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Leaky homes and buildings are some of the greatest climate offenders, but a Dayton, Ohio-based start-up is making big gains in shoring up the problem. Aeroseal, which seals both air ducts and building envelopes, is now available across America and in 29 countries.

Leaky airducts and walls are the single largest reason for wasted energy in homes. Typical systems can lose between 25% and 40% of the heating or cooling energy put out. While newer homes are built more tightly, old homes are major culprits. Reducing that wasted energy not only lowers consumers’ bills, but also reduces emissions associated with energy production, which are a significant contributor to climate change. Overall, heating and cooling residences and businesses accounted for 13% of the world’s greenhouse gas emissions in 2020, according to the U.S. Environmental Protection Agency.

Since air ducts are often inside the walls, sealing them can be difficult, but this technology does it from the inside, working through the ducts without ever cutting into a wall.

“What we have done is we have found a way to seal the air ducts in the building envelope without physically getting access to the leaks,” said Aeroseal CEO Amit Gupta.

The system is relatively simple, and akin to fixing a flat tire. It first pressurizes the ducts or building envelope with a fan, then injects micron-sized particles, which, as they try to escape the building or any space, automatically adhere to the gaps and seals them. The particles are made of a non-toxic, non-flammable emulsion of water and vinyl acetate, according to the company, which adds that these are some of the same ingredients found in pacifiers and chewing gum.

Gupta says sealing the average-sized home would cost about $2,500, but claims the investment will pay for itself in energy cost savings within four years.

“Everybody should fix this. Not only they will make their house comfortable, they will also make their house more healthy because they won’t be sucking in air from attics or from the crawlspace or between the walls,” added Gupta.

Aeroseal is working with big builders like DR Horton, Lennar and Beazer, and midsized builders like Denver-based Thrive.

“We built our brand on energy efficiency, and this is really the most foolproof way to get there,” said Gene Myers, CEO of Thrive. “I think energy efficiency and carbon reduction go hand in hand, and we’re really focused on carbon reduction in our company.”

Aeroseal has so far raised about $30 million in venture capital from the likes of Breakthrough Energy, Energy Impact Partners, Building Ventures and 2150.

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E-quipment highlight: Haulotte E MAX rough terrain electric scissor lifts [video]

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E-quipment highlight: Haulotte E MAX rough terrain electric scissor lifts [video]

The new HS18 E MAX (called “HS5390” E MAX in the US, because we don’t know what meters are) rough terrain electric scissor lift from Haulotte can drive around your job site at full height, and with a full load.

Last week, Haulotte added the new HS5390 E MAX to its line of electric rough-terrain scissor lifts, completing the company’s existing HSE (HS electric) range of scissor lifts. The HS18, though, is unique – and not just because of its 18 meter fully extended height. The HS18 E MAX can be driven both fully extended, and fully loaded.

Two configurations of its material handling racks are available for the HSE scissors. The racks are built to suit the materials being transported, generally expected to be “panels” (think drywall, windows, etc.) or pipes.

Haulotte material handling rack

With a load capacity of 400 kg (over 880 lbs.), Haulotte says its new HS5390 E MAX is ideal for jobs that require the transport of heavy loads across unfinished surfaces, using a series of optional attachments to offer a productive and safe solution to keeps materials organized and off the ground, minimizes the risk of trip and fall accidents.

Haulotte says its PULSEO-powered scissor lifts (“PULSEO” is Haulotte’s electric drive brand name) revolutionize the aerial industry by offering the performance of an internal combustion diesel machine in a more environmentally friendly package that can be used across the job site and in indoor or urban settings where loud, polluting diesels aren’t an option.

Electrek’s Take

HS5390 E PRO; via Haulotte.

This is a great example of a second-generation product doubling down on electrification and delivering significant improvements on its products without focusing on things like increased runtime (that’s the equivalent of “range anxiety” in the automotive world).

By stepping back and saying, “these things are already getting the job done time-wise, how can we make them do more in the time they already have?” Companies like Haulotte and JCB have made it infinitely easier for construction crews to put the HSE scissor lifts to work.

SOURCE | IMAGES: Haulotte, via Heavy Equipment Guide.

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Mazda EZ-6 EV goes on sale with a starting price under $25,000

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Mazda EZ-6 EV goes on sale with a starting price under ,000

Mazda officially opened the order books on its new Mazda EZ-6 EV and EREV versions of the car in China yesterday. And the starting price? It’s under $25,000.

Co-developed by Mazda and Chinese state-owned Changan Auto, the EZ-6 was one of two new electric offerings that debuted back in April. The other was a CX-5/0-sized crossover called the Arata, but the EZ-6 seemed closer to production, with a promised on-sale date later this year.

Well, Mazda lived up to its promise. The all-new Mazda EZ-6 is officially available for pre-order in China. And, while our sources (Chinese car blogs Autohome and CarNewsChina) are a bit fuzzy on the actual price, the translation seems to indicate a starting price of just 160,000 yuan (a tick over $22,800, as I type this).

One thing that’s less fuzzy, however, is that there are four extended range EV, or “EREV” versions of the car (read: hybrid) along with three fully electric BEV versions available for order at the pre-sales launch.

Value for money

Despite the low price, the base version of the newest Mazda get leather seating surfaces, and higher trim versions splice leather and suede (Alcantara?) together. There’s a 14-speaker Sony audio system available, too, along with 64-color ambient lighting, “zero-gravity” front seats, which means that the seats can recline to a near-flat position, and a panoramic glass roof.

The BEV model is reported to be equipped with a single electric drive motor putting out 190 kW of power (approx. 254 hp), and can be had with either a 56.1 or 68.8 kWh battery pack, good for a CLTC range of 480 km or 600 km (about 370 miles), respectively. Top speed of either model is an electronically-limited 170 km/h (105 mph).

The “EREV” model (man, do I hate that acronym) is equipped with a 93 hp 1.5L range extending ICE generator paired to a 160 kW (215 hp) electric motor and feeding electrons to a lithium iron phosphate battery. Battery range is about 80 miles, with a “maximum comprehensive range” quoted as 1301 km (approx. 808 miles).

Electrek’s Take

Mazda-first-EV-sedan
Mazda EZ-6 electric sedan; via Mazda.

Mazda’s CEO, Masahiro Moro is working with Changan to, “turn Mazda’s China business around.” The EZ-6 is part of that plan, and is being called Mazda’s first “global” sedan. Despite that, it seems unlikely that the EZ-6 will ever make it to the US.

And that’s too bad. Our roads could use a little electrified Zoom-zoom.

SOURCES | IMAGES: Mazda, via Autohome and CarNewsChina.

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Bidirectional charging may be required on EVs soon due to new CA law

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Bidirectional charging may be required on EVs soon due to new CA law

It’s an exciting week for grid resiliency-lovers in California, as Governor Gavin Newsom followed up his earlier smart grid law and signed another law this week which may require bidirectional charging on EVs in the future – though the law has no hard timeline attached, so it may be a while before we see this happen.

Bidirectional charging refers to the capability of electric vehicles to not just take electricity from the grid to charge, but to output electricity in various forms, whether this be vehicle-to-load (plugging in devices, like the 1.8kW capability on the Kia Niro EV), vehicle-to-home (like Ford’s “Intelligent Backup Power” system), or vehicle-to-grid (like the Nissan Leaf is capable of).

While these applications may seem like a party trick, widespread use of bidirectional charging could lead to huge benefits for efficiency, grid resiliency, and enable much greater penetration of renewable electricity generation.

Most electric grids don’t really have trouble meeting the regular everyday needs of electricity consumers, it’s when big spikes happen that things get difficult. Either on a hot day when everyone is using air conditioning, or a day when electricity generation is curtailed for some reason or another, that’s when things get difficult.

And as climate change makes temperatures hotter, California’s grid is often overtaxed on the hottest summer days, which are becoming more numerous. Even worse, methane-burning fossil gas peaker plants are the highest-polluting form of electricity California consumes, and these are currently used at peak times in order to deal with high demand.

One solution to this problem is adding energy storage to the grid which can be dispatched when needed, and which can fill up when the grid is oversupplying electricity. This helps to balance out supply and demand of electricity and make everything a little more predictable.

This is why there has been a push for grid-based storage like Tesla megapacks, which represent a large source of rapidly-dispatchable energy storage.

But there’s another source of grid-connected batteries out there which was right under our nose the whole time: electric cars.

EVs, which are mostly connected to the internet anyway, could be used as a distributed energy storage device, and even called upon to help provide electricity when the grid needs it. We already see this happening with Virtual Power Plants based on stationary storage, but if cars had V2G, theoretically cars could contribute in a similar way – both saving the grid, and perhaps making their owners some money along the way via arbitrage (buying electricity when its cheap and selling it when its expensive).

The problem is, not many automakers have included V2G capabilities in their cars, and in the cars that do have it, not many manufacturers have made V2G-capable equipment, and the ones who have built it haven’t seen that many customers who are interested in spending the extra money to upgrade their electrical systems with V2G-capable equipment.

So there needs to be something to jumpstart all of that, and California thinks it might just have the thing.

New CA law might require bidirectional charging… eventually.

The idea started in 2023 when state Senator Nancy Skinner introduced a bill which would require EVs to have bidirectional charging by 2027.

As this bill made its way through the legislative process, it got watered down from that ambitious timeline. So the current form of the bill, which is now called SB 59, took away that timeline and instead gave the California Energy Commission (CEC) the go-ahead to issue a requirement whenever they see it fit.

The bill directs the CEC, the California Air Resources Board, and the California Public Utilities Commission to examine the use cases of bidirectional charging and give them the power to require specific weight classes of EVs to be bidirectional-capable if a compelling use case exists.

The state already estimates that integrating EVs into the grid could save $1 billion in costs annually, so there’s definitely a use case there, but the question is the cost and immediacy of building those vehicles into the grid.

The reason this can’t be done immediately is that cars take time to design, and while adding bidirectional charging to an EV isn’t the most difficult process, it also only really becomes useful with a whole ecosystem of services around the vehicle.

A recent chat Electrek had with DCBEL, making bidirectional chargers simpler for consumers

Even Tesla, which for years has touted itself a tech/energy company and sold powerwalls, inverters, solar panels and so on, is still only gradually trickling its bidirectional Powershare feature out onto its vehicles.

And that ecosystem has been a bit of a hard sell so far. It’s all well and good to tell someone they can make $500/year by selling energy to the grid, but then you have to convince them to buy a more expensive charging unit and keep their car plugged in all the time, with someone else managing its energy storage. Some consumers might push back against that, so part of CEC’s job is to wait to pull the trigger until it becomes apparent that people are actually interested in the end-user use case for V2G – otherwise, no sense in requiring a feature that nobody is going to use.

Electrek’s Take

Given all of these influences, we wouldn’t expect CA to require bidirectional charging any time soon. But it still gives the state a powerful trigger to pull if other efforts, like the recently-signed smart grid law, turn out not to be enough as California works to, grow, clean up, and make its grid more affordable all at the same time.

But having the force of law behind it could turn V2G into less of a parlor trick and more into something that actually makes a difference the way us EV nerds have been dreaming of for decades now (true story: Electrek once turned down Margot Robbie for an interview and instead talked to some engineers about V2G for an hour).

So, telling manufacturers that California may start mandating bidirectional charging soon means that those manufacturers will perhaps start taking V2G more seriously, particularly given the size and influence of CA’s car market. Even if the CEC doesn’t make it a requirement, the threat of it eventually becoming one means that EV-makers will probably start getting ready for it regardless.

There’s no real point to a single person discharging their car into the grid, but when millions of cars are involved, you could work to flatten out the famous “duck curve,” which describes the imbalance between electricity supply and demand. We hear a lot about “intermittency” as the problem with wind and solar, and grid storage as the solution to that, so being able to immediately switch on gigawatt-hours worth of installed storage capacity would certainly help to solve that problem. And we hope this law helps us get just a little closer to that potential future.


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