Ukraine's Green Fightback: Rising from the Ashes with Renewable Energy

Green Hydrogen for Steelmaking enables decarbonization in Germany by powering electrolyzers with wind turbines at Salzgitter. Partners Vestas, Avacon, and Linde support renewable hydrogen for iron ore reduction, cutting CO2 in heavy industry.

Key Points

Hydrogen from renewable-powered electrolysis replacing coal in iron ore reduction, cutting CO2 emissions from steelmaking

✅ 30 MW Vestas wind farm powers 2x1.25 MW electrolyzers.

✅ Salzgitter, Avacon, Linde link sectors to replace fossil fuels.

✅ Targets CO2 cuts in iron ore reduction and steel smelting.

A major green hydrogen facility in Germany has started operations, with those behind the project hoping it will help to decarbonize the energy-intensive steel industry in the years ahead. 

The "WindH2" project involves German steel giant Salzgitter, E.ON subsidiary Avacon and Linde, a firm specializing in engineering and industrial gases, and aligns with calls for hydrogen-ready power plants in Germany today.

Hydrogen can be produced in a number of ways. One method includes using electrolysis, with an electric current splitting water into oxygen and hydrogen, and advances in PEM hydrogen technology continue to improve efficiency worldwide.

If the electricity used in the process comes from a renewable source such as wind or solar, as underscored by recent German renewables gains, then it's termed "green" or "renewable" hydrogen.

The development in Germany is centered around seven new wind turbines operated by Avacon and two 1.25 megawatt (MW) electrolyzer units installed by Salzgitter Flachstahl, which is part of the wider Salzgitter Group. The facilities were presented to the public this week. 

The turbines, from Vestas, have a hub height of 169 meters and a combined capacity of 30 MW. All are located on premises of the Salzgitter Group, with three situated on the site of a steel mill in the city of Salzgitter, Lower Saxony, northwest Germany, where grid expansion woes can affect project timelines.

The hydrogen produced using renewables will be utilized in processes connected to the smelting of iron ore. Total costs for the project come to roughly 50 million euros (around $59.67 million), with the building of the electrolyzers subsidized by state-owned KfW, while a national net-zero roadmap could reduce electricity costs over time.

"Green gases have the wherewithal to become 'staple foodstuff' for the transition to alternative energies and make a considerable contribution to decarbonizing industry, mobility and heat," E.ON's CEO, Johannes Teyssen, said in a statement issued Thursday.

"The jointly realized project symbolizes a milestone on the path to virtually CO2 free production and demonstrates that fossil fuels can be replaced by intelligent cross-sector linking," he added.

According to the International Energy Agency, the iron and steel sector is responsible for 2.6 gigatonnes of direct carbon dioxide emissions each year, a figure that, in 2019, was greater than the direct emissions from sectors such as cement and chemicals. 

It adds that the steel sector is "the largest industrial consumer of coal, which provides around 75% of its energy demand."

The project in Germany is not unique in focusing on the role green hydrogen could play in steel manufacturing.

Across Europe, projects are also exploring natural gas pipe storage to balance intermittent renewables and enable sector coupling.

H2 Green Steel, a Swedish firm backed by investors including Spotify founder Daniel Ek, plans to build a steel production facility in the north of the country that will be powered by what it describes as "the world's largest green hydrogen plant."

In an announcement last month the company said steel production would start in 2024 and be based in Sweden's Norrbotten region.

Other energy-intensive industries are also looking into the potential of green hydrogen, and examples such as Schott's green power shift show parallel decarbonization. A subsidiary of multinational building materials firm HeidelbergCement has, for example, worked with researchers from Swansea University to install and operate a green hydrogen demonstration unit at a site in the U.K.

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EV Boom Aftershock highlights electric vehicles straining grid capacity as policy accelerates adoption, requiring charging infrastructure, renewable energy storage, and transition models from Tesla, NIO, Toyota, GM, Blink Charging, and Facedrive's Steer subscription.

Key Points

EV Boom Aftershock is the grid and industry strain from rapid EV adoption requiring charging and storage upgrades.

✅ Policy push: fleet electrification, 550k chargers planned

✅ Grid capacity, storage, and charging infrastructure are critical

✅ Bridge models: subscriptions, rideshare, and logistics electrification

2020 ushered in the start of the EV boom, but it could have a frightening aftershock. The world is already seeing some of the incredible triple-digit gains in EV companies like Tesla and Workhorse. And this EV wave is only expected to grow bigger in the days ahead under the Biden administration.  Mentioned in today's commentary includes:  Tesla, Inc., NIO Limited, Toyota Motor Corporation, General Motors Company, Blink Charging Co.

Just a week after inauguration, President Biden reported he plans to replace the entire government fleet with electric vehicles. That's up to 643,000 vehicles turning electric on the government's dime. But Toyota's president, Akio Toyoda, had an ominous prediction for what could lie ahead.

He stated that if EVs are adopted too quickly, we may not have the energy to support them at this point. In fact, he predicted Japan would run out of electricity by summer if they banned all gas-powered vehicles now. He even went as far as to say that if we rush the process of transitioning to EVs all at once, "the current business model of the auto industry is going to collapse."

While the buzz for electric vehicles has only grown over the last year, many often miss this key piece in making such a drastic shift in such a short period. And although it's expected to create plenty of demand for solar, wind, nuclear, and geothermal energy sources…

At this point in the game, they are still too expensive and lack the storage capacity we'd need for those to be the final solution. That's why companies bridging the gap to the EV world are thriving.

Facedrive, a company known for its "people and planet first" approach, has seen incredible success over the last year, for example. They recently acquired EV subscription company, Steer, from the largest clean energy producer in the United States. Steer's subscription model for EV cars is putting a major twist on the traditional car ownership model. So instead of everyone going out and buying their own EV, they can borrow one as-needed instead.

With Facedrive's acquisition of Steer, customers pay a simple monthly fee like with Netflix, and they get access to a fleet of EVs at their disposal.

Over the last year, big moves like this have helped Facedrive sign a number of important partnerships and deals including government agencies, A-list celebrities, and major multinational corporations. And they've even managed to grow their business throughout the United States and Canada during a time when ridesharing as an industry suffered during global lockdowns.

Smartest in the World Making Bold Predictions

While Toyota's president made a dark prediction about where we could be headed, he's not alone in being concerned. Elon Musk expressed his own concerns about the issue recently as well.

In an interview in December, he said that the world's electricity consumption would likely double once EVs become the norm. And that's only accounting for this mass adoption in electric vehicles.

The situation could become even more pressing as the rest of our lives grow increasingly digital too, sucking up more electricity in the process. With the "internet of things" creating smart cities and smart homes, the demand for electricity will only go up as everything from Peloton bikes to Nest thermostats are now connected by the internet.

With thousands of cars on the roads during morning and evening commutes, it's not hard to imagine times where we simply wouldn't have enough grid capacity to charge all EVs that need it at once.

But in the meantime, Facedrive's moves are putting them squarely in position to smooth out the transition. And in addition to the monthly membership model used with Steer, they're helping keep the number of cars on the road down through their signature ridesharing service.

Their model is simple. When customers hail a ride, they have the choice to ride in an electric vehicle or a standard gas-powered car. After they get to their destination, the Facedrive algorithm sets aside a portion of the fare to plant trees, offsetting the carbon footprint from the ride. In other words, customers ride, they plant a tree.

Through next-gen technology and partnerships, they're giving their customers the option to make a more eco-friendly choice if they choose. Plus, Facedrive has added a booming food delivery service, which has expanded at a record pace while folks were stuck at home during global lockdowns.

They're now delivering over 4,100 orders per day on average. And after growing to 19 major cities, they plan to expand to more cities throughout the U.S. and Canada soon. It's this kind of innovative thinking that has many so optimistic about the opportunities that lie ahead.

Who Will Win In The EV Boom?

Elon Musk warned that, like with the boom in smartphones, we're not likely to see the EV revolution all happen at once, and industry leaders still see mainstream hurdles ahead for broad adoption. Because just like with smartphones, you can't replace them all at once. But it's undeniable that the movement is growing at a remarkable pace, with many arguing it has reached an inflection point already in several segments today.

Even under an administration that was not supportive of climate change and green initiatives, the EV markets have soared throughout 2020, and U.S. EV sales are surging into 2024 as well across segments.

Tesla was one of the biggest market stories of the year, locking in over 700% gains on its way to becoming one of the largest companies on the S&P 500. And experts are expecting to see massive spending on the infrastructure needed for EVs under the Biden administration too.

In addition to his vow to spend more on clean energy research, President Biden also reported plans to build out 550,000 EV charging stations across the country. With the growth we've seen in this area already, it's also caused shares for companies like Plug Power to soar over 1,000% in 2020. And Facedrive has been sharing in this success too, with incredible gains of 834% over the last year.

Facedrive hasn't been the only company riding the EV wave, however.  Tesla (TSLA) was among the biggest market stories of 2020 with incredible gains of over 700%. This helped them become one of the highest-valued stocks in the United States with other Big Tech giants. It is now the most valuable car maker "of all time". It is now worth almost $800 billion.

After a much-touted Battery Day event and expectations of Musk developing a "Million Mile Battery" in the near future, Tesla recently joined the S&P 500.

Billionaire Elon Musk had his eye on this trend far before the hype started building. He released the first Tesla Roadster back in 2008, making electric vehicles cool when people were still snubbing their noses at the first-generation EVs. Since then, Tesla's stock has skyrocketed by over 14,000%. But while Tesla's EV threat to the industry is clear, the competition is heating up in China's EV market right now as rivals scale.

Nio (NIO) is Tesla's biggest competitor, dominating the Chinese EV markets. After going public in 2018, it's been on a tear, producing vehicles with record-breaking range. They recently unveiled their first electric sedan with a longer range battery, which sent shares surging in early January.

Nio's current performance is a far cry from just one year ago In fact, many shareholders were ready to write off their losses and give up on the company. But China's answer to Tesla's dominance powered on, eclipsed estimates, and most importantly, kept its balance sheet in line. And it's paid off. In a big way. The company has seen its share price soar from $3.24 at the start of 2020 to a high of $61 this month, representing a massive 1600% returns for investors who held strong. 

By NIO's fourth quarter report in October, the company announced that its sales had more-than doubled, projecting even greater sales in 2021. The EV up-and-comer has shocked investors and pulled itself back after its rumored potential bankruptcy in 2019, and if this year shows investors anything, it's that its CEO William Li is as skilled and ambitious as anyone in the business.

Toyota Motors (TM) is a massive international car producer who hasn't ignored the transition to greener transportation. In fact, the Toyota Prius was one of the first hybrids to hit the road in a big way. While the legacy hybrid vehicle has been the butt of many jokes throughout the years, the car has been a major success, and more importantly, it helped spur the adoption of greener vehicles for years to come.

And just because its Prius hasn't exactly aged as well as some green competitors, Toyota hasn't left the green power race yet. Just a few days ago, actually, the giant automaker announced that three new electric vehicles will be coming to United States markets soon.

Toyota has a major hold over U.S. markets at the moment. In fact, it maintains a 75% share of total fuel cell vehicles and a 64% share in hybrid and plug-in vehicles. And now it's looking to capture a greater share of electric vehicles, as well.

General Motors (GM) is one of the legacy automakers benefiting from a shift from gas-powered to EV technology. Even with the downfall of Detroit, GM has persisted, and that's due in large part to its ability to adapt. In fact, GM's dive into alternative fuels began way back in 1966 when it produced the world's first ever hydrogen-powered van for testing. And it has not stopped innovating, either.

With the news of GM's new business unit, BrightDrop, they plan to sell electric vans and services to commercial delivery companies, disrupting the market for delivery logistics. This is a huge move as delivery sales have absolutely exploded during the COVID-19 pandemic, and are projected to grow even further over the coming years.

And in January 2021, the giant automaker announced that it will discontinue production of all gas-powered vehicles, including hybrids, by 2035. This is a key factor in its commitment to become carbon-net zero by 2040.  The move will likely sit well with shareholders which are increasingly pushing for companies to clean up their act.

Blink Charging (BLNK) is building an EV charging network that may be small right now, but it's got explosive growth potential that is as big as the EV market itself. This stock is on a major tear and all that cash flowing into it right now gives Blink the superpower to acquire and expand. 

A wave of new deals, including a collaboration with EnerSys and another with Envoy Technologies to deploy electric vehicles and charging stations adds further support to the bullish case for Blink.

Michael D. Farkas, Founder, CEO and Executive Chairman of Blink noted, "This is an exciting collaboration with EnerSys because it combines the industry-leading technologies of our two companies to provide user-friendly, high powered, next-generation charging alternatives. We are continuously innovating our product offerings to provide more efficient and convenient charging options to the growing community of EV drivers."

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Nature-friendly offshore wind energy supports climate neutrality by reducing greenhouse gases while safeguarding marine biodiversity through EU marine spatial planning, ecosystem-based approaches, cross-border coordination, and zero-use zones for resilient seas.

Key Points

An approach to offshore wind that cuts emissions while respecting ecological limits and protecting marine biodiversity.

✅ Aligns buildout with ecological limits and marine spatial plans

✅ Minimizes noise, collision, and habitat loss for sensitive species

✅ Coordinates EU-wide monitoring, data, and cross-border siting

Offshore wind power can help reduce greenhouse gas emissions, but it poses risks for the seas. Germany will hold the EU Council Presidency and the North Sea Energy Cooperation Presidency in 2020. What must be done to contain the climate and species crises, as it were?

Offshore wind power is an important regenerative energy source with a $1 trillion market outlook in the coming decades. However, the construction, operation and maintenance of the systems put marine mammals, birds and fish at considerable risk. Photo: Siemens AG

In order to achieve the German and EU climate and energy goals by 2030 and climate neutrality by 2050, we need a nature-friendly energy transition. At present, the European energy system is largely based on fossil fuels. This is changing, as renewables surge across Europe for end consumers and industry and the large-scale electrification of the energy consumption sectors. Offshore wind energy is an element for future power generation.

A nature-friendly energy transition is only possible if energy consumption is reduced and energy efficiency is maximized in all applications and sectors. Emissions reductions through offshore wind energy In 2019, Europe had an installed offshore wind energy capacity of around 22 gigawatts from 5,047 grid-connected wind turbines in twelve countries. In Germany, the nominal output of the offshore wind turbines feeding into the German power grid was around 7.5 gigawatts, with clean energy accounting for about 50% of electricity nationwide. The wind blows much stronger and more steadily at sea than on land.

The power capacity of the turbines has also almost doubled in the last five years, which has led to a higher energy yield. Offshore wind energy is a building block for replacing fossil fuels, and markets like the U.S. offshore sector are about to soar as well. Wind turbines at sea provide electricity almost every hour of the year and have operating hours that are as high as conventional power plants. They can contribute to significant reductions in CO2 emissions and to mitigate the climate crisis.

It must be ensured that offshore wind turbines and parks as well as the grid infrastructure make a positive contribution to climate protection through their expansion and that the overall condition of marine ecosystems improves. The expansion of offshore wind energy is necessary from the point of view of climate science and must take place within the framework of the ecological load limits and under nature conservation aspects.

Seas and marine ecosystems suffer from years of overfishing, pollution and industrial use. The conservation status of sea birds, marine mammals and fish stocks is poor. Ecosystem services and productivity of the oceans are decreasing as a result of massive species extinction and unfavorable habitats. Changes in sea temperature, oxygen levels and acidification of the oceans reduce their resilience to the climate crisis.

The latest reports from the European Environment Agency show in black and white that the good environmental status and other goals of the Marine Strategy Framework Directive are not being achieved. The primary goal must therefore be to meet the obligations of the Marine Strategy Framework Directive and the EU nature conservation directives.

With the expansion of offshore wind energy, the pressure on the already polluted marine ecosystems is increasing. Offshore wind turbines also harbor risks for marine ecosystems, especially if they are built in unfavorable locations. Studies show harmful effects on marine mammals, birds, fish and the ocean floor. In Europe, where wind power investments hit $29.4 billion last year, a regulatory framework must be created for the expansion of offshore wind energy within the ecological limits and taking into account zero-use zones. The European Union urgently needs to take coherent measures for healthy and resilient seas.

New strategy of the European Commission The EU Commission plans to present a strategy for the expansion of renewable energies at sea on November 18, 2020.

The strategy will address the opportunities and challenges associated with the expansion of renewable energies at sea, such as effects on energy networks and markets, management of the maritime space, the technological transfer of research projects, regional and international cooperation and industrial policy dimensions, as well as political headwinds in some countries that can affect project pipelines. NABU welcomes the strategy, but worries about insufficient consideration of marine protection, ecological load-bearing capacity and the marine spatial planning that regulates interests in the use of the sea. All EU member states have to submit their marine spatial planning plans by March 2021.

Conclusions of the European Council Shortly before the end of 2020, the European Council plans to adopt conclusions for cooperation among European member states on the subject of offshore wind energy and other renewable energy sources at sea. It is important that the planning and development of offshore wind energy is coordinated across national borders, including alignment with the UK's offshore wind growth, also to protect marine ecosystems.

However, the ecosystem approach must not be left out. It must be ensured that the Council conclusions focus on the implementation of EU marine and nature conservation directives for the expansion of offshore wind energy within the load limits. EU-wide monitoring systems can help protect marine species and ecosystems. Germany holds the EU Council Presidency and the North Sea Energy Cooperation Presidency for 2020 and can make a decisive contribution.

NABU demands on offshore wind energy in Europe Expansion targets for offshore wind energy across Europe should be based on the ecological load limits of the seas. Development of concrete concepts for the ecological upgrading of areas in marine spatial planning and operationalization of the ecosystem-based approach.

For the nature-friendly expansion of offshore – Wind energy systems must take into account avoidance distances from seabirds to turbines, habitat loss, collision risks and cumulative effects. Implementation / obligation to sensitivity analyzes – they allow targeted conclusions about the best possible locations for offshore wind energy without conflicts with marine protection.

Targeted keeping of areas free for species and their Habitats of anthropogenic use – this increases planning security and can lower investment thresholds for EU funding programs. Ensuring regional cooperation between the European member states for nature Protection and with the involvement of nature conservation authorities – after all, the marine ecosystem does not stop at borders.

Adjustment of priorities: If offshore wind energy is prioritized over other renewable energy sources across Europe, other industrial forms of use of the seas must be given a lower priority.

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Tesla Battery Day Innovations detail larger cylindrical EV cells with higher energy density, greater power, longer range, cobalt-free chemistry, automated manufacturing, battery recycling, and lower cost per kWh to enable an affordable electric car.

Key Points

Tesla Battery Day innovations are new EV cells and methods to cut costs, extend range, and scale production.

✅ Larger cylindrical cells: 5x energy, 6x power, 16% more range

✅ Automation and recycling to cut battery cost per kWh

✅ Near-zero cobalt chemistry, in-house cell factories worldwide

Elon Musk described a new generation of electric vehicle batteries that will be more powerful, longer lasting, and half as expensive as the company’s current cells at Tesla’s “Battery Day”.

Tesla’s new larger cylindrical cells will provide five times more energy, six times more power and 16% greater driving range, Musk said, adding that full production is about three years away.

“We do not have an affordable car. That’s something we will have in the future. But we’ve got to get the cost of batteries down,” Musk said.

To help reduce cost, Musk said Tesla planned to recycle battery cells at its Nevada “gigafactory,” while reducing cobalt – one of the most expensive battery materials – to virtually zero. It also plans to manufacture its own battery cells at several highly automated factories around the world.

The automaker plans to produce the new cells via a highly automated, continuous-motion assembly process, according to Drew Baglino, Tesla senior vice-president of powertrain and energy engineering, a contrast with GM and Ford battery strategies in the broader market today.

Speaking at the event, during which Musk outlined plans to cut costs and reiterated a huge future for Tesla's energy business during the presentation, the CEO acknowledged that Tesla does not have its new battery design and manufacturing process fully complete.

The automaker’s shares slipped as Musk forecast the change could take three years. Tesla has frequently missed production targets.

Tesla expects to eventually be able to build as many as 20m electric vehicles a year, aligning with within-a-decade EV adoption outlooks cited by analysts. This year, the entire auto industry expects to deliver 80m cars globally.

At the opening of the event, which drew over 270,000 online viewers, Musk walked on stage as about 240 shareholders – each sitting in a Tesla Model 3 in the company parking lot – honked their car horns in approval.

As automakers shift from horsepower to kilowatts to comply with stricter environmental regulations amid an age of electric cars that appears ahead of schedule, investors are looking for evidence that Tesla can increase its lead in electrification technology over legacy automakers who generate most of their sales and profits from combustion-engine vehicles.

While average electric vehicle prices have decreased in recent years thanks to changes in battery composition and evidence that they are better for the planet and household budgets, they are still more expensive than conventional cars, with the battery estimated to make up a quarter to a third of an electric vehicle’s cost.

Some researchers estimate that price parity, or the point at which electric vehicles are equal in value to internal combustion cars, is reached when battery packs cost $100 per kilowatt hour (kWh), a potential inflection point for mass adoption.

Tesla’s battery packs cost $156 per kWh in 2019, according to electric vehicle consulting firm Cairn Energy Research Advisors, with some studies noting that EVs save money over time for consumers, which would put the cost of a 90-kWh pack at around $14,000.

Tesla is also building its own cell manufacturing facility at its new factory in Germany in addition to the new plant in Fremont.

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SEA Electric school bus conversions bring EV electrification to Type A and Type C fleets, adding V2G, smart charging, battery packs, and zero-emissions performance while extending service life with cost-effective retrofits across US school districts.

Key Points

Retrofit EV drivetrains for Type A and C buses, adding V2G and smart charging to cut emissions and costs.

✅ Converts 10,000 Type A and C school buses over five years

✅ Adds V2G, smart charging, and fleet battery management

✅ Cuts diesel fumes, maintenance, and total cost of ownership

Converting a Porsche 356C to electric power is a challenge. There’s precious little room for batteries, converters, and such. But converting a school bus? That’s as easy as falling off a log, even if adoption challenges persist in the sector today. A bus has acres of space for batteries and the electronics need to power an electric motor.

One of the dumbest ideas human beings ever came up with was sealing school children inside a diesel powered bus for the trip to and from school. Check out our recent article on the impact of fossil fuel pollution on the human body. Among other things, fine particulates in the exhaust gases of an internal combustion engine have been shown to lower cognitive function. Whose bright idea was it to make school kids walk through a cloud of diesel fumes twice a day when those same fumes make it harder for them to learn?

Help may be on the way, as lessons from the largest e-bus fleet offer guidance for scaling. SEA Electric, a provider of electric commercial vehicles originally from Australia and now based in Los Angeles has stuck a deal with Midwest Transit Equipment to convert 10,000 existing school buses to electric vehicles over the next five years. Midwest will provide the buses to be converted to the SEA Drive propulsion system. SEA Electric will complete the conversions using its “extensive network of up-fitting partners,” Nick Casas, vice president of sales and marketing for SEA Electric, says in a press release.

After the conversions are completed, the electric buses will have vehicle to grid (V2G) capability that will allow them to help balance the local electrical grid, where state power grids face new demands, and “smart charge” when electricity prices are lowest. The school buses to be converted are of the US school bus class Type A  or Type C. Type A is the smallest US school bus with a length of 6 to 7.5 metres and is based on a van chassis. The traditional Type C school buses are built on truck architectures.

SEA Electric says that the conversion will extend the life of the buses by more than ten years, with early deployments like B.C. electric school buses demonstrating real-world performance, and that two to three converted buses can be had for the price of one new electric bus. Mike Menyhart, chief strategy officer at SEA Electric says, “The secondary use of school buses fitted with all-electric drivetrains makes a lot of sense. It keeps costs down, opens up considerable availability, creates green jobs right here in the US, all while making a difference in the environment and the health of the communities we serve.”

According to John McKinney, CEO of Midwest Transport Equipment, the partnership with SEA Electric will ensure that it can respond more quickly to customers’ needs as policies like California's 2035 school-bus mandate accelerate demand in key markets. “As the industry moves towards zero emissions we are positioned well with our SEA Electric partnership to be a leader of the electrification movement.”

According to Nick Casas, SEA Electric will plans to expand it operations to the UK soon, and intends to do business in six countries in Europe, including Germany, in the years to come. SEA says it will have delivered more than 500 electric commercial vehicles in 2021 and plans to put more than 15,000 electric vehicles on the road by the end of 2023. Just a few weeks ago, SEA Electric announced an order for 1,150 electric trucks based on the Toyota Hino cargo van for the GATR company of California, highlighting truck fleet power needs that utilities must plan for today.

Electric school buses make so much sense. No fumes to fog young brains, lower maintenance costs, and lower fuel costs are all pluses, especially as bus depot charging hubs scale across markets, adding resilience. Extending the service life of an existing bus by a decade will obviously pay big dividends for school bus fleet operators like MTE. It’s a win/win/win situation for all concerned, with the possible exception of diesel mechanics. But the upside there is they can be retrained in how to maintain electric vehicles, a skill that will be in increasing demand as the EV revolution picks up speed.

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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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