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Renewable energy giant Siemens Gamesa today announced the launch of GreenerTower, a sustainable steel tower that reduces a wind turbine’s carbon footprint by 20%.

Wind turbine towers made of sustainable steel

Wind turbine towers are made up of 80% steel plates. Siemens Gamesa says its new GreenerTower will ensure a CO2 reduction of at least 63% in the tower steel plates compared to conventional steel production.

The new GreenerTower is available for both onshore and offshore wind turbines for installation from 2024 onward, and it’s already closed its first order. Starting in 2026, German energy company RWE is going to install 36 GreenerTowers at the 1,000-megawatt Thor offshore wind farm in Denmark, which will make up half of the SG 14-236 DD offshore wind turbines installed there.   

In September 2021, Siemens Gamesa launched what it claims is the world’s first recyclable offshore wind turbine blade, and RWE is also testing those. Sven Utermöhlen, CEO of RWE Offshore Wind, said:

We are already testing the world’s first recyclable wind turbine blades by Siemens Gamesa under real-life conditions. By piloting the GreenerTower at our Thor offshore wind farm, RWE is now once again taking the lead by helping to significantly reduce the carbon footprint of wind turbines.

How the more sustainable steel is made

German steel manufacturing company Salzgitter AG, with its heavy plate mill Ilsenburger Grobblech GmbH, is the first supplier to be qualified and third-party certified.

Steel is the largest single source of CO2 equivalent emissions for wind turbines. Producing greener steel entails increased use of scrap steel, less energy-intensive steel manufacturing processes, and an increased use of renewable energy sources. As one of the measures to decarbonize steel production, for example, the electric arc furnace will be fed with clean electricity from offshore wind farms. 

On average, there are 1.91 tons of CO2 emissions during the manufacturing process for every ton of steel. By setting a threshold of 0.7 tons CO2-equivalent emissions per ton of steel, Siemens Gamesa significantly reduces the footprint of the largest component in terms of CO2-equivalent emissions. 

Wind turbine tower production currently accounts for more than one-third of all wind-turbine-related emissions. If Siemens Gamesa installed only GreenerTowers in a year, it would be the same as removing more than 466,000 cars from Europeans roads for a year.

Read more: Siemens Gamesa claims world’s first recyclable offshore wind turbine blade

Photo: Siemens Gamesa


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What’s happening with Tesla’s solar roof?

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What's happening with Tesla's solar roof?

The Tesla Solar Roof tiles are still alive, but the product is on the back burner at Tesla as it failed to achieve its promises.

When launching the solar roof in 2016, CEO Elon Musk presented it as a critical product to accelerate solar power deployment, as it opens up the market to people who want to go solar but also need to replace their roof soon.

He said that he aimed for Tesla to produce 1,000 new solar roofs per week by the end of 2019. 

However, Tesla didn’t reach volume production of the solar roof tiles until 2020, and even then, it was at a fraction of the deployment it was aiming for.

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In 2022, Electrek reported that Tesla installed solar roofs for the first time and confirmed that the Company deployed 2.5 MW of solar roofs during the second quarter of 2022, equivalent to approximately 23 roofs per week, which is far short of its goal.

Since then, Tesla has even further pulled back its solar effort – and even stopped reporting its solar deployment.

Many people are asking what it means for the solar roof, which Musk touted as a revolutionary product.

In 2023, we reported that Tesla began phasing out its solar business, particularly its in-house installations.

Tesla shifted its focus on deploying Powerwalls and solar inverters through third-party installers.

The same thing is happening with Tesla’s solar roof tiles. The company appears to be giving up on installing them itself, but some installations are still happening with third-party certified installers.

Tesla doesn’t even give online quotes on its solar roof anymore and has people submit requests for quotes through third-party installers:

“In order to receive pricing and product information, Tesla will share your contact information with a Tesla Certified Installer.”

We are hearing less about solar roof installations lately, as Tesla has gone virtually silent on the program; however, some ongoing installations are still being carried out by third-party installers.

Weddle and Sons Roofing just posted about a new 20 kW Tesla Solar Roof installation in Topeka, Kansas:

It’s challenging to determine the exact deployment rate of the solar roof, but based on our checks with a few installers, it doesn’t appear to have increased since 2022.

Tesla-certified installers are even convincing potential buyers to opt for a regular roof with solar panels instead of a solar roof. Potential buyer Jeff Betty shared this text from an unnamed installer:

This is not entirely surprising, as the primary issue with the Tesla Solar Roof tiles is their pricing. Tesla aimed for the solution to be competitive with higher-end roofing options, but it remains expensive and much less affordable than many durable roof options, plus solar panels.

Electrek’s Take

In short, the Tesla Solar Roof is still alive, but it’s nowhere near the revolutionary product Tesla claimed it would be.

Instead, it has become a very niche higher-end roofing product that Tesla deploys in very low volume through third-party installers.

It’s not in any way a significant part of Tesla’s energy business, which is now almost entirely Megapacks and Powerwalls.

While Tesla’s solar roof is not for everyone, now is a great time to go solar with rooftop solar panels.

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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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Retrospec Valen Rev+: A fat tire e-bike with the spirit of an all-terrain scrambler [Video]

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Retrospec Valen Rev+: A fat tire e-bike with the spirit of an all-terrain scrambler [Video]

For the Valen Rev+, Retrospec managed to get the best out of that iconic moto-style scrambler spirit and put it into a comfortably handling fat tire e-bike while also keeping the performance bits that make it fun, and the best part is it comes at a reasonable price of just under $1,800

Aside from the looks and price this bike has a unique fun factor that comes from a combination of a few key components here.

One is the 20 by 4.0 inch Fat MTB tires with puncture protection and reflective sidewalls. Aside from these tires offering an extra layer of protection and suspension, Retrospec’s decision to offer wide tires also gives way more stability than a typical bike tire, which makes going through ruts, mud, or sand pretty effortless. 

The second key component is the front suspension, which is fully adjustable and has 100mm of travel. Combined with the extra suspension from the fat tires, as mentioned earlier, this makes otherwise challenging terrain turn into fun detours that you’ll likely go out of your way to use. 

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The third component is the 750w rear hub motor, which gives the bike a 28 mph assisted top speed. Combined with the secure handling and added front suspension, the Valen Rev+ is the kind of bike you want to plan an adventure with. Whether that’s a dirt road shortcut on your commute or a day to the beach, the comfortable long seat makes it hard to say no to a trip with the Valen Rev+

On the practical side, Retrospec put some significant thought into the design and build of this bike to ensure that riders are cared for with those often less thought of yet still essential features. Starting with the battery, the fully integrated 720Wh battery uses LG 21700 cells for a total of 68 miles of range when fully charged. In addition, the battery is lockable and easily removable for both on- and off-bike battery charging. It’s also seamlessly integrated into the bike’s frame, making for a clean look. 

For safety, Retrospec added Tektro hydraulic disc brakes with e-bike-specific rotors, which is an important upgrade, considering an improved rotor typically allows for better heat dissipation and better overall performance. There are also Integrated front and rear lights with 100 Lux illumination for the front. Safety aside, the design here for the front light looks amazing.

Retrospec bike

For the less thought-of yet essential features, Retrospec included an easy-change rear wheel removal system that uses braze-ons located at the lower part of the bike, so there’s no need to remove zip ties. Unlike other e-bikes, the Valen Rev+ kept it simple with the same axel nut for both the front and rear which means fewer tools, but what makes the process itself a lot easier is not having to wrestle the chain when re-installing the wheel thanks to the chain hanger.

Retrospec bike

One of the great feelings of the Retrospec Valen Rev+ e-bike is how simple yet stylish it is; the display is a center-mounted color display with controls on the left-hand side of the handlebars. The control panel has only three buttons, so it’s as simple as it gets. With the up or down control, you can change through 6 levels of pedal assist, but if you’re looking for more control, you can also use the controls on the right side of the handlebars to cycle through the eight speeds on the Shimano Altus derailleur.

For how comfortable the moto-inspired Valen Rev+ is, it also feels great to pedal on in case you’re looking for more exercise and want to opt for the pedal assist rather than the throttle only. Unlike other e-bikes on the market, Retrospec’s Rev+ makes riding very approachable. For those who are newer to riding, that long seat and wide tires add a level of stability, making the overall learning experience much more enjoyable. With how comfortable the bike rides, it might make you think more about leaving the car at home more often and opting for the bike paths. 

For those looking to get as much fun as possible out of an e-bike aside from the fat tires and front suspension, Retrospec’s BMX style handlebars offer excellent geometry and height that gives you much more control over the bike in case you wanna stand up and tackle some of the more challenging trails. In addition, if you’re looking to forget pedaling altogether, you could even choose to get the optional footpeg accessories, which, combined with the BMX-styled handlebars, will make the bike much more functional for off-road riding. 

Overall, Retrospec seems to have put a lot of effort into bringing that scrambler moto spirit into a comfortable bike with loads of features that other manufacturers haven’t quite nailed down. From the easy rear wheel removal to the BMX-styled handlebars and comfortable long seat, it’s a very approachable and easy-to-maintain e-bike that can still rip on trails for those who want to tackle more of that tough off-road terrain.

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This is it: Mazda EZ-60 crossover interior revealed ahead of global launch [video]

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This is it: Mazda EZ-60 crossover interior revealed ahead of global launch [video]

We got our first look at the new-for-2026 Mazda EZ-60 electric crossover just last week, but Mazda played coy with the interior, leading many in the media (including us) to believe that the interior would be pretty similar to the EZ-6 sedan‘s. We were wrong.

I’ll cut right to the chase. The new Model Y rival from Mazda is coming for the Y’s old sales crown with a starkly elegant 26.45-inch 5K ultra-wide display with dual screens and (get this) a massive 100″ (!) augmented reality heads-up display (AR-HUD) that projects key driving information onto the windshield, alerting the driver of pedestrians, speed limits, etc.

You can check it out for yourself, below.

Mazda EZ-60 interior revealed

Via Planet Car News.

As you can see, the interior largely eschews buttons, knobs, or physical interfaces of any kind in favor of touchscreens. Those screens enable EZ-60 drivers and passengers to control and adjust a 23-speaker, 7.1.4-channel Dolby Atmos audio system, while a separate touchscreen in the rear allows drivers passengers to adjust climate and entertainment settings for themselves.

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Other interior features include super-slick digital wing mirror displays (the exterior “side mirrors” are aerodynamic cameras), and fully twenty kid- and family-friendly storage compartments sprinkled liberally throughout the vehicle. A relatively small 350-liter (12.3 cu ft) rear trunk expands to 2,036 liters (71.9 cu ft) with the seats folded flat. A 126-liter frunk (4.4 cu ft, or about the size of the mini fridge in your college dorm) adds extra practicality.

The electric Mazda SUV itself is built on the Changan EPA1 platform, and is believed to be powered by an 80 kWh battery good for 295 miles of WLTP range, and a 93 kW charging speed that can take the EZ-60 from 30 to 80% charge in a little over 30 mins.

Following the crossover’s Chinese launch – officially slated for April 23rd. Changan Mazda plans to release the EZ-60 in overseas markets under the Mazda CX-6e nameplate.

Electrek’s Take

Mazda-EZ-60-electric-SUV
EZ-60 electric crossover SUV; via Changan Mazda.

Mazda is on a hot streak right now – and not just in China, but in the US as well. The brand’s near-premium positioning is perfect, targeting middle class buyers who are willing to pay a premium to drive a vehicle with better fit and finish than the Ford, Chevy, and Stellantis offerings – but not enough of a premium to justify a move into Acura/Volvo territory. And, frankly, no one in the industry is doing paint as well as Mazda right now. Not until you start doubling the Mazda’s MSRPs, anyway.

Here’s hoping this one comes to the US.

SOURCE | VIDEO: Changan Mazda, via China Auto Show, Planet Car News.

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