Automakers roll out electric and hybrid hopes

Air Humidity Energy Harvesting converts thin air into clean electricity using air-gen devices with nanopores, delivering continuous renewable energy from ambient moisture, as demonstrated by UMass Amherst researchers in Advanced Materials.

Key Points

A method using nanoporous air-gen devices to harvest continuous clean electricity from ambient atmospheric moisture.

✅ Nanopores drive charge separation from ambient water molecules

✅ Works across materials: silicon, wood, bacterial films

✅ Predictable, continuous power unlike intermittent solar or wind

Sure, we all complain about the humidity on a sweltering summer day. But it turns out that same humidity could be a source of clean, pollution-free energy, aligning with efforts toward cheap, abundant electricity worldwide, a new study shows.

"Air humidity is a vast, sustainable reservoir of energy that, unlike wind and solar power resources, is continuously available," said the study, which was published recently in the journal Advanced Materials.

While humidity harvesting promises constant output, advances like a new fuel cell could help fix renewable energy storage challenges, researchers suggest.

“This is very exciting,” said Xiaomeng Liu, a graduate student at the University of Massachusetts-Amherst, and the paper’s lead author. “We are opening up a wide door for harvesting clean electricity from thin air.”

In fact, researchers say, nearly any material can be turned into a device that continuously harvests electricity from humidity in the air, a concept echoed by raindrop electricity demonstrations in other contexts.

“The air contains an enormous amount of electricity,” said Jun Yao, assistant professor of electrical and computer engineering at the University of Massachusetts-Amherst and the paper’s senior author. “Think of a cloud, which is nothing more than a mass of water droplets. Each of those droplets contains a charge, and when conditions are right, the cloud can produce a lightning bolt – but we don’t know how to reliably capture electricity from lightning.

"What we’ve done is to create a human-built, small-scale cloud that produces electricity for us predictably and continuously so that we can harvest it.”

The heart of the human-made cloud depends on what Yao and his colleagues refer to as an air-powered generator, or the "air-gen" effect, which relates to other atmospheric power concepts like night-sky electricity studies in the field.

In broader renewable systems, flexible resources such as West African hydropower can support variable wind and solar output, complementing atmospheric harvesting concepts as they mature.

The study builds on research from a study published in 2020. That year, scientists said this new technology "could have significant implications for the future of renewable energy, climate change and in the future of medicine." That study indicated that energy was able to be pulled from humidity by material that came from bacteria; related bio-inspired fuel cell design research explores better electricity generation, the new study finds that almost any material, such as silicon or wood, also could be used.

The device mentioned in the study is the size of a fingernail and thinner than a single hair. It is dotted with tiny holes known as nanopores, it was reported. "The holes have a diameter smaller than 100 nanometers, or less than a thousandth of the width of a strand of human hair."

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Site C 500 kV transmission lines strengthen the BC Hydro grid, linking the new substation and Peace Canyon via a 75 kilometre right-of-way to deliver clean energy, with 400 towers built and both circuits energized.

Key Points

High-voltage lines connecting Site C substation to the BC Hydro grid, delivering clean energy via Peace Canyon.

✅ Two 75 km circuits between Site C and Peace Canyon

✅ Connect new 500 kV substation to BC Hydro grid

✅ Over 400 towers built along existing right-of-way

The second and final 500 kilovolt, 75 kilometre transmission line on the Site C project, which has faced stability questions in recent years, has been completed and energized.

With this milestone, the work to connect the new Site C substation to the BC Hydro grid, amid treaty rights litigation that has at times shaped schedules, is complete. Once the Site C project begins generating electricity, much like when the Maritime Link first power flowed between Newfoundland and Nova Scotia, the transmission lines will help deliver clean energy to the rest of the province.

The two 75 kilometre transmission lines run along an existing right-of-way between Site C and the Peace Canyon generating station, a route that has seen community concerns from some northerners. The project’s first 500 kilovolt, 75 kilometre transmission line – along with the Site C substation – were both completed and energized in the fall of 2020.

BC Hydro awarded the Site C transmission line construction contract to Allteck Line Contractors Inc. (now Allteck Limited Partnership) in 2018. Since construction started on this part of the project in summer 2018, crews have built more than 400 towers and strung lines, even as other interties like the Manitoba-Minnesota line have faced scheduling uncertainty, over a total of 150 kilometres.

The two transmission lines are a major component of the Site C project, comparable to initiatives such as the New England Clean Power Link in scale, which also consists of the new 500 kilovolt substation and expanding the existing Peace Canyon 500 kilovolt gas-insulated switchgear to incorporate the two new 500 kilovolt transmission line terminals.

Work to complete three other 500 kilovolt transmission lines that will span one kilometre between the Site C generating station and Site C substation, similar to milestones on the Maritime Link project, is still underway. This work is expected to be complete in 2023.

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TVA Rates and Renewable Energy Scrutiny spotlights electricity rates, distributed energy resources, solar and wind deployment, natural gas plans, grid access charges, energy efficiency cuts, and House oversight of lobbying, FERC inquiries, and least-cost planning.

Key Points

A congressional probe into TVA pricing and practices affecting renewables, energy efficiency, and climate goals.

✅ House panel probes TVA rates, DER and solar policies.

✅ Efficiency programs cut; least-cost planning questioned.

✅ Inquiry on lobbying, hidden fees; FERC scrutiny.

The Tennessee Valley Authority is facing federal scrutiny about its electricity rates and climate action, amid ongoing debates over network profits in other markets.

Members of the House Committee on Energy and Commerce are “requesting information” from TVA about its ratepayer bills and “out of concern” that TVA is interfering with the deployment of renewable and distributed energy resources, even as companies such as Tesla explore electricity retail to expand customer options.

“The Committee is concerned that TVA’s business practices are inconsistent with these statutory requirements to the disadvantage of TVA’s ratepayers and the environment,” the committee said in a letter to TVA CEO Jeffrey Lyash.

The four committee members — U.S. Reps. Frank Pallone, Jr. (D-NJ), Bobby L. Rush (D-IL), Diana DeGette (D-CO), and Paul Tonko (D-NY) — suggested that Tennessee Valley residents pay too much for electricity despite TVA’s relatively low rates, even as regulators have, in other cases, scrutinized mergers like the Hydro One-Avista deal to safeguard ratepayers, underscoring similar concerns. In 2020, Tennessee residents had electric bills higher than the national average, while low-income residents in Memphis have historically faced one of the highest energy burdens in the U.S.

In 2018, TVA reduced its wholesale rate while adding a grid access charge on local power companies—and interfered with the adoption of solar energy. Internal TVA documents obtained through a Freedom of Information Act request by the Energy and Policy Institute revealed that TVA permitted local power companies to impose new fees on distributed solar generation to “lessen the potential decrease in TVA load that may occur through the adoption of [behind the meter] generation.”

Additionally, the committee said TVA is not prioritizing energy conservation and efficiency or “least-cost planning” that includes renewables, as seen in oversight such as the OEB's Hydro One rates decision emphasizing cost allocation. TVA reduced its energy efficiency programs by nearly two-thirds between 2014 and 2018 and cut its energy efficiency customer incentive programs.

At this time, TVA has not aligned its long-term planning with the Biden administration’s goal to achieve a carbon-free electricity sector by 2035. TVA’s generation mix, which is roughly 60% carbon-free, comprises 39% nuclear, 19% coal, 26% natural gas, 11% hydro, 3% wind and solar, and 1% energy efficiency programs, according to TVA.

The committee is “greatly concerned that TVA has invested comparatively little to date in deploying solar and wind energy, while at the same time considering investments in new natural gas generation.”

TVA has announced plans to shutter the Kingston and Cumberland coal plants and is evaluating whether to replace this generation with natural gas, which is a fossil fuel, while debates over grid privatization raise questions about consumer benefits. TVA’s coal and natural gas plants represent most of the largest sources of greenhouses emissions in Tennessee.

TVA responded with a statement without directly addressing the committee’s concerns. TVA said its “developing and implementing emerging technologies to drive toward net-zero emissions by 2050.”

The final question that the House committee posed is whether TVA is funding any political activity. In 2019, the committee questioned TVA about its membership to the now-disbanded Utility Air Regulatory Group, a coalition that was involved in over 200 lawsuits that primarily fought Clear Air Act regulations.

TVA revealed that it had contributed $7.3 million to the industry lobbying group since 2001. Since TVA doesn’t have shareholders, customers paid for UARG membership fees, echoing findings that deferred utility costs burden customers in other jurisdictions. An Office of the Inspector General investigation couldn’t prove whether TVA’s contributions directly funded litigation because UARG didn’t have a line-by-line accounting of what they did with TVA’s dollars.

The congressional committee questioned whether TVA is still paying for lobbying or litigation that opposes “public health and welfare regulations.”

This last question follows a recent trend of questioning utilities about “hidden fees.” In December, the Federal Energy Regulatory Commission issued a Notice of Inquiry to examine how bills from investor-owned utilities might contain fees that fund political activity, and regulators have penalized firms like NT Power over customer notice practices, highlighting consumer protection. The Center for Biological Diversity filed a petition to protect electric and gas customers of investor-owned utilities from paying these fees, which may be used for lobbying, campaign-related donations and litigation.

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Mississauga Fuel Cell Electric Buses advance zero-emission public transit, leveraging hydrogen fuel cells, green hydrogen supply, rapid refueling, and extended range to cut GHGs, improve air quality, and modernize sustainable urban mobility.

Key Points

Hydrogen fuel cell buses power electric drivetrains for zero-emission service, long range, and quick refueling.

✅ Zero tailpipe emissions improve urban air quality

✅ Longer route range than battery-electric buses

✅ Hydrogen fueling is rapid, enabling high uptime

Mississauga, Ontario, is gearing up for a significant shift in its public transportation landscape with the introduction of fuel cell electric buses (FCEBs). This initiative marks a pivotal step toward reducing greenhouse gas emissions and enhancing the sustainability of public transport in the region. The city, known for its vibrant urban environment and bustling economy, is making strides to ensure that its transit system evolves in harmony with environmental goals.

The recent announcement highlights the commitment of Mississauga to embrace clean energy solutions. The integration of FCEBs is part of a broader strategy to modernize the transit fleet while tackling climate change. As cities around the world seek to reduce their carbon footprints, Mississauga’s initiative aligns with global trends toward greener urban transport, where projects like the TTC battery-electric buses demonstrate practical pathways.

What are Fuel Cell Electric Buses?

Fuel cell electric buses utilize hydrogen fuel cells to generate electricity, which powers the vehicle's electric motor. Unlike traditional buses that run on diesel or gasoline, FCEBs produce zero tailpipe emissions, making them an environmentally friendly alternative. The only byproducts of their operation are water and heat, significantly reducing air pollution in urban areas.

The technology behind FCEBs is becoming increasingly viable as hydrogen production becomes more sustainable. With the advancement of green hydrogen production methods, which use renewable energy sources to create hydrogen, and because some electricity in Canada still comes from fossil fuels, the environmental benefits of fuel cell technology are further amplified. Mississauga’s investment in these buses is not only a commitment to cleaner air but also a boost for innovative technology in the transportation sector.

Benefits for Mississauga

The introduction of FCEBs is poised to offer numerous benefits to the residents of Mississauga. Firstly, the reduction in greenhouse gas emissions aligns with the city’s climate action goals and complements Canada’s EV goals at the national level. By investing in cleaner public transit options, Mississauga is taking significant steps to improve air quality and combat climate change.

Moreover, FCEBs are known for their efficiency and longer range compared to battery electric buses, such as the Metro Vancouver fleet now operating across the region, commonly used in Canadian cities. This means they can operate longer routes without the need for frequent recharging, making them ideal for busy transit systems. The use of hydrogen fuel can also result in shorter fueling times compared to electric charging, enhancing operational efficiency.

In addition to environmental and operational advantages, the introduction of these buses presents economic opportunities. The deployment of FCEBs can create jobs in the local economy, from maintenance to hydrogen production facilities, similar to how St. Albert’s electric buses supported local capabilities. This aligns with broader trends of sustainable economic development that prioritize green jobs.

Challenges Ahead

While the potential benefits of FCEBs are clear, the transition to this technology is not without its challenges. One of the main hurdles is the establishment of a robust hydrogen infrastructure. To support the operation of fuel cell buses, Mississauga will need to invest in hydrogen production, storage, and fueling stations, much as Edmonton’s first electric bus required dedicated charging infrastructure. Collaboration with regional and provincial partners will be crucial to develop this infrastructure effectively.

Additionally, public acceptance and awareness of hydrogen technology will be essential. As with any new technology, there may be skepticism regarding safety and efficiency. Educational campaigns will be necessary to inform the public about the advantages of FCEBs and how they contribute to a more sustainable future, and recent TTC’s battery-electric rollout offers a useful reference for outreach efforts.

Looking Forward

As Mississauga embarks on this innovative journey, the introduction of fuel cell electric buses signifies a forward-thinking approach to public transportation. The city’s commitment to sustainability not only enhances its transit system but also sets a precedent for other municipalities to follow.

In conclusion, the shift towards fuel cell electric buses in Mississauga exemplifies a significant leap toward greener public transport. With ongoing efforts to tackle climate change and improve urban air quality, Mississauga is positioning itself as a leader in sustainable transit solutions. The future looks promising for both the city and its residents as they embrace cleaner, more efficient transportation options. As this initiative unfolds, it will be closely watched by other cities looking to implement similar sustainable practices in their own transit systems.

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Nova Scotia Power Renewable Energy delivers 30% in 2018, led by wind power, hydroelectric and biomass, with coal and natural gas declining, as Muskrat Falls imports from Labrador target 40% renewables to cut emissions.

Key Points

It is the utility's 30% 2018 renewable mix and plan to reach 40% via Muskrat Falls while reducing carbon emissions.

✅ 18% wind, 9% hydro and tidal, 3% biomass in 2018

✅ Coal reliance fell from 76% in 2007 to 52% in 2018

✅ 58% carbon emissions cut from 2005 levels projected by 2030

Nova Scotia's private utility says it has hit a new milestone in its delivery of electricity from renewable resources, a trend highlighted by Summerside wind generation in nearby P.E.I.

Nova Scotia Power says 30 per cent of the electricity it produced in 2018 came from renewable sources such as wind power.

The utility says 18 per cent came from wind turbines, nine per cent from hydroelectric and tidal turbines and three per cent by burning biomass.

However, over half of the province's electrical generation still comes from the burning of coal or petroleum coke. Another 13 per cent come from burning natural gas and five per cent from imports, even as U.S. renewable generation hits record shares.

The utility says that since 2007, the province's reliance on coal-fired plants has dropped from 76 per cent of electricity generated to 52 per cent last year, as Prairie renewables growth accelerates nationally.

It says it expects to meet the province's legislated renewable target of 40 per cent in 2020, when it begins accessing hydroelectricity from the Muskrat Falls project in Labrador.

"We have made greener, cleaner energy a priority," utility president and CEO Karen Hutt said in a news release.

"As we continue to achieve new records in renewable electricity, we remain focused on ensuring electricity prices stay predictable and affordable for our customers, including solar customers across the province."

Nova Scotia Power also projects achieving a 58 per cent reduction in carbon emissions from 2005 levels by 2030.

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Muskrat Falls rate mitigation progresses as Newfoundland and Labrador and Ottawa align under the updated Atlantic Accord, targeting affordable electricity rates through federal involvement, PUB input, and potential financing solutions with Nalcor, Emera, and lenders.

Key Points

An initiative by NL and Ottawa to keep electricity rates affordable via federal support, PUB input, and financing options.

✅ Federal-provincial talks under the updated Atlantic Accord

✅ PUB process integrated for independent oversight

✅ Possible roles for Nalcor, Emera, and project lenders

At the announcement of an updated Atlantic Accord between the provincial and federal governments, Newfoundland and Larbrador Premier Dwight Ball gave notice federal Finance Minister Bill Morneau will be in St. John’s to talk about the cost of Muskrat Falls and how Labrador power flows through Quebec to market.

“We look forward to welcoming Minister Morneau and his team to advance discussions on federal financing and rate mitigation,” read a statement from the premier’s office Tuesday, in response to questions about that coming meeting and federal-provincial work on rate mitigation.

At the announcement, Ball specifically said the plan is to “finalize federal involvement for making sure electricity rates remain affordable,” such as shielding ratepayers from overruns through federal-provincial measures, with Ball and MP Seamus O’Regan trumpeting the provincial-federal relationship.

The provincial and federal governments are not the only two parties involved in provincial power rates and handling of Muskrat Falls, even as electricity users have started paying for the project across Newfoundland and Labrador, but The Telegram is told details of meetings on rate mitigation are not being released, down to the list of attendees.

The premier’s office was asked specifically about the involvement of Nalcor Energy, including a recent financial update during the pandemic, Emera, Goldman, TD or any others involved in project financing. The response was that the plan is not to indicate what is being explored and who might be involved, until there is something more concrete to speak about.

The government’s plan is to have something to feed into the ongoing work of the Public Utilities Board, to develop a more complete response for rate mitigation, including lump-sum credits on electricity bills and other tools, for the PUB’s final report, due in 2020, even as regulators in Nova Scotia weigh a 14% rate hike in a separate proceeding.

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