Electric vehicles can now power your home for three days

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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UK Grid Connection Fast-Track would let the Energy Secretary instruct network operators and National Grid ESO to accelerate substation upgrades and transmission links for Tata's gigafactory, electric arc furnaces, and ready-to-build renewable projects.

Key Points

A UK plan letting the energy secretary fast-track grid connections via priority substation and transmission upgrades.

✅ Prioritizes substations and lines for strategic projects

✅ Supports Tata gigafactory and electric arc furnace conversions

✅ Complements Ofgem queue reforms and National Grid ESO changes

The UK energy secretary could be handed powers to fast-track connecting electricity-hungry projects, such as Jaguar Land Rover’s owner Tata’s planned electric battery factory, to the grid, under plans being discussed between government and regulators as part of the government’s green industrial revolution strategy.

Amid concerns about supply delays of up to 15 years in hooking up large schemes, the Guardian understands the move would allow Claire Coutinho to request that energy network companies accelerate upgrades to substations and power lines to connect specific new developments.

It is understood that the government and the regulator Ofgem have told National Grid’s electricity systems operator that they are “minded” to adopt its grid reform proposals to change the model for connections, which now moves at a pace set by each network operator.

A source said: “Foreign investors need assurances that, if these things are going to be built, then they can be hooked up quickly. There are physical assets, like substations and cross-Channel cables that transmission companies will need to build or upgrade.”

The government is belatedly attempting to tackle a logjam that has resulted in some developments facing a 10- to 15-year wait for a connection to the grid. Ofgem announced on Monday plans to remove “zombie” projects from the queue to connect up to speed up those ready to produce renewable power for the grid, with wind leading the power mix.

Although no equivalent queue exists for those looking to take power from the grid, ministers and officials are concerned that large projects could struggle to secure final investment and proceed without guarantees over their connection to the electricity supply.

Sources said changes to the rules had been proposed with several big projects in mind: Tata’s new £4bn electric battery factory, expected to be built in Somerset; and the switch to electric arc furnaces at Britain’s biggest steelworks at Port Talbot in south Wales, also owned by the Indian group.

The £1.25bn plan from British Steel, which is owned by China’s Jingye, to replace two blast furnaces at Scunthorpe steelworks, with an electric arc furnace at the north Lincolnshire plant and another at a site in Teesside, North Yorkshire, has also formed part of the proposals. Negotiations over the closure of blast furnaces at Port Talbot and Scunthorpe are expected to lead to thousands of job losses.

All three projects are likely to involve significant investment from the UK government, where a state-owned generation firm has been touted as a cost-saving option, alongside the companies’ overseas owners.

Britain has 10 distribution network operators, including National Grid and Northern Powergrid, which operate monopolies in their regions and handle transmission of power from the grid to end users.

Sources said the move could be announced as soon as this month, and may be included within the “connections action plan”, a broader overhaul of Britain’s network connections.

The plan, which is expected to be announced alongside the chancellor’s autumn statement next week, will rebalance the planning system to help speed up the connection of new solar and windfarms to the grid, as the biggest offshore windfarm begins UK supply this week.

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Canada Clean Electricity Procurement advances federal operations with renewable energy in Alberta, leveraging RECs, competitive sourcing, Indigenous participation, and grid decarbonization to cut greenhouse gas emissions and stimulate new clean power infrastructure.

Key Points

A plan to procure clean power and RECs, cutting emissions in Alberta and attributing use where renewables are absent.

✅ RFPs to source new clean electricity in Alberta

✅ RECs from net new Canadian renewable generation

✅ Mandatory Indigenous participation via equity or set-asides

Public Services and Procurement Canada (PSPC) is taking concrete steps to meet the Government of Canada's commitment in the Greening Government Strategy to reduce greenhouse gas emissions from federal government buildings, vehicle fleets and other operations, aligning with broader vehicle electrification trends across Canada.

The Honourable Anita Anand, Minister of Public Services and Procurement, announced the Government of Canada has launched Requests for Proposal to buy new clean electricity in the province of Alberta, which is moving ahead with the retirement of coal power to clean its grid, to power federal operations there.

As well, Canada will purchase Renewable Energy Certificates (REC) from new clean energy generation in Canada. This will enable Canada to attribute its energy consumption as clean in regions where new clean renewable sources are not yet available. The Government of Canada is excited about this opportunity to stimulate net new Canadian clean electricity generation through the procurement of RECs and complementary power purchase agreements that secure long-term supply for federal demand.

Together, these contracts will help to ensure Canada is reducing its greenhouse gas footprint by approximately 133 kilotonnes or 56% of total real property emissions in Alberta. Additionally, the contracts will displace approximately 41 kilotonnes of greenhouse gas emissions from electricity use in the rest of Canada, supporting progress toward 2035 clean electricity goals even as challenges remain.

Through these open, fair and transparent competitive procurement processes, PSPC will be a key purchaser of clean electricity and will support the growth of new clean electricity and renewable power infrastructure, such as recent turbine investments in Manitoba that expand capacity.

The Government of Canada's Clean Electricity Initiative plans to use 100% clean electricity by 2022, where available, in alignment with evolving net-zero electricity regulations that shape supply choices, to reduce greenhouse gas emissions and stimulate growth in clean renewable power infrastructure. PSPC has applied the goals of the Government of Canada's Clean Electricity Initiative to its specific requirement for net new clean electricity generation to power federal operations in Alberta.  

These procurements will support economic opportunities for Indigenous businesses by encouraging participation in the move towards clean energy, seen in provincial shifts toward clean power in Ontario that broaden markets. Each Request for Proposal incorporates mandatory requirements for Indigenous participation through equity holdings or set-asides under the Procurement Strategy for Aboriginal Business.

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Offshore Wind Vessel Charging System enables renewable energy offshore charging from wind turbines, delivering clean power to electric vessels and crew transfer ships, boosting range, safety, and net zero maritime operations with reliable, efficient infrastructure.

Key Points

A turbine-mounted offshore charger delivering renewable power to electric vessels, extending range and improving safety.

✅ Turbine-mounted, field-proven offshore charging interface

✅ Delivers 100% renewable electricity to electric vessels

✅ Accelerates net zero, cuts maritime fossil fuel use

An offshore charging system will power vessels with 100% renewably generated electricity from wind turbines, aligning with projects like battery-electric high-speed ferries now advancing in the United States.

The system, developed by Teesside marine electrical engineering firm MJR Power and Automation, will be presented at the Global Offshore Wind event in Manchester (21-22 June), alongside interest in EV energy storage for buildings that could complement offshore charging solutions.

Known as the Offshore Wind On-Turbine Electrical Vessel Charging System, MJR says the chargepoints will provide efficient, safe and reliable transfer of clean power for crew vehicles and other offshore support vessels, while emerging vehicle-to-grid capacity on wheels concepts highlight the wider role of electric fleets.

“This innovation will break down the existing range barriers and increase the uptake by vessel owners and operators, as demonstrated by electric ships on the B.C. coast moving to fully electric and green propulsion systems for retrofit and new-build vessels,” an announcement said.

“In combination with other field-proven technologies, the charging system will be an important part for government and offshore wind owners and operators to achieve their net zero maritime operations targets, and switch away from fossil fuels, complemented by port initiatives such as all-electric berth at London Gateway now under development. The ability to charge when in the field will significantly accelerate adoption of current emission-free propulsion systems, which will be a major asset for the decarbonisation of the global maritime sector.”

The firm recently announced that construction and in-house testing of the system had been completed. The development project was part of the Clean Maritime Demonstration Competition, funded by the Department for Transport and delivered in partnership with Innovate UK, reflecting wider interest in reversing the charge to the grid for resilient energy systems.

MJR electrical engineer Mohammed Latif said: “Our system will be absolutely crucial in helping governments to deliver on their net zero carbon targets, supported by plans like new UK-Europe interconnectors that strengthen clean energy supply, and I am looking forward to demonstrating how it works and the benefits it offers.”

As part of the project, MJR Power and Automation led a consortium of partners – Ore Catapult, Xceco, Artemis Technologies and Tidal Transit – that all provided expertise.

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Canada Renewable Power sees Prairie Provinces surge as Canada Energy Regulator projects rising wind, solar, and hydro capacity in Alberta, Saskatchewan, and Manitoba, replacing coal, expanding the grid, and lowering emissions through 2023.

Key Points

A CER outlook on Canada's grid: Prairie wind, solar, and hydro growth replacing coal and cutting emissions by 2023.

✅ Prairie wind, solar capacity surge by 2023

✅ Alberta, Saskatchewan shift from coal to renewables, gas

✅ Manitoba strengthens hydro leadership, low-carbon grid

Canada's Prairie Provinces will lead the country's growth in renewable energy capacity over the next three years, says a new report by the Canada Energy Regulator (CER).

The online report, titled Canada's Renewable Power, says decreased reliance on coal and substantial increases in wind and solar capacity will increase the amount of renewable energy added to the grid in Alberta and Saskatchewan. Meanwhile, Manitoba will strengthen its position as a prominent hydro producer in Canada. The pace of overall renewable energy growth is expected to slow at the national level between 2021 and 2023, in part due to lagging solar demand in some markets, but with strong growth in provinces with a large reliance on fossil fuel generation.

The report explores electricity generation in Canada and provides a short-term outlook for renewable electricity capacity in each province and territory to 2023. It also features a series of interactive visuals that allow for comparison between regions and highlights the diversity of electricity sources across Canada.

Electricity generation from renewable sources is expected to continue increasing as demand for electricity grows and the country continues its transition to a lower-carbon economy. Canada will see gradual declines in overall carbon emissions from electricity generation largely due to Saskatchewan, Alberta, Nova Scotia and New Brunswick replacing coal with renewables and natural gas. The pace of growth beyond 2023 in renewable power will depend on technological developments; consumer preferences; and government policies and programs.

Canada is a world leader in renewable power, generating almost two-thirds of its electricity from renewables with hydro as the dominant source, and the country ranks in the top 10 for hydropower jobs worldwide. Canada also has one of the world's lowest carbon intensities for electricity.

The CER produces neutral and fact-based energy analysis to inform the energy conversation in Canada. This report is part of a portfolio of publications on energy supply, demand and infrastructure that the CER publishes regularly as part of its ongoing market monitoring.

Report highlights

• Wind capacity in Saskatchewan is projected to triple and nearly double in Alberta between 2020 and 2023 as wind power becomes more competitive in the market. Significant solar capacity growth is also projected, with Alberta adding 1,200 MW by 2023, as Canada approaches a 5 GW solar milestone by that time.
• In Alberta, the share of renewables in the capacity mix is expected to increase from 16% in 2017 to 26% by 2023, with a renewable energy surge supporting thousands of jobs. Similarly, Saskatchewan's renewable share of capacity is expected to increase from 25% in 2018 to 33% in 2023.
• Renewable capacity growth slows most notably in Ontario, where policy changes have scaled back growth projections. Between 2010 and 2017, renewable capacity grew 6.8% per year. Between 2018 and 2023, growth in Ontario slows to 0.4% per year as capacity grows by 466 MW over this period.
• New large-scale hydro, wind, and solar projects will push the share of renewables in Canada's electricity mix from 67% of installed capacity in 2017 to 71% in 2023.
• Hydro is the dominant source of electricity in Canada accounting for 55% of total installed capacity and 59% of generation, though Alberta's limited hydro stands as a notable exception, with B.C., Manitoba, Quebec, Newfoundland and Labrador, and Yukon deriving more than 90% of their power from hydro.
• The jurisdictions with the highest percentage of non-hydro renewable electricity generation are PEI (100%), Nova Scotia (15.8%), and Ontario (10.5%).
• In 2010, 62.8% of Canada's total electricity generation (364 681 GW‧h) was from renewable sources. By 2018, 66.2% (425 722 GW‧h) was from renewable sources and projected to be 71.0% by 2023.

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UK electric vehicle sales reached a record high in September, with battery and hybrid cars making up over half of new registrations. SMMT credits carmaker discounts, new models, and a £3,750 EV grant for driving strong demand across the UK market.

Why are UK Electric Vehicle Sales Surging to a Record High?

UK electric vehicle sales are surging to a record high because automakers are offering major discounts, more models are available than ever, and the government’s new £3,750 EV grant is making electric cars more affordable and appealing to both fleets and private buyers.

✅ BEV sales up nearly one-third in September

✅ Over half of all new cars are now electrified

✅ £3,750 EV grants boost consumer confidence

Electric vehicle (EV) sales in the United Kingdom reached a record high last month, marking a significant milestone in the country’s transition to cleaner transportation. According to the latest figures from the Society of Motor Manufacturers and Traders (SMMT), sales of pure battery electric vehicles (BEVs) surged by nearly one-third to 72,779 units in September, while plug-in hybrid registrations grew even faster.

The combined total of fully electric and hybrid vehicles accounted for more than half of all new car registrations, underscoring the growing appeal of electrified transport, alongside global EV market growth, among both businesses and private consumers. In total, 312,887 new vehicles were registered across the country — the strongest September performance since 2020, according to SMMT data.

SMMT chief executive Mike Hawes said the surge in electrified vehicle sales showed that “electrified vehicles are powering market growth after a sluggish summer.” He credited carmaker incentives, a wider choice of models, and government support for helping accelerate adoption, though U.S. EV market share dipped in Q1 2024 by comparison. “Industry investment in electric vehicles is paying off,” Hawes added, even as he acknowledged that “consumer demand still trails ambition.”

The UK government’s new electric car grant scheme has played a significant role in the rebound. The program offers buyers discounts of up to £3,750 on eligible EVs priced under £37,000. So far, more than 20,000 motorists have benefited, with 36 models approved for reductions of at least £1,500. Participating manufacturers include Ford, Toyota, Vauxhall, and Citroën.

Ian Plummer, chief commercial officer at Autotrader, said the grant had given a “real lift to the market,” echoing fuel-crisis EV inquiry surge in the UK. He noted that “since July, enquiries for new electric vehicles on Autotrader are up by almost 50%. For models eligible for the grant, interest has more than doubled.”

While the majority of BEVs — about 71.4% — were purchased by companies and fleets, the number of private buyers has also been increasing. Zero-emission vehicles now account for more than one in five (22.1%) new car registrations so far in 2025, similar to France’s 20% EV share record, highlighting the growing mainstream appeal of electric mobility.

The surge comes amid a challenging backdrop for the automotive sector, even as U.S. EV sales soared into 2024 across the Atlantic. The UK car industry is still reeling from the effects of US trade tariffs and recent disruptions, such as Jaguar Land Rover’s production shutdown following a cyberattack. Despite these hurdles, the strong September figures have boosted confidence in the industry’s recovery trajectory, and EU EV share grew during lockdown months offers precedent for resilience.

Among individual models, the Kia Sportage, Ford Puma, and Nissan Qashqai led overall sales, while two Chinese vehicles — the Jaecoo 7 and BYD Seal U — entered the top ten, reflecting China’s growing footprint in the UK market. Analysts say the arrival of competitively priced Chinese EVs could further intensify competition and drive prices lower for consumers.

With electrified vehicles now dominating new registrations and fresh government incentives in place, industry observers believe the UK is gaining momentum toward its long-term net-zero goals. The challenge, however, remains converting business fleet enthusiasm into sustained private-buyer confidence through affordable models, with UK consumer price concerns still a factor, reliable charging infrastructure, and continued policy support.

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