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A new bill introduced Friday by US Senator Angus King of Maine could unlock the true potential of electric school buses and provide stability to communities in need. The BIDIRECTIONAL Act would “create a program dedicated to deploying electric school buses with bidirectional vehicle-to-grid (V2G) flow capability.”

Zero-emission electric school buses are being deployed nationwide as state leaders and school districts look to protect the children and communities they vow to serve. New information shows school districts that replace just one diesel school bus with an electric one can reduce toxic emissions by 54,000 pounds a year.

However, the benefits of electric school buses don’t stop there. The massive batteries they utilize also make perfect energy storage devices. Several automakers and charging companies are experimenting with vehicle-to-grid (V2G) technology that enables vehicles to send energy back to the grid.

Manufacturers of electric pickup trucks (like the Ford F-150) and other EVs have dived into bi-directional charging, but this technology makes even more sense for electric school buses because they have large batteries that sit most of the day. To illustrate this point, Thomas Built Buses partnered with Proterra to show two electric school buses can send 10 MWh total back to the grid, enough to power around 600 homes.

Senator King wants to capitalize on this ability with the BIDIRECTIONAL Act to promote the widespread deployment of electric school buses with V2G capability to improve community stability.

electric-school-buses-v2g-1
Electric school bus with V2G capabilities Source: Proterra

The BIDIRECTIONAL Act is designed to accelerate adoption of EV school buses while using them for more than just a ride to school.

According to Senator King, the BIDIRECTIONAL Act will:

  • Establish a Department of Energy (DOE) program to roll out electric school buses designed with V2G capabilities in communities that need them most.
  • Require the DOE to report on current V2G initiatives (such as Thomas Built and Proterra) while also requiring electricity providers to consider bi-directional integration.

Senator King commented on the initiative, stating:

Vehicle-to-grid school buses are another common sense tool that can help to create a reliable grid, promote clean energy, and cut costs for local towns and school districts.

Adding:

The BIDIRECTIONAL Act will assist school districts across Maine and America transition to electric buses and make sure these vehicles provide greater stability to their communities. Combined with electric bus investments in the Inflation Reduction Act, this will be an important step towards unlocking America’s clean energy future. It’s a simple, win-win bill and I hope it can get bipartisan support across Congress.

Several major electric school bus makers and other organizations are backing the bill, such as Blue Bird, Highland Electric, Lion Electric, Nuuve, Proterra, and Xcel Energy.

Electrek’s Take

Electric school buses with V2G are a no-brainer. Not only will they reduce greenhouse gas emissions, protecting the communities they serve, but they can also play a key role in providing energy stability to communities in need.

The Environmental Protection Agency (EPA) just announced it would be nearly doubling EPA clean school bus program funding to $965 million in its initial round . Federal funding is a huge first step, but strong state leadership is also necessary if these clean machines are going to become widely adopted. Virginia, for example, just surpassed 500,000 electric school bus miles driven thanks to a state initiative to roll out 13,0000 electric school buses in 2019. They now have the nation’s second largest fleet of electric school buses.

I believe Senator King is wise in proposing this bill. I truly believe electric school buses have unlimited potential waiting to be unlocked, and the BIDIRECTIONAL Act can do just that.

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US Gov’t set to spend $46 million to electrify container ports

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US Gov't set to spend  million to electrify container ports

Multi-million-dollar grants adding up to more than $46 million from the US Federal Highway Administration (FHWA) will help support electrification efforts at several American ports.

The Long Beach Container Terminal (LBCT) in Long Beach, California has received a $34.9 million grant from the FHWA to replace 155 on-site commercial trucks and buses with zero-emission vehicles (ZEV). The grant will fund both the purchase of new electric trucks and the necessary charging infrastructure to support them.

LBCT said the grant dollars will allow it to continue its multi-billion dollar investments in more sustainable logistical operations. “Our vehicle electrification project, coupled with previous investments, enables LBCT to achieve a unique status that is reframing the way the world views sustainable goods movement, enhancing community quality of life and climate change,” said Anthony Otto, CEO of LBCT.

Real progress at Port of Long Beach

Long Beach Container Terminal, photo by LBCT.

Back in 2018, Power Progress reported that the Port of Long Beach had plans to install zero-emissions cranes and cargo handling equipment at its terminals. True to its word, the port has invested more than $2.5 billion to convert its cranes and terminal tractors vehicles to electric equipment. It’s a project that LBCT says has led to an 86 percent (!) reduction in harmful carbon emissions.

“This investment is a huge win for clean air, electrification and the region,” said US House Rep. Robert Garcia. “These federal dollars will make our port cleaner, safer and help us meet our climate goals.”

In a separate announcement, charging infrastructure operator Voltera said that its sites in California and Georgia would receive $11.4 million of the FHWA funding.

Electrek’s Take

No matter what you call it… …yard dog, yard truck, terminal truck, hostler, spotter, shunt truck, yard horse, goat, mule … …Orange EV pure electric trucks deliver.
e-Triever terminal tractor; via Orange EV.

Container ports used to be some of the dirtiest, most heavily polluted areas in the world. That was bad for everyone – but it was especially bad for the people who lived and worked near them. That’s why any positive change is good. Beyond just “positive change,” however, ports today seem to be leading the way when it comes to electric vehicle and hydrogen adoption.

How things change!

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Kramer shows off electric wheel loader and telehandler at Intermat

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Kramer shows off electric wheel loader and telehandler at Intermat

German equipment manufacturer Kramer showed off a pair of zero-emission equipment options at the Paris Intermat show last week – the 5065e electric wheel loader and 1445e electric telehandler.

Kramer says the quiet operation of its new electric wheel loader and telehandler are ideal for noise-sensitive areas such as city centers, cemeteries and golf courses, hotels, and suburban parks and recreation areas, where it can operate without emitting harmful diesel particulate matter and other forms of air pollution.

Kramer-Werke GmbH is serious about promoting its new EVs in the French market. “That’s why Intermat is an important platform for us,” explains Christian Stryffeler, Kramer’s Managing Director. “We are also looking forward to showcasing our new generation of (electric) wheel loaders and telescopic wheel loaders here.”

Kramer 5065e wheel loader

The 5065e loader is powered a 37.5 kWh, 96V lithium-ion battery that’s good for up to four hours of continuous operation – which is a lot more than it sounds, considering idle time in an EV doesn’t drain batteries the way idling a diesel drains fuel. A 23 kW (30 hp) electric motor drives the electric wheel loader around the job site, while a 25 kW (approx. 35 hp) motor powers the machine’s 40 liters hydraulic system.

Kramer says the battery on its electric loader can be fully charged in just 5.1 hours using a “Type 2 Wallbox” (that’s an L2 charger to you and me). Max payload is 1750 kg, with a 2800 kg tipping load. Top speed is 20 km/h (approx. 12.5 mph).

Kramer 1445e telehandler

The 1445e telehandler uses a 96V battery architecture that’s similar to the one in the wheel loader, but in a smaller 18 kWh or 28 kWh pack. This enables a fleet manager to right-size their equipment’s batteries to provide four hours of run time in different types of work environments. And, also like the wheel loader, a 23 kW (30 hp) electric motor provides the drive while a 25 kW (approx. 35 hp) powers the hydraulics.

Level 2 charging comes standard on Kramer’s electric telehandler, enabling a full charge of the larger, 28 kWh battery in about five hours. Max payload is 1450 kg.

Electrek’s Take

Kramer 5056e electric wheel loader; image via Kramer.

It’s always good to see more manufacturers pushing out electric equipment options. It’s still the “wild west” out there, even more so than in automotive, and Kramer’s offerings seem to be a step behind in some ways (no DCFC capability) and ahead in others (96V where others are 48V), so it’s hard to know where they stand.

More than anything, the lesson seems to be that fleet managers need to choose wisely when they choose to electrify – and work closely with the dealers and OEMs to ensure that they’re buying the right tool for the right job.

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Watch this autonomous excavator build a 215 foot retaining wall [video]

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Watch this autonomous excavator build a 215 foot retaining wall [video]

The robotics experts at ETH Zurich have developed an autonomous excavator that uses advanced AI to help it complete high-skill tasks without a human operator.

Dry stone wall construction typically involves huge amounts of operator labor. Doing it right requires not just hours of labor, but hours of skilled, experienced labor. At least, it used to. If the crew at ETH is successful, building stone retaining walls will soon become a “set it and forget it” task for robots to complete. Robots like their HEAP excavator.

HEAP (Hydraulic Excavator for an Autonomous Purpose) is a customized Menzi Muck M545 developed for autonomous operation that uses electrically-driven hydraulics to operate an advanced boom arm equipped with draw wire encoders, LiDAR, Leica iCON site-mapping, and a Rototilt “wrist” on the end that makes it look more like a high-precision robotic arm than a traditional heavy equipment asset.

ETH HEAP tech stack

Image via ETH Zürich.

Which makes sense. After all: the ETH guys are roboticists, not skilled heavy equipment operators. So, how does their robot do against skilled operators?

“We are currently outperformed by human excavator operators in placement speed,” ETH researchers wrote in Science Robotics. “Such operators, however, typically require string and paint references with which to register their construction and often a second or third person outside the machine to provide guidance and to insert small supporting stones, gravel, and soil by hand and shovel. In contrast, our process can build complex nonplanar global surface geometries without physical reference markers, does not require a skilled driver or small supporting stones, and provides a full digital twin of the built structure for better accountability and future reuse.”

Translation: the robot is slower, but it gets the job done.

You can watch the ETH HEAP put all its onboard tech to work building a 215 foot long, 20 foot high retaining wall all on its own in the video, below.

Autonomous excavator constructs dry stone wall

The completed project can be seen at Circularity Park in Oberglatt, Switzerland, and illustrates the potential for autonomous equipment to build with irregularly-shaped materials. And with skilled operators in short supply everywhere, the potential to free up operators so they can go where they’re really needed.

Electrek’s Take

ETH Zürich’s robot excavator has been in development for years, with numerous white papers exploring its potential uses in construction and agriculture published on the company’s site. It’s quite a rabbit hole, as internet deep-dives go, and I highly recommend it.

That said, the electrically driven hydraulics and high-precision Rototilt wrist on the end of the boom arm’s “claw” alone make this futuristic excavator worth some attention. As more and more manufacturers switch to full electric or even “just” electric drive, research into better solutions for existing hydraulic equipment and expertise could lead to big market wins.

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