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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.

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ENGWE Engine Pro 2.0 e-bike at exclusive new $750 low, Anker eufy S220 solar cam $65, Linkind smart solar spotlights from $23, more

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July 31, 2025

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ENGWE Engine Pro 2.0 e-bike at exclusive new 0 low, Anker eufy S220 solar cam , Linkind smart solar spotlights from , more

Leading today’s pack of Green Deals is an exclusive 50% discount for our readers on the ENGWE Engine Pro 2.0 Folding e-bike at a new $749.50 low. Right behind it we have Anker’s eufy SoloCam S220 Solar Security Camera starting at $65, with some multi-pack discounts also available, as well as multi-packs of Linkind’s Smart Solar Spotlights starting from $23. From there we have a 3-in-1 tool bundle with replacement parts from Worx, a 60V 610 CFM cordless leaf blower from Greenworks, and more waiting for you below. Plus, all the hangover savings at the bottom of the page, like yesterday’s ECOVACS Goat RTK robot lawn mower low price, Rad Power’s RadWagon 4 cargo e-bike discount, and more.

Head below for other New Green Deals we’ve found today and, of course, Electrek’s best EV buying and leasing deals. Also, check out the new Electrek Tesla Shop for the best deals on Tesla accessories.

Commute up to 68 miles with exclusive 50% savings on ENGWE’s Engine Pro 2.0 folding e-bike at a new $749.50 low

We’ve secured an exclusive and budget-friendly deal from Wellbots for our readers on the ENGWE Engine PRO 2.0 Folding e-bike at $749.50 shipped, after using the exclusive promo code 9TO5ENGWE50 at checkout for 50% off. This model would normally run you $1,499 here, which we’ve seen discounted as low as $1,149 from the brand over the last year. That price is getting strong-armed out of the way with this exclusive deal that gives you a 50% markdown, putting nearly $750 back into your pocket at the best new price we have tracked.

A great alternative option for riders who want a reliable means to get through their commutes without shelling out $1,000 or more on other brands, the ENGWE Engine Pro 2.0 e-bike is a folding model that saves on space while also providing some significant travel support. The 750W rear hub motor peaks at 1,200W and comes paired with a removable 16Ah battery for up to 68 miles of pedal-assisted travel (five levels supported by a torque sensor) at up to 20 to 28 MPH top speeds, depending on what your local laws allow. Of course, you’ll have the option for pure electric travel via the throttle, though keep in mind this reduces the mileage to around 30 miles on one full charge.

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For the low price you’re getting on ENGWE’s Engine Pro 2.0, you’ll be scoring some solid features, including hydraulic disc brakes for greater stopping power, puncture-resistant all-terrain fat tires so you don’t have to fear what you may ride over, and an 8-speed Shimano derailleur for versatile pedaling options. That’s not all, as you’ll also be getting a rear cargo rack, a full suspension system, and a smart LCD screen for performance data and setting adjustments – plus, the whole thing weighs in at 70 pounds, so it’s manageable regardless of your rural/suburban/urban environment.

rain falling onto Anker eufy SoloCam S220 solar security camera

Upgrade your home security with Anker’s solar-powered eufy SoloCam S220 camera at $65

Anker is offering its eufy SoloCam S220 Solar Security Camera at $64.99 shipped, after using the on-page promo code at checkout for $35 off the price, which is beating out Amazon’s pricing by $5. Coming down off its $100 full price tag while the savings last, this model has been regularly seen dropping to $70 and more recently going lower to $65 over the last handful of months, only beaten out by the $62 low we first saw appearing during Prime Day at the top of the month. You’re looking at 35% markdown while the savings last, giving you the second-best price we have tracked if you missed out on the one-time Prime Day low. You’ll also find the camera’s multi-pack options starting from $129.99 shipped here.

If you want to learn more about this solar-powered security device, be sure to check out our original coverage of this deal here.

Daytime and Nighttime differences with Linkind's smart solar spotlights lining walkway

Save up to 34% on multi-packs of Linkind’s Smart Solar Spotlights starting from $23

By way of its official Amazon storefront, Linkind is offering its Smart Solar Spotlights starting at $22.99 shipped for a 2-pack. The price is coming down from its $35 tag, with them having spent a significant portion of recent months at $24, with some falls to $23 (including during Prime Day) and one earlier drop to the $21 low back in April. You’re looking at a 34% markdown here that cuts $12 off the tag for the second-best price we have tracked, landing just $2 above the all-time low. You’ll also find its larger bundles benefitting from discounts, with the 4-pack down at its second-best price of $48.99 shipped, after clipping the on-page 30% off coupon, while its 8-pack is down at a $90.98 low.

If you want to learn more about this outdoor lighting device, be sure to check out our original coverage of this deal here.

man trimming around tree trunk with Worx GT revolution 3-in-1 string trimmer/edger/mini-mower

Pick up the Worx GT Revolution 20V 12-inch string trimmer/edger/mini-mower with spare parts at $83 (2025 low)

Amazon is offering the Worx GT Revolution 20V 12-inch String Trimmer/Edger/Mini-Mower kit that comes with a 2.0Ah battery, 2A charger, three replacement spools, a spool holder, and replacement edger wheels for $82.99 shipped. The combination of the tool and battery alone goes for $130 at full price directly from the brand’s website, where it’s currently priced, but we’ve been seeing this larger bundle package keep down to $100 for much of the time since late March. While we have seen it drop lower in the past, the additional $17 savings from its recent going rate is the best price we have tracked over the last 12 months, even beating out its Prime Day pricing by $2.

If you want to learn more about this 3-in-1 tool, be sure to check out our original coverage of the deal here.

man clearing large pile of leaves in yard with greenworks 60V 610 CFM cordless leaf blower

Clear out your yard with up to 610 CFM air flow through this 60V Greenworks cordless leaf blower at $142

Amazon is offering the Greenworks 60V 610 CFM Cordless Leaf Blower at $142.49 shipped. Normally fetching $200 directly from the brand’s website, where this model is priced $8 higher, we’ve been seeing it keep to $180 in full at Amazon since March, with discounts dropping costs lower between $160 and $140 on average. The lowest we’ve seen this model fall was to a $135 rate on the last of Prime Day’s 4-day event, with the deal today matching the event’s first three days of pricing. You’re looking at the third-lowest price we have tracked, saving you $58 off the MSRP and landing just $7 above the all-time low.

If you want to learn more about this 60V blower, be sure to check out our original coverage of this deal here.

Best Summer EV deals!

Best new Green Deals landing this week

The savings this week are also continuing to a collection of other markdowns. To the same tune as the offers above, these all help you take a more energy-conscious approach to your routine. Winter means you can lock in even better off-season price cuts on electric tools for the lawn while saving on EVs and tons of other gear.

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BYD cuts Yuan Up EV prices to just $10,500 with a new ‘Pilot’ model

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July 31, 2025

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BYD cuts Yuan Up EV prices to just ,500 with a new 'Pilot' model

BYD-Yuan-Up-prices

To celebrate 1.5 million in sales, BYD launched a new Yuan Up “Pilot” EV edition on Thursday with prices now starting at under $10,500.

BYD launches new Yuan Up Pilot with lower prices

The new base model is priced at 74,800 yuan ($11,500), which is about 25% cheaper than the current Yuan Up lineup. Previously, Yuan Up prices ranged from 99,800 yuan ($14,000) to 119,800 yuan ($16,700).

Powered by a 32 kWh BYD Blade battery pack, the new Yuan Up Pilot edition has a CLTC driving range of up to 301 km (187 miles). The other three trims have a range of 401 km (249 miles) from a 45.12 kWh battery.

Given the lower prices, BYD had to cut back somewhere. And it’s not just in range. The lower-priced Yuan Up does not include BYD’s “God’s Eye” smart driving system.

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Earlier this year, BYD upgraded most of its vehicles with the smart driving tech at no extra charge. The other three trims include the “C” version, or the lowest level of autonomy.

BYD-Yuan-Up-prices
BYD launches new lower-priced Yuan Up Pilot edition (Source: BYD)

More expensive vehicles, like those in the BYD Denza and Yangwang series, are equipped with more advanced “A” and “B” systems.

Inside, the cabin appears similar to other models, featuring a 10.1″ floating central infotainment screen and an 8.8″ driver display screen. It still features BYD’s DiLink 50 smart cockpit system, which includes voice control and connectivity support.

BYD-Yuan-Up-interior
BYD Yuan Up EV interior (Source: BYD)

Measuring 4,310 mm in length, 1,830 mm in width, and 1,675 mm in height, the Pilot edition is the same size as other BYD Yuan Up models. That’s about the size of a Hyundai Kona.

BYD-Yuan-Up-prices
BYD launches new lower-priced Yuan Up Pilot edition (Source: BYD)

According to data from CnEVPost, sales of BYD’s Yuan series fell 21% in May (31,711 units) and 29% in June (25,727 units) compared to the same period last year.

Given BYD’s aggressive push for smart tech, the new base Yuan Up could hint that a change in the Chinese automaker’s playbook is in the works. In overseas markets, the Yuan Up is sold as the Atto 2.

Last week, BYD launched its “high-energy super SUV,” the Sealion 06 EV, priced from 139,800 yuan ($21,000).

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Tesla’s new Model Y Performance spotted testing

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July 31, 2025

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Tesla's new Model Y Performance spotted testing

Tesla Model Y Performance Juniper prototype hero

A Tesla Model Y Performance prototype was spotted testing in California ahead of its launch in the US, which is expected soon.

Tesla launched the refreshed Model Y, often referred to as ‘Juniper’, in January 2025.

However, as it often does with design refreshes, Tesla didn’t launch the performance version of the best-selling electric SUV with the broader refresh.

The automaker stopped taking orders for Model Y Performance, but we have been expecting the variant to make a comeback under the Juniper design by the end of the year.

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While cycling near Tesla’s Palo Alto engineering headquarters, an Electrek reader spotted a Tesla Model Y prototype in camouflage, which we quickly identified as a Model Y Performance with the Juniper design refresh:

What makes us think this is a Model Y Performance? The wheels look like Plaid 20″ wheels, which are generally reserved for performance versions.

If we zoom in, we can also see that the Model Y appears to feature bigger red brake calipers – another feature that Tesla only offers on performance versions of its vehicles.

Before the refresh, the Model Y Performance achieved an EPA-estimated range of 277–285 miles (446-459 km), depending on the wheel configuration.

It accelerated from 0 to 60 mph in 3.5 seconds.

The new Model Y Performance with the Juniper refresh is expected to slightly improve on those metrics while also bringing some of the other changes introduced in the design refresh, such as a light bar, ambient interior lighting, a rear screen, and more.

Tesla previously sold the Model Y Performance for a base price of $51,500 in the US.

The new version of the vehicle is expected to launch in the coming months.

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