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Heating and cooling equipment multinational Johnson Controls has developed an air source heat pump prototype that can operate in temperatures below -20F (-29C) as part of the US Department of Energy’s (DOE) Residential Cold Climate Heat Pump Challenge.

DOE launched this challenge because, according to the program’s fact sheet, “additional efforts are needed to address common technical and market barriers to wider adoption by consumers – which include performance at temperatures of 5F and below, installation challenges, and electricity grid impacts during peak demand periods.”

DOE is working with manufacturers to lab test cold climate heat pumps’ performance. Field testing will take place over the next couple years, and DOE is aiming for commercialization in 2024.

Besides Johnson Controls, other manufacturers such as Carrier, Trane, and Bosch are also taking part in the challenge.

Trane successfully completed its lab testing phase required by the heat pump challenge in early November and moved into the field trials phase. Katie Davis, vice president of engineering and technology, Residential HVAC, Trane Technologies, told Contracting Business in December that “there are no products in the market that currently meet the DOE CCHP Challenge performance specifications.” However, Davis said:

When tested at the DOE’s lab, the Oak Ridge National Lab Facility, Trane’s CCHP prototype performed in temperatures as low as -23F, surpassing the mandatory -20F Fahrenheit DOE requirement. 

There are already units on the market in the United States that work at low temperatures – just not as low as the Johnson Controls or Trane prototypes. Johnson Controls currently has two residential heat pumps on the US market – the York YZV and York HMH7 – that can operate at temperatures as low as 5F (-15C). (Johnson Controls bought York in August 2005.) And Trane’s Platinum XV20i can operate at temperatures as low as 0F.

Check out this guide from Northeast Energy Efficiency Partnerships to learn more about heat pumps.

Read more: The heat pump market will more than double to $13B in cold climates by 2031

Photo: York


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Greenlane launches a second long-haul EV truck corridor pilot

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Greenlane launches a second long-haul EV truck corridor pilot

Greenlane is firing up its second commercial EV truck charging corridor – this time connecting Southern California to Phoenix along Interstate 10. The move targets a major gap in electric freight infrastructure on one of the busiest shipping routes in the US.

Greenlane’s new electric truck corridor is backed by a strategic partnership with electric truck maker Windrose Technology, which has already proved the route’s viability. Its R700 Class 8 electric semi pulled off single-charge trips from Greenlane’s flagship Colton, California, site to Phoenix – nearly 300 miles – with a gross combined weight of 74,420 pounds and still had 12% battery left.

That’s no small feat for long-haul freight. Windrose also completed a Colton-to-Las Vegas run on I-15 under similar conditions. The trucks can charge fast, too – the R700 hit a peak 772 kW using dual-gun charging at Colton, cutting downtime for heavy-duty operations.

Windrose plans to build 2,000 electric trucks in 2026 and ramp up to 10,000 in 2027 worldwide. “Electric long-haul trucking isn’t just theory – it’s proven real-world performance,” said Windrose founder and CEO Wen Han.

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The I-10 corridor will link Greenlane’s Colton hub to new sites in Blythe, California, and Greater Phoenix, Arizona. It’s part of the company’s larger plan to create a nationwide public charging network for medium- and heavy-duty fleets.

Electric trucking carrier Nevoya will be among the first customers to run the corridor. The company will use the Colton site as a charging and driver support base while operating battery-electric trucks along both I-10 and I-15.

Greenlane’s Colton flagship opened in April and packs over 40 high-speed chargers, including 12 pull-through bays for semis and 29 bobtail lanes. The site also has restrooms, Wi-Fi, 24/7 security, carports, office space, and parking – the kind of amenities long-haul drivers need on the road.

Read more: Greenlane’s flagship electric charging truck stop is now online


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Rivian is working on a steer-by-wire system – and rear wheel steering (updated)

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Rivian is working on a steer-by-wire system - and rear wheel steering (updated)

Rivian has posted a job listing for a steering engineer, specifically mentioning work on a future steer-by-wire system for the company.

Update, Aug 11: Rivian has now specifically mentioned rear-wheel steering in a job posting.

Steer-by-wire is an automotive concept that has been around for a long time, but hasn’t yet reached mass adoption. The idea is to replace (or supplement) mechanical linkages between the steering wheel and the wheels with electronic actuators instead.

There are a number of potential benefits to this, like allowing more customizability or adaptability to a steering system, reducing mechanical complexity, or adding speed-sensitive variable steering ratios.

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Although there are also disadvantages, like a reduction in steering feel (although, since most cars are moving to electronic power steering, that was already gone anyway).

But few cars have implemented steer-by-wire systems, or at least not fully committed to them, given that mechanical steering racks are a relatively solved problem and the general inertia of the car industry which would rather stick with a solution they know than switch to something better (haven’t we here, at this EV publication, heard *that* one before…). There’s also the matter of regulations, which have often been written to require mechanical steering systems, and may need updating to allow for steer by wire.

But, steer by wire made it into mass production with the release of the Tesla Cybertruck. This was big news when Tesla committed to this – at the time, it was the only thing on the road to exclusively use a steer by wire system, though there are other cars with partial steer by wire (for example, mechanical front wheel steering, and steer by wire rear-wheel steering).

But it seems to have opened the floodgates, as a number of other companies are working on or have since released steer by wire systems (Lexus, for example).

And now, it looks like Rivian is one of those companies – though we don’t know if it’s for the front or rear. (Update: Well, now we know, it looks like they are at the very least developing a rear-wheel steering system, according to another job listing. Though the company might still be working on steer-by-wire for the whole vehicle, too)

The company posted a job listing for “Sr. Staff Technical Program Manager, Steering Actuator System,” based at its Irvine, CA headquarters (spotted by Rivianforums). This wouldn’t be so exceptional, except that the job posting also specifically points out that “you’ll have full cradle-to-grave ownership of the SBW subsystem.”

So – we know they’re working on steer by wire, to some extent.

But a few other EVs, particularly large EVs like the Rivian R1 platform is, use steer by wire just for the rear wheels – for example the Hummer EV and Rolls-Royce Spectre. These systems are particularly helpful for giant vehicles, because it allows them to be more nimble and make turns that otherwise would require a lot more… negotiation in a giant land yacht.

So it’s possible that Rivian is only working on rear wheel steer by wire here, but we’d like to think there’s a chance it’s working on steer by wire for the full vehicle.

We also don’t know if this would show up on all of Rivian’s vehicles, or only on certain models – the R2 and R3 are in development, with R2 in pretty late stages, and the R1 just got a big refresh. But, perhaps even more interestingly (and very speculatively), VW has invested heavily in Rivian for technology help, so we wonder if we might end up seeing this in VW group vehicles, or Scout vehicles eventually…


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BMW isn’t wasting any time discounting its new 2026 EVs

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BMW isn't wasting any time discounting its new 2026 EVs

Automakers are scrambling to push their EVs out the door before the $7,500 Federal tax incentive for EVs disappears — and BMW is no different, offering aggressive cash back, owner loyalty, and special financing rates on its just-released 2026 model year EVs.

BMW has a history of offering solid loyalty incentive programs on its EVs in early summer to clear the tail-end of the model year and make room for the incoming builds, but CarsDirect is reporting some unusual loyalty deals from the brand that seem to suggest BMW is keen to capitalize on a spike in EV sales ahead of the Federal tax incentive’s looming cancellation in September.

BMW dealers now have the choice of adding an additional $1,000 loyalty contribution on select 2026 EVs. The i5 and i7 are offered with $1,000 and $4,000 loyalty bonuses, respectively, meaning if you drive a BMW and your dealer opts to tack on the extra bonus, you could save $5,000 on a 2026 i7. These loyalty programs are good when buying or leasing.

There’s also a $1,000 conquest bonus available for drivers of eligible EVs and PHEVs from other brands. This program is stackable with other offers.

CARSDIRECT

Like other EV brands offering huge lease incentives, BMW customers will see the largest rebates on new BMWs when leasing. Now through September 30th, 2026 BMW i5, i7, and iX models are available with a stout $9,900 lease credit, while the bigger BMW XM comes in with a slightly lower, but still substantial $7,500 lease incentive.

Big deals on big BMW i7 sedan


BMW-suspension-1
BMW i7, via BMW.

People who prefer to own their vehicles once the payments are up can still score a great deal on an objectively excellent 2026 BMW i7 luxo-cruiser, thanks to the previously mentioned loyalty bonus if they’re previous customers plus a $7,500 Loan Credit that anyone can get when financing their new i7 with the brand’s captive financing company. BMW Bank offers financing rates as low a 3.99% for up to 60 months on the 2026 i5 and i7 sedans, as well as the iX crossover, as well as 4.99% APR 60-month rate on the high-performance XM plug-in hybrid.

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The BMW iX, of course, snatched the top spot in J.D. Power’s EV Satisfaction Survey last year, having taken the crown from its BMW i4 stablemate. You can find out what’s behind that score here, or experience it for yourself at a local BMW dealer near you. Click the link(s) below to get a uniquely tailored offer on the exact BMW you want (trusted affiliate links).

SOURCES: CarsDirect, J.D. Power; images via BMW.


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