Arvato commissions first solar power plant

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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US Solar Electricity Generation 2022 rose to a 4.7% share, with 202,256 GWh, per EIA Electric Power Monthly; driven by PV capacity additions despite import constraints, alongside renewables trends in wind, nuclear, and hydroelectric output.

Key Points

The share and output of US solar PV in 2022: 4.7% of electricity and 202,256 GWh, as reported by the EIA.

✅ Solar PV reached 4.7% of US power; 202,256 GWh generated in 2022.

✅ Monthly share varied from about 3% in Jan to just over 6% in Apr.

✅ Wind was 10.1%; wind+solar hit slightly over 20% in April.

In 2022, solar photovoltaics made up 4.7% of U.S. electricity generation, an increase of almost 21% over the 2021 total when solar produced 3.9% of US electricity and about 3% in 2020 according to long-term outlooks. Total solar generation was up 25%, breaking through 200,000 GWh for the year.

The record deployment volumes of 2020 when renewables became the second-most U.S. electricity source and 2021 are the main factors behind this increase. If it were not for ongoing solar panel import difficulties and general inflation, solar’s contribution to electricity generation might have reached 5% in 2022. The data was released by the Department of Energy’s Energy Information Administration (EIA) in their Electric Power Monthly. This release includes data from December 2022, as well as the rest of the data from 2022.

Solar as a percentage of monthly electricity generation ranged from a low of almost 3% in January, to just over 6% in April. April’s production marked a new monthly record for solar generation in the US and coincided with a renewables share record that month.

Total generation of solar electricity peaked in July, at 21,708 GWh. Over the course of the year, solar production reached  202,256 GWh, and total U.S. electricity generation reached 4,303,980 GWh, a year in which renewables surpassed coal in the power mix overall. Total US electricity generation increased by 3.5% over the 4,157,467 GWh produced in 2021.

In 2022, wind energy contributed 10.1% of the total electricity generated in the United States. Wind and solar together produced 14.8% of U.S. electricity in 2022, growing from the 13% recorded in 2021. In April, when solar power peaked at just over 6%, wind and solar power together reached a peak of slightly over 20%, as a wind-and-solar milestone versus nuclear was noted that month, a new monthly record for the two energy sources.

In total, emissions free energy sources such as wind, solar photovoltaic and thermal, nuclear, hydroelectric, and geothermal, accounted for 37.9% of the total electricity generated in the U.S., while renewables provided about 25.5% share of the mix during the year. This value is barely higher than 2020’s 37.7% – but represents a return to growth after 2021 saw a decrease in emission free electricity to 37%.

Nuclear power was the most significant contributor to emission free electricity, making up a bit more than 45% of the total emissions free electricity. Wind energy ranked second at 26%, followed by hydroelectricity at 15%, and solar photovoltaic at 12%, confirming solar as the #3 renewable in the U.S. mix.

Emissions free electricity is a different summation than the EIA’s ‘Renewable Energy’ category. The Renewable Energy category also includes:

• Wood and Wood-Derived Fuels
• Landfill Gas
• Biogenic Municipal Solid Waste
• Other Waste Biomass

Nuclear produced 17.9% of the total U.S. electricity, a value that has generally stayed flat over the years. However, since nuclear facilities are being retired faster than new facilities are coming online, nuclear production has fallen in the past two years. After multiple long delays, we will probably see reactor three of the Vogtle nuclear facility come online in 2023. Reactor four is officially scheduled to come online later this year.

Hydroelectric production also declined in 2022, due to drought conditions in the southwestern United States. With rain and snow storms in California and the southwest, hydroelectricity generation may rebound in 2023.

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Pyroelectric Energy Harvesting captures low-grade heat via thin-film materials, converting temperature fluctuations into power for waste heat recovery in electronics, vehicles, and industrial machinery, offering a thermoelectric alternative for microelectronics and exascale systems.

Key Points

Thin-film pyroelectric harvesting turns temperature changes into electricity, enabling low-grade waste heat recovery.

✅ Converts low-grade heat fluctuations into usable power

✅ Thin-film design suits microelectronics and edge devices

✅ Alternative to thermoelectrics for waste heat recovery

The electronic device you are reading this on is currently producing a modest to significant amount of waste heat that emerging thermoelectric materials could help recover in principle. In fact, nearly 70% of the energy produced annually in the US is ultimately wasted as heat, much of it less than 100 degrees Celsius. The main culprits are computers and other electronic devices, vehicles, as well as industrial machinery. Heat waste is also a big problem for supercomputers, because as more circuitry is condensed into smaller and smaller areas, the hotter those microcircuits get.

It’s also been estimated that a single next-generation exascale supercomputer could feasibly use up to 10% of the energy output of just one coal-fired power station, and that nearly all of that energy would ultimately be wasted as heat.

What if it were possible to convert that heat energy into a useable energy source, and even to generate electricity at night from temperature differences as well?

#google#

It’s not a new idea, of course. In fact the possibility of thermoelectric energy generation, where thermal energy is turned into electricity was recognised as early as 1821, around the same time that Michael Faraday developed the electric motor.

Unfortunately, when the heat source is ‘low grade’, aka less than 100 degrees Celsius, a number of limitations arise, and related approaches for nighttime renewable generation face similar challenges as well. For it to work well, you need materials that have quite high electrical conductivity, but low thermal conductivity. It’s not an easy combination to come by.

Taking a different approach, researchers at the University of California, Berkeley, have developed thin-film that uses pyroelectric harvesting to capture heat-waste and convert heat to electricity in prototype demonstrations. The findings were published today in Nature Materials.

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Harbour Air Electric Aircraft Project advances zero-emission aviation with CleanBC Go Electric ARC funding, converting seaplanes to battery-electric power, cutting emissions, enabling commercial passenger service, and creating skilled clean-tech jobs through R&D and electrification.

Key Points

Harbour Air's project electrifies seaplanes with CleanBC ARC support to enable zero-emission flights and cut emissions.

✅ $1.6M CleanBC ARC funds seaplane electrification retrofit

✅ Target: passenger-ready, zero-emission commercial service

✅ Creates 21 full-time clean-tech jobs in British Columbia

B.C.’s Harbour Air Seaplanes is building on its work in clean technology to decarbonize aviation, part of an aviation revolution underway, and create new jobs with support from the CleanBC Go Electric Advanced Research and Commercialization (ARC) program.

”Harbour Air is decarbonizing aviation and elevating the company to new altitudes as a clean-technology leader in B.C.'s transportation sector,” said Bruce Ralston, Minister of Energy, Mines and Low Carbon Innovation. “With support from our CleanBC Go Electric ARC program, Harbour Air's project not only supports our emission-reduction goals, but also creates good-paying clean-tech jobs, exemplifying the opportunities in the low-carbon economy.”

Harbour Air is receiving almost $1.6 million from the CleanBC Go Electric ARC program for its aircraft electrification project. The funding supports Harbour Air’s conversion of an existing aircraft to be fully electric-powered and builds on its successful December 2019 flight of the world’s first all-electric commercial aircraft, and subsequent first point-to-point electric flight milestones.

That flight marked the start of the third era in aviation: the electric age. Harbour Air is working on a new design of the electric motor installation and battery systems to gain efficiencies that will allow carrying commercial passengers, as it eyes first electric passenger flights in 2023. Approximately 21 full-time jobs will be created and sustained by the project.

“CleanBC is helping accelerate world-leading clean technology and innovation at Harbour Air that supports good jobs for people in our communities,” said George Heyman, Minister of Environment and Climate Change Strategy. “Once proven, the technology supports a switch from fossil fuels to advanced electric technology, and will provide a clean transportation option, such as electric ferries, that reduces pollution and shows the way forward for others in the sector.”

Harbour Air is a leader in clean-technology adoption. The company has also purchased a fully electric, zero-emission passenger shuttle bus to pick up and drop off passengers between Harbour Air’s downtown Vancouver and Richmond locations, and the Vancouver International Airport, where new EV chargers support travellers.

“It is great to see the Province stepping up to support innovation,” said Greg McDougall, Harbour Air CEO and ePlane test pilot. “This type of funding confirms the importance of encouraging companies in all sectors to focus on what they can be doing to look at more sustainable practices. We will use these resources to continue to develop and lead the transportation industry around the world in all-electric aviation.”

In total, $8.18 million is being distributed to 18 projects from the second round of CleanBC Go Electric ARC program funding. Recipients include Damon Motors and IRDI System, both based on the Lower Mainland. The 15 other successful projects will be announced this year.

The CleanBC Go Electric ARC program supports the electric vehicle (EV) sector in B.C., which leads the country in going electric, by providing reliable and targeted support for research and development, commercialization and demonstration of B.C.-based EV technologies, services and products.

“This project is a great example of the type of leading-edge innovation and tech advancements happening in our province,” said Brenda Bailey, Parliamentary Secretary for Technology and Innovation. “By further supporting the development of the first all-electric commercial aircraft, we are solidifying our position as world leaders in innovation and using technology to change what is possible.”

The CleanBC Roadmap to 2030 is B.C.’s plan to expand and accelerate climate action, including a major hydrogen project, building on the province’s natural advantages – abundant, clean electricity, high-value natural resources and a highly skilled workforce. It sets a path for increased collaboration to build a British Columbia that works for everyone.

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Utility-Controlled EV Charging shapes who builds charging stations as utilities, regulators, and private networks compete over infrastructure, grid upgrades, and pricing, impacting ratepayers, competition, and EV adoption across states seeking cleaner transport.

Key Points

Utility-controlled EV charging is utilities building charging networks affecting rates, competition and grid costs.

✅ Regulated investment may raise rates before broader savings.

✅ Private firms warn monopolies stifle competition and innovation.

✅ Regulators balance access, equity, and grid upgrade needs.

Electric vehicles are widely seen as the automobile industry’s future, but a battle is unfolding in states across America over who should control the charging stations that could gradually replace fuel pumps.

From Exelon Corp. to Southern California Edison, utilities have sought regulatory approval to invest millions of dollars in upgrading their infrastructure as state power grids adapt to increased charging demand, and, in some cases, to own and operate chargers.

The proposals are sparking concerns from consumer advocates about higher electric rates and oil companies about subsidizing rivals. They are also drawing opposition from startups that say the successors to gas stations should be open to private-sector competition, not controlled by monopoly utilities.

That debate is playing out in regulatory commissions throughout the U.S. as states and utilities promote wider adoption of electric vehicles. At stake are charging infrastructure investments expected to total more than $13 billion over the next five years, as an American EV boom accelerates, according to energy consulting firm Wood Mackenzie. That would cover roughly 3.2 million charging outlets.

Calvin Butler Jr., who leads Exelon’s utilities business, said many states have grown more open to the idea of utilities becoming bigger players in charging as electric vehicles have struggled to take off in the U.S., where they make up only around 2% of new car sales.

“When the utilities are engaged, there’s quicker adoption because the infrastructure is there,” he said.

Major auto makers including General Motors Co. and Ford Motor Co. are accelerating production of electric vehicles, and models like Tesla’s Model 3 are shaping utility planning, and a number of states have set ambitious EV goals—most recently California, which aims to ban the sale of new gasoline-powered cars by 2035. But a patchy charging-station network remains a huge impediment to mass EV adoption.

Democratic presidential candidate Joe Biden has called for building more than 500,000 new public charging outlets in a decade as part of his plan to combat climate change, amid Biden’s push to electrify the transportation sector. But exactly how that would happen is unclear. The U.S. currently has fewer than 100,000 public outlets, according to the Energy Department. President Trump, who has weakened federal tailpipe emissions targets, hasn’t put forward an electric-vehicle charging plan, though he backed a 2019 transportation bill that would have provided $1 billion in grants to build alternative fueling infrastructure, including for electric vehicles.

Charging access currently varies widely by state, as does utility involvement, with many utilities bullish course on EV charging to support growth, which can range from providing rebates on home chargers to preparing sites for public charging—and even owning and operating the equipment needed to juice up electric vehicles.

As of September, regulators in 24 states had signed off on roughly $2.6 billion of utility investment in transportation electrification, according to Atlas Public Policy, a Washington, D.C., policy firm. More than half of that spending was authorized in California, where electric vehicle adoption is highest.

Nearly a decade ago, California blocked utilities from owning most charging equipment, citing concerns about potentially stifling competition. But the nation’s most populous state reversed course in 2014, seeking to spur electrification.

Regulators across the country have since been wrestling with similar questions, generating a patchwork of rules.

Maryland regulators signed off last year on a pilot program allowing subsidiaries of Exelon and FirstEnergy Corp. to own and operate public charging stations on government property, provided that the drivers who use them cover at least some of the costs.

Months later, the District of Columbia rejected an Exelon subsidiary’s request to own public chargers, saying independent charging companies had it covered.

Some charging firms argue utilities shouldn’t be given monopolies on car charging, though they might need to play a role in connecting rural customers and building stations where they would otherwise be uneconomical.

“Maybe the utility should be the supplier of last resort,” said Cathy Zoi, chief executive of charging network EVgo Services LLC, which operates more than 800 charging stations in 34 states.

Utility charging investments generally are expected to raise customers’ electricity bills, at least initially. California recently approved the largest charging program by a single utility to date: a $436 million initiative by Southern California Edison, an arm of Edison International, as the state also explores grid stability opportunities from EVs. The company said it expects the program to increase the average residential customer’s bill by around 50 cents a month.

But utilities and other advocates of electrification point to studies indicating greater EV adoption could help reduce electricity rates over time, by giving utilities more revenue to help cover system upgrades.

Proponents of having utilities build charging networks also argue that they have the scale to do so more quickly, which would lead to faster EV adoption and environmental improvements such as lower greenhouse gas emissions and cleaner air. While the investments most directly help EV owners, “they accrue immediate benefits for everyone,” said Jill Anderson, a Southern California Edison senior vice president.

Some consumer advocates are wary of approving extensive utility investment in charging, citing the cost to ratepayers.

“It’s like, ‘Pay me now, and maybe someday your rates will be less,’” said Stefanie Brand, who advocates on behalf of ratepayers for the state of New Jersey, where regulators have yet to sign off on any utility proposals to invest in electric vehicle charging. “I don’t think it makes sense to build it hoping that they will come.”

Groups representing oil-and-gas companies, which stand to lose market share as people embrace electric vehicles, also have criticized utility charging proposals.

“These utilities should not be able to use their monopoly power to use all of their customers’ resources to build investments that definitely won’t benefit everybody, and may or may not be economical at this point,” said Derrick Morgan, who leads federal and regulatory affairs at the American Fuel & Petrochemical Manufacturers, a trade organization.

Utility executives said their companies have long been used to further government policy objectives deemed to be in the public interest, drawing on lessons from 2021 to guide next steps, such as improving energy efficiency.

“This isn’t just about letting market forces work,” said Mike Calviou, senior vice president for strategy and regulation at National Grid PLC’s U.S. division.

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Peak Power V1G EV chargers optimize smart charging in Ontario, using Synergy technology and ZEVIP support to manage peak demand, enhance grid capacity, and expand EV infrastructure across mixed-use developments with utility-friendly energy management.

Key Points

Peak Power's V1G smart chargers use Synergy tech to cut peak load and grow Ontario EV charging access.

✅ 117 chargers funded by NRCAN's ZEVIP program

✅ Synergy tech shifts load off peak to boost grid capacity

✅ Partners: SWTCH Energy and Signature Electric

Peak Power, a Canadian climate tech company with a core focus in energy management and energy storage, announces it has received a $765,000 investment through Natural Resources Canada’s (NRCan) Zero Emission Vehicle Infrastructure Program (ZEVIP) to install 117 V1G chargers as Ontario energy storage push intensifies province-wide planning. The total cost of the project is valued at over $1.6 million.

Peak Power will install the V1G chargers across several mixed-use developments in Ontario. Peak Power’s Synergy technology, which is currently used in the company’s successful Peak Drive EV charging project, will underpin the chargers. The Synergy tech will enable the chargers to draw energy from the grid when it’s most widely available and avoid times of peak demand, similar to emerging EV-to-grid integration pilots now, and can also adjust the flow rate at which the cars are charged. The intelligent chargers will reduce strain on the grid, benefiting utilities and electricity users by increasing grid capacity as well as giving EV drivers more locations to charge their vehicles.

As part of ZEVIP, the project supports the federal government’s goals of accelerating the electrification of Canada’s transportation sector. The 117 chargers will encourage adoption of EVs, as drivers have access to expanded infrastructure for charging, and as Ontario streamlines charging-station builds to accelerate deployments. From the perspective of grid operators, the intelligent nature of the Peak Power software will allow more capacity from the grid without requiring major infrastructure upgrades.

Peak Power will work with partners with deep expertise in EV charging to install the chargers. SWTCH Energy is co-developing the software for the EV chargers with Peak Power, while Signature Electric will install the hardware and supporting infrastructure.

“We’re thrilled to support the Canadian government's electrification goals through smart EV charging,” said Matthew Sachs, COO of Peak Power. “The funding from NRCan will enable us to provide drivers with more options for EV charging, while the smart nature of our Synergy tech in the chargers means grid operators don’t have to worry about capacity restraints when EVs are plugged into the grid, with EV owners selling power back offering additional flexibility too. ZEVIP is critical to greater electrification of the country’s infrastructure, and we’re proud to support the initiative.”

“Happy EV Week, Canada. Our government is making electric vehicles more affordable and charging more accessible where Canadians live, work and play, for example through the Ivy and ONroute charging network that supports travel corridors,” said the Honourable Jonathan Wilkinson, Minister of Natural Resources. “Investing in more EV chargers, like the ones announced today in Ontario, will put more Canadians in the driver’s seat on the road to a net-zero future and help achieve our climate goals.”

"I'm pleased to be announcing the deployment of over 100 Electric Vehicle chargers across Ontario with Peak Power,” said Julie Dabrusin, Parliamentary Secretary to the Minister of Natural Resources and to the Minister of Environment and Climate Change, and Member of Parliament for Toronto-Danforth. “This $765,000 investment by the Government of Canada will allow folks in Toronto and across the province to access the infrastructure they need, as B.C. expands EV charging shows national momentum, to drive an EV while fighting climate change. Happy #EVWeek!”

"Limited access to EV charging infrastructure in high-density mixed-used environments remains a key barrier to widespread EV adoption,” said Carter Li, CEO of SWTCH. “SWTCH’s partnership with Peak Power and Signature Electric to deploy V1G technology to these settings will enhance coordination between energy utilities, building operators, and EV drivers to improve building energy efficiency and access to EV charging infrastructure, with charger rebates in B.C. expanding home and workplace options as well.”

“Signature Electric is proud to be a partner on increasing the availability of localized charging for Canadians,” said Mark Marmer, Owner of Signature Electric. “Together, we can scale EV infrastructure to support Canada’s commitment to achieving net-zero emissions by 2050.”

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