Ottawa to release promised EV sales regulations

British Columbia Green Infrastructure Funding expands CleanBC Communities Fund projects, from EV charging stations to sewage heat recovery, delivering low-carbon heat in Vancouver and supporting Indigenous communities and COVID-19 recovery through the Green Infrastructure Stream.

Key Points

A joint federal-provincial program backing CleanBC to fund EV chargers, sewage heat recovery, and low-carbon heat.

✅ Funds EV charging across Vancouver Island and northern B.C.

✅ Expands sewage heat recovery via Vancouver's NEU

✅ Joint federal, provincial, local, and Indigenous partners

The governments of Canada and British Columbia are investing in infrastructure to get projects under way that meet people's needs, address the effects of the COVID-19 pandemic, and help communities restart their economies.  

Strategic investments in green infrastructure are key to creating clean healthy communities, making life more affordable, and building a clean electricity future for Canada.

Today, the Honourable Jonathan Wilkinson, Minister of Environment and Climate Change and Member of Parliament for North Vancouver, on behalf of the Honourable Catherine McKenna, Minister of Infrastructure and Communities, and the Honourable George Heyman, B.C. Minister of Environment and Climate Change Strategy, announced funding for 11 projects, alongside initiatives like the province's hydrogen project, to help B.C. communities save energy and reduce pollution.  

In Vancouver, the Sewage Heat Recovery Expansion Project will increase the capacity of the Neighbourhood Energy Utility (NEU) to provide buildings in the False Creek area with low-carbon heat and hot water. The NEU recycles waste heat and uses a mix of renewable and conventional natural gas to reduce harmful emissions.

Funding is also going towards expanding the network of Level-2 electric vehicle (EV) charging stations across the province. More than 80 new stations will be installed in communities across mid-Vancouver Island, as well as northern and central B.C., making clean transportation options, supported by incentives for zero-emission vehicles, more viable for more people.

These, along with the other projects announced today, will create jobs and strengthen local economies now while promoting sustainable growth and residents' long-term health and well-being.

The Government of Canada is investing more than $28.5 million in these projects through the Green Infrastructure Stream (GIS) of the Investing in Canada plan, and local and Indigenous communities are contributing more than $13 million. The Government of British Columbia is contributing nearly $18 million through the CleanBC Communities Fund, part of the federal Investing in Canada plan's Green Infrastructure Stream, which also supports rebates for home and workplace charging initiatives.

Quotes

"Expanding electric vehicle charging stations across Vancouver Island will make clean transportation more viable for more people. Encouraging green energy solutions like this is essential to building strong resilient communities. Canada's Infrastructure plan invests in thousands of projects, creates jobs across the country, and builds stronger communities."

The Honourable Jonathan Wilkinson, Minister of Environment and Climate Change and Member of Parliament for North Vancouver, on behalf of the Honourable Catherine McKenna, Minister of Infrastructure and Communities

"This investment through the Green Infrastructure Stream is a great example of how federal partnerships with all levels of government can ensure a sustainable future for generations. Amidst COVID-19, we can rebuild better with a green recovery."

Hedy Fry, Member of Parliament for Vancouver Centre

"People deserve access to clean air, clean energy and clean economic opportunities and by investing in new clean infrastructure projects, we will reduce pollution, build better buildings, improve transportation options with EV charger rebates and make life more affordable for people. By working together with the City of Vancouver and other B.C. communities, along with the federal government, we're helping build back a stronger, better B.C. for everyone following the impacts of COVID-19 through our CleanBC plan."

The Honourable George Heyman, Minister of Environment and Climate Change Strategy Government

"This is an important investment when it comes to addressing the climate emergency our city is facing. Nearly 60 per cent of carbon pollution created in Vancouver comes from burning natural gas to heat our buildings and provide hot water. This investment from our provincial and federal partners will help us greatly expand the Neighbourhood Energy Utility to reduce our carbon footprint even further."

His Worship, Kennedy Stewart, Mayor of Vancouver

Quick facts

Through the Investing in Canada Plan, the Government of Canada is investing more than $180 billion over 12 years in public transit projects, green infrastructure, social infrastructure, trade and transportation routes, and Canada's rural and northern communities.
The Government of Canada has invested $4.2 billion in 525 infrastructure projects across British Columbia under the Investing in Canada plan.
To support Canadians and communities during the COVID-19 pandemic, a new stream has been added to the over $33-billion Investing in Canada Infrastructure Program to help fund pandemic-resilient infrastructure. Existing program streams have also been adapted to include more eligible project categories.
The new Canada Healthy Communities Initiative will provide up to $31 million in existing federal funding to support communities as they deploy innovative ways to adapt spaces and services to respond to immediate and ongoing needs arising from COVID-19 over the next two years.
The 11 projects are part of the first intake of the CleanBC Communities Fund, which committed more than $63 million in joint federal-provincial funding. Additional projects from the first intake will be announced soon.
The second intake for the CleanBC Communities Fund is now open for applications from local governments, Indigenous groups, not-for-profits and for-profit organizations in B.C.

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Canada’s clean energy sector is expanding as Indigenous communities lead electricity transmission projects, drive sustainable growth, and strengthen energy independence through renewable power, community ownership, and grid connections across remote and regional areas of Canada.

What is Canada’s Clean Energy Sector?

Canada’s clean energy sector encompasses industries and initiatives that generate, transmit, and manage low-carbon electricity to meet the country's national climate goals. It emphasizes Indigenous participation, renewable innovation, and equitable economic growth.

✅ Expands renewable electricity generation and transmission

✅ Builds Indigenous-led ownership and partnerships

✅ Reduces emissions through sustainable energy transition

Canada’s clean energy sector is entering a pivotal era of transformation, with Indigenous communities emerging as leading partners in expanding electricity transmission and renewable infrastructure, including grid modernization projects that are underway nationwide. These communities are not only driving projects that connect remote regions to the grid but also redefining what energy leadership and equity look like in Canada.

At a recent webinar co-hosted by the Canadian Climate Institute and the Indigenous Power Coalition, panellists discussed the growing wave of Indigenous-led electricity transmission projects and the policies needed to strengthen Indigenous participation. The event, moderated by Frank Busch, featured Margaret Kenequanash, CEO of Wataynikaneyap Power; Kahsennenhawe Sky-Deer, Grand Chief of the Mohawk Council of Kahnawà:ke; and Blaise Fontaine, Co-Founder of ProACTIVE Planning Inc. and Indigenous Power Coalition.

The discussion comes at a crucial moment for Canada’s clean energy transition. As the country races to meet its climate commitments and zero-emissions electricity by 2035 targets, demand for clean power is rising rapidly. Historically, energy development in Canada occurred on Indigenous lands without consent or fair participation, but today, Indigenous communities collectively represent the largest clean energy asset owners outside Crown and private utilities.

“There is a genuine appetite for Indigenous communities to not just own transmission projects but to also lead,” said Fontaine. He noted that Indigenous communities are increasingly setting the terms of engagement, selecting partners, and shaping projects in line with their cultural and environmental values.

One of the strongest examples of this transformation is the Wataynikaneyap (Watay) Power Project in northern Ontario, a 1,800-kilometre transmission line connecting 17 remote First Nations communities to the provincial grid. “Communities must fully understand what they are getting into, since it is their homelands that will be impacted,” said Kenequanash. She emphasized that the project’s success came from five years of inter-community meetings to agree on shared principles before any external engagement.

The panel also highlighted the Hertel–New York Interconnection Line, co-owned by Hydro-Québec and the Mohawk Council of Kahnawà:ke, as another milestone in Indigenous energy leadership. Sky-Deer noted that the project’s co-ownership model required Quebec’s National Assembly to pass Bill 13, a first-of-its-kind legal framework. “That was a breakthrough,” she said, “but it also shows that true partnership still depends on one-off exceptions rather than standard policy.”

Panellists agreed that Canada’s regulatory systems have not kept pace with Indigenous leadership. Fontaine called on governments to “think outside the box to avoid staying stuck in the status quo,” emphasizing the need for enabling policies that align with an electric, connected and clean vision for Canada while making Indigenous-led ownership the norm rather than the exception.

Financial readiness is another key factor driving Indigenous participation. Communities are now accessing capital through partnerships with financial institutions and government loan programs, and growing evidence that a 2035 zero-emissions grid is practical and profitable is strengthening investor confidence. The collaboration between the Mohawk Council of Kahnawà:ke and the Caisse de dépôt et placement du Québec exemplifies tailored financing and long-term investment that supports community ownership and sustainable growth.

True equity, however, goes beyond financial participation. “It’s not just about having a percentage stake,” Fontaine explained. “True equity means meaningful decision-making power and control.” Indigenous leaders are insisting on co-governance structures that align with their worldviews, prioritizing environmental protection, cultural respect, and intergenerational stewardship.

The benefits of this approach extend far beyond project economics. Communities involved in ownership experience tangible local benefits, including employment and training opportunities, as well as new investments in education and culture. Hydro-Québec’s $10 million contribution to the Kahnawà:ke Cultural Arts Center is one example of how partnerships can support cultural renewal and community development.

As Canada looks to build east–west electricity interties and expand renewable energy generation, including solar where Canada has lagged in deployment nationwide, Indigenous leadership is becoming increasingly central to national energy policy. Fontaine noted that this shift offers “even greater opportunities for Indigenous-led transmission as Canada connects its provinces rather than just exporting power south.”

In particular, Alberta's energy profile highlights both rapid growth in renewables and ongoing fossil fuel strength, informing intertie planning and market design.

On the National Truth and Reconciliation Day, panellists urged reflection on both the barriers that remain and the opportunities ahead. Indigenous leadership in Canada’s clean energy sector is proving that reconciliation can take tangible form, through ownership, partnership, and shared prosperity.

This transformation represents more than an energy transition; it’s a rebalancing of power, respect, and responsibility, carried out “in a good way,” as the panellists emphasized, and essential to building a clean, inclusive energy future for all Canadians while strengthening the global electricity market position of the country.

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Electric Vehicle Price Parity 2027 signals cheaper EV manufacturing as battery costs plunge, widening model lineups, and tighter EU emissions rules; UBS and BloombergNEF foresee parity, with TCO advantages over ICE amid growing fast-charging networks.

Key Points

EV cost parity in 2027 when manufacturing undercuts ICE, led by cheaper batteries, wider lineups, and emissions policy.

✅ Battery costs drop 58% next decade, after 88% fall

✅ Manufacturing parity across segments from 2027

✅ TCO favors EVs; charging networks expand globally

A Bloomberg/NEF report commissioned by Transport & Environment forecasts 2027 as the year when electric vehicles will start to become cheaper to manufacture than their internal combustion equivalents across all segments, aligning with analyses that the EV age is arriving ahead of schedule for consumers and manufacturers alike, mainly due to a sharp drop in battery prices and the appearance of new models by more manufacturers.

Batteries, which have fallen in price by 88% over the past decade and are expected to plunge by a further 58% over the next 10 years, make up between one-quarter and two-fifths of the total price of a vehicle. The average pre-tax price of a mid-range electric vehicle is around €33,300, and higher upfront prices concern many UK buyers compared to €18,600 for its diesel or gasoline equivalent. In 2026, both are expected to cost around €19,000, while in 2030, the same electric car will cost €16,300 before tax, while its internal combustion equivalent will cost €19,900, and that’s without factoring in government incentives.

Other reports, such as a recent one by UBS, put the date of parity a few years earlier, by 2024, after which they say there will be little reason left to buy a non-electric vehicle, as the market has expanded from near zero to 2 million in just five years.

In Europe, carmakers will become a particular stakeholder in this transition due to heavy fines for exceeding emissions limits calculated on the basis of the total number of vehicles sold. Increasing the percentage of electric vehicles in the annual sales portfolio is seen by the industry as the only way to avoid these fines. In addition to brands such as Bentley or Jaguar Land Rover, which have announced the total abandonment of internal combustion engine technology by 2025, or Volvo, which has set 2030 as the target date, other companies such as Ford, which is postponing this date in its home market, also set 2030 for the European market, which clearly demonstrates the suitability of this type of policy.

Nevertheless internal combustion vehicles will continue to travel on the roads or will be resold in developing countries. In addition to the price factor, which is even more accentuated when estimates are carried out in terms of total cost of ownership calculations due to the lower cost of electric recharging versus fuel and lower maintenance requirements, other factors such as the availability of fast charging networks must be taken into account.

While price parity is approaching, it is worth thinking about the factors that are causing car sales, which are still behind gasoline models in share, to suffer: the chip crisis, which is strongly affecting the automotive industry and will most likely extend until 2022, is creating production problems and the elimination of numerous advanced electronic options in many models, which reduces the incentive to purchase a vehicle at the present time. These types of reasons could lead some consumers to postpone purchasing a vehicle precisely when we may be talking about the final years for internal combustion technology, which would increase the likelihood that, later on and as the price gap closes, they would opt for an electric vehicle.

Finally, in the United States, the ambitious infrastructure plan put in place by the Biden administration also promises to accelerate the transition to electric vehicles by addressing key barriers to mainstream adoption such as charging access, which in turn is fueling the interest of automotive companies to have more electric vehicles in their range. In Europe, meanwhile, more Chinese brands offering electric vehicles are beginning to enter the most advanced markets, such as Norway and the Netherlands, with plans to expand to the rest of the continent with very competitive offers in terms of price.

One way or another, the future of the automotive industry is electric, and the transition will take place during the remainder of this decade. You might want to think about it if you are weighing whether it’s time to buy an electric car this year.

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Food Waste to Green Hydrogen uses biological production to create clean energy, enabling waste-to-energy, decarbonization, and renewable hydrogen for electricity, industrial processes, and transport fuels, developed at Purdue University Northwest with Purdue Research Foundation licensing.

Key Points

A biological process converting food waste into renewable hydrogen for clean energy, electricity, industry, and transport.

✅ Enables rapid, scalable waste-to-hydrogen deployment

✅ Supports grid power, industrial heat, and mobility fuels

✅ Backed by patents, DOE grants, and licensing deals

West Lafayette, Indiana-based Purdue Research Foundation recently completed a licensing agreement with an international energy company – the name of which was not disclosed – for the commercialization of a new process discovered at Purdue University Northwest (PNW) for the biological production of green hydrogen from food waste. A second licensing agreement with a company in Indiana is under negotiation.

Food waste into green hydrogen
Researchers say that this new process, which uses food waste to biologically produce hydrogen, can be used as a clean energy source for producing electricity, as well as for chemical and industrial processes like green steel production or as a transportation fuel.

Robert Kramer, professor of physics at PNW and principal investigator for the research, says that more than 30% of all food, amounting to $48 billion, is wasted in the United States each year. That waste could be used to create hydrogen, a sustainable energy source alongside municipal solid waste power options. When hydrogen is combusted, the only byproduct is water vapor.

The developed process has a high production rate and can be implemented quickly to support large H2 energy systems in practice. The process is robust, reliable, and economically viable for local energy production and processes.

The research team has received five grants from the US Department of Energy and the Purdue Research Foundation totaling around $800,000 over the last eight years to develop the science and technology that led to this process, much like advances in advanced nuclear reactors drive clean energy innovation.

Two patents have been issued, and a third patent is currently in the final stages of approval. Over the next nine months, a scale-up test will be conducted, reflecting how power-to-gas storage can integrate with existing infrastructure. Based upon test results, it is anticipated that construction could start on the first commercial prototype within a year.

Last week, a facility designed to turn non-recyclable plastics into green hydrogen was approved in the UK, as other innovations like the seawater power concept progress globally. It is the second facility of its kind there.

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Vineyard Wind I advances as BOEM issues a final environmental impact statement for the 800 MW offshore wind farm south of Martha's Vineyard, delivering clean energy, jobs, and carbon reductions to Massachusetts toward net-zero.

Key Points

An 800 MW offshore wind project near Martha's Vineyard supplying clean power to Massachusetts.

✅ 800 MW capacity; power for 400,000+ homes and businesses

✅ BOEM final EIS; record of decision pending within 30+ days

✅ 1.68M metric tons CO2 avoided annually; jobs and lower rates

Federal environmental officials have completed their review of the Vineyard Wind I offshore wind farm, moving the project that is expected to deliver clean renewable energy to Massachusetts by the end of 2023 closer to becoming a reality.

The U.S. Department of the Interior said Monday morning that its Bureau of Ocean Energy Management completed the analysis it resumed about a month ago, published the project's final environmental impact statement, and said it will officially publish notice of the impact statement in the Federal Register later this week.

"More than three years of federal review and public comment is nearing its conclusion and 2021 is poised to be a momentous year for our project and the broader offshore wind industry," Vineyard Wind CEO Lars Pedersen said. "Offshore wind is a historic opportunity to build a new industry that will lead to the creation of thousands of jobs, reduce electricity rates for consumers and contribute significantly to limiting the impacts of climate change. We look forward to reaching the final step in the federal permitting process and being able to launch an industry that has such tremendous potential for economic development in communities up and down the Eastern seaboard."

The 800-megawatt wind farm planned for 15 miles south of Martha's Vineyard was the first offshore wind project selected by Massachusetts utility companies with input from the Baker administration to fulfill part of a 2016 clean energy law. It is projected to generate cleaner electricity for more than 400,000 homes and businesses in Massachusetts, produce at least 3,600 jobs, reduce costs for Massachusetts ratepayers by an estimated $1.4 billion, and eliminate 1.68 million metric tons of carbon dioxide emissions annually.

Offshore wind power, informed by the U.S. offshore wind outlook, is expected to become an increasingly significant part of Massachusetts' energy mix. The governor and Legislature agree on a goal of net-zero carbon emissions by 2050, but getting there is projected to require having about 25 gigawatts of offshore wind power. That means Massachusetts will need to hit a pace in the 2030s where it has about 1 GW of new offshore wind power on the grid coming online each year.

"I think that's why today's announcement is so historic, because it does represent that culmination of work to understand how to permit and build a cost-effective and environmentally-responsible wind farm that can deliver clean energy to Massachusetts ratepayers, but also just how to do this from start to finish," said Energy and Environmental Affairs Secretary Kathleen Theoharides. "As we move towards our goal of probably [25 GW] of offshore wind by 2050 to hit our net-zero target, this does give us confidence that we have a much clearer path in terms of permitting."

She added, "There's a huge pipeline, so getting this project out really should open the door to the many additional projects up and down the East Coast, such as Long Island proposals, that will come after it."

According to the American Wind Energy Association, there are expected to be 14 offshore projects totaling 9,112 MW of capacity in operation by 2026.

Susannah Hatch, the clean energy coalition director for the Environmental League of Massachusetts and a leader of the broad-based New England for Offshore Wind Regional group, called offshore wind farms like Vineyard Wind "the linchpin of our decarbonization efforts in New England." She said the Biden administration's quick action on Vineyard Wind is a positive sign for the burgeoning sector.

"Moving swiftly on responsibly developed offshore wind is critical to our efforts to mitigate climate change, and offshore wind also provides an enormous opportunity to grow the economy, create thousands of jobs, and drive equitable economic benefits through increased minority economic participation in New England," Hatch said.

With the final environmental impact statement published, Vineyard Wind still must secure a record of decision from BOEM, which processes wind lease requests, an air permit from the Environmental Protection Agency and sign-offs from the U.S. Army Corps of Engineers and the National Marine Fisheries Service to officially clear the way for the project that is on track to be the nation's first utility-scale offshore wind farm. BOEM must wait at least 30 days from the publication of the final environmental impact statement to issue a record of decision.

Project officials have said they expect the final impact statement and then a record of decision "sometime in the first half of 2021." That would allow the project to hit its financial close milestone in the second half of this year, begin on-shore work quickly thereafter, start offshore construction in 2022, begin installing turbines in 2023 and begin exporting power to the grid, marking Vineyard Wind first power, by late 2023, Pedersen said in January.

"Offshore energy development provides an opportunity for us to work with Tribal nations, communities, and other ocean users to ensure all decisions are transparent and utilize the best available science," BOEM Director Amanda Lefton said.

The commercial fishing industry has been among the most vocal opponents of aspects of the Vineyard Wind project and the Responsible Offshore Development Alliance (RODA) has repeatedly urged the new administration to ensure the voices of the industry are heard throughout the licensing and permitting process.

In comments submitted earlier this month in response to a BOEM review of an offshore wind project that is expected to deliver power to New York, including the recent New York offshore wind approval, RODA said the present is "a time of significant confusion and change in the U.S. approach to offshore wind energy (OSW) planning" and detailed mitigation measures it wants to see incorporated into all projects.

"To be clear, none of these requests are new -- nor hardly radical. They have simply been ignored again, and again, and again in a political push/pull between multinational energy companies and the U.S. government, leaving world-famous seafood, and the communities founded around its harvest, off the table," the group said in a press release last week. Some of RODA's suggestions were analyzed as part of BOEM's Vineyard Wind review.

Vineyard Wind has certainly taken a circuitous path to get to this point. The timeline for the project was upended in August 2019 when the Trump administration decided to conduct a much broader assessment of potential offshore wind projects up and down the East Coast, which delayed the project by almost a year.

When the Trump administration delayed its action on a final environmental impact statement last year, Vineyard Wind on Dec. 1 announced that it was pulling its project out of the federal review pipeline in order to complete an internal study on whether the decision to use a certain type of turbine would warrant changes to construction and operations plan. The Trump administration declared the federal review of the project "terminated."

Within two weeks of President Joe Biden being inaugurated, Vineyard Wind said its review determined no changes were necessary and the company resubmitted its plans for review. BOEM agreed to pick up where the Trump administration had left off despite the agency previously declaring its review terminated.

"It would appear that fishing communities are the only ones screaming into a void while public resources are sold to the highest bidder, as BOEM has reversed its decision to terminate a project after receiving a single letter from Vineyard Wind," RODA said.

The final environmental impact statement that BOEM published Monday showed that the federal regulators believe the Vineyard Wind I development as proposed will have "moderate" impacts on commercial fisheries and for-hire recreational fishing outfits, and that the project combined with other factors not related to wind energy development will have "major" impacts on commercial and recreational fishing ventures.

Vineyard Wind pointed Monday to the fishery mitigation agreements it has entered into with Massachusetts and Rhode Island, a fishery science collaboration with the University of Massachusetts Dartmouth's School of Marine Science and Technology, and an agreement with leading environmental organizations around the protection of the endangered right whale.

Responding to concerns about safe navigation among RODA and others in the fishing sector, Vineyard Wind and the four other developers holding leases for offshore wind sites off New England agreed to orient their turbines in fixed east-to-west rows and north-to-south columns spaced one nautical mile apart. Last year, the U.S. Coast Guard concluded that the grid layout was the best way to maintain maritime safety and ease of navigation in the offshore wind development areas south of Martha's Vineyard and Nantucket.

Since a 2016 clean energy law kicked off the state's foray into the offshore wind world, Massachusetts utilities have contracted for a total of about 1,600 MW between two projects, Vineyard Wind I and Mayflower Wind.

A joint venture of Shell and Ocean Winds North America, Mayflower Wind was picked unanimously in 2019 by utility executives to build and operate a wind farm approximately 26 nautical miles south of Martha's Vineyard and 20 nautical miles south of Nantucket, with South Coast construction activity expected as the project progresses. The 804-megawatt project is expected to be operational by December 2025.

Massachusetts and its utilities are expected to go out to bid for up to another 1,600 MW of offshore wind generation capacity later this year using authorization granted by the Legislature in 2018.

The climate policy bill that Gov. Charlie Baker returned to the Legislature with amendments more than a month ago would require that the executive branch direct Massachusetts utilities to buy an additional 2,400 MW of offshore wind power.

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Thermoradiative Diode Power leverages infrared radiation and night-sky cooling to harvest waste heat. Using MCT (mercury cadmium telluride) detectors with photovoltaics, it extends renewable energy generation after sunset, exploiting radiative cooling and low-power density.

Key Points

Technology using MCT infrared diodes to turn radiative Earth-to-space heat loss into electricity, aiding solar at night.

✅ MCT diodes radiate to cold sky, generating tiny current at 20 C

✅ Complements photovoltaics by harvesting post-sunset infrared flux

✅ Potential up to one-tenth solar output with further efficiency gains

Conventional solar technology soaks up rays of incoming sunlight to bump out a voltage. Strange as it seems, some materials are capable of running in reverse, producing power as they radiate heat back into the cold night sky environment.

A team of engineers in Australia has now demonstrated the theory in action, using the kind of technology commonly found in night-vision goggles to generate power, while other research explores electricity from thin air concepts under ambient humidity.

So far, the prototype only generates a small amount of power, and is probably unlikely to become a competitive source of renewable power on its own – but coupled with existing photovoltaics technology and thermal energy into electricity approaches, it could harness the small amount of energy provided by solar cells cooling after a long, hot day's work.

"Photovoltaics, the direct conversion of sunlight into electricity, is an artificial process that humans have developed in order to convert the solar energy into power," says Phoebe Pearce, a physicist from the University of New South Wales.

"In that sense, the thermoradiative process is similar; we are diverting energy flowing in the infrared from a warm Earth into the cold Universe."

By setting atoms in any material jiggling with heat, you're forcing their electrons to generate low-energy ripples of electromagnetic radiation in the form of infrared light, a principle also explored with carbon nanotube energy harvesters in ambient conditions.

As lackluster as this electron-shimmy might be, it still has the potential to kick off a slow current of electricity. All that's needed is a one-way electron traffic signal called a diode.

Made of the right combination of elements, a diode can shuffle electrons down the street as it slowly loses its heat to a cooler environment.

In this case, the diode is made of mercury cadmium telluride (MCT). Already used in devices that detect infrared light, MCT's ability to absorb mid-and long-range infrared light and turn it into a current is well understood.

What hasn't been entirely clear is how this particular trick might be used efficiently as an actual power source.

Warmed to around 20 degrees Celsius (nearly 70 degrees Fahrenheit), one of the tested MCT photovoltaic detectors generated a power density of 2.26 milliwatts per square meter.

Granted, it's not exactly enough to boil a jug of water for your morning coffee. You'd probably need enough MCT panels to cover a few city blocks for that small task.

But that's not really the point, either, given it's still very early days in the field, and there's potential for the technology to develop significantly further in the future.

"Right now, the demonstration we have with the thermoradiative diode is relatively very low power. One of the challenges was actually detecting it," says the study's lead researcher, Ned Ekins-Daukes.

"But the theory says it is possible for this technology to ultimately produce about 1/10th of the power of a solar cell."

At those kinds of efficiencies, it might be worth the effort weaving MCT diodes into more typical photovoltaic networks alongside thin-film waste heat solutions so that they continue to top up batteries long after the Sun sets.

To be clear, the idea of using the planet's cooling as a source of low-energy radiation is one engineers have been entertaining for a while now. Different methods have seen different results, all with their own costs and benefits, with low-cost heat-to-electricity materials also advancing in parallel.

Yet by testing the limits of each and fine-tuning their abilities to soak up more of the infrared bandwidth, we can come up with a suite of technologies and thermoelectric materials capable of wringing every drop of power out of just about any kind of waste heat.

"Down the line, this technology could potentially harvest that energy and remove the need for batteries in certain devices – or help to recharge them," says Ekins-Daukes.

"That isn't something where conventional solar power would necessarily be a viable option."

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