In what continues to feel like the ultimate tool hack, I’ve been running my electric tractor completely off-grid. I haven’t paid to charge it in months and it feels like I’m somehow cheating, always having the power of heavy machinery at my fingertips with absolutely zero fuel cost.
Here’s how I wake up to a full “tank” every day, for free.
Having an electric tractor has been incredibly useful on my family’s homestead where I keep it. It’s actually an articulating wheel loader, and so it does plenty of jobs beyond mere pulling tasks, including various material handling, hole digging for tree planting, trench digging, moving pallets and heavy equipment around, spreading mulch, moving compost, grading surfaces, etc.
Because it’s electric, I don’t have the major maintenance issues of a diesel tractor, and it’s just a lot nicer to use every day because it’s not loud, smelling of exhaust, or creating an uncomfortably hot working environment on days that are frankly already too hot.
On the other hand, I can’t just keep fuel cans around to instantly top it up whenever I want. With a run time of 4-6 hours per charge, it handles our needs but still needs to be charged back up regularly.
But as you can imagine, I don’t always want to rely on a wall outlet that is several acres away. As an alternative, I decided to create a charging shed out of a 20-foot shipping container.
I wrote an entire article on building the charging shed, so you can check that out for more details on the build on the build process. But to summarize, the container has 1,200 watts of solar panels on top that feed an 8 kWh battery bank inside it.
Compared to trying to build a new barn or install a prefab metal building, this shipping container is much, much cheaper.
The actual container cost me around US $3,000, and I just had to do the legwork of moving it out into the pasture by using a set of EZYwheels that let me tow the whole thing like a trailer (behind the tractor it would soon be charging, no less!).
Towing roughly 6,000 pounds (approximately 2,700 kg) across a bumpy pasture isn’t for the faint of heart, but it seemed to work just fine when you go slow and the ground isn’t too wet to get traction.
Once in place, the container creates both a place to store the tractor so it’s not out exposed to the elements and a place to charge it up during the day.
The total battery capacity of my wheel loader is actually slightly larger than the battery capacity in the container. There’s 8 kWh of storage in the container but 9 kWh in my wheel loader, though I never really run the loader all the way to empty so it’s easy enough to charge it just from my stored energy. And I never worry about not having enough charge left in the container because it is charging itself from the sun every day.
In strong sun, I can get over 800 watts of continuous charging into the container’s battery bank, though on cloudy days that can drop to just 100-200 watts. Fortunately, the 8 kWh is enough to hold me over on cloudy days, and it’s not like I’m using the tractor commercially. It gets a few hours of use each day, whenever we’ve got tasks on hand that require it.
I originally had a small portable air conditioner in the container to try and keep things inside from baking like an oven, but I found that the white paint of the container kept it from heating up too much in the sun. Plus the 1,500 W of power that the air conditioner was pulling was really chewing into my stored energy, depleting my battery bank overnight. Ultimately I decided to deep six the A/C and instead I will likely look at a smaller and more efficient mini-split in the future.
However, I still wanted to keep the container from getting too humid as a way to protect the various electric vehicles I park in there. So, in place of the A/C unit, I put in a single-room dehumidifier that pulls around 100 W from my container’s batteries. It works great to keep the humidity down but barely makes a dent in my battery bank’s charge level!
With this setup, I’ve created an entirely off-grid system where my electric tractor is always powered by solar energy. The tractor would already have been pretty cheap to charge from a wall outlet back at the house or garage building, costing around a dollar and a half to refuel it each time the batteries are empty. However, by using a solar-powered setup, now it’s basically free to charge (not including the initial expense of the solar setup, of course).
For me, this was never an exercise in trying to save money though, largely since the cost of charging electric vehicles at home is already so incredibly cheap. Instead, it was about creating a convenient way to charge and store these types of vehicles, and it allows me to also keep my e-bikes, e-scooters, and other e-tools out of the weather and fully charged up. For example, we just got an electric chainsaw and now I can run that off-grid as well.
In a pinch, I could probably use the container as emergency power after a bad storm, assuming the solar panels haven’t blown into the next area code (this was a DIY build and it’s definitely not hurricane-rated). And if so, at least the batteries will still hold a charge until they’re depleted!
This might not be the best solution for everyone, but it worked well for my use, creating dual purpose weather-proof storage and off-grid charging in a single structure. The system could obviously be scaled up or down for larger or smaller needs, and has the advantage of being highly customizable for different requirements. If someone only wants to keep their e-bikes charged up off-grid, a much smaller solar array and battery bank would be sufficient. For someone wanting to run their Tesla off-grid, a significantly larger system would be needed.
The sky is the limit. And it’s the energy source, too!
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Construction and mining giant Caterpillar has reached a major milestone for its autonomous haulage system (AHS), reaching one million tons (!) of aggregate hauled by the company’s massive self-driving trucks.
The milestone was reached as part of an ongoing collaboration between Cat and Luck Stone’s Bull Run Quarry in Chantilly, Virginia to help demonstrate the worth of Caterpillar’s in-house AHS solution, and goes a long way towards proving to doubters of autonomous technology that AHS has what it takes to safely and dependably operate in a working quarry.
Reaching the one million tons hauled autonomously milestone confirms that autonomous haulage can deliver consistent, repeatable performance. It also signals how autonomous solutions will address skilled labor shortages, improve site safety, increase operational efficiency, and upskill quarry employees to run autonomy.
With the success of the Luck Stone pilot at Bull Run, however, that mining/quarry imbalance may not be the status quo for much longer.
“This milestone is a powerful demonstration of what’s possible when we collaborate with our customers to deliver solutions for their critical needs,” explains Denise Johnson, Caterpillar Group President, Resource Industries. “Reaching one million tons hauled autonomously at Bull Run shows that autonomy isn’t just for mining – it’s scalable, reliable, and ready to transform the aggregates industry. We’re proud to collaborate with Luck Stone to lead that transformation.”
Caterpillar hopes the Bull Run project sets a precedent for the broader aggregates industry, and they continue to explore opportunities to expand autonomy across additional Luck Stone sites and operations.
The 30% federal solar tax credit is ending this year. If you’ve ever considered going solar, now’s the time to act. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them.
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The Northwest Seaport Alliance has announced the recipients of its inaugural incentive program for zero emission drayage trucks – and they’ve turned to the logistics experts at Zeem to deploy 19 battery electric semi trucks to serve the Seattle-Tacoma gateway.
The Northwest Seaport Alliance incentive program is funded by a $6.2 million grant from the Washington State Department of Transportation (WSDOT), and will see bring 19 zero emission Class 8 semi trucks (like the Kenworth T680, shown) and their associated charging infrastructure to the Puget Sound region.
“We are thankful to the Northwest Seaport Alliance for helping the region adopt electric trucks, and we invite truck operators to experience how well they are matched to the job of hauling drayage,” says Paul Gioupis, CEO of Zeem Solutions. “We have served truck fleets for several years, and our goal is to make it a compelling business decision for fleets, that is both economically and environmentally sustainable.”
19 trucks, hundreds of charging customers
NWSA announcement event, via Zeem.
In a bid to help make electrification an even more compelling option for PNW truck fleets, the new Zeem facility won’t just serve its fleet of 19 electric semi trucks – the project also includes a charging depot that will be able to serve up to 250 electric vehicles per day, with overnight parking capacity for up to 70 vehicles, including heavy-, medium-, and light-duty vehicles.
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“Nearly 4,000 short-haul trucks serve the ports of Seattle and Tacoma, traveling to nearby distribution centers and warehouses,” reads the official press release. “… operators will be able to switch to electric trucks and charging without the large amount of upfront capital typically needed for heavy-duty EVs and charging infrastructure.”
The charging site will be located near the new I-5 exit ramp just south of SeaTac Airport, along SR-99 (International Blvd./Pacific Hwy.), convenient for nearby warehouse and distribution centers that see a large volume of truck deliveries.
Electrek’s Take
Drayage trucks are typically heavy-duty Class 8 trucks that work short haul routes from ports to warehouses or loading facilities. They frequently travel back and forth along local roadways, meaning they have a high impact on air quality in a given area. And, depending on who you believe, truck emissions represent about 6% of all seaport-related diesel pollution and about 30% of all seaport-related climate pollution in the Puget Sound region – emissions that disproportionately impact communities living near port operations and along freight corridors.
As such: more electric drayage is more good news.
We had a chance to talk to Zeem CEO, Paul Gioupis, as one of our guests on Quick Charge last summer, and a lot of that discussion is still relevant today. Give it a listen (above), then let us know what you think of all this in the comments.
SOURCE | IMAGES: Zeem Solutions.
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The California Senate dropped a controversial provision of an upcoming solar law which would have broken long-standing solar contracts with California homeowners after significant public backlash over the state’s plans to do so.
For several months now, AB 942 has been working its way through the California legislature, with big changes to the way that California treats contracts for residential solar.
The state has long allowed for “net metering,” the concept that if you sell your excess solar power to the grid, it gives you a credit that you can use to draw from the grid when your solar isn’t producing.
Some 2 million homeowners in California signed contracts with 20-year terms when they purchased their solar systems, figuring that the solar panels would pay off their significant investment over the coming decades by allowing them to sell power to the grid that they generated from their rooftops.
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But this has long been a sticking point for the state’s regulated private utilities. They are in the business of selling power, so they tend to have little interest in buying it from the people they’re supposed to be selling it to.
As a result, utilities have consistently tried to get language watering down net metering contracts inserted into bills considered by the CA legislature, and the most recent one was a bit of a doozy.
The most controversial point of AB 942 was that it would break rooftop solar contracts early. At first, it was going to break all existing contracts, then was limited to only break contracts if a homeowner sells their home. The ability to transfer these contracts was key to the buying decision for many homeowners who installed solar, as the ability to generate your own power and lower your electricity bills adds to a home’s value.
This brought anger from several rooftop solar owners and organizations associated with the industry. 100 organizations signed onto an effort to stop blaming consumers who are doing their best to reduce emissions and instead focus on the real causes of higher electricity, which the groups said are associated with high utility spending and profits.
It also resulted in several protests outside CA assemblymembers’ offices, opposing the bill. And California representatives received a high volume of comments opposing the plan to break solar contracts.
But, as of Tuesday, the language which would break rooftop solar contracts has been removed by the CA Senate’s Energy Committee, chaired by Senator Josh Becker, who led the effort. Language which blamed consumers for utility rate-hikes was also removed from the bill, according to the Solar Rights Alliance.
The bill is still not law, it has only moved out of the Energy Committee. But bills that advance through committee in California do not usually meet a significant amount of debate when they come to a floor vote, due to the Democratic supermajority in the state. It seems likely that if this bill advances to a vote, it will pass.
Electrek’s Take
The bill is still not perfect for solar homeowners. It disallows anyone with a yearly electricity bill of under $300 from getting the “California Climate Credit,” which is a refund to state utility customers paid for by California’s carbon fee on polluting industry.
The justification is thin for removing this credit from homeowners who are doing even more for the climate by installing solar… but it turns out that limitation probably won’t affect many customers, because most solar customers will still pay a yearly grid connection tax of around $300/year, and most solar customers still have a small electricity bill anyway at the end of the year.
Now, the question of a grid connection fee is another point of possible contention. This has been referred to as a “tax on the sun” in some jurisdictions, and it does feel like an attempt to nickel-and-dime customers who are contributing to climate reductions and should not be penalized for doing so. However, there is at least some rationality in the concept that they should pay to use infrastructure (but then… isn’t that the point of taxes, to build infrastructure for people to use?).
In short, even if it’s not perfect for every solar homeowner, we can consider this a win, and an example of how, at least with functional governments (unlike the US’ one), the public can and should be able to stop bad laws, or bad portions of laws, with enough public effort.
The 30% federal solar tax credit is ending this year. If you’ve ever considered going solar, now’s the time to act. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them.
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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