Four effective ways to meet US decarbonization goals


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US Grid Decarbonization demands balancing renewables, reliability, and resilience with smart transmission, storage, siting, and demand response, leveraging digital asset management to modernize infrastructure while meeting climate goals and rising electricity consumption.

 

Key Points

Low-carbon power while maintaining reliability via renewables, storage, transmission, and digital operations.

✅ Siting wind and solar requires community engagement and environmental review

✅ Balance variable renewables with storage, flexible load, and firm capacity

✅ Modernize transmission and digitize asset data for reliable operations

 

Last week, over 13,000 energy and technology leaders arrived in Dallas for DISTRIBUTECH International to share knowledge, showcase new technology advancements, and discuss initiatives to prepare for the future of energy. Among the many topics discussed was the critical need to balance rising energy demands and environmental pressures while understanding why the grid isn't 100% renewable today alongside effective climate change solutions.

The most widespread source of energy consumption is electricity. According to The U.S. Energy Information Administration, 2020 electricity consumption rates were roughly 3.8 trillion kWh - 13 times higher than in 1950. With our ever-increasing reliance on electricity, renewables' share of generation is also rising and this number is sure to grow exponentially in the coming years.

How can the US achieve meaningful decarbonization goals without sacrificing reliable and stable energy? Here are 4 of the biggest challenges and practical ways to meet them:


Siting New Solar and Wind Farms
Building renewable energy sources is more difficult than it seems. Scouting for sites is fraught with issues such as community opposition due to local aesthetics and clean energy's hidden costs around disruption to the environment and recreation.

NIMBY (Not In My Backyard) is an influential source of opposition. Local residents join together in an effort to prevent shore front views in wealthy coastal areas from obstruction, which are needed to support offshore wind farms. These farms can also negatively impact local fisheries, while outdoor sports and entertainment activities such as sailing, waterskiing, fishing, or swimming may be disrupted, which are equally opposed by NIMBY advocates.

Utilities must take these concerns into account when scouting for renewable energy sites.

 

Maintaining Consistent Availability of Generation Capacity
The capacity to generate consistent, reliable electricity is both a regional and nationwide concern.

Wind and solar farms depend on a consistent level of wind velocity and sunny periods, yet wind and solar could meet 80% of U.S. demand and regional concerns must be considered. For example, the southwestern United States is an ideal location for large commercial solar arrays. Areas in the north are more problematic since fall and winter days are shorter, reducing their ability to consistently generate energy. The Midwest is a prime location for wind-based generation since it experiences a consistent level of wind throughout the year.

Nighttime periods and cloudy days virtually eliminate solar farms as a consistent energy source while loss of available winds impacts the reliability of wind as a base load supply of energy generation.

 

Pivoting From Current Energy Usage Models
Over the last 20 years, utilities have been heavily involved with normalizing consumer energy consumption curves, pursuing grid resilience strategies to manage variability. Due to the high cost of siting new fossil fuel facilities, building new electric grid interconnections, and the high commodity pricing for imported power, utilities were driven to modify their customers’ energy usage patterns.

These consumption regulating policies included:

  • Time of use metering to entice customers to use high energy devices at night
  • Installation of energy monitoring devices on high use customer equipment to enable the utility to reduce energy demand during peak use periods
  • Charging electric vehicles overnight

With fundamental changes occurring in how energy is generated, the availability of renewable power during low or no-sun periods and lower wind levels will require utilities to alter their energy consumption models.

 

Utilizing Government Support of New Electric Infrastructure
With the proposed government infusion of funds, including a rule to boost renewable transmission, to build and modernize infrastructures, utility leaders will be ideally positioned to drastically improve the reliability of the US electric grid.

Utilities will be involved in aggressive transmission line building projects to ensure the effective distribution of energy across multiple state lines, aligning with the U.S. grid overhaul for renewables underway today. This expansive build out of the US transmission and distribution system will create a dramatic increase in the need to accurately document the location and details of the new utility assets for current tracking and future analysis needs.

Energy leaders must seek advanced technology to provide them with solutions for precisely this purpose. Manual, paper-based field data collection must be replaced with digital workflows which automate and simplify asset data capture and analysis. Continued reliance on manual methods will cause them to lag behind the industry and impede their ability to support renewable energy for the modern era.

 

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EV charging to solar panels: How connected tech is changing the homes we live in

Connected Home Energy Technologies integrate solar panels, smart meters, EV charging, battery storage, and IoT energy management to cut costs, optimize demand response, and monitor usage in real time for safer, lower-carbon homes.

 

Key Points

Devices and systems managing home energy: solar PV, smart meters, EV chargers, and storage to cut costs and emissions.

✅ Real-time visibility via apps, smart meters, and IoT sensors

✅ Integrates solar PV, batteries, and EV charging with the grid

✅ Enables demand response, lower bills, and lower carbon

 

Driven by advances in tech and the advent of high-speed internet connections, many of us now have easy access to a raft of information about the buildings we live in.

Thanks to the proliferation of hardware and software within the home, this trend shows no sign of letting up and comes in many different forms, from indoor air quality monitors to “smart” doorbells which provide us with visual, real-time notifications when someone is attempting to access our property.

Residential renewable electricity generation is also starting to gain traction, with a growing number of people installing solar panels in the hope of reducing bills and their environmental footprint.

In the U.S. alone, the residential solar market installed 738 megawatts of capacity in the third quarter of 2020, a 14% jump compared to the second quarter, according to a recent report from the Solar Energy Industries Association and Wood Mackenzie.

Earlier this month, California-headquartered SunPower — which specializes in the design, production and delivery of solar panels and systems — announced it was rolling out an app which will enable homeowners to assess and manage their energy generation, usage and battery storage settings with their mobile, as California looks to EVs for grid stability amid broader electrification.

The service will be available to customers using its SunPower Eqiunox system and represents yet another instance of how connected technologies can provide us with valuable information about how buildings operate.

Similar offerings in this increasingly crowded marketplace include so-called “smart” meters, which allow consumers to see how much energy they are using and money they are spending in real time.

Elsewhere products such as Hive, from Centrica, enable users to install a range of connected kit — from plugs and lighting to thermostats and indoor cameras — that can be controlled via an app on their cellphone and, in some cases, their voice. 

Connected car charging
Solar panels represent one way that sustainable tech can be integrated into homes. Other examples include the installation of charging points for electric vehicles, as EV growth challenges state grids in many markets.

With governments around the world looking to phase-out the sale of diesel and gasoline vehicles and encourage consumers to buy electric, and Model 3's utility impact underscoring likely shifts in demand, residential charging systems could become an integral part of the built environment in the years ahead.

Firms offering home-based, connected, charging include Pod Point and BP Pulse. Both of these services include apps which provide data such as how much energy has been used, the cost of charging and charge history.  

Another firm, Wallbox, recently announced it was launching its first electric vehicle charger for North American homes.

The company, which is based in Spain, said the system was compatible with all types of electric vehicles, would allow customers to schedule charges, and could be voice-controlled through Google Assistant and Amazon Alexa, while mobile energy storage promises added flexibility for strained grids.

Away from the private sector, governments are also making efforts to encourage the development of home charging infrastructure.

Over the weekend, U.K. authorities said the Electric Vehicle Homecharge Scheme — which gives drivers as much as £350 (around $487) toward a charging system — would be extended and expanded, targeting those who live in leasehold and rented properties, even as UK grid capacity for EVs remains under scrutiny.

Mike Hawes, chief executive of the Society of Motor Manufacturers and Traders, described the government’s announcement as “welcome and a step in the right direction.”

“As we race towards the phase out of sales of new petrol and diesel cars and vans by 2030, we need to accelerate the expansion of the electric vehicle charging network, and proper grid management can ensure EVs are accommodated at scale,” he added.

“An electric vehicle revolution will need the home and workplace installations this announcement will encourage, but also a massive increase in on-street public charging and rapid charge points on our strategic road network.”

Change afoot, but challenges ahead
As attempts to decarbonize buildings and society ramp up, the way our homes look and function could be on the cusp of quite a big shift.

“Grid-connected home generation technologies such as solar electric panels will be important in the shift to a 100% renewable electricity grid, but decarbonising the electricity supply is only one part of the transition,” Peter Tyldesley, chief executive of the Centre for Alternative Technology, told CNBC via email.

With reference to Britain, Tyldesley went on to explain how his organization envisaged “just under 10% of electricity in a future zero carbon society coming from solar PV, utilising 15-20% of … U.K. roof area.” This, he said, compared to over 75% of electricity coming from wind power. 

Heating, Tyldesley went on to state, represented “the bigger challenge.”

“To decarbonise the U.K.’s housing stock at the scale and speed needed to get to zero carbon, we’ll need to refurbish possibly a million houses every year for the next few decades to improve their insulation and airtightness and to install heat pumps or other non-fossil fuel heating,” he said.

“To do this, we urgently need a co-ordinated national programme with a commitment to multi-year government investment,” he added.

On the subject of buildings becoming increasingly connected, providing us with a huge amount of data about how they function, Tyldesley sought to highlight some of the opportunities this could create. 

“Studies of the roll out of smart metering technology have shown that consumers use less energy when they are able to monitor their consumption in real time, so this kind of technology can be a useful part of behaviour change programmes when combined with other forms of support for home efficiency improvements,” he said.

“The roll out of smart appliances can go one step further — responding to signals from the grid and, through vehicle-to-grid power, helping to shift consumption away from peak times towards periods when more renewable energy is available,” he added.

 

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Canada must commit to 100 per cent clean electricity

Canada Green Investment Gap highlights lagging EV and clean energy funding as peers surge. With a green recovery budget pending, sustainable finance, green bonds, EV charging, hydrogen, and carbon capture are pivotal to decarbonization.

 

Key Points

Canada lags peers in EV and clean energy investment, urging faster budget and policy action to cut emissions.

✅ Per capita climate spend trails US and EU benchmarks

✅ EVs, hydrogen, charging need scaled funding now

✅ Strengthen sustainable finance, green bonds, disclosure

 

Canada is being outpaced on the international stage when it comes to green investments in electric vehicles and green energy solutions, environmental groups say.

The federal government has an opportunity to change course in about three weeks, when the Liberals table their first budget in over two years, the International Institute for Sustainable Development (IISD) argued in a new analysis endorsed by nine other climate action, ecology and conservation organizations.

“Canada’s international peers are ramping up commitments for green recovery, including significant investments from many European countries,” states the analysis, “Investing for Tomorrow, Today,” published March 29.

“To keep up with our global peers, sufficient investments and strengthened regulations, including EV sales regulations, must work in tandem to rapidly decarbonize all sectors of the Canadian economy.”

Deputy Prime Minister and Finance Minister Chrystia Freeland confirmed last week that the federal budget will be tabled April 19. The Liberals are expected to propose between $70 billion and $100 billion in fiscal stimulus to jolt the economy out of its pandemic doldrums.

The government teased a coming economic “green transformation” late last year when Freeland released the fall economic statement, promising to examine federal green bonds, border carbon adjustments and a sustainable finance market, with tweaks like tightening the climate-risk disclosure obligations of corporations.

The government has also proposed a wide range of green measures in its new climate plan released in December — which the think tank called the “most ambitious” in Canada’s history — including energy retrofit programs, boosting hydrogen and other alternative fuels, and rolling out carbon capture technology in a grid where 18% of electricity still came from fossil fuels in 2019.

But the possible “three-year stimulus package to jumpstart our recovery” mentioned in the fall economic statement came with the caveat that the COVID-19 virus would have to be “under control.” While vaccines are being administered, Canada is currently dealing with a rise of highly transmissible variants of the virus.

Freeland spoke with United States Vice-President Kamala Harris on March 25, highlighting potential Canada-U.S. collaboration on EVs alongside the “need to support entrepreneurs, small businesses, young people, low-wage and racialized workers, the care economy, and women” in the context of an economic recovery.

Biden is contemplating a climate recovery plan that could exceed US$2 trillion as Canada looks to capitalize on the U.S. auto pivot to EVs to spur domestic industry. Per capita, that is over 8 times what Canada has announced so far for climate-related spending in the wake of the pandemic, according to a new analysis from green groups.
U.S. President Joe Biden is contemplating a climate and clean energy recovery plan that could “exceed US$2 trillion,” White House officials told reporters this month. “Per capita, that is over eight times what Canada has announced so far for climate-related spending in the wake of the pandemic,” the IISD-led analysis stated.

Biden’s election platform commitment of $508 billion over 10 years in clean energy was also seen as “significantly higher per capita than Canada’s recent commitments.”

Since October 2020, Canada has announced $36 billion in new climate-focused funding, a 2035 EV mandate and other measures, the groups found. By comparison, they noted, a political agreement in Europe proposed that a minimum of 37 per cent of investments in each national recovery plan should support climate action. France and Germany have also committed tens of billions of dollars to support clean hydrogen.

As for electric vehicles (EVs), the United Kingdom has committed $4.9 billion, while Germany has put up $7.5 billion to expand EV adoption and charging infrastructure and sweeten incentive programs for prospective buyers, complementing Canada’s ambitious EV goals announced domestically. The U.K. has also committed $3.5 billion for bike lanes and other active transportation, the groups noted.

Canada announced $400 million over five years this month for a new network of bike lanes, paths, trails and bridges, the first federal fund dedicated to active transportation.

 

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Is residential solar worth it?

Home Solar Cost vs Utility Bills compares electricity rates, ROI, incentives, and battery storage, explaining payback, financing, and grid fees while highlighting long-term savings, rate volatility, and backup power resilience for homeowners.

 

Key Points

Compares home solar pricing and financing to utility rates, outlining savings, incentives, ROI, and backup power value.

✅ Average retail rates rose 59% in 20 years; volatility persists

✅ Typical 7.15 kW system costs $18,950 before incentives

✅ Federal ITC and state rebates improve ROI and payback

 

When shopping for a home solar system, sometimes the quoted price can leave you wondering why someone would move forward with something that seems so expensive. 

When compared with the status quo, electricity delivered from the utility, the price may not seem so high after all. First, pv magazine will examine the status quo, and how much you can expect to pay for power if you don’t get solar panels. Then, we will examine the average cost of solar arrays today and introduce incentives that boost home solar value.

The cost of doing nothing

Generally, early adopters have financially benefited from going solar by securing price certainty and stemming the impact of steadily increasing utility-bill costs, particularly for energy-insecure households who pay more for electricity.

End-use residential electric customers pay an average of $0.138/kWh in the United States, according to the Energy Information Administration (EIA). In California, that rate is $0.256/kWh, it averages $0.246/kWh across New England, $0.126/kWh in the South Atlantic region, and $0.124/kWh in the Mountain West region.

EIA reports that the average home uses 893 kWh per month, so based on the average retail rate of $0.138/kWh, that’s an electric bill of about $123 monthly, or $229 monthly in California.

Over the last 20 years, EIA data show that retail electricity prices have increased 59% across the United States, with evidence indicating that renewables are not making electricity more expensive, suggesting other factors have driven costs higher, or 2.95% each year.

This means based on historical rates, the average US homeowner can expect to pay $39,460 over the next 20 years on electricity bills. On average, Californians could pay $73,465 over 20 years.

Recent global events show just how unstable prices can be for commodities, and energy is no exception here, with solar panel sales doubling in the UK as homeowners look to cut soaring bills. What will your utility bill cost in 20 years?

These estimated bills also assume that energy use in the home is constant over 20 years, but as the United States electrifies its homes, adds more devices, and adopts electric vehicles, it is fair to expect that many homeowners will use more electricity going forward.

Another factor that may exacerbate rate raising is the upgrade of the national transmission grid. The infrastructure that delivers power to our homes is aging and in need of critical upgrades, and it is estimated that a staggering $500 billion will be spent on transmission buildout by 2035. This half-trillion-dollar cost gets passed down to homeowners in the form of raised utility bill rates.

The benefit of backup power may increase as time goes on as well. Power outages are on the rise across the United States, and recent assessments of the risk of power outages underscore that outages related to severe weather events have doubled in the last 20 years. Climate change-fueled storms are expected to continue to rise, so the role of battery backup in providing reliable energy may increase significantly.

The truth is, we don’t know how much power will cost in 20 years. Though it has increased 59% across the nation in the last 20 years, there is no way to be certain what it will cost going forward. That is where solar has a benefit over the status quo. By purchasing solar, you are securing price certainty going forward, making it easier to budget and plan for the future.

So how do these costs compare to going solar?

Cost of solar

As a general trend, prices for solar have fallen. In 2010, it cost about $40,000 to install a residential solar system, and since then, prices have fallen by as much as 70%, and about 37% in the last five years. However, prices have increased slightly in 2022 due to shipping costs, materials costs, and possible tariffs being placed on imported solar goods, and these pressures aren’t expected to be alleviated in the near-term.

When comparing quotes, the best metric for an apples-to-apples comparison is the cost per watt. Price benchmarking by the National Renewable Energy Laboratory shows the average cost per watt for the nation was $2.65/W DC in 2021, and the average system size was 7.15 kW. So, an average system would cost about $18,950. With 12.5 kWh of battery energy storage, the average cost was $4.26/W, representing an average price tag of $30,460 with batteries included.

The prices above do not include any incentives. Currently, the federal government applies a 26% investment tax credit to the system, bringing down system costs for those who qualify to $14,023 without batteries, and $22,540 with batteries. Compared to the potential $39,460 in utility bills, buying a solar system outright in cash appears to show a clear financial benefit.

Many homeowners will need financing to buy a solar system. Shorter terms can achieve rates as low as 2.99% or less, but financing for a 20-year solar loan typically lands between 5% to 8% or more. Based on 20-year, 7% annual percentage rate terms, a $14,000 system would total about $26,000 in loan payments over 20 years, and the system with batteries included would total about $42,000 in loan payments.

Often when you adopt solar, the utility will still charge you a grid access fee even if your system produces 100% of your needs. These vary from utility to utility but are often around $10 a month. Over 20 years, that equates to about $2,400 that you’ll still need to pay to the utility, plus any costs for energy you use beyond what your system provides.

Based on these average figures, a homeowner could expect to see as much as $12,000 in savings with a 20-year financed system. Homeowners in regions whose retail energy price exceeds the national average could see savings in multiples of that figure.

Though in this example batteries appear to be marginally more expensive than the status quo over a 20-year term, they improve the home by adding the crucial service of backup power, and as battery costs continue to fall they are increasingly being approved to participate in grid services, potentially unlocking additional revenue streams for homeowners.

Another thing to note is most solar systems are warranted for 25 years rather than the 20 used in the status quo example. A panel can last a good 35 years, and though it will begin to produce less in old age, any power produced by a panel you own is money back in your pocket.

Incentives and home value

Many states have additional incentives to boost the value of solar, too, and federal proposals to increase solar generation tenfold could remake the U.S. electricity system. Checking the Database of State Incentives for Renewables (DSIRE) will show the incentives available in your state, and a solar representative should be able to walk you through these benefits when you receive a quote. State incentives change frequently and vary widely, and in some cases are quite rich, offering thousands of dollars in additional benefits.

Another factor to consider is home value. A study by Zillow found that solar arrays increase a home value by 4.1% on average. For a $375,000 home, that’s an increase of $15,375 in value. In most states home solar is exempt from property taxes, making it a great way to boost value without paying taxes for it.

Bottom line

We’ve shared a lot of data on national averages and the potential cost of power going forward, but is solar for you? In the past, early adopters have been rewarded for going solar, and celebrate when they see $0 electric bills paid to the utility company.

Each home is different, each utility is different, and each homeowner has different needs, so evaluating whether solar is right for your home will take a little time and analysis. Representatives from solar companies will walk you through this analysis, and it’s generally a good rule of thumb to get at least three quotes for comparison.

A great resource for starting your research is the Solar Calculator developed by informational site SolarReviews. The calculator offers a quote and savings estimate based on local rates and incentives available to your area. The website also features reviews of installers, equipment, and more.

Some people will save tens of thousands of dollars in the long run with solar, while others may witness more modest savings. Solar will also provide the home clean, local energy, and U.S. solar generation is projected to reach 20% by 2050 as capacity expands, making an impact both on mitigating climate change and in supporting local jobs.

One indisputable benefit of solar is that it will offer greater clarity into what your electricity bills will cost over the next couple of decades, rather than leaving you exposed to whatever rates the utility company decides to charge in the future.

 

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YVR welcomes government funding for new Electric Vehicle Chargers

YVR EV Charging Infrastructure Funding backs new charging stations at Vancouver International Airport via ZEVIP and CleanBC Go Electric, supporting Net Zero 2030 with Level 2 and DC fast charging across Sea Island.

 

Key Points

A federal and provincial effort to expand EV charging at YVR, accelerating airport electrification toward Net Zero 2030.

✅ Up to 74 new EV charging outlets across Sea Island by 2025

✅ Funded through ZEVIP and CleanBC Go Electric programs

✅ Supports passengers, partners, and YVR fleet electrification

 

Vancouver International Airport (YVR) welcomes today’s announcement from the Government of Canada, which confirms new federal funding under Natural Resource Canada’s Zero Emission Vehicle Infrastructure Program (ZEVIP) and broader zero-emission vehicle incentives for essential infrastructure at the airport that will further enable YVR to achieve its climate targets.

This federal funding, combined with funding through the Government of British Columbia’s CleanBC Go Electric program, which includes EV charger rebates, will support the installation of up to 74 additional Electric Vehicle (EV) Charging outlets across Sea Island over the next three years. EV charging infrastructure is identified as a key priority in the airport’s Roadmap to Net Zero 2030. It is also an important part of its purpose in being a Gateway to the New Economy.

“We know that our passengers’ needs and expectations are changing as EV adaptation increases across our region and policies like the City’s EV-ready requirements take hold, we are always working hard to anticipate and exceed these expectations and provide world-class amenities at our airport,” said Tamara Vrooman, President & CEO, Vancouver Airport Authority.

This airport initiative is among 26 projects receiving $19 million under ZEVIP, which assists organizations as they adapt to the Government of Canada’s mandatory target for all new light-duty cars and passenger trucks to be zero-emission by 2035, and to provincial momentum such as B.C.'s EV charging expansion across the network.

“We are grateful to have found partners at all levels of government as we take bold action to become the world’s greenest airport. Not only will this critical funding support us as we work to the complete electrification of our airport operations, and as regional innovations like Harbour Air’s electric aircraft demonstrate what’s possible, but it will help us in our role supporting the mutual needs of our business partners related to climate action,” Vrooman continued.

These new EV Charging stations are planned to be installed by 2025, and will provide electricity to the YVR fleet, commercial and business partners’ vehicles, as well as passengers and the public, complementing BC Hydro’s expanding charging network in southern B.C. Currently, YVR provides 12 free electric vehicle charging stalls (Level Two) at its parking facilities, as well as one DC fast-charging stall.

This exciting announcement comes on the heels of the Province of BC’s Integrated Marketplace Initiative (IMI) pilot program in November 2022, a partnership between YVR and the Province of British Columbia to invest up to 11.5 million to develop made-in-BC clean-tech solutions for use at the airport, and related programs offering home and workplace charging rebates are accelerating adoption.

 

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New Kind of 'Solar' Cell Shows We Can Generate Electricity Even at Night

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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NREL’s Electric Vehicle Infrastructure Projection Tool Helps Utilities, Agencies, and Researchers Predict Hour-by-Hour Impact of Charging on the Grid

EVI-Pro Lite EV Load Forecasting helps utilities model EV charging infrastructure, grid load shapes, and resilient energy systems, factoring home, workplace, and public charging behavior to inform planning, capacity upgrades, and flexible demand strategies.

 

Key Points

A NREL tool projecting EV charging demand and load shapes to help utilities plan the grid and right-size infrastructure.

✅ Visualizes weekday/weekend EV load by charger type.

✅ Tests home, workplace, and public charging access scenarios.

✅ Supports utility planning, demand flexibility, and capacity upgrades.

 

As electric vehicles (EVs) continue to grow in popularity, utilities and community planners are increasingly focused on building resilient energy systems that can support the added electric load from EV charging, including a possible EV-driven demand increase across the grid.

But forecasting the best ways to adapt to increased EV charging can be a difficult task as EV adoption will challenge state power grids in diverse ways. Planners need to consider when consumers charge, how fast they charge, and where they charge, among other factors.

To support that effort, researchers at the National Renewable Energy Laboratory (NREL) have expanded the Electric Vehicle Infrastructure Projection (EVI-Pro) Lite tool with more analytic capabilities. EVI-Pro Lite is a simplified version of EVI-Pro, the more complex, original version of the tool developed by NREL and the California Energy Commission to inform detailed infrastructure requirements to support a growing EV fleet in California, where EVs bolster grid stability through coordinated planning.

EVI-Pro Lite’s estimated weekday electric load by charger type for El Paso, Texas, assuming a fleet of 10,000 plug-in electric vehicles, an average of 35 daily miles traveled, and 50% access to home charging, among other variables, as well as potential roles for vehicle-to-grid power in future scenarios. The order of the legend items matches the order of the series stacked in the chart.

Previously, the tool was limited to letting users estimate how many chargers and what kind of chargers a city, region, or state may need to support an influx of EVs. In the added online application, those same users can take it a step further to predict how that added EV charging will impact electricity demand, or load shapes, in their area at any given time and inform grid coordination for EV flexibility strategies.

“EV charging is going to look different across the country, depending on the prevalence of EVs, access to home charging, and the kind of chargers most used,” said Eric Wood, an NREL researcher who led model development. “Our expansion gives stakeholders—especially small- to medium-size electric utilities and co-ops—an easy way to analyze key factors for developing a flexible energy strategy that can respond to what’s happening on the ground.”

Tools to forecast EV loads have existed for some time, but Wood said that EVI-Pro Lite appeals to a wider audience, including planners tracking EVs' impact on utilities in many markets. The tool is a user-friendly, free online application that displays a clear graphic of daily projected electric loads from EV charging for regions across the country.

After selecting a U.S. metropolitan area and entering the number of EVs in the light-duty fleet, users can change a range of variables to see how they affect electricity demand on a typical weekday or weekend. Reducing access to home charging by half, for example, results in higher electric loads earlier in the day, although energy storage and mobile charging can help moderate peaks in some cases. That is because under such a scenario, EV owners might rely more on public or workplace charging instead of plugging in at home later in the evening or at night.

“Our goal with the lite version of EVI-Pro is to make estimating loads across thousands of scenarios fast and intuitive,” Wood said. “And if utilities or stakeholders want to take that analysis even deeper, our team at NREL can fill that gap through partnership agreements, too. The full version of EVI-Pro can be tailored to develop detailed studies for individual planners, agencies, or utilities.”

 

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