded later in the day.

Heightened air conditioner use is normally a major driver of such peak electricity consumption, said De Weerd.

She also said Calgary’s big annual bash is also likely playing a role.

“It’s the beginning of Stampede, you have an influx of visitors so you’ll have more people using electricity,” she said.

Alberta’s generation capacity is 16,420 MW, said the AESO, with wind power increasingly outpacing coal in the province today.

There are no plans, she said, for any of the province’s electricity generators to shut down any of their plants for maintenance or other purposes in the near future as demand rises.

The summer peak is considerably smaller than that reached in the depths of Alberta’s winter.

Alberta’s winter peak usage was recorded last year and was 11,458 MW.

Though the province’s capacity isn’t being strained by the summer heat, De Weerd still encouraged consumers to go easy during the peak use time of the day, between 5 and 7 p.m.

“We don’t have to be running all of our appliances at once,” she said.

Alberta exports an insignificant amount of electricity to Montana, B.C. and Saskatchewan, where demand recently set a new record.

The weather forecast calls for temperatures to soar above 30C through the weekend.

In northern Canada, Yukon electricity demand recently hit a record high, underscoring how extreme temperatures can strain systems.

 

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Japan opens part of last town off-limits since nuclear leaks

Futaba Partial Reopening marks limited access to the Fukushima exclusion zone, highlighting radiation decontamination progress, the train station restart, and regional recovery ahead of the Tokyo Olympics after the 2011 nuclear disaster and evacuation.

 

Key Points

A lift of entry bans in Futaba, signaling Fukushima recovery, decontamination progress, and a train station restart.

✅ Unrestricted access to 2.4 km² around Futaba Station

✅ Symbolic step ahead of Tokyo Olympics torch relay

✅ Decommissioning and decontamination to span decades

 

Japan's government on Wednesday opened part of the last town that had been off-limits due to radiation since the Fukushima nuclear disaster nine years ago, in a symbolic move to show the region's recovery ahead of the Tokyo Olympics, even as grid blackout risks have drawn scrutiny nationwide.

The entire population of 7,000 was forced to evacuate Futaba after three reactors melted down due to damage at the town's nuclear plant caused by a magnitude 9. 0 quake and tsunami March 11, 2011.

The partial lifting of the entry ban comes weeks before the Olympic torch starts from another town in Fukushima, as new energy projects like a large hydrogen system move forward in the prefecture. The torch could also arrive in Futaba, about 4 kilometres (2.4 miles) from the wrecked nuclear plant.

Unrestricted access, however, is only being allowed to a 2.4 square-kilometre (less than 1 square-mile) area near the main Futaba train station, which will reopen later this month to reconnect it with the rest of the region for the first time since the accident. The vast majority of Futaba is restricted to those who get permission for a day visit.

The three reactor meltdowns at the town's Fukushima Dai-ichi nuclear power plant spewed massive amounts of radiation that contaminated the surrounding area and at its peak, forced more than 160,000 people to flee, even as regulators later granted TEPCO restart approval for a separate Niigata plant elsewhere in Japan.

The gate at a checkpoint was opened at midnight Tuesday, and Futaba officials placed a signboard at their new town office, at a time when the shutdown of Germany's last reactors has reshaped energy debates abroad.

“I'm overwhelmed with emotion as we finally bring part of our town operations back to our home town," said Futaba Mayor Shiro Izawa. “I pledge to steadily push forward our recovery and reconstruction."

Town officials say they hope to see Futaba’s former residents return, but prospects are grim because of lingering concern about radiation, and as Germany's nuclear exit underscores shifting policies abroad. Many residents also found new jobs and ties to communities after evacuating, and only about 10% say they plan to return.

Futaba's registered residents already has decreased by 1,000 from its pre-disaster population of 7,000. Many evacuees ended up in Kazo City, north of Tokyo, after long bus trips, various stopovers and stays in shelters at an athletic arena and an abandoned high school. The town's government reopened in a makeshift office in another Fukushima town of Iwaki, while abroad projects like the Bruce reactor refurbishment illustrate long-term nuclear maintenance efforts.

Even after radiation levels declined to safe levels, the region's farming and fishing are hurt by lingering concerns among consumers and retailers. The nuclear plant is being decommission in a process that will take decades, with spent fuel removal delays extending timelines, and it is building temporary storage for massive amounts of debris and soil from ongoing decontamination efforts.

 

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Seattle City Light's Initiative Helps Over 93,000 Customers Reduce Electricity Bills

Seattle City Light Energy Efficiency Programs help 93,000 residents cut bills with rebates, home energy audits, weatherization, conservation workshops, and sustainability tools, reducing electricity use and greenhouse gas emissions across Seattle communities.

 

Key Points

They are utility programs that lower electricity use and bills via rebates, energy audits, and weatherization services.

✅ Rebates for ENERGY STAR appliances and efficient HVAC upgrades

✅ Free audits with tailored recommendations and savings roadmaps

✅ Weatherization aid for low-income households and renters

 

In a noteworthy achievement for both residents and the environment, Seattle City Light has successfully helped more than 93,000 customers reduce their electricity bills through various energy efficiency programs. This initiative not only alleviates financial burdens for many households, amid concerns about pandemic-era shut-offs that heightened energy insecurity, but also aligns with the city’s commitment to sustainability and responsible energy use.

The Drive for Energy Efficiency

Seattle City Light, the city’s publicly owned electric utility, has been at the forefront of promoting energy efficiency among its customers. Recognizing that energy costs can strain household budgets, the utility has developed a range of programs and tracks emerging utility rate designs to help residents lower their energy consumption and, consequently, their bills.

One of the main aspects of this initiative is the emphasis on education and awareness. By providing customers with tools and resources to understand their energy usage, City Light empowers residents to make informed choices that can lead to substantial savings and prepare for power outage events as well.

Key Programs and Services

Seattle City Light offers a variety of programs aimed at reducing energy consumption. Among the most popular are:

  1. Energy Efficiency Rebates: Customers can receive rebates for purchasing energy-efficient appliances, such as refrigerators, washing machines, and HVAC systems. These appliances are designed to consume less electricity than traditional models, resulting in lower energy bills over time.

  2. Home Energy Audits: Free energy audits are available for residential customers. During these audits, trained professionals assess homes for energy efficiency and provide recommendations on improvements. This personalized service allows homeowners to understand specific changes that can lead to savings.

  3. Weatherization Assistance: This program is particularly beneficial for low-income households. By improving insulation, sealing air leaks, and enhancing overall energy efficiency, residents can maintain comfortable indoor temperatures without over-relying on heating and cooling systems.

  4. Community Workshops: Seattle City Light conducts workshops that educate residents about energy conservation strategies. These sessions cover topics such as smart energy use, seasonal tips for reducing consumption, and the benefits of renewable energy sources, highlighting examples of clean energy engagement in other cities.

The Impact on Households

The impact of these initiatives is profound. By assisting over 93,000 customers in lowering their electricity bills, Seattle City Light not only provides immediate financial relief but also encourages a long-term commitment to energy conservation. This collective effort has resulted in significant reductions in overall energy consumption, contributing to a decrease in greenhouse gas emissions—a critical step in the fight against climate change.

Additionally, the programs have been particularly beneficial for low-income households. By targeting these communities, Seattle City Light ensures that the benefits of energy efficiency reach those who need them the most, promoting equity-focused regulation and access to essential resources.

Looking Ahead: Challenges and Opportunities

While the success of these initiatives is commendable, challenges remain. Fluctuating energy prices can still pose difficulties for many households, especially those on fixed incomes, as some utilities explore minimum charges for low-usage customers in their rate structures. Seattle City Light recognizes the need for ongoing support and resources to help residents navigate these financial challenges.

The utility is committed to expanding its programs to reach even more customers in the future. This includes enhancing outreach efforts to ensure that residents are aware of the available resources, even as debates like utility revenue in a free-electricity future shape planning, and potentially forming partnerships with local organizations to broaden the impact of its initiatives.

 

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