NREL Inventiveness Sets New Record for Patent Activity
For Greg Glatzmaier, the road between innovation and implementation runs along a dusty stretch of highway about a dozen miles south of Boulder City, Nevada, where his patented idea could solve an industry problem. The destination for his idea is Nevada Solar One, an outpost in the desert where 186,000 parabolic shaped mirrors tilt to capture the sun’s rays.
Greg Glatzmaier tests the high-temperature thermal/mechanical stability of sealants that are being used in equipment installed at the Nevada Solar One power plant. The process reduces trace levels of hydrogen in the power plant and maintains its original design efficiency and power production. Photo by Dennis Schroeder, NREL
“When the plant first opened, there was nothing around it but open desert with mountains to the west and east,” said Glatzmaier, a senior engineer in the Thermal Energy Science and Technologies group at the National Renewable Energy Laboratory (NREL). “The only other landscape feature is a dry lakebed north of the plant.”
Since Nevada Solar One began operations in the summer of 2007, other utility-scale solar power plants have opened in that lakebed. Nevada Solar One is the only concentrating solar power (CSP) plant in the region, however, and the technology faces a unique set of challenges.
The CSP facility uses concentrated beams of sunlight to heat a fluid flowing through 20,000 tubes to as high as 752 degrees Fahrenheit. The process creates steam to spin a turbine that powers a generator and produces electricity. Over time, however, the heat transfer fluid begins to break down and form hydrogen, which reduces the effectiveness of the process. Tiny metal pellets in the tubes absorb the hydrogen, but after about seven years they become saturated and cannot be removed and replaced. Glatzmaier developed a method to address the hydrogen problem.
“To try to go in individually and address the situation for each tube is not really practical,” Glatzmaier said. “So, the method that I’ve developed, and what’s in that patent, and what this project has been all about, is to reduce and control the level of hydrogen that’s in the heat transfer fluid.”
NREL applied for a patent on Glatzmaier’s invention in the fall of 2017. The U.S. Patent and Trademark Office last May granted patent protection to what is simply called “Hydrogen sensing and separation.”
Laboratory Filed 188 Patent Applications
Glatzmaier’s patent was merely one of the 40 U.S. patents issued to NREL during fiscal 2020, a bump from the 32 issued during the prior fiscal year. Of the 269 disclosures filed with the laboratory’s Technology Transfer Office as the first step toward either patent or copyright protection, 153 fell in the category of a record of invention and 116 in the area of software.
“We continue to see strong engagement from researchers who submit their ideas for evaluation, with especially strong growth in software,” said Anne Miller, director of NREL’s Technology Transfer Office. “It’s great to see such growth because it tells us that the outreach to the lab to get people to report their innovations and work with us in getting them protected and deployed means that it’s working, that people know who to contact. Hopefully, it means that they have some confidence in our ability to be helpful and steer them in the right direction.”
Anne Miller, director of NREL’s Technology Transfer Office, speaks to laboratory employees at a 2019 event. Photo by Werner Slocum, NREL.
NREL filed 188 patent applications in FY20, up from 124 the year before.
Lance Wheeler, a research scientist at NREL, has about a dozen patent applications in the pipeline tied to the discovery several years ago of a way to turn windows into solar cells. The technology relies on perovskite solar cells that enable the glass to darken and generate electricity, and also switch back to a clear pane. The most recent patent approved, for “Energy-harvesting chromogenic devices,” was granted in November, or almost four years after the provisional application was filed.
“It’s much different than writing a paper because you can write a paper and get it published within months,” said Wheeler, who shares credit on the patent with colleagues Joey Luther, Jeffrey Christians, and Joe Berry. “You’ll never get a patent awarded in months. It’s usually at least a year, and three is not crazy.”
Buildings across the United States account for nearly two-thirds of energy used, so the notion of using these “smart windows” to take advantage of sunlight could bring that energy consumption down.
The patents issued so far for Wheeler’s dynamic photovoltaic windows cover foundational aspects of the technology and sprang from the initial research. A series of patent applications followed.
“When you write the first patent application, you don’t know everything,” Wheeler said. “As you learn more and especially for very particular market needs, or what a product might look like, you learn what’s important and you continue to protect the things that are working. Then you make more discoveries, and you patent more things, but they’re all aligned in the same area.”
Perovskite Composition Earns Patent Protection
Alignment, as it turns out, is a key part of making perovskites most effective in capturing the sun’s energy. Unlike widely used silicon, which is a naturally occurring mineral, perovskites used in solar cells are grown through chemistry. The crystalline structure of perovskites has proven exceptionally efficient at converting sunlight to electricity.
NREL researchers have explored possible combinations for perovskite formulas to find the best. That work resulted in a patent issued in April 2020 for “Oriented perovskite crystals and methods for making the same.” The process begins with a small crystal that’s attached to another crystal and then another and on and on. The crystals are also oriented in the same direction. Kai Zhu, a senior scientist and one of the inventors, uses bricklaying as an analogy.
“You lay one layer down, you put one next to another, you align them perfectly,” he said. “You have to do this in order to build a very large wall. But if you have some randomness in it, your wall will collapse.”
The patent, which covers the composition of the perovskite, was issued to Zhu, Berry, and Donghoe Kim of NREL and to a scientist in Japan. NREL filed the patent application in 2017. Compared to a perovskite solar cell made of crystals allowed to grow randomly instead of in a specific orientation, the NREL-developed composition has been proven to have fewer defects and able to move charge carriers quickly. The result is a perovskite solar cell capable of reaching the highest efficiency.
“This represents the current best performing perovskite composition for the single-junction solar cell,” Zhu said.
Software Filings Reach New Record
NREL’s Technology Transfer Office received 116 software record (SWR) disclosures in fiscal 2020, establishing a new record and marking a big increase from 72 the prior year. The growth in submittals is partly due to more software being developed and authorized for free open-source release. One software record approved for closed-source licensing last year and now available for commercial users is the Electric Vehicle Infrastructure Projection tool, or EVI-Pro. A simplified, open-source version, known as EVI-Pro Lite, also has been released.
The core of EVI-Pro allows users to forecast the demand for electric vehicle charging infrastructure in a particular area. The predictive nature of the software also enables users to determine in advance how an influx of electric vehicles might affect the grid and energy demand. EVI-Pro relies on real-world information.
Eric Wood, the NREL researcher who oversaw the development of EVI-Pro, said it is not enough to simply consider how many charging stations were installed in an area previously and make an educated guess based on that information.
“That misses some key points,” he said. “The vehicle technology is evolving. The charging technology is evolving. And the behavior of individuals that own these vehicles is evolving.”
Early adopters of electric vehicles could charge them at home, in their garage. As the market expands, Wood said, people living in apartments or who have to park on the street need to have a place to plug in.
“The role of public charging infrastructure is going to continue to elevate as the market grows,” he said. “Continuing to develop the software with an eye on reflecting the latest situation in the market is one of the challenges that we face, so keeping EVI-Pro relevant and current is important.”
From the Laboratory to the Outside World
For Glatzmaier, the journey to see how well his invention could perform at isolating and removing hydrogen from the concentrating solar power plant was not a quick one. Grounded from flying because of the pandemic, last year he made four trips to the Nevada site by car. Each trip took about 13 hours one way.
Scientists typically keep close to their laboratory space, with companies able to license ideas that sprang from the inventive minds at NREL. Often, with license in hand, a company will conduct research using its own people. In Glatzmaier’s case, Nevada Solar One signed cooperative research and development agreements that have kept the scientist and company working closely together since 2015.
Glatzmaier initially planned to address the hydrogen buildup using two processes: one to measure the amount of the gas, and a second to extract it. Laboratory-scale tests showed his ideas would work, but he still expected some hesitation from company executives when it came time to trying out the devices on a much larger scale.
“I was thinking, they’re going to be very reluctant because companies tend to not want to make changes to their power plants once they are up and running,” he said. So he proposed installing the mechanism to only measure hydrogen buildup. Instead, the company wanted him to move ahead and tackle both problems at once. From the initial idea to installation has been a long road, but it does not end in Nevada.
Glatzmaier said 80 concentrating solar power plants exist around the world, and talks are in their final stages to license the technology for its use in these plants.
Learn more about licensing NREL-developed technologies.
—Wayne Hicks
Article courtesy of the NREL, The U.S. Department of Energy.
Yes, Virginia, there are still great EV lease deals to be had in December. Hyundai continues to offer EV leases for under $200 a month, and the BMW i4 can be leased for the same price it was when the federal tax credit was still in effect. With 2025 models disappearing fast, this might be your last shot to snag a year-end lease deal on an EV. Check out the standouts below.
2025 Hyundai IONIQ 6 lease from $189/month
The 2025 Hyundai IONIQ 6 remains a fantastic deal: the IONIQ 6 SE Standard Range can be leased from $189 per month for 24 months with a $3,999 due at signing (12,000 miles per year). Its effective cost is just $356, and this month’s IONIQ 6 SE lease includes $13,000 in lease cash that you can’t get elsewhere. The offer is good until January 2.
Our friends at CarsDirect report that the SEL trim is actually a better deal at $239 with $3,999 at signing, with an effective cost of $406. Even though its MSRP is over $7,700 higher than the SE, it’s just $50 more a month to lease. The SE Standard Range has a range of 240 miles, whereas other styles have a range of up to 342.
As usual, offers vary according to location, and this is a regional offer based in California.
Click here to find a local dealer that may have the Hyundai IONIQ 6 in stock. –trusted affiliate link
2025 Hyundai IONIQ 5 lease from $189/month
Believe it or not, the 2025 Hyundai IONIQ 5 SE Standard Range RWD, which starts at $44,200, can still be leased through January 2 for $189 a month for 36 months (10,000 miles per year) with $3,999 due at signing. That works out to an effective monthly cost of about $300.
The IONIQ 5 SE RWD Standard Range offers an EPA-estimated 245 miles of range, and this particular offer is available in the Los Angeles and greater California metro areas (I’ve seen it at dealers in Carlsbad and Santa Monica, for example). And if you’re tempted by an upgrade, the SEL RWD trim is just $50 more per month under the same terms.
Click here to find a local dealer that may have the Hyundai IONIQ 5 in stock. –trusted affiliate link
2026 Subaru Solterra 5 lease from $299/month
In several regions, the 2026 Subaru Solterra Premium can be leased for $299 per month for 36 months, with a down payment of $2,799 due at signing, resulting in an effective monthly cost of $377. That makes it $95 per month cheaper to lease than a 2026 Toyota bZ, which is $472. (These figures are for California.)
A $500 loyalty discount is available to returning lessees. It doesn’t require a trade-in and can be transferred to household members. If you factor in the loyalty discount, the Solterra’s effective cost drops to $363. The offer ends January 2.
Subaru’s advertised lease prices are based on 10,000 miles a year, but that’s changeable. However, a larger mileage allowance will lower the EV’s residual value, making it more expensive.
Click here to find a local dealer that may have the Subaru Solterra in stock. –trusted affiliate link
2025 Ford Mustang Mach-E from $219/month
The 2025 Ford Mustang Mach-E can still be leased for $219 per month for 24 months with a $4,499 due at signing (10,500 miles per year) until January 5. In this configuration, the Mach-E has a range of up to 300 miles.
This is a regional offer for California, but the great deal isn’t limited to just that state. The example includes a total of $8,750 in lease cash; however, the catch is that if you opt for the lease cash, you have to decline the free home charger with installation or Ford’s $2,000 public charging credit.
Click here to find a local dealer that may have the Ford Mustang Mach-E in stock. –trusted affiliate link
2025 BMW i4 from $399/month
Remarkably, the 2025 BMW i4 is still leasing for the same price as it was when the federal tax credit was still in effect. In many regions, the eDrive40 can be leased for $399 for 36 months with $4,999 due at signing (10,000 miles per year). Its effective cost is just $538 per month, which is impressive when you consider that the i4’s retail price is over $60,000.
The offer, available until January 2, includes a $7,500 lease credit, and a $1,000 loyalty discount is also available for returning lessees. With the loyalty bonus, the i4’s effective monthly cost could be as low as $510.
In this configuration, the i4 has an EPA-estimated range of 318 miles. As before, BMW’s lease includes two years or 1,000 kWh of free charging with Electrify America.
Click here to find a local dealer that may have the BMW i4 in stock. –trusted affiliate link
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Kia now has one of the most affordable electric SUVs in Canada. The EV5 is now on sale, starting at $43,495 CAD.
Kia opens EV5 orders in Canada
The EV5 is the electric SUV we want in the US, but we will likely never see it. After opening online orders on December 4, Kia revealed prices for the entire 2027 EV5 lineup.
Surprisingly, buyers can choose from nine trims, with prices ranging from $43,495 CAD for the base Light model to $61,495 CAD for the flagship AWD GT-Line Limited edition.
Outside of the Light trim, all EV5 variants are offered with front-wheel or all-wheel drive. Upgrading to AWD costs an extra $2,500 CAD.
Likewise, all EV5 trims, except the Light variant, are powered by an 81.4 kWh battery, providing up to 460 km (285 miles) of driving range. The entry-level Light uses a 60.4 kWh battery, good for a driving range of up to 335 km (208 miles).
All EV5 models come with a built-in NACS port, nearly 30″ of screen space in a curved panoramic display, heated front seats, and Kia Connect with OTA updates.
The interior features Kia’s new Connect Car Navigation (CCNC) infotainment system with dual 12.3″ driver display and touchscreen navigation screens, plus a 5″ climate control screen. The setup includes wireless Android Auto and Apple CarPlay capabilities.
Kia grouped the EV5 trims into tiers based on what buyers are looking for. As expected, the Light FWD trim is the best value for your money.
For those looking for a little more driving range, the Wind FWD offers up to 460 km range, while the Wind AWD is built for Canada’s harsh winters. Both include a heat pump as standard.
2027 Kia EV5 prices and range by trim
Kia said the EV5 Land Rover trim is the best option if you’re looking for a little more out of the interior. The Land Rover trim adds a memory function to the driver’s seat, a heated steering wheel, a panoramic sunroof, a smart power tailgate, and 19″ wheels.
And then there’s the EV5 GT-Line, for those looking for added performance, a sporty new look inside and out, and driver-assistance features like lane-change assist.
| 2027 Kia EV5 trim | Starting Price (CAD) (FWD/AWD) | Battery | Target Range (FWD/ AWD) | Selling Points |
| Light traction | $43,495 | 60.4 kWh | 335 km | Entry-level price, standard battery life |
| Wind | $47,495 / $49,995 | 81.4 kWh | 460 km / 415 km | Long-life battery, heat pump |
| Land | $49,995 / $52,495 | 81.4 kWh | 460 km / 415 km | Panoramic roof, smart tailgate, V2L |
| GT-Line | $55,495 / $57,995 | 81.4 kWh | 460 km / 410 km | HDA2, FCA 2, ventilated seats, sporty style |
| GT-Line Limited | $58,995 / $61,495 | 81.4 kWh | 460 km / 410 km | Head-up display, RSPA 2, Harman Kardon, digital key |
The EV5 is now available to order in Canada, outside of the entry-level FWD Light variant, which is scheduled for the fourth quarter of 2026.
Despite the wait, Kia claimed the 2027 EV5 is going on sale as “Canada’s most affordable electric SUV,” starting $43,495.
For those in the US, don’t get your hopes up. Kia said the EV5 will be sold exclusively in Canada for the North American market.
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Multiple outlets are reporting on Donald Trump’s apparent effort to change US regulations to bring tiny Japanese kei cars to the US, but there’s little reason to think that effort will be serious.
Convicted felon Donald Trump has directed former reality TV contestant Sean Duffy to examine how kei cars, a category of Japanese microcars, could be brought to the US, calling them “cute.”
The statement was made yesterday at the announcement of a fuel efficiency rollback, which will raise your fuel costs by $23 billion and is explicitly intended to make cars bigger and less efficient.
And so, simply by reading the preceding two sentences, you should understand how unserious this effort is. At the same moment that a new proposal was announced to reduce fuel efficiency targets by a third, the same person who is trying to increase your fuel costs and make cars bigger and less efficient apparently also wants tiny efficient vehicles in the US. How does that make sense?
If Trump did know anything about how the auto industry works, he would not speak about making cars smaller at an event to announce rules explicitly intended towards making cars bigger – these are not compatible thoughts, and betray a lack of understanding of the reason he was even in the room to begin with.
Further, in addition to yesterday’s effort to remove CAFE rules, the EPA is currently trying to roll back President Biden’s improved exhaust standards which included a recognition of vehicle sizes becoming too large and a desire to reduce SUV/truck market share, and Mr. Trump is trying to place a 15% tariff on all Japanese goods, meaning higher prices for Americans if these cars were to come to the US.
Thinking more deeply about the reason why Mr. Trump might have mentioned kei cars to begin with, it is likely related to his recent trip to Japan. He went to Japan to negotiate an end to the unwise tariffs that he himself announced on one of America’s closest trading partners (despite that he does not have the Constitutional authority to apply them).
During that trip, he seems to have seen the tiny cars for the first time (or the first time he can remember, given his senility), and been enamored by them. So, he said yesterday (while flanked by Duffy, who showed apparent surprise as the flippant statement came out of his mouth):
“They’re very small, they’re really cute, and I said ‘How would that do in this country?’… But we’re not allowed to make them in this country and I think you’re gonna do very well with those cars, so we’re gonna approve those cars.”
-Donald Trump, upon witnessing a type of vehicle he should have known of by now, having spent 79 years globetrotting around this Earth, so how can he just be seeing this for the first time except if he’s senile.
Now, technically, here he says he wants the US to build the cars here, rather than import them from Japan. Kei cars are very popular in Japan, but rarer in other countries. Some other countries do have their own small cars similar to kei cars (for example, China’s 115-inch Wuling Mini EV), but Japan is where these vehicles have traditionally held the highest share.
There are various reasons for this, but one of them is due to the high density of Japanese cities. Kei cars are very space efficient for cities that are obsessed with space efficiency in a way that simply is not the case in the US.
Japanese cities are also connected by efficient, fast and reasonably-priced bullet trains, so getting from one side of the country to the other is easy to do without having to stuff the whole family into a vehicle that is under 134 inches long. And the regulatory regime in Japan has been built around kei cars, giving them certain advantages to incentivize their use.
Meanwhile, it’s nigh-impossible to convince any manufacturer to even build a sedan, hatchback or small SUV for the US, or to build any small-displacement vehicle. So this would require a massive change in consumer tastes, which of course manufacturers haven’t been particularly interested in leading, given they’ve been pushing SUVs for decades now.
That said, one of the reasons manufacturers have pushed SUVs is due to regulations which treat them more favorably than smaller vehicles. If those regulations were changed – and that’s what Trump and Duffy have floated – it could open the doors for smaller cars.
But there’s little reason to think either of them are serious about this, given the amount of work that would have to be done to change regulations, and given the work they’re currently doing to change the regulations in the exact opposite direction.
At a minimum, Federal Motor Vehicle Safety Standards (FMVSS) would have to change significantly. This is the set of rules governing safety requirements for all motor vehicles, with requirements for various vehicle classes that have been built and tweaked over time. And these requirements are tailored to how we build roads, infrastructure, and signage in this country, which differs from how these things are done in Japan or Europe or China.
While an effort to harmonize FMVSS and infrastructure standards with other countries would be admirable and has been desired for a long time in the auto industry, the enormity of the undertaking is much greater than a single flippant comment (from someone who probably doesn’t even know what FMVSS stands for).
And in fact, US regulations already do allow for exemptions to many regulations for low volume vehicles. So it already is possible to build small cars in the US, at least if you build fewer than 2,500 per year. So a startup focused on tiny cars could already get started here, and could have been selling kei-like cars all along (say, TELO, for example… but even they are offering a 152in truck, a foot and a half longer than a kei car, and with 500hp, about 8x more than a kei car).
But why haven’t manufacturers made these cars already, then?
Again, going back to the above, regulations and manufacturers have both pushed vehicle sizes larger and larger, and consumer tastes have happily followed, with US drivers wasting more and more money and space on larger and more polluting vehicles.
There is a perception that these larger vehicles are safer (even though they aren’t, and we are currently nearing an all-time high in pedestrian fatalities), so if vehicles keep getting bigger as a result of regulations allowing them to, US consumers will be afraid to buy a car that’s even smaller than the smallest available today. And yesterday’s proposed rule explicitly claims, in its third paragraph, that smaller cars are undesirable for this reason (without recognizing that it’s actually the larger cars that are responsible this problem).
Kei cars are also typically less powerful than the average American car, which even Duffy claimed himself, saying “are they going to work on the freeways? Probably not” (even though most vehicles use about ~20hp to sustain highway speeds).
And given that the American consumer has been sold the dream of buying a vehicle not for what it will be used for, but for every conceivable purpose they could ever dream of using any vehicle for, it seems unlikely that many will line up for a car that they have been told can’t even get on the freeway.
After all, Smart cars did exist in the US, as have various other small vehicles, but they’ve always been marginalized, because the whole culture, manufacturing base and regulatory regime around cars and roads has been built to advantage large vehicles, not small ones.
So despite that microcar enthusiasts like myself want to see tiny cars in the US, the idea that manufacturers will suddenly scale up production of these vehicles in the US seems extremely unlikely without a concerted effort to show that they are welcome here and that there will be a market for them.
And I’m not convinced that concerted effort will be undertaken by people who are currently undertaking a concerted effort to do the exact opposite, and by someone who seems to change his mind with whatever stupid nonsense he happened to see 12 seconds ago on fox. Companies don’t build manufacturing facilities based on the whims of an idiot, they do so with clear and consistent policy that they can be certain will last through a vehicle model’s development and sales timeline (typically around ~14 years from start of development to end of production).
So I don’t think this is going to happen. Prove me wrong, I will be happy to eat crow here.
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Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.
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