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Here are three standout rooftop solar trends that emerged in 2022 – and how they impact consumers who want to switch to clean energy.

EnergySage has just released its 16th Solar & Storage Marketplace Report, and the online comparison solar and storage shopping marketplace shared it with Electrek for an exclusive first look.

Its calendar year 2022 report – which can be downloaded for free – looks at trends in rooftop solar pricing, equipment, marketplace share, and financing. The report draws from millions of transaction-level data points generated by quotes sent to homeowners in 2022 from solar companies in 41 states and Washington, D.C.

Below are three key insights that EnergySage identified in this new report. Electrek spoke with Spencer Fields, head of insights at EnergySage, and one of the report’s authors, about what those three takeaways mean for consumers going forward.

Solar prices rose over 6% year-over-year

Ongoing equipment supply constraints continue to impact pricing, as the quoted price of solar on EnergySage has increased to $2.85 per watt, a 6.7% increase since the lowest price in early 2021. The installed cost of energy storage is also up, increasing by $50 per kWh stored, or 3.9%, in 2022.

Spencer Fields’ Take: The solar market was affected by inflation like many other consumer goods were in 2022. Equipment supply constraints are certainly affecting the market, and that impacts the availability of raw materials or assembled products that are installed on a consumer’s home. Not only was it harder to get supply, but it also took longer to do so. So that contributed to the price of solar in 2022.

But on the positive side, solar prices increased at a slower pace than other consumer goods, and particularly electricity. Plus, the Inflation Reduction Act was enacted, which bumped the tax credit up to 30%, so it mitigates the inflation rate.

All of this highlights the importance of shopping around for rooftop solar. It’s important that consumers get at least three quotes to get the best price from a vendor they trust.

Residential market-share shifts for solar panel brands

In the second half of 2022, Qcells overtook REC as the most frequently quoted panel brand on EnergySage, with more than 25% of all quotes including Qcells panels. Additionally, as installers looked to secure their supply during shortages in 2022, the share of quotes represented by the top three brands on EnergySage continued to drop – from 66% in 2021 to 58% in 2022. Enphase remained the most quoted inverter and battery storage brand. (Editor’s note: Enphase is based in California, and its inverters are made in Mexico.)

Spencer Fields’ Take: A big part of the push of the Inflation Reduction Act, as well as tariffs on solar panels manufactured abroad, is to bring more manufacturing to the US. Qcells has a huge manufacturing expansion going on in Georgia, and it began the process of building out manufacturing capacity a few years ago, so they’re producing US-made solar panels.

Consumers are more aware of where their products are being made. Qcells is the player with the largest market share in the US. It has a robust supply chain in the US.

Installer brand loyalty continues to increase

In the second half of 2022, 59% of installers offered only a single inverter brand, the highest level of brand loyalty since EnergySage began tracking this information in 2014. Similarly, over one-third of installers only worked with a single solar panel brand in the second half of 2022, the highest level since 2015.

Spencer Fields’ Take: This finding belies the importance of getting multiple quotes since companies are working with single brands. That way consumers have access to multiple brands. One thing that’s unique to the solar industry is that most manufacturers are not household names – it’s not like makes of cars. So that makes it much more incumbent on the homeowners to do that little bit of extra research.

Consumers may be less likely to find installers with multiple packages. When it comes to inverters, for example, installers may be very familiar with that particular technology. So it should give consumers confidence that the installer is choosing to work closely with an individual brand and that consumers are paying appropriately for higher-quality equipment.

Photo: EnergySage

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World’s largest EV maker unveils new sodium battery electric motorbikes

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World's largest EV maker unveils new sodium battery electric motorbikes

Yadea, which has claimed the title of the world’s largest electric vehicle maker for seven years running, has just announced a new electric motorbike powered by the company’s innovative HuaYu sodium-ion battery technology.

Yadea has long dominated the electric two-wheeler and three-wheeler market globally, but has generally relied on both lithium-ion and lead acid batteries to power its vehicles in different markets.

The newly unveiled electric scooter uses Yadea’s recently introduced sodium battery technology, offering what the company says is outstanding performance in range, charging speed, and safety. Using the HuaYu Sodium Superfast Charging Ecosystem presented by Yadea, the battery can reach 80% charge in just 15 minutes, providing greater convenience for riders.

Yadea’s sodium battery has successfully passed more than 20 safety tests, many focusing on its resistance to fire and explosions under extreme conditions like punctures and compression.

Yadea’s new sodium battery offers an energy density of 145 Wh/kg and a lifespan of up to 1,500 cycles at room temperature, with the company rating it for a five-year useful lifespan. It also includes a three-year warranty for added assurance.

With excellent low-temperature capabilities, the battery retains over 92% of its discharge capacity at -20°C, making it well-suited for colder climates.

Sodium batteries present major advantages

Most electric vehicles used in the West, especially electric two-wheelers, rely on lithium-ion batteries for their high energy density. But sodium-ion batteries offer many benefits over traditional lithium-ion batteries.

Sodium is an abundant element on the planet and is easily accessible, unlike lithium, which is concentrated in specific regions and often expensive to extract. This abundance can make sodium-ion batteries cheaper to produce, reducing costs for EV manufacturers and potentially making electric vehicles more affordable.

Lithium mining also has environmental challenges, such as water depletion and habitat destruction. Sodium, on the other hand, can be sourced from seawater or common salts, offering a more sustainable and environmentally friendly option.

Sodium-ion batteries are less prone to overheating and thermal runaway compared to lithium-ion batteries. This makes them inherently safer for electric vehicles, reducing the risk of fires and improving consumer confidence in EV technology.

Sodium-ion batteries perform better than lithium-ion in cold climates. Lithium-ion batteries struggle with capacity retention in freezing conditions, but sodium batteries maintain efficiency, making them ideal for EVs in colder regions.

Sodium batteries still have challenges to overcome

While sodium-ion batteries are promising, they currently have a lower energy density than lithium-ion batteries, meaning they store less energy per unit of weight.

For EVs, this translates to shorter driving ranges for the same-sized battery. That’s especially important in electric two-wheelers like motorbikes and electric bicycles, which don’t have much extra space for storing bulky batteries.

However, advancements in cathode materials and battery architecture are quickly closing this gap, which Yadea has demonstrated. These sodium-ion batteries still can’t match the energy density of lithium-ion batteries, but as they continue to improve their energy density, the technology’s other major advantages provide encouraging signs for larger adoption in the industry.

Yadea’s status as a major electric motorbike maker also means that its adoption of sodium-ion battery technology could help lead the entire industry towards this battery chemistry, bringing safety and performance benefits along with it.

Last year I had the unique opportunity to visit one of Yadea’s global manufacturing sites.

To see inside the company’s massive and highly-automated manufacturing processes, check out the video below!

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CES2025 | John Deere autonomous mower promises a perfect cut, every time

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CES2025 | John Deere autonomous mower promises a perfect cut, every time

At CES2025, the impressively built-out John Deere exhibit was all about automation. Autonomous job sites, autonomous farms … but it was this new, battery electric, autonomous lawn mowing robot that stole the show.

The self-driving Deere mower robot was positively dwarfed by the giant farm machinery surrounding it, but it continues to prove that humans will pack bond with anything as more than one burly-looking and grizzled man asked what its name was. (It’s Howard. I’ll fight you.)

For his part, Howard packs a 21.4 kWh battery pack that runs a suite of electric motors that includes a drive motor and three cutting blade motors spread across a 60 inch cutting deck – but it’s not the electric motors that make John Deere’s little robot mower cool, it’s the way it works.

See, instead of using “just” GPS data or “just” repeating a pre-recorded run, Howard can do something in between. The way it was explained to me, you would ride the stand-up mower around the perimeter of the area you wanted to mow, select a pattern, then hop off, fold up the platform, and let it loose. Howard mows just the way you would, leaving you to focus on edging, planting, or (let’s face it) schmoozing with the clients.

It’s exactly the sort of help landscapers are looking for.

But that should come as no surprise, of course. John Deere, perhaps more than most companies, knows its customer. “We’ve been in the turf business for 60 years — it’s a core part of Deere,” says Jahmy Hindman, chief technology officer at John Deere, explaining things beautifully. “The work that’s being done in this industry is incredibly labor intensive … they’re not just doing the mowing work. They’re doing the tree trimming, maintaining flowerbeds and all these other jobs. The mowing is table stakes, though, for them to get the business. It’s the thing they have to do in order to get the higher value work.”

Tim Lewis, lead engineer with the commercial automatous mower, told Lawn & Landscape that the industry in general has a high turnover rate as well, making it difficult to hang to people who know where one job ends and another begins. “There’s a lot of nuances it takes to do these jobs effectively,” he explains, “so “Autonomy can help with that.”

The John Deere autonomous commercial mower (there’s no snazzy alphanumeric, yet) leverages the same camera technology as other Deere autonomous machines, but on a smaller scale (since the machine has a smaller footprint). With two cameras each on the front, left, right, and rear sides of the little guy, he has a 360-degree view of the world and enough AI to lay down a pattern, avoid an obstacle, and shut off if it thinks it’s about to mow down something (read: someone) it shouldn’t.

John Deere will have Howard on display through tomorrow at CES in the LVCC’s West Hall. If you’re in town, be sure to go say hi.

John Deere CES2025

SUOURCE | IMAGES: John Deere; Electrek.

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Tesla sales fall, Honda brings back ASIMO, and a bunch of stuff from CES2025

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Tesla sales fall, Honda brings back ASIMO, and a bunch of stuff from CES2025

Despite big discounts and 0% financing, Tesla sales are down for the first time in a decade … but there’s even bigger robot news with the return of Honda ASIMO, a flying car from China, and a whole lot more from today’s episode of Quick Charge!

CES2025 was all about AI – and not just what AI could do, but what AI could do for you. That’s where ASIMO comes in, helping everyone have a better time in there car and not at all just a modern day version of KITT dreamed up by a bunch of Gen X executives (wink, wink). We also cover some neat stuff from Suzuki, Aptera, Volvo, and more. Enjoy!

Prefer listening to your podcasts? Audio-only versions of Quick Charge are now available on Apple PodcastsSpotifyTuneIn, and our RSS feed for Overcast and other podcast players

New episodes of Quick Charge are recorded, usually, Monday through Thursday (and sometimes Sunday). We’ll be posting bonus audio content from time to time as well, so be sure to follow and subscribe so you don’t miss a minute of Electrek’s high-voltage daily news!

Got news? Let us know!
Drop us a line at tips@electrek.co. You can also rate us on Apple Podcasts and Spotify, or recommend us in Overcast to help more people discover the show.

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