Bullfrog Power making a mark

By Toronto Star


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This is Energy Conservation Week and, once again, the green frog has leaped into the spotlight.

The cartoon amphibian is the logo of Bullfrog Power, the purveyor of "green" electricity that in less than three years has made itself synonymous with renewable power, despite being a tiny swimmer in Ontario's energy pond.

The company handles a minuscule fraction of the electricity generated in the province – just three ten-thousandths of a per cent, or 0.0003. Yet, it's de rigueur for those who wish to be on the side of the environmental angels to announce they're "bullfrogpowered." Among recent high-profile clients: the Nelly Furtado Earth Hour concert, three York Region civic buildings and condo builder TAS DesignBuild.

The company's curious growth strategy relies on getting consumers to pay a 50 per cent premium for electricity, without any promise of paybacks or government rebates. Their only reward is the warm, fuzzy feeling they've helped to reduce greenhouse-gas emissions.

"I do see it as remarkable. It never would have happened five or six years ago," Rob Wilson, a marketing professor at Ryerson University, said of the company's success.

Like the evening cacophony produced by puny spring peepers, Bullfrog, a privately held, for-profit company, makes a marketing noise that belies its 30-person size.

The Conservation Week news: It has joined EnWise Power Solutions, which provides energy-saving home retrofits, to offer customers discounts on each other's services.

From the start, Bullfrog has followed the lesson preached by U.S. marketing guru Seth Godin – in a field of black and white Holsteins a purple cow gets all the attention.

"We tried to create something unique," president Tom Heintzman said during an interview in the company's new offices at Spadina Ave. and Adelaide St., where the décor is smart, the office furniture second-hand and the space large enough for the company to grow.

"First and foremost was to create a product that's as environmental as we could get it, and attractive to consumers. Then, we tried to create a company that would be different from the standard utility."

How different? About 700 people showed up last October for the company's second annual Bullfrog Bash.

"When was the last time anyone went to a party for their utility?" Heintzman asked. Like Direct Energy and other providers, Bullfrog buys power in bulk and resells it, with the energy going into the grid, not directly to customers' homes. But unlike other resellers, all its electricity comes from wind-powered or small hydro generating stations.

Homeowners pay 8.9 cents per kilowatt-hour (the amount of energy needed to keep 10 100-watt bulbs burning 60 minutes). Most of us pay no more than 5.9 cents, the current standard price set by the Ontario Energy Board.

As of last month, those in apartments or condos, whose hydro bills are embedded in rent payments or maintenance fees, can have their consumption estimated, then shell out 3.5 cents per kilowatt-hour to Bullfrog – again, for nothing in return other than a fuzzy feeling.

The company charges the higher rate because it's selling expensive power. To encourage renewable sources of electricity, the province generally pays green energy providers 11 cents a kilowatt-hour. To compete, Bullfrog must match or exceed that price, Heintzman said. Bullfrog also invests in new renewable-energy projects.

"It's the nature of creating a green market," said Heintzman, a lawyer who spent three years with the advocacy group Sierra Legal Defence (now EcoJustice). "We're prepared to pay generators more than the market rate, which allows them to increase their return on capital and get into projects that otherwise might not be economic."

Despite the green frog's prominence, only about 6,000 residential customers and 600 businesses and government agencies have signed on. That lets the company support the generation of less than 10 megawatts of electricity – not even a flicker in the province's total capacity of about 31,000.

"Our revenues aren't yet enough to sustain the business," said Heintzman.

It's not for a lack of creating buzz, achieved partly by mimicking non-profit organizations. If they choose, its customers are listed on its website as Founders Club members.

"It's not only to publicly recognize them, but it's also important to promote the sense of collective action," Heintzman said.

The club, "is part of the branding," said Peter Clarke of environmental consultants ICF International. "It's helping you to feel good instead of just getting a bill. You're not just buying a commodity, you're part of something."

But doubters wonder if Bullfrog will keep attracting customers if the economy sinks. After all, Clarke noted that Bullfrog isn't the cheapest way to cut greenhouse gas emissions. Its customers spend about $127 for each tonne of reductions. That's nearly four times the current price for carbon offsets on the international market – money that is invested in reforestation, efficient stoves, solar power or other projects in developing countries.

Some customers do all they can to cut consumption before buying from Bullfrog. But, like offsets, for others it can amount to a guilt payment: Use as much electricity as ever but keep a clean conscience because your supply is green.

Heintzman says it's all to the good: The more customers he has, the more Ontario moves away from conventional electricity.

He remains convinced people will keep buying what Bullfrog is selling.

"We're just scratching the surface, moving from start-up to adolescence. There's a lot of growth to do."

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Feds "changing goalposts" with 2035 net-zero electricity grid target: Sask. premier

Canada Clean Electricity Regulations outline a 2035 net-zero grid target, driving decarbonization via wind, solar, hydro, SMRs, carbon capture, and efficiency, balancing reliability, affordability, and federal-provincial collaboration while phasing out coal and limiting fossil-fuel generation.

 

Key Points

Federal rules to cap CO2 from power plants and deliver a reliable, affordable net-zero grid by 2035.

✅ Applies to fossil-fired units; standards effective by Jan 1, 2035.

✅ Promotes wind, solar, hydro, SMRs, carbon capture, and efficiency.

✅ Balances reliability, affordability, and emissions cuts; ongoing consultation.

 

Saskatchewan’s premier said the federal government is “changing goalposts” with its proposed target for a net-zero electricity grid.

“We were looking at a net-zero plan in Saskatchewan and across Canada by the year 2050. That’s now been bumped to 2035. Well there are provinces that quite frankly aren’t going to achieve those types of targets by 2035,” Premier Scott Moe said Wednesday.

Ottawa proposed the Clean Electricity Regulations – formerly the Clean Electricity Standard – as part of its target for Canada to transition to net-zero emissions by 2050.

The regulations would help the country progress towards an updated proposed goal of a net-zero electricity grid by 2035.

“They’re un-consulted, notional targets that are put forward by the federal government without working with industries, provinces or anyone that’s generating electricity,” Moe said.

The Government of Canada was seeking feedback from stakeholders on the plan’s regulatory framework document earlier this year, up until August 2022.

“The clean electricity standard is something that’s still being consulted on and we certainly heard the views of Saskatchewan – not just Saskatchewan, many other provinces – and I think that’s something that’s being reflected on,” Jonathan Wilkinson, Canada’s minister of natural resources, said during an event near Regina Wednesday.

“We also recognize that the federal government has a role to play in helping provinces to make the kinds of changes that would need to be made in order to actually achieve a clean grid,” Wilkinson added.

The information received during the consultation will help inform the development of the proposed regulations, which are expected to be released before the end of the year, according to the federal government.


NET-ZERO ELECTRICITY GRID
The federal government said its Clean Electricity Regulations (CER) is part of a suite of measures, as the country moves towards a broad “decarbonization” of the economy, with Alberta's clean electricity path illustrating provincial approaches as well.

Net-zero emissions would mean Canada’s economy would either emit no greenhouse gas emissions or offset its emissions.

The plan encourages energy efficiency, abatement and non-emitting generation technologies such as carbon capture and storage and electricity generation options such as solar, wind, geothermal, small modular nuclear reactors (SMRs) and hydro, among others.

The government suggests consumer costs could be lowered by using some of these energy efficiency techniques, alongside demand management and a shift to lower-cost wind and solar power, echoing initiatives like the SaskPower 10% rebate aimed at affordability.

The CER focuses on three principles, each tied to affordability debates like the SaskPower rate hike in Saskatchewan:

 Maximize greenhouse gas reductions to achieve the 2035 target
 Ensure a reliable electrical grid to support Canadians and the economy
 Maintain electrical affordability

“Achieving a net-zero electricity supply is key to reaching Canada’s climate targets in two ways,” the government said in its proposed regulations.

“First, it will reduce [greenhouse gas] emissions from the production of electricity. Second, using clean electricity instead of fossil fuels in vehicles, heating and industry will reduce emissions from those sectors too.

The regulations would regulate carbon dioxide emissions from electricity generating units that combust any amount of fossil fuel, have a capacity above a small megawatt threshold and sell electricity onto a regulated electricity system.

New rules would also be implemented for the development of new electricity generation units firing fossil fuels in or after 2025 and existing units. All units would be subject to emission standards by Jan. 1, 2035, at the latest.

The federal government launched consultations on the proposed regulations in March 2022.

Canada also has a 2030 emissions reduction plan that works towards meeting its Paris Agreement target to reduce emissions by 40-45 per cent from 2005 levels by 2030. This plan includes regulations to phase out coal-fired electricity by 2030.


COLLABORATION
The province recently introduced the Saskatchewan First Act, in an attempt to confirm its own jurisdiction and sovereignty when it comes to natural resources.

The act would amend Saskatchewan’s constitution to exert exclusive legislative jurisdiction under the Constitution of Canada.

The province is seeking jurisdiction over the exploration of non-renewable resources, the development, conservation and management of non-renewable natural and forestry resources, and the operation of sites and facilities for the generation and production of electrical energy.

While the federal government and Saskatchewan have come head-to-head publicly over several policy concerns in the past year, both sides remain open to collaborating on issues surrounding natural resources.

“We do have provincial jurisdiction in the development of these natural resources. We’d like to work collaboratively with the federal government on developing some of the most sustainable potash, uranium, agri-food products in the world,” Moe said.

Minister Wilkinson noted that while both the federal and provincial governments aim to respect each other’s jurisdiction, there is often some overlap, particularly in the case of environmental and economic policies, with Alberta's electricity sector changes underscoring those tensions as well.

“My view is we should endeavour to try to figure out ways that we can work together, and to ensure that we’re actually making progress for Saskatchewanians and for Canadians,” Wilkinson said.

“I think that Canadians expect us to try to figure out ways to work together, and where there are some disputes that can’t get resolved, ultimately the Supreme Court will decide on the issue of jurisdiction as they did in the case on the price on pollution.”

Moe said Saskatchewan is always open to working with the federal government, but not at the expense of its “provincial, constitutional autonomy.”

 

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Philippines Ranks Highest in Coal-Generated Power Dependency

Philippines coal dependency underscores energy transition challenges, climate change risks, and air pollution, as rising electricity demand, fossil fuels, and emissions shape policy shifts toward renewable energy, grid reliability, and sustainable development.

 

Key Points

It is rising reliance on coal for power, driven by demand and cost, with climate, air pollution, and policy risks.

✅ Driven by rising demand, affordability, and grid reliability.

✅ Worsens emissions, air pollution, and public health burdens.

✅ Policy shifts aim at renewable energy, efficiency, and standards.

 

In a striking development, the Philippines has surpassed China and Indonesia to become the nation most dependent on coal-generated power in recent years. This shift highlights significant implications for the country's energy strategy, environmental policies, and its commitment to sustainable development, and comes as global power demand continues to surge worldwide.

Rising Dependency on Coal

The Philippines' increasing reliance on coal-generated power is driven by several factors, including rapid economic growth, rising electricity demand, and regional uncertainties in China's electricity sector that influence fuel markets, and the perceived affordability and reliability of coal as an energy source. Coal has historically been a key component of the Philippines' energy mix, providing a stable supply of electricity to support industrialization and urbanization efforts.

Environmental and Health Impacts

Despite its economic benefits, coal-generated power comes with significant environmental and health costs, especially as soaring electricity and coal use amplifies exposure to pollution. Coal combustion releases greenhouse gases such as carbon dioxide, contributing to global warming and climate change. Additionally, coal-fired power plants emit pollutants such as sulfur dioxide, nitrogen oxides, and particulate matter, which pose health risks to nearby communities and degrade air quality.

Policy and Regulatory Landscape

The Philippines' energy policies have evolved to address the challenges posed by coal dependency while promoting sustainable alternatives. The government has introduced initiatives to encourage renewable energy development, improve energy efficiency, and, alongside stricter emissions standards on coal-fired power plants, is evaluating nuclear power for inclusion in the energy mix to meet future demand. However, balancing economic growth with environmental protection remains a complex and ongoing challenge.

International and Domestic Pressures

Internationally, there is growing pressure on countries to reduce reliance on fossil fuels and transition towards cleaner energy sources as part of global climate commitments under the Paris Agreement, illustrated by the United Kingdom's plan to end coal power within its grid. The Philippines' status as the most coal-dependent nation underscores the urgency for policymakers to accelerate the shift towards renewable energy and reduce carbon emissions to mitigate climate impacts.

Challenges and Opportunities

Transitioning away from coal-generated power presents both challenges and opportunities for the Philippines. Challenges include overcoming entrenched interests in the coal industry, addressing energy security concerns, and navigating the economic implications of energy transition, particularly as clean energy investment in developing nations has recently declined, adding financial headwinds. However, embracing renewable energy offers opportunities to diversify the energy mix, reduce dependence on imported fuels, create green jobs, and improve energy access in remote areas.

Community and Stakeholder Engagement

Engaging communities and stakeholders is crucial in shaping the Philippines' energy transition strategy. Local residents, environmental advocates, industry leaders, and policymakers play essential roles in fostering dialogue, raising awareness about the benefits of renewable energy, and advocating for policies that promote sustainable development and protect public health.

Future Outlook

The Philippines' path towards reducing coal dependency and advancing renewable energy is critical to achieving long-term sustainability and resilience against climate change impacts. By investing in renewable energy infrastructure, enhancing energy efficiency measures, and fostering innovation in clean technologies, as renewables poised to eclipse coal indicate broader momentum, the country can mitigate environmental risks, improve energy security, and contribute to global efforts to combat climate change.

Conclusion

As the Philippines surpasses China and Indonesia in coal-generated power dependency, the nation faces pivotal decisions regarding its energy future. Balancing economic growth with environmental stewardship requires strategic investments in renewable energy, robust policy frameworks, and proactive engagement with stakeholders to achieve a sustainable and resilient energy system. By prioritizing clean energy solutions, the Philippines can pave the way towards a greener and more sustainable future for generations to come.

 

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COVID-19 pandemic zaps electricity usage in Ontario as people stay home

Ontario Electricity Demand 2020 shows a rare decline amid COVID-19, with higher residential peak load, lower commercial usage, hot-weather air conditioning, nuclear baseload constraints, and smart meter data shaping grid operations and forecasting.

 

Key Points

It refers to 2020 power use in Ontario: overall demand fell, while residential peaks rose and commercial loads dropped.

✅ Peak load shifted to homes; commercial usage declined.

✅ Hot summers raised peaks; overall annual demand still fell.

✅ Smart meters aid forecasting; grid must balance nuclear baseload.

 

Demand for electricity in Ontario last year fell to levels rarely seen in decades amid shifts in usage patterns caused by pandemic measures, with Ottawa’s electricity consumption dropping notably, new data show.

The decline came despite a hot summer that had people rushing to crank up the air conditioning at home, the province’s power management agency said, even as the government offered electricity relief to families and small businesses.

“We do have this very interesting shift in who’s using the energy,” said Chuck Farmer, senior director of power system planning with the Independent Electricity System Operator.

“Residential users are using more electricity at home than we thought they would and the commercial consumers are using less.”

The onset of the pandemic last March prompted stay-home orders, businesses to close, and a shuttering of live sports, entertainment and dining out. Social distancing and ongoing restrictions, even as the first wave ebbed and some measures eased, nevertheless persisted and kept many people home as summer took hold and morphed into winter, while the province prepared to extend disconnect moratoriums for residential customers.

System operator data show peak electricity demand rose during a hot summer spell to 24,446 megawatts _ the highest since 2013. Overall, however, Ontario electricity demand last year was the second lowest since 1988, the operator said.

In all, Ontario used 132.2 terawatt-hours of power in 2020, a decline of 2.9 per cent from 2019.

With more people at home during the lockdown, winter residential peak demand has climbed 13 per cent above pre-pandemic levels, even as Hydro One made no cut in peak rates for self-isolating customers, while summer peak usage was up 19 per cent.

“The peaks are getting higher than we would normally expect them to be and this was caused by residential customers _ they’re home when you wouldn’t expect them to be home,” Farmer said.

Matching supply and demand _ a key task of the system operator _ is critical to meeting peak usage and ensuring a stable grid, and the operator has contingency plans with some key staff locked down at work sites to maintain operations during COVID-19, because electricity cannot be stored easily. It is also difficult to quickly raise or lower the output from nuclear-powered generators, which account for the bulk of electricity in the province, as demand fluctuates.

READ MORE: Ontario government extends off-peak electricity rates to Feb. 22

Life patterns have long impacted overall usage. For example, demand used to typically climb around 10 p.m. each night as people tuned into national television newscasts. Livestreaming has flattened that bump, while more energy-efficient lighting led to a drop in provincial demand over the holiday season.

The pandemic has now prompted further intra-day shifts in usage. Fewer people are getting up in the morning and powering up at home before powering down and rushing off to work or school. The summer saw more use of air conditioners earlier than normal after-work patterns.

Weather has always been a key driver of demand for power, accounting for example for the record 27,005 megawatts of usage set on a brutally hot Aug. 1, 2006. Similarly, a mild winter and summer led to an overall power usage drop in 2017.

Still, the profound social changes prompted by the COVID-19 pandemic _ and whether some will be permanent _ have complicated demand forecasting.

“Work patterns used to be much more predictable,” the agency said. “The pandemic has now added another element of variability for electricity demand forecasting.”

Some employees sent home to work have returned to their offices and other workplaces, and many others are likely do so once the pandemic recedes. However, some larger companies have indicated that working from home will be long term.

“Companies like Facebook and Shopify have already stated their intention to make work from home a more permanent arrangement,” the operator said. “This is something our near-term forecasters would take into account when preparing for daily operation of the grid.”

Aggregated data from better smart meters, which show power usage throughout the day, is one method of improving forecasting accuracy, the operator said.

 

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Maritime Link almost a reality, as first power cable reaches Nova Scotia

Maritime Link Subsea Cable enables HVDC grid interconnection across the Cabot Strait, linking Nova Scotia with Newfoundland and Labrador to import Muskrat Falls hydroelectric power and expand renewable energy integration and reliability.

 

Key Points

A 170-km HVDC subsea link connecting Nova Scotia and Newfoundland and Labrador for Muskrat Falls power and renewables

✅ 170-km HVDC subsea route across Cabot Strait

✅ Connects Nova Scotia and Newfoundland and Labrador grids

✅ Enables Muskrat Falls hydro and renewable energy trade

 

The longest sub-sea electricity cable in North America now connects Nova Scotia and Newfoundland and Labrador, according to the company behind the $1.7-billion Maritime Link project.  

The first of the project's two high-voltage power transmission cables was anchored at Point Aconi, N.S., on Sunday. 

The 170-kilometre long cable across the Cabot Strait will connect the power grids in the two provinces. The link will allow power to flow between the two provinces, as demonstrated by its first electricity transfer milestone, and bring to Nova Scotia electricity generated by the massive Muskrat Falls hydroelectric project in Labrador. 

Ultimately, the Maritime Link will help Nova Scotia reach the renewable energy goals set out by the federal government, said Rick Janega, the president and CEO of Emera Newfoundland and Labrador, whose subsidiary owns the Maritime Link.

"If not for the Maritime Link then really the province would not have the ability to meet those requirements because we're pretty much tapped out of all the hydro in province and all the wind generation without creating new interconnections like the Maritime Link," said Janega. 

Not everyone wanted the link 

Fishermen in Cape Breton had objected to the Maritime Link. They were concerned about how the undersea cable might affect fish in the area. 

The laying of the cable and other construction closed a three-kilometre long and 600-metre wide swath of ocean bottom to fishermen for the entire 2017 lobster season.  

But the company came to an agreement to compensate a group of 60 Cape Breton lobster and crab fishermen affected by the project this season. The terms of the compensation deal were not released. 

 

Long cable, big job

The transmission cable runs northwest of the Marine Atlantic ferry route between North Sydney, N.S., and Port aux Basques, N.L. 

Installation of the second cable is set to begin in June, a major step comparable to BC Hydro's Site C transmission milestone achieved recently. The entire link should be completed by late 2017 and should go into full service by January 2018.

"We're quite confident as soon as the Maritime Link is in service there will be energy transactions between Nova Scotia Power and Newfoundland Hydro. Both utilities have already identified opportunities to save money and exchange energy between the two provinces," said Janega.

That's two years before power is expected to flow from the Muskrat Falls hydro project. The Labrador-based power generating facility has been hampered by delays.

Those kinds of transmission project delays are expected for such a large project, said Janega, and won't stop the Maritime Link from being used. 

"With the Maritime Link going in service this year providing Nova Scotia the opportunity that it needs to be able to reach carbon reductions and to adapt to climate change and to increase renewable energy content and we're very pleased to be at this state today," said Janega.

 

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How Energy Use Has Evolved Throughout U.S. History

U.S. Energy Transition traces the shift from coal and oil to natural gas, nuclear power, and renewables like wind and solar, driven by efficiency, grid modernization, climate goals, and economic innovation.

 

Key Points

The U.S. Energy Transition is the shift from fossil fuels to cleaner power, driven by tech, policy, and markets.

✅ Shift from coal and oil to gas, nuclear, wind, and solar

✅ Enabled by grid modernization, storage, and efficiency

✅ Aims to cut emissions while ensuring reliability and affordability

 

The evolution of energy use in the United States is a dynamic narrative that reflects technological advancements, economic shifts, environmental awareness, and societal changes over time. From the nation's early reliance on wood and coal to the modern era dominated by oil, natural gas, and renewable sources, the story of energy consumption in the U.S. is a testament to innovation and adaptation.

Early Energy Sources: Wood and Coal

In the early days of U.S. history, energy needs were primarily met through renewable resources such as wood for heating and cooking. As industrialization took hold in the 19th century, coal emerged as a dominant energy source, fueling steam engines and powering factories, railways, and urban growth. The widespread availability of coal spurred economic development and shaped the nation's infrastructure.

The Rise of Petroleum and Natural Gas

The discovery and commercialization of petroleum in the late 19th century transformed the energy landscape once again. Oil quickly became a cornerstone of the U.S. economy, powering transportation, industry, and residential heating, and informing debates about U.S. energy security in policy circles. Concurrently, natural gas emerged as a significant energy source, particularly for heating and electricity generation, as pipelines expanded across the country.

Electricity Revolution

The 20th century witnessed a revolution in electricity generation and consumption, and understanding where electricity comes from helps contextualize how systems evolved. The development of hydroelectric power, spurred by projects like the Hoover Dam and Tennessee Valley Authority, provided clean and renewable energy to millions of Americans. The widespread electrification of rural areas and the proliferation of appliances in homes and businesses transformed daily life and spurred economic growth.

Nuclear Power and Energy Diversification

In the mid-20th century, nuclear power emerged as a promising alternative to fossil fuels, promising abundant energy with minimal greenhouse gas emissions. Despite concerns about safety and waste disposal, nuclear power plants became a significant part of the U.S. energy mix, providing a stable base load of electricity, even as the aging U.S. power grid complicates integration of variable renewables.

Renewable Energy Revolution

In recent decades, the U.S. has seen a growing emphasis on renewable energy sources such as wind, solar, and geothermal power, yet market shocks and high fuel prices alone have not guaranteed a rapid green revolution, prompting broader policy and investment responses. Advances in technology, declining costs, and environmental concerns have driven investments in clean energy infrastructure and policies promoting renewable energy adoption. States like California and Texas lead the nation in wind and solar energy production, demonstrating the feasibility and benefits of transitioning to sustainable energy sources.

Energy Efficiency and Conservation

Alongside shifts in energy sources, improvements in energy efficiency and conservation have played a crucial role in reducing per capita energy consumption and greenhouse gas emissions. Energy-efficient appliances, building codes, and transportation innovations have helped mitigate the environmental impact of energy use while reducing costs for consumers and businesses, and weather and economic factors also influence demand; for example, U.S. power demand fell in 2023 on milder weather, underscoring the interplay between efficiency and usage.

Challenges and Opportunities

Looking ahead, the U.S. faces both challenges and opportunities in its energy future, as recent energy crisis effects ripple across electricity, gas, and EVs alike. Addressing climate change requires further investments in renewable energy, grid modernization, and energy storage technologies. Balancing energy security, affordability, and environmental sustainability remains a complex task that requires collaboration between government, industry, and society.

Conclusion

The evolution of energy use throughout U.S. history reflects a continuous quest for innovation, economic growth, and environmental stewardship. From wood and coal to nuclear power and renewables, each era has brought new challenges and opportunities in meeting the nation's energy needs. As the U.S. transitions towards a cleaner and more sustainable energy future, leveraging technological advancements and embracing policy solutions, amid debates over U.S. energy dominance, will be essential in shaping the next chapter of America's energy story.

 

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Crossrail will generate electricity using the wind created by trains

Urban Piezoelectric Energy Textiles capture wind-driven motion on tunnels, bridges, and facades, enabling renewable microgeneration for smart cities with decentralized power, resilient infrastructure, and flexible lamellae sheets that harvest airflow vibrations.

 

Key Points

Flexible piezoelectric sheets that convert urban wind and vibration into electricity on tunnels, bridges, and facades.

✅ Installed on London Crossrail to test airflow energy capture

✅ Flexible lamellae panels retrofit tunnels, bridges, facades

✅ Supports decentralized, resilient urban microgrids

 

Charlotte Slingsby and her startup Moya Power are researching piezo-electric textiles that gain energy from movement, similar to advances like a carbon nanotube energy harvester being explored by materials researchers. It seems logical that Slingsby originally came from a city with a reputation for being windy: “In Cape Town, wind is an energy source that you cannot ignore,” says the 27-year-old, who now lives in London.

Thanks to her home city, she also knows about power failures. That’s why she came up with the idea of not only harnessing wind as an alternative energy source by setting up wind farms in the countryside or at sea, but also for capturing it in cities using existing infrastructure.

 

The problem

The United Nations estimates that by 2050, two thirds of the world’s population will live in cities. As a result, the demand for energy in urban areas will increase dramatically, spurring interest in nighttime renewable technology that can operate when solar and wind are variable. Can the old infrastructure grow fast enough to meet demand? How might we decentralise power generation, moving it closer to the residents who need it?

For a pilot project, she has already installed grids of lamellae-covered plastic sheets in tunnels on London Crossrail routes; the draft in the tube causes the protrusions to flutter, which then generates electricity.

“If we all live in cities that need electricity, we need to look for new, creative ways to generate it, including nighttime solar cells that harvest radiative cooling,” says Slingsby, who studied design and engineering at Imperial College and the Royal College of Art. “I wanted to create something that works in different situations and that can be flexibly adapted, whether you live in an urban hut or a high-rise.”

The yield is low compared to traditional wind power plants and is not able to power whole cities, but Slingsby sees Moya Power as just a single element in a mixture of urban energy sources, alongside approaches like gravity power that aid grid decarbonization.

In the future, Slingsby’s invention could hang on skyscrapers, in tunnels or on bridges – capturing power in the windiest parts of the city, alongside emerging air-powered generators that draw energy from humidity. The grey concrete of tunnels and urban railway cuttings could become our cities’ most visually appealing surfaces...

 

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