I run my electric tractor completely off-grid. Here’s my secret
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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National Grid Renewables has broken ground on its 100 MW Apple River Solar Project in Polk County, Wisconsin.
The Wisconsin solar farm, which will use US-made First Solar Series 6 Plus bifacial modules, will be constructed by The Boldt Company, creating 150 construction and service jobs. Apple River Solar will generate over $36 million in direct economic benefits over its first 20 years.
Once it comes online in late 2025, Apple River Solar will supply clean energy to Xcel Energy, which serves customers throughout the Upper Midwest. According to National Grid Renewables, the solar farm will generate enough energy to power around 26,000 homes annually. It will also offset about 129,900 metric tons of carbon dioxide emissions each year – equivalent to taking 30,900 cars off the road.
“We are excited to see this project begin as it underscores our dedication to delivering clean, reliable and affordable energy to our customers,” said Karl Hoesly, President, Xcel Energy-Wisconsin and Michigan. “This project is an important step in those goals while bringing significant economic benefits to Polk County and the local townships.”
Electrek reported in February that Xcel Energy, Minnesota’s largest utility, expects to cut more than 80% – and possibly up to 88% – of its emissions by 2030, putting it on track to hit Minnesota’s goal of net zero by 2040. It also says it’s on track to achieve its clean energy goals for all the Upper Midwest states it serves – Minnesota, Wisconsin, North Dakota, South Dakota, and Michigan.
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Tesla has announced that it will finally deliver 500 kW charging as it is about to install its long-awaited V4 Supercharger cabinets.
The rollout of Supercharger V4 has been a strange one, to say the least.
Tesla has been deploying the new charging stations for two years and calling them “Supercharger V4”, but it has only been deploying the charging stalls.
Supercharger stations are made of two main parts: the stalls, which are where the charging cable is located, and the cabinets, which are generally located further back and include all the power electronics.
For all these new “Supercharger V4”, Tesla was actually using Supercharger V3 cabinets. This has been limiting the power output of the charging stations to 250 kW – although
Today, Tesla officially announced its “V4 Cabinet”, which the automaker claims will enable of “delivering up to 500kW for cars and 1.2MW for Semi.”
Here are the main features of the V4 Cabinet as per Tesla:
- Faster charging: Supports 400V-1000V vehicle architectures, including 30% faster charging for Cybertruck. S3XY vehicles enjoy 250kW charge rates they already experience on V3 Cabinet — charging up to 200 miles in 15 minutes.
- Faster deployments: V4 Cabinet powers 8 posts, 2X the stalls per cabinet. Lower footprint and complexity = more sites coming online faster.
- Next-generation hardware: Cutting-edge power electronics designed to be the most reliable on the planet, with 3X power density enabling higher throughput with lower costs.
Tesla reports that its first sites with the new V4 Cabinets are going into permitting now. The company expects its first sites to open next year.
We recently reported about Tesla’s new Oasis Supercharger project, which includes larger solar arrays and battery packs to operate the charging station mostly off-grid.
Early in the deployment of the Supercharger network, Tesla promised to add solar arrays and batteries to all Supercharger stations, and Musk even said that most stations would be able to operate off-grid.
While Tesla did add solar and batteries to a few stations, the vast majority of them don’t have their own power system or have only minimal solar canopies.
Back in 2016, I asked Musk about this, and he said that it would now happen as Tesla had the “pieces now in place” with Supercharger V3, Powerpack V2, and SolarCity:
It took about 8 years, but it sounds like the pieces are now getting actually in place with Supercharger V4, Megapacks, and this new Oasis project.
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Hyundai has a new secret weapon it’s about ready to unleash. To revamp the brand in China and counter BYD’s surge, Hyundai is launching a new AI-powered EV next year. The new model will be Hyundai’s first dedicated electric car for the world’s largest EV market.
With the help of Haomo, a Chinese autonomous startup, Hyundai will launch its first EV equipped with generative AI. It will also be its first model designed specifically for China.
A Hyundai Motor official said (via The Korea Herald) the company is “working to load the software” onto the new EV model, “which will be released in the Chinese market next year.” The spokesperson added, “The level of autonomous driving is somewhere between 2 and 2.5.”
In comparison, Tesla’s Autopilot is considered a level 2 advanced driver assistance system (ADAS) on the SAE scale (0 to 5), meaning it offers limited hands-free features.
With Autopilot, you still have to keep your eyes on the road and hands on the steering wheel, or the system will notify you and eventually disengage.
Haomo’s system, DriveGPT, unveiled last spring, takes inspiration from the OpenAI’s popular ChatGPT.
The system can continuously update in real-time to optimize decision-making by absorbing traffic data patterns. According to Haomo, DriveGPT is used in around 20 models as it looks to play a bigger role in China.
Hyundai hopes new AI-powered EV boosts sales in China
Electric vehicle sales continue surging in China. According to Rho Motion, China set another EV sales record last month with 1.2 million units sold, up 50% from October 2023.
Over 8.4 million EVs were sold in China in the first ten months of 2024, a notable 38% increase from last year.
BYD continues to dominate its home market. According to Autovista24, BYD accounted for 32.9% of all PHEV and EV (NEV) sales in China through September, with over half of the top 20 best-selling EV models.
Tesla was second with a 6.5% share of the market, but keep in mind these numbers only include plug-in models (PHEV).
Like most foreign automakers, Hyundai is struggling to keep up with the influx of low-cost electric models in China. Beijing Hyundai’s sales have been slipping since 2017. Through September, Korean automaker’s share of the Chinese market fell to just 1.2%.
Last month, Hyundai opened its first overseas digital R&D center in China to help kick off its return to the region.
According to local reports, Hyundai is partnering with other local tech companies like Thundersoft, a smart cockpit provider, and others in China to power up its next-gen EVs
With its first AI-powered EV launching next year, Hyundai hopes to turn things around in the region quickly. The new model will be one of five to launch in China through 2026.
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