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Electrek spoke with Kam Mahdi, CEO of renewable engineering firm Clean Energy Technologies in Costa Mesa, California, about how extreme heat can impact the power grid and renewables, as well as what’s being done to keep them online.

Electrek: The southern US and other parts of the world are currently suffering an extreme heat wave, and it’s expected to continue. How can that kind of heat impact the power grid?

Kam Mahdi: The spike in temperatures inevitably drives up electricity demand, particularly due to the increased use of air conditioning. This additional demand often strains the power grid, sometimes to the point of triggering blackouts or requiring rolling blackouts to stave off a complete grid failure.

Extreme heat can also impair the efficiency of power generation and transmission. Both renewable and conventional power plants may operate less efficiently under high temperatures. Likewise, electricity transmission lines can lose efficiency due to higher resistive losses at elevated temperatures.

Adding to the complexity, these hot and dry conditions also elevate the risk of wildfires, which can wreak havoc on transmission infrastructure. This, in turn, can lead to power outages and exacerbate the challenge of power management across the grid.

Electrek: How can the high temperatures affect solar, wind, and battery storage?

Kam Mahdi: Solar and wind have unique challenges in high temperatures. While sunshine is, of course, needed to generate electricity from solar panels, extreme heat can reduce solar panels’ output efficiency by a margin of 10-25%. That’s because as the solar panel’s temperature rises, the output voltage correspondingly declines, consequently impairing the production of electricity.

Wind energy can also be impacted. Generally, high temperatures can coincide with high-pressure weather systems that lead to calm conditions, reducing wind power generation.

Battery storage systems, particularly lithium-ion batteries, can suffer in high temperatures as well. Excessive heat can accelerate chemical reactions within the battery, leading to faster degradation and reduced lifespan. Additionally, heat can increase the risk of thermal runaway, a condition that can lead to battery failure.

Electrek: Are there innovations that can be utilized to counteract the negative effects of extreme heat on renewables and battery storage?

Kam Mahdi: Engineers worldwide are currently exploring innovative concepts like thermophotovoltaics, which directly convert heat into electricity. They’re also refining solar panel designs, utilizing advanced materials and coatings for enhanced heat resistance.

In the wind energy sector, we are leveraging predictive weather models to manage power generation more effectively during high heat and low wind periods, coupled with the continual improvement of turbine design.

The battery storage industry is now focusing on robust thermal management systems incorporating advanced cooling methods, heat-resistant materials, and improved battery design in order to ensure optimum performance and extended longevity in challenging thermal conditions.

Our company, Clean Energy Technology, is contributing to this collective effort. Our heat recovery solutions enable us to capture and repurpose waste heat – a byproduct of industrial processes and power generation. This process increases efficiency and proves instrumental in managing energy demand, particularly during intense heat periods when power consumption peaks.

It’s important to incorporate a healthy mix of renewables alongside energy storage systems, which can help create a more resilient grid that’s capable of withstanding the strains brought about by extreme heat.

These strategies, combined with energy conservation efforts, are vital in ensuring a reliable energy supply, even in severe heat waves.


Kam Mahdi is a cofounder of Clean Energy Technologies (CETY) who has served as chief executive officer since the company’s inception in September 2015. He spearheaded the acquisition of General Electric Heat Recovery Solutions, positioning CETY as a key competitor in the renewable and energy efficiency sectors. Mahdi holds a bachelor of science in electrical engineering from California State University, Northridge.

Read more: As the US heats up, here’s how you can help prevent blackouts

Photo: Arizona Public Service Electric


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Workhorse electric delivery vans arrive in Canada this spring

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Workhorse electric delivery vans arrive in Canada this spring

Following approval from Transport Canada, EV startup Workhorse will be bringing the W56 and W750 model electric delivery vans to commercial truck dealers in Canada as early as this spring.

Workhorse first showed its W56 medium-duty electric truck at Indiana’s Work Truck Week in 2023, and has sold the trucks to logistics and delivery companies like FedEx and Pride Group – which ordered more than six thousand of the electric vans in 2021, and continues to expand its fleet.

“This is a major step forward for Workhorse,” says Josh Anderson, Workhorse’s chief technology officer in a press statement. “Pre-clearance from Transport Canada opens up a large new market for our products throughout Canada, including with fleets that operate across borders in North America.”

As part of the approval process, Workhorse completed its registration as a foreign manufacturer under Transport Canada’s Appendix G clearance program. Transport Canada confirmed the vans’ compliance with Canadian Motor Vehicle Safety Standards (CMVSS) for both vehicles – but it remains to be seen if and how the latest tariff-driven trade war between the Trump Administration’s US and Canada will impact Workhorse’s plans to expand throughout North America.

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Despite that uncertainty, Workhorse execs remain upbeat. “We’re excited that our electric step vans can now reach Canadian roads and highways, providing reliable, zero-emission solutions that customers can depend on,” added Anderson.

Canadian pricing has yet to be announced.

Electrek’s Take

FedEx Places First Order for 15 Workhorse W56 Step Vans to Grow Zero-Tailpipe Emission Fleet
FedEx electric delivery vehicle; via Workhorse.

There’s no other way to say it: the Trump/Musk co-presidency is disrupting a lot of companies’ plans – and that’s especially true across North American borders. But in all this chaos and turmoil there undoubtedly lies opportunity, and it will be interesting to see who ends up on top.

SOURCE | IMAGES: Workhorse, via Electric Autonomy Canada.

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Liebherr developing giant, 140-ton Segway-style autonomous haulers [video]

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Liebherr developing giant, 140-ton Segway-style autonomous haulers [video]

The new Liebherr S1 Vision 140-ton hauler is unlike any heavy haul truck currently on the market – primarily because the giant, self-propelled, single-axle autonomous bucket doesn’t look anything like any truck you’ve ever seen.

Liebherr says its latest heavy equipment concept was born from a desire to rethink truck design with a focus only on core functions. The resulting S1 Vision is primarily just a single axle with two powerful electric motors sending power to a pair of massive airless tires designed carry loads up to 131 tonnes (just over 140 tons).

The design enables rapid maintenance, as important components easily accessible for quick servicing. Wear parts can be replaced efficiently, and the electric drive significantly reduces maintenance work. This helps to minimise downtimes and increases operational efficiency.

LIEBHERR

Because of its versatility, durability, and ability to perform zero-turn maneuvers that other equipment simply can’t, the Liebherr S1 Vision can be adapted for various applications, including earthmoving, mining, and even agriculture. There’s also a nonzero chance of this technology finding applications supporting other on-site equipment through charging or fuel delivery.

The S1 accomplishes that trick safely with the help of an automatic load leveling system that ensures maximum stability, even on bumpy or rough terrain. The company says this technology significantly reduces the risk of tipping while providing smooth and secure operation across various environments.

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Liebherr will show the S1 Vision at this year’s bauma equipment exhibition in Munich, Germany. The design has already been nominated for the bauma Innovation Award in the Mechanical Engineering category – and my money’s on it winning.

Electrek’s Take

This is such goofy, stupid fun that if it was wheelbarrow-sized I’d have three of them. I can’t imagine the insanity of watching one of these things roll across a job site with 100 tons of granite in the bucket – and will have nightmares about the kind of damage it could do if it flipped out like a poorly made Chinese hoverboard clone whipping a toddler across a living room … which, in fairness, would probably get a billion views on Instagram or TikTok or whatever.

I can’t wait.

SOURCE | IMAGES: Liebherr.

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Meet the newest EV from Hyundai – new HX19e electric excavator

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Meet the newest EV from Hyundai – new HX19e electric excavator

The HD arm of Hyundai has just released the first official images of the new, battery-electric HX19e mini excavator – the first ever production electric excavator from the global South Korean manufacturer.

The HX19e will be the first all-electric asset to enter series production at Hyundai Construction Equipment, with manufacturing set to begin this April.

The new HX19e will be offered with either a 32 kWh or 40 kWh li-ion battery pack – which, according to Hyundai, is nearly double the capacity offered by its nearest competitor (pretty sure that’s not correct –Ed.). The 40kWh battery allows for up to 6 hours and 40 minutes of continuous operation between charges, with a break time top-up on delivering full shift usability.

Those batteries send power to a 13 kW (17.5 hp) electric motor that drives an open-center hydraulic system. Hyundai claims the system delivers job site performance that is at least equal to, if not better than, that of its diesel-powered HX19A mini excavator.

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To that end, the Hyundai XH19e offers the same 16 kN bucket breakout force and a slightly higher 9.4 kN (just over 2100 lb-ft) dipper arm breakout force. The maximum digging depth is 7.6 feet, and the maximum digging reach is 12.9 feet. Hyundai will offer the new electric excavator with just four selectable options:

  • enclosed cab vs. open canopy
  • 32 or 40 kWh battery capacity

All HX19es will ship with a high standard specification that includes safety valves on the main boom, dipper arm, and dozer blade hydraulic cylinders, as well as two-way auxiliary hydraulic piping allows the machine to be used with a range of commercially available implements. The hydraulics needed to operate a quick coupler, LED booms lights, rotating beacons, an MP3 radio with USB connectivity, and an operator’s seat with mechanical suspension are also standard.

Like its counterparts at Volvo CE, the new Hyundai excavator uses automotive-style charging ports to take advantage of existing infrastructure at fleet depots and public charging stations. More detailed specifications, dimensions, and pricing should be announced by bauma.

Electrek’s Take

HX19e electric mini excavator; via Hyundai Construction Equipment.

The ability to operate indoors, underground, or in environments like zoos and hospitals were keeping noise levels down is of critical importance to the success of an operation makes electric equipment assets like these coming from Hyundai a must-have for fleet operators and construction crews that hope to remain competitive in the face of ever-increasing noise regulations. The fact that these are cleaner, safer, and cheaper to operate is just icing on that cake.

SOURCE | IMAGES: HD Hyundai; via Construction Index, Equipment World.

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