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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Germany agrees 200 bln euro package to shield against surging energy prices

Germany Energy Price Defensive Shield counters soaring gas and electricity costs with a gas price brake, VAT cut, subsidies for households and SMEs, LNG terminals, renewables, temporary nuclear extension, and targeted borrowing to curb inflation.

 

Key Points

A 200 billion euro package to cap energy costs, subsidize basics, and stabilize inflation for firms and households.

✅ Gas price brake and VAT cut reduce consumer and SME energy bills.

✅ Temporary electricity subsidies and nuclear extension aid winter supply.

✅ Funded via new borrowing; supports LNG and renewable expansion.

 

German Chancellor Olaf Scholz set out a 200 billion euro ($194 billion) "defensive shield", including a gas price brake and a cut in sales tax for the fuel, to protect companies and households from the impact of soaring energy prices in Germany.

Europe's biggest economy is trying to cope with surging gas and electricity costs, with local utilities seeking help, caused largely by a collapse in Russian gas supplies to Europe, which Moscow has blamed on Western sanctions following its invasion of Ukraine in February.

3 minute readSeptember 29, 202211:35 AM PDTLast Updated 6 days ago
Germany agrees 200 bln euro package to shield against surging energy prices
By Holger Hansen and Kirsti Knolle

"Prices have to come down, so the government will do everything it can. To this end, we are setting up a large defensive shield," said Scholz.

Under the plans, to run until spring 2024, the government will introduce an emergency price brake on gas, the details of which will be announced next month, while Europe weighs emergency measures to limit electricity prices across the bloc. It is scrapping a planned gas levy meant to help firms struggling with high spot market prices. 

A temporary electricity price brake will subsidise basic consumption for consumers and small and medium-sized companies, and complements an electricity subsidy for industries under discussion. Sales tax on gas will fall to 7% from 19%.

In its efforts to cut its dependence on Russian energy, Germany is also promoting the expansion of renewable energy and developing liquefied gas terminals, but rolling back European electricity prices remains complex.

To help households and companies weather any winter supply disruption, amid rising heating and electricity costs this winter, especially in southern Germany, two nuclear plants previously due to close by the end of this year will be able to keep running until spring 2023.

The package will be financed with new borrowing this year, as Berlin makes use of the suspension of a constitutionally enshrined limit on new debt of 0.35% of gross domestic product.

Finance Minister Christian Lindner has said he wants to comply with the limit again next year, even as the EU outlines gas price cap strategies for the market.

Lindner, of the pro-business Free Democrats (FDP) who share power with Scholz's Social Democrats and the Greens, said on Thursday the country's public finances were stable.

"We can put it no other way: we find ourselves in an energy war," said Lindner. "We want to clearly separate crisis expenditure from our regular budget management, we want to send a very clear signal to the capital markets."

He also said the steps would act as a brake on inflation, which hit its highest level in more than a quarter of century in September.

Opposition conservative Markus Soeder, premier of the southern state of Bavaria, said the steps gave the right signal.

"It gives industry and citizens confidence that we can get through the winter," he said.

 

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South Africa's Eskom could buy less power from wind farms during lockdown

Eskom Wind Power Curtailment reflects South Africa's lockdown-driven drop in electricity demand, prompting grid-balancing measures as Eskom signals reduced IPP procurement from renewable energy projects during low-demand hours, despite guarantees and flexible generation constraints.

 

Key Points

A temporary reduction of wind IPP purchases by Eskom to balance surplus grid capacity during the COVID-19 lockdown slump

✅ Demand drop of 7,500 MW reduced need for variable renewables.

✅ Curtailment likely during low-demand early-morning hours.

✅ IPP revenues protected via contract extensions and guarantees.

 

South African state utility Eskom has told independent wind farms that it could buy less of their power in the coming days, as electricity demand has plummeted during a lockdown, reflecting the Covid-19 impact on renewables worldwide, aimed at curbing the spread of the coronavirus.

Eskom, which is mired in a financial crisis and has struggled to keep the lights on in the past year, said on Tuesday that power demand had dropped by more than 7,500 megawatts since the lockdown started on Friday and that it had taken offline some of its own generators.

The utility supplements its generating capacity, which is mainly derived from coal, by buying power from solar and wind farms, as wind becomes a competitive source of electricity globally, under contracts signed as part of the government’s renewable energy programme.

Spokesman Sikonathi Mantshantsha said Eskom had not yet curtailed power procurement from wind farms but that it had told them, echoing industry warnings on wind investment risk seen by the sector, this could happen “for a few hours a day during the next few days, perhaps until the lockdown is lifted”.

“Most of them are able to feed power into the grid in the early hours of the day. That coincides with the lowest demand period and can highlight curtailment challenges when supply exceeds need. And we now have a lot more capacity than needed,” Mantshantsha said.

During the lockdown imposed by President Cyril Ramaphosa, businesses apart from those deemed “essential services” are closed, mirroring Spanish wind factory closures elsewhere. Many power-hungry mines and furnaces have suspended operations.

Eskom has relatively little of its own “flexible generation” capacity, which can be ramped up or down easily, unlike regions riding a renewables boom in South Australia to export power.

The government has committed to buy up to 200 billion rand ($11.1 billion) of electricity from independent power producers and has issued state guarantees for those purchases.

“They will be compensated for their losses, amid U.S. utility-solar slowdowns being reported - each day lost will be added to their contracts,” Mantshantsha said of the wind farms. “In the end they will not be worse off.”

 

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Ontario First Nations urge government to intervene in 'urgently needed' electricity line

East-West Transmission Project Ontario connects Thunder Bay to Wawa, facing OEB bidding, Hydro One vs NextBridge, First Nations consultation, environmental assessment, Pukaskwa National Park route, and reliability needs for Northwestern Ontario industry and communities.

 

Key Points

A 450 km Thunder Bay-Wawa power line proposal facing OEB bidding, Hydro One competition, and First Nations consultation.

✅ Competing bids: Hydro One vs NextBridge under OEB rules

✅ First Nations cite duty to consult and environmental review gaps

✅ Route debate: Pukaskwa Park vs bypass; jobs and reliability at stake

 

Leaders of six First Nations are urging the Ontario government to "clean up" the bureaucratic process that determines who will build an "urgently needed" high-capacity power transmission line to service northern Ontario.

The proposed 450 kilometre East-West Transmission Project is set to stretch from Thunder Bay to Wawa, providing much-needed electricity to northern Ontario. NextBridge Infrastructure, in partnership with Bamkushwada Limited Partnership (BLP) — an entity the First Nations created in order to become co-owners and active participants in the economic development of the line — have been the main proponents of the project since 2012 and were awarded the right to construct.

In 2018, Hydro One appealed to the previous Liberal government with a proposal to build the transmission line with lower maintenance costs. On Dec. 20, the Ontario Energy Board (OEB) issued a decision that said it will issue the contract to construct the project to the company with the lowest bid, even as a Manitoba Hydro line delay followed a board recommendation in a comparable case.

The transmission regime in Ontario allows competing bids at the beginning of a project to designate a transmitter, and then again at the end of the project to award leave to construct.

As a result, the Hydro One was permitted to submit a competing bid, five years after it was first proposed. The chiefs of the six First Nations say that will delay the project by two years, impede their land and violate their rights. The former Liberal government under which the project was initiated "left the door open" for competition to enter this late in the construction, according to the community leaders.

"The former government created this mess and Hydro One has taken advantage of this loophole," Fort William First Nation Chief Peter Collins said in a Queen's Park news conference on Thursday. "Hydro One is an interloper coming in at the last minute, trying taking over the project and all the hard work that has been done, without doing the work it needs to do."

 

Mess will explode, says chief

According to Collins, the Ontario Energy Board is likely to choose Hydro One's late submission in February, "causing this mess to explode." The electricity and distribution utility has not completed any of the legal requirements demanded by a project of this magnitude, Collins said, including extensive consultations with First Nations, such as oral traditional evidence hearings that inform regulators, and thorough environment assessments. He speculated that by ignoring these two things, even though in B.C. Ottawa did not oppose a Site C work halt pending a treaty rights challenge, Hydro One's bid will be the lowest cost.

"Hydro One's interference is a big problem," said Collins. He was flanked by the leaders of the Pic Mobert First Nation, Opwaaganasiniing (also known as the Red Rock Indian Band), Michipicoten, Biigtigong Nishnaabeg — or Pic River First Nation — and Pays Plat First Nation.

Collins also highlighted that Hydro One's proposed route for the transmission line will go through Pukaskwa National Park on which there are Aboriginal title claims, and noted that an opponent of the Site C dam has been sharing concerns with northerners, underscoring the need for meaningful engagement. NextBridge's proposal, Collins said, will go around the park.

If Hydro One is awarded the construction project, at risk, too, are as many as 1,000 job opportunities in northern Ontario (including the Ring of Fire) that are expected from NextBridge's proposal, as well as the "many millions" in contracting opportunities for the communities, Collins said.

"That companies such as Hydro One can do this and dissolve all that has been developed by NextBridge and our [partnership] and all the opportunities we have created will signal to ... everyone in Ontario that Ontario's not open for business, at least fair business," Collins said.

 

Ontario Energy Minister 'disappointed' by OEB's decision

In an email statement to National Observer, Energy Minister Greg Rickford's press secretary said the government acknowledged the concerns of the First Nations leaders, and is "disappointed that the OEB continues to stall on this important project."

"The East-West Tie project is a priority for Ontario because it is needed to provide a reliable and adequate supply of electricity to northwestern Ontario to support economic growth," she wrote.

In October, Rickford wrote to the OEB outlining his expectation that a prompt decision would be made through an efficient and fair process.

Despite the minister’s request, the OEB delayed a decision on this project in December — as in B.C., a utilities watchdog has pressed for answers on Site C dam stability — pushing the service date back to at least 2021. In 2017, NextBridge said that, pending OEB approval, it would start construction in 2018, with completion scheduled for 2020.

Without the transmission line, the community faces a higher likelihood of power outages and less reliable electricity overall.

"Our government takes the duty to consult seriously and it is committed to ensuring that all Indigenous communities are properly consulted and kept informed regardless of the result of the OEB process," Rickford's office's statement said.

In a letter sent to Premier Doug Ford, Rickford and to Environment Minister Rod Phillips, all members of the Bamkushwada Limited Partnership said they will be compelled to appeal the OEB's decision if the right to construct is given to Hydro One.

The entire situation, they wrote in their letter, is "an undeniable mess" that requires government intervention.

"If the Ontario government can correct this looming outcome, it is incumbent on the Ontario government to do so," they wrote, urging the government to "take all legal means to prevent the OEB from rendering an unconstitutional and unjust decision."

"Our First Nations and the north have waited five long years for this transmission project," Collins said. "Enough is enough."

 

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Fish boom prompts energy conglomerate to spend $14.5M to bury subsea cables

Maritime Link Cable Burial safeguards 200-kV subsea cables in the Cabot Strait as Emera and Nova Scotia Power trench lines to mitigate bottom trawling risks from a redfish boom, ensuring Muskrat Falls hydro delivery.

 

Key Points

Trenching Cabot Strait subsea power cables to prevent redfish-driven bottom trawling and ensure Muskrat Falls power.

✅ $14.492M spent trenching 59 km at 400 m depth

✅ Protects 200-kV, 170-km subsea interconnects from trawls

✅ Driven by Gulf redfish boom; DFO and UARB consultations

 

The parent company of Nova Scotia Power disclosed this week to the Utility and Review Board, amid Site C dam watchdog attention to major hydro projects, that it spent almost $14,492,000 this summer to bury its Maritime Links cables lying on the floor of the Cabot Strait between Newfoundland and Cape Breton.

It's a fish story no one saw coming, at least not Halifax-based energy conglomerate Emera.

The parent company of Nova Scotia Power disclosed this week to the Utility and Review Board that it spent almost $14,492,000 this summer to bury its Maritime Link cables lying on the floor of the Cabot Strait between Newfoundland and Cape Breton.

The cables were protected because an unprecedented explosion in the redfish population in the Gulf of St Lawrence is about to trigger a corresponding boom in bottom trawling in the area.

Also known as ocean perch, redfish were not on anyone's radar when the $1.5-billion Maritime Link was designed and built to carry Muskrat Falls hydroelectricity from Newfoundland to Nova Scotia.

The two 200-kilovolt electrical submarine cables spanning the Cabot Strait are the longest in North America, compared with projects like the New England Clean Power Link planned further south. They are each 170 kilometres long and weigh 5,500 tonnes.

Nova Scotia Power customers are paying for the Maritime Link in return for a minimum of 20 per cent of the electricity generated by Muskrat Falls over 35 years.

The electricity is supposed to start sending first electricity through the Maritime Link in mid-2020.

First time cost disclosed
In August, the company buried 59 kilometres of subsea cables one metre below the bottom at depths of 400 metres.

"These cables had not been previously trenched due to the absence of fishing activities at those depths when the cables were originally installed," spokesperson Jeff Myrick wrote in an email to CBC News in October.

Ratepayers will get the bill next year, as utilities also face risks like copper theft that can drive costs in the region. Until now, the company had declined to release costs relating to protecting the Maritime Link.

The bill will be presented to regulators, a process that has affected projects such as a Manitoba Hydro line to Minnesota, when the company applies to recover Maritime Link costs from Nova Scotia Power ratepayers in 2020.

Myrick said the company was acting after consultation with the Department of Fisheries and Oceans.

Unexpected consequences
After years of overfishing in the 1980s and early 1990s, redfish quotas were slashed and a moratorium imposed on some redfish.

Confusingly, there are actually two redfish species in the Gulf of St. Lawrence.

But very strong recent year classes, that have coincided with warming waters in the gulf, as utilities adapt to climate change considerations grow, have produced redfish in massive numbers.

After years of overfishing, the redfish population is now booming in the Gulf of St. Lawrence. (Submitted by Marine Institute)
There is now believed to be three-million tonnes of redfish in the Gulf of St Lawrence.

The Department of Fisheries and Oceans is expected to increase quotas in the coming years and the fishing industry is gearing up in a big way.

Earlier this month, Scotia Harvest announced it will begin construction of a new $14-million fish plant in Digby next spring in part to process increased redfish catches.

 

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Ontario's EV Jobs Boom

Honda Canada EV Supply Chain accelerates electric vehicles with Ontario assembly, battery manufacturing, CAM/pCAM and separator plants in Alliston, creating green jobs, strengthening domestic manufacturing, and reducing greenhouse gas emissions across North America.

 

Key Points

A $15B Ontario initiative for end-to-end EVs, batteries, and components, creating jobs and cutting emissions.

✅ Alliston EV assembly and battery plants anchor production.

✅ CAM/pCAM and separator facilities via POSCO, Asahi JV.

✅ $15B build-out drives jobs, R&D, and lower emissions.

 

The electric vehicle (EV) revolution is gaining momentum in Canada, with Honda Canada announcing a historic $15 billion investment to establish the country's first comprehensive EV supply chain in Ontario. This ambitious project promises to create thousands of new jobs, solidify Canada's position in the EV market, and significantly reduce greenhouse gas emissions.

Honda's Electrifying Vision

The centerpiece of this initiative is a brand-new, world-class electric vehicle assembly plant in Alliston, Ontario. This will be Honda's first dedicated EV assembly plant globally, marking a significant shift towards a more sustainable future. Additionally, a standalone battery manufacturing plant will be constructed at the same location, ensuring a reliable and efficient domestic supply of EV batteries.

Beyond Assembly: A Complete Ecosystem

Honda's vision extends beyond just vehicle assembly. The investment also includes the construction of two additional plants dedicated to critical battery components, mirroring activity such as a Niagara Region battery plant in Ontario: a cathode active material and precursor (CAM/pCAM) processing plant and a separator plant. These facilities, established through joint ventures with POSCO Future M Co., Ltd. and Asahi Kasei Corporation, will ensure a comprehensive in-house EV production capability.

Jobs, Growth, and a Greener Future

This large-scale project is expected to create significant economic benefits for Ontario. The construction and operation of the new facilities are projected to generate over one thousand well-paying manufacturing jobs, similar to GM's Ontario EV plant announcements that underscore employment gains across the province. Additionally, the investment will stimulate growth within Ontario's leading auto parts supplier and research and development ecosystems, bolstered by government-backed EV plant upgrades that reinforce local supply chains, creating even more indirect job opportunities.

But the benefits extend beyond the economy. The transition to electric vehicles plays a crucial role in combating climate change. By bringing EV production onshore, Honda Canada is contributing to a significant reduction in greenhouse gas emissions, aligning with Canada's ambitious climate goals for transportation.

A Catalyst for Change

Honda's investment is a significant vote of confidence in Canada's potential as a leader in the EV industry, as recent EV manufacturing deals put the country in the race. The establishment of this comprehensive EV supply chain will not only benefit Honda, but also attract other EV manufacturers and solidify Ontario's position as a North American EV hub.

The road ahead for Canada's EV industry is bright. With Honda's commitment and this groundbreaking project, and with Ford's Oakville EV plans underway, Canada is well on its way to a cleaner, more sustainable future powered by electric vehicles.

 

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Electric Ferries Power Up B.C. with CIB Help

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Key Points

BC Ferries Electrification is the plan to deploy zero-emission ferries and charging, funded by CIB, to reduce emissions.

✅ $75M CIB loan funds four electric ferries and chargers

✅ Cuts 9,000 tonnes CO2e annually on short Island-class routes

✅ Quieter service, lower operating costs, and redeployed hybrids

 

British Columbia is taking a significant step towards a cleaner transportation future with the electrification of its ferry fleet. BC Ferries, the province's ferry operator, has secured a $75 million loan from the Canada Infrastructure Bank (CIB) to fund the purchase of four zero-emission ferries and the necessary charging infrastructure to support them.

This marks a turning point for BC Ferries, which currently operates a fleet reliant on diesel fuel. The new Island-class electric ferries will be deployed on shorter routes, replacing existing hybrid ships on those routes. These hybrid ferries will then be redeployed on routes that haven't yet been converted to electric, maximizing their lifespan and efficiency.

Environmental Benefits

The transition to electric ferries is expected to deliver significant environmental benefits. The new vessels are projected to eliminate an estimated 9,000 tonnes of greenhouse gas emissions annually, and electric ships on the B.C. coast already demonstrate similar gains, contributing to British Columbia's ambitious climate goals. Additionally, the quieter operation of electric ferries will create a more pleasant experience for passengers and reduce noise pollution for nearby communities.

Economic Considerations

The CIB loan plays a crucial role in making this project financially viable. The low-interest rate offered by the CIB will help to keep ferry fares more affordable for passengers. Additionally, the long-term operational costs of electric ferries are expected to be lower than those of diesel-powered vessels, providing economic benefits in the long run.

Challenges and Opportunities

While the electrification of BC Ferries is a positive development, there are some challenges to consider. The upfront costs of electric ferries and charging infrastructure are typically higher than those of traditional options, though projects such as the Kootenay Lake ferry show growing readiness. However, advancements in battery technology are constantly lowering costs, making electric ferries a more cost-effective choice over time.

Moreover, the transition presents opportunities for job creation in the clean energy sector, with complementary initiatives like the hydrogen project broadening demand. The development, construction, and maintenance of electric ferries and charging infrastructure will require skilled workers, potentially creating a new avenue for economic growth in British Columbia.

A Pioneering Example

BC Ferries' electrification initiative sets a strong precedent for other ferry operators worldwide, including Washington State Ferries pursuing hybrid-electric upgrades. This project demonstrates the feasibility and economic viability of transitioning to cleaner marine transportation solutions. As battery technology and charging infrastructure continue to develop, we can expect to see more widespread adoption of electric ferries across the globe.

The collaboration between BC Ferries and the CIB paves the way for a greener future for BC's transportation sector, where efforts like Harbour Air's electric aircraft complement marine electrification. With cleaner air, quieter operation, and a positive impact on climate change, this project is a win for the environment, the economy, and British Columbia as a whole.

 

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