Can you really run an electric car, air conditioning, and electric oven simultaneously on this system?
Yes. The video demonstrates all three running at once with the TechEx battery setup. The 12000XP inverter can output up to 12,000W continuously, and the dual-leg 120V design allows you to distribute loads across two circuits. The key is having sufficient solar to recharge the batteries during the day.
At a glance
Length
17 min
Channel
Minute Man Solar
Video from
Jun 2026
Rating
⭐⭐ Great video · 2/2
Best for
DIY solar builders, off-grid homeowners, and RV dwellers wanting to cut installation costs and understand system design.
What this video answers
Can you really run an electric car, air conditioning, and electric oven simultaneously on this system?
What's the difference between UL-listed and non-UL-listed batteries?
Do you need a permit to install an off-grid solar system?
How much solar capacity do you actually need?
What if the battery runs out at night or during cloudy days?
Reads the guide aloud in your browser — free, no account.
Building a Complete Off-Grid Home Solar System on a Budget
This tutorial walks through installing a full off-grid solar setup for an entire house—capable of running air conditioning, charging an electric vehicle, powering electric appliances like dryers and ovens, and more—for approximately $13,500. The creator breaks down the three core components (inverter, battery storage, and solar panels) with specific product choices, wiring diagrams, and installation details, comparing the final cost to traditional installer quotes that exceeded $100,000.
The setup is designed for homeowners or those living off-grid who want energy independence without paying contractor markups. While the video emphasizes that DIY solar is legal and safe when done properly (and recommends consulting an electrician), it's particularly valuable for RV or mobile dwelling owners looking to understand battery banks, inverter sizing, and solar capacity planning. The creator demonstrates how much of the work is manageable for a novice with basic electrical knowledge.
Key Moments
Key Components and System Breakdown
12000XP off-grid inverter ($1,900) with dual 120V legs, smart-load relay for priority loads, and capacity for up to 24,000W of solar input
TechEx 48V 100Ah LiFePO4 batteries ($770 each) with integrated BMS, built-in display, and both parallel cables and stacking brackets included
24 bifacial 400-450W solar panels sourced for ~$100 each, with portable panel stands for flexible positioning
NEMA 14-50R AC outlet rated for 12,000W continuous output, replacing unsafe direct-wiring methods
Real-world performance: simultaneous operation of EV charging (Rivian R1S), electric dryer, air conditioning, and electric oven without battery drain
Optional grid-input capability (requires UL-listed batteries) for automatic fallback if the off-grid system depletes overnight
What You Need to Know Before Building
System architecture: The setup requires three integrated parts—inverter (output), batteries (storage), and solar panels (input)—wired in specific configurations with appropriately rated cables and connectors
Battery communication: TechEx batteries use CAN bus or RS485 protocols to communicate state of charge to the inverter; CAN connection is confirmed to work reliably with the 12000XP model
Permitting and safety: Only one small permit was required (for grid connection), but consulting a licensed electrician is essential to ensure all wiring meets code and safety standards
UL certification choice: Non-UL-listed batteries cost ~$700 less per unit but cannot be used with grid-tied automatic-switchover systems; UL-listed alternatives are available if grid backup is required
Wire sizing and outlets: AC output must use EV-rated NEMA 14-50R connectors (not standard household outlets) to safely handle 12,000W continuous power; battery cables require 1/0 AWG gauge with quick-disconnect Anderson connectors
Panel sourcing: The video recommends checking Facebook Marketplace for bifacial panels locally; prices have dropped significantly, making this an optimal time to source panels
Frequently Asked Questions About DIY Off-Grid Solar Installation
Can you really run an electric car, air conditioning, and electric oven simultaneously on this system?
Yes. The video demonstrates all three running at once with the TechEx battery setup. The 12000XP inverter can output up to 12,000W continuously, and the dual-leg 120V design allows you to distribute loads across two circuits. The key is having sufficient solar to recharge the batteries during the day.
What's the difference between UL-listed and non-UL-listed batteries?
Non-UL-listed batteries (like the TechEx models shown) are high-quality but haven't passed UL certification, so they cannot legally be used in grid-tied systems with automatic switchover. UL-listed batteries cost more but allow the inverter to automatically fall back to grid power if your off-grid system is depleted. For 100% off-grid (no grid connection), non-UL batteries work fine and save significant money.
Do you need a permit to install an off-grid solar system?
The creator pulled only one small permit specifically for connecting the solar system to the house. The exact permitting requirements depend on your local jurisdiction and whether you're connecting to the grid. Consulting a local electrician or building department beforehand is strongly recommended to verify what's required in your area.
How much solar capacity do you actually need?
The video shows 24 panels of 400–450W each, totaling approximately 9,600–10,800W of solar input. The 12000XP can accept up to 24,000W of solar input. More solar means faster battery charging and greater capacity to run high-demand loads during the day. Placement and local weather also affect how much usable energy you generate.
What if the battery runs out at night or during cloudy days?
If you're 100% off-grid with no grid connection, you simply rely on your battery storage and wait for sunny days to recharge. If you have grid access and use UL-listed batteries, you can wire in a grid input so the inverter automatically switches to utility power when the battery is depleted, then switches back to off-grid once solar recharges the batteries.
This video is genuinely useful if you're considering off-grid power or building a mobile dwelling with serious electrical demands. It cuts through the sales-pitch fog surrounding solar installation by showing actual component costs, wiring specifics, and realistic performance (running an EV, AC, and electric oven together isn't theoretical—it's demonstrated). The breakdown of inverter features, battery communication protocols, and why connector choice matters separates this from generic solar content.
What stands out most is the honesty about permitting, the detailed explanation of why non-UL batteries work fine for pure off-grid systems (saving hundreds), and the practical advice on sourcing panels locally. If you're serious about energy independence and willing to do the installation yourself (with proper electrical oversight), this tutorial delivers actionable specifics. Highly recommended for anyone ready to move beyond grid dependency.
I started Helicopterstour.com because I genuinely believe there’s no better way to see the world than from the sky.
I used to work on the Pride of America cruise ship in Hawaii, helping guests book shore excursions all over the islands.
Two Vacation Hero Awards
2,000+ Guests/Week
Pride of America · NCL
Hawaii Shore Excursions
1000+ Tours Reviewed
I took my entire house 100% off-grid. I am able to run my electric dryer, air conditioning, charge my electric vehicle, power my electric oven, as well as the rest of my house reliably with this affordable DIY solar setup. Watch the video to see how this entire project can be done for only about $13,500!
---Inverter:
►12000XP Off-Grid Inverter: https://signaturesolar.com/eg4-12000xp-off-grid-inverter-v2/?ref=minutemansolar&search_query=12000xp&searchid=2036496
►4-Square Box
►4-Square Box Faceplate
►12,000W EV Outlet
►1 inch Meyers Hub
►1 inch Chase Nipple
►1-1/2 to 1 inch hole reducer
►1 inch plastic bushing
►1/0 AWG w/SB175 Quick Disconnect Battery Cables: 1/0AWG 1ft cable SB175 (side #1: gray| side #2: no connectors)
►10 AWG Solar Input Wire Set 1ft
►AC Input NEMA 14-50P Cord 6 AWG
---Battery:
►Techex Server Battery (Non-UL Listed): https://www.techcellapower.com/products/upgraded-versiontechex-48v-100ah-lifepo4-battery-100a-bms-with-inverter-communication-3u-rack-mount-wifi-bluetooth-smart-display-fire-suppression-max-5-12kw-power-output-for-off-grid-solar-system-backup
►Rich Solar Server Battery (UL Listed): https://richsolar.com/products/alpha-5-pro-48v-100ah-lifepo4-battery?ref=mms&variant=40459924799537
►Sun Gold Power Server Battery Rack: https://tidd.ly/4kzc5u7
►1/0 AWG w/SB175 Quick Disconnect Battery Cables: https://batterycablesusa.com/0-gauge-anderson-cable?preSelOpt=5518,759,753&AffId=54
---Solar:
►450W Bifacial Solar Panels: https://tidd.ly/4rIE1O0
►Portable Solar Panel Stands: https://poweredportablesolar.com/product/portable-solar-panel-stand-legs/
Time stamps:
0:00 Don't Get Ripped Off
1:12 Inverter Cost & Setup
4:39 Battery Cost & Setup
10:43 Solar Cost & Setup
13:24 How it Runs My House
16:09 Why I Like This So Much
Video transcript for “I Took My House 100% Off Grid For SUPER Cheap [Breakdown]” Accessibility
A full written transcript of this video, provided for accessibility. Select any timestamp to jump the video to that moment.
Electricity prices are going up like crazy, and I wanted to be 100% self-reliant with my electricity. So, I got a quote to get solar on my house so that I could have that, and it was over $100,000. But, in a recent video that I did, I showed you how I was able to do that for 1/4 of the cost at only
$25,000, and that's being 100% self-reliant. But, in this video, I'm going to cut that again in half. So, it's going to be about 1/8 of the cost of what the solar company quoted in order to be completely self-reliant. With this setup, I'm able to run my air conditioner cuz now it's
hot out. I'm also able to charge my electric vehicle, which is a Rivian R1S Max Pack, which has the biggest battery pack of the Rivian SUVs. I have two washers and dryers. One of them is electric, and the other one is gas. I'm able to run both of these as well. And the last really big load that I have in
my house is my oven because it, too, is electric. So, I'm going to go over exactly what components I'm using that are really good quality in order to have reliable, self-sufficient energy. But, in addition to that, I'm going to show you another way where you can save even more money on this exact setup. None of
this is illegal. It's perfectly fine to do. You should always consult with an electrician to make sure you're doing everything safe. There's only one really small permit that I pulled just to be able to get the connection from the solar setup into my house. I'm going to show you exactly how I did it. A solar
system is made up of three parts. That's the output, the storage, and the input. The output is the inverter. The storage are the batteries, and then the input is the solar. I like the 12000XP in general because it's a very good price at only $1,900 right now, but it also has some
amazing features that pretty much no other inverter of the same capacity have. That extra special feature is this breaker right here. You might be able to see it, but under here it says smart load. Let's say that I want to run my Bitcoin miner only once the batteries are full and all of the house is already
taken care of. That way, my Bitcoin mining doesn't take away from my house having electricity. I can set up my own outlet that sticks out the the of this, and I plug my Bitcoin miner into that. Now, only when I have excess will the Bitcoin miner run, and it will automatically shut off based on the
parameters that I put in the inverter here. One of the other things that I really, really like are how many solar inputs there are, and being able to have up to 24,000 W of solar input is absolutely insane. And this is actually far easier to wire than you would expect. Pretty much any
novice can do that. So, let me show you all that's required to get this up and running to run my whole house. We'll start with the output. You can see this breaker here, right behind here, it says load. So, I have my leg one as my black and my leg two as my red, and this is just six-gauge wire. You could bump it
up to four-gauge wire if you wanted to be extra safe, but six-gauge is rated for this amount of power. You'll see that the white comes up and it goes to this big bus bar right here in the back. That is the neutral bus bar, and then the ground wire comes around and goes over here to the grounding bus bar. The
main thing here that's really important is that your AC output is properly rated. You can't tell right now because I have this big plug in here, but they call this a four-square box. It's just a metal box I picked up from Home Depot, but I got an EV or electric vehicle rated NEMA 14-50R
connection right here because that is the connector that's actually capable of running 12,000 W constantly and not melting. Originally, I had just taken this cable and these wires and wired it directly into here, and that was working fine, and then I realized that's really unsafe. And ironically, these cost about
the same, so you might as well go with this. I'll have links down below to what I bought. Now, if I do want to charge from a generator, I have this NEMA 14-50P. It's P cuz it's a plug or it has prongs wired in to the grid input. You can see I still have black as my leg one and red as my leg two. The white
goes over to the neutral bar, and then the green over to the ground bar. For the battery input, these are actually one aught cables because that was the thickest I could get that have these SB175 connectors on them. And so, I've wired those directly into this bus bar here for the battery, and now I actually
have a quick disconnect from the whole battery bank. So, if I want to use this inverter with a different battery bank or these batteries with another inverter, this gives me that capability by having this quick disconnect. And just like I mentioned with the solar input, I just made two sets of wires
coming out each one of these and they're going into each PV input. If this is at least your second time on the channel, hopefully that means you'll subscribe because you're finding this information helpful. And if you've made it this far in the video, then hopefully you'll smash the like button as well. But all
of the links to everything that I'm using are going to be in the description and the first comment down below. So, that's the inverter and that's the AC output. But I want to get into what's the most expensive part of the entire system, and that is the battery setup. There's a trick with the batteries and
that is that you either have to choose to be UL listed certified or not UL listed. There are many non-UL listed batteries that are UL quality. They simply have not gone through the UL certification process and therefore cannot work in conjunction with the grid. This inverter has the ability to
have a dedicated grid input. So, that way if your battery and solar system dies, say at 3:00 in the morning after it's drained for some reason, it will automatically kick back to grid power. And then once the solar recharges the batteries, it will switch back to off-grid power. And if you're going to
do a setup like that, you must use UL listed batteries. I'm not doing that setup here and so using these more affordable batteries that are still very high quality, I was able to save like $700 per battery and that makes a huge difference. The first thing I want to point out is this battery rack. I bought
this from SunGold and I really like it. You have to assemble it. That part super sucks. But for $750 or so, you get this whole enclosure and you can fit pretty much any battery. Now, you may have seen my other video where I tested these Humless batteries and they're good, but I think I might have actually found a
better one. And those are the Tech X batteries. These are the same price as the Humless or cheaper, but now you actually get a screen with the ability to adjust all of the communications so that way you can get it to work with pretty much any inverter. So, for example here, I can go into the RS485
connection, which is this one here, or the CAN bus connection. I have found that for the 12,000 XP, I have to use the CAN connection in order to get what's called closed loop communication. That just means that you actually get to see the battery percentage on the screen and in the app. Whereas, if you're using
open loop communication, you're just using the voltage of these batteries to determine roughly what state of charge the batteries are at. So, I made a mistake early on with these cables. I got myself backwards because I saw ah, these red cables over here from these other batteries. And so, obviously, this
was already my positive bus bar, but on these batteries, the black or the negative is actually on the right side. So, I had originally connected these black cables to the positive bus bar, and luckily, because of all the BMS protection in these, it didn't cause a problem at all. Same with the inverter,
there was no issue when I made the mistake. And I didn't like how long the cables were that came with the batteries at first. And so, I shortened them and cut them down to my own size so that this was going to be nice and clean. And then in the end, I realized that I did have to jump from the left side all the
way to the right side. And so, what I did is I bought these four gauge rated Polaris taps. A Polaris tap is just a way to take a thick cable and join it together. So, I ended up putting the cables back together. You might as well just leave them how long they come. And the short communication cable that comes
with the batteries wasn't long enough for me because of how I set up this server rack. Technically speaking, I could actually fit seven batteries in here because these batteries are not really tall. Some of the other batteries that I've used were really tall and pretty much don't work with any other
rack, and that's a huge frustration. These are actually quite short, and so I have tons of airflow through here, so I'm not worried about overheating at all. But, I did have to get longer communication cables, and I just bought these. They're like a couple of dollars each on Amazon. So, currently these
batteries are about $770 each, and if there are coupons that I have for it, they'll be linked down below. But, you can see here, these are the dip switches, and you just follow the user manual to tell you what position to put these in so that way these can have proper communication. But, then here you
have a state of charge indicator, and then if there's an issue like miscommunication, this alarm light will start flashing. This is the breaker to turn on the whole system, and then this power button will control all of the units. Once they've all been programmed together, you just have one power button
for the whole system. Probably the biggest thing to know with these communication cables is that from top down, you actually start in communication port B, and then you come down to port A, and then B to A, and so on. There are two other really nice things that I really like about these
TechEx batteries more than pretty much any other battery right now. And the first one is that they also include these cable whips, and these are to be used if you're not using a third-party server rack. But, you can actually take this whip and connect between two batteries, and you just keep stacking
all the way up, and you can make one big massive battery pack by using these parallel cables. So, these come with every battery in addition to the really long wires. So, you have both options in the box at no extra cost. But, in addition to that, they include these special brackets, and these clamp onto
the side of the TechEx batteries. But, what's cool is they have these little index points, so you can actually stack the batteries directly on top of each other. So, if you just went to Harbor Freight and got one of the 1,000-lb rated furniture dollies. They're like $30. You could put six batteries all on
top of that using these and have your own mobile battery setup that's going to be super compact. And if you just went with this option, which is already included, you wouldn't have to buy this $750 rack. So, just another way that TechX is helping this whole system be more affordable. Now, these Humless
batteries are not turned on right now. I am not using them in conjunction with the TechX. This test has all been done with the TechX batteries and they have worked phenomenally with zero issues at all. I've had zero heat issues, zero communication issues except for when I was doing RS485. As long as you use the
CAN communication, then it works great. I can't recommend these batteries enough, but they're not UL listed. So, if you're going to do the grid-tied setup where the grid automatically takes over, you're definitely going to have to look for another battery and I'll put my recommendation down below. I can see
that my battery is at 100% state of charge. If I didn't have the communication, I would just have to look at this voltage and personally know that at 54.6 V that this is actually full. Now, getting onto the third part, solar is the lifeblood of the whole system. Now, in this case, I've got 24 400-W
bifacial solar panels. I really, really like these. I found these super cheap for about $100 each and there are better ones that are 450 W each and actually have a lower voltage. But, you really should just be checking Facebook Marketplace and see if you can get some bifacial 400 to 450 W panels for really
cheap locally. Now is actually an amazing time to get solar because these panels have never been cheaper. But then, the next trickiest thing is where do you put the solar panels? Cuz if you put them up on the roof, you have to get both a structural permit as well as an electrical permit and then you also have
to get it inspected and use rapid shutdown devices like DC optimizers on these in order to be able to use them on your roof. I didn't want to go through that hassle cuz I'm trying to do this as affordably as possible. So, that's why I have everything mounted on the patent pending Minute Man Solar Portable Panel
Stands. These stands are actually not intended to be used forever outside, but the materials used and everything that's all a part of this is actually rated to 25 years of constant outdoor use. And you can see my yard is not flat. I got weeds growing everywhere. It is a total mess. That's cuz we moved into this
house like 6 or 7 months ago and it didn't come with a yard. So, I still have to do all of the landscaping on this. And so, in the meantime, having these fully adjustable stands makes it really easy to work on pretty much any terrain. When you get the Minute Man Solar Stands, you get what I call the
upper legs. And if you get that, then the bottom edge of the panel just rests on the ground. But because I've got so many weeds here and because I'm in Idaho where I get snow during the winter, I added the lower legs. So, that way if it snows, the snow will fall off the front. If there's weeds growing, I have plenty
of room before the weeds start to cover the panels. On average, 75% of people who order the panel stands add the lower legs because they don't want to have to worry about dirt and leaves and snow building up on the bottom of the panel. This H bracket here is one of the newest additions. Every kit is now including
these. And when you put all of these together, it becomes super strong. But you see that weather station right there? I specifically put that in for one main reason. And that's for getting tracking on what kind of wind these solar panels have gone through. You'll notice these panels here don't even have
the H bar on them because this was the older model and I've just not upgraded them. And these have gone through 70 mile an hour winds where the wind was coming from this direction, the worst case scenario. And I've not adjusted these since I installed these months ago. And the front row was actually at
my old house running that. So, they've been in operation for more than a year non-stop. From the inverter, we're going to this EV outlet and I have it on this NEMA 14-50P to SS250R cable that runs across my garage and then comes into this generator inlet port. This was like 30 or 40 bucks off
Amazon, and this is the SS250R connection. It's twist locked into here, and I ran a six gauge cable going from this inlet all the way through my attic into my basement. And then inside of my electrical panel, I installed this small device here, which is called an interlock kit. Every electrical panel is
going to be a little bit different, so you do have to find the kit that's specific to your panel. Mine's a Square D, so I got a Square D interlock, but you can see that my grid power is in the off position, and this 50 amp breaker is in the on position. So, the 12,000 XP system is running right into here and
now supplying power to both of these electrical panels, and over here is my EV charger. I'm able to run 100% of everything just fine, and I specifically turned off the air conditioner to show you that I can turn and run it without a problem. And there's one trick to do this that will make it work with this
system. So, I'll show you that here, but right now the system is off. I'm going to go ahead and turn it on. I don't know if you can hear the background noise, but the handler's actually right behind you, and so we are now blowing cold air. And because I'm doing closed loop communication with the TechX batteries,
I can see exactly what's going on here. So, I can see that entirely the whole house is pulling about 4,200 W. From the batteries, it's pulling 2,700, and from the solar, it's pulling about 1,600. And that makes sense cuz it's almost 6:00 in the evening. But the reason that this works so well is because I'm using a
MicroAir Flex AC soft start device. This unit right here, I tied into four different wires. I just took the orange wire to the herm on the capacitor, and then I took the black wire and put it on top of where the black connection is on the switch, and then I spliced into this yellow wire that goes from the switch
all the way to the compressor inside the air conditioner. And so, I spliced on this white wire and this brown wire onto that yellow wire, and now I went from 120 amps of starting power all the way down to about 34 amps, which is just under 9,000 W. So, that makes it really easy to stay within the surge capacity
of the 12,000 XP inverter, allowing me to run my air conditioner. So, I paid about $400 for that MicroAir device. It's worth every penny. So, this entire system is only about $13,500 if you get six of these batteries. I'm actually only running three of them right now, but I really wish I had three
more of these because I like these a lot better than any of the other server batteries I've tested, especially for the non-UL listed kind. They're literally the cheapest ones that I can find right now, and they are not cheaping out on quality. This is my live bill right now from Rocky Mountain
Power, and you can see for the last few days it's not fully updated, and I don't know why there are any bars here cuz I have not been pulling any power from the grid, but you can see how this has completely dropped off by using this setup. I would say that if you don't have an electric vehicle, and if your
house doesn't use any electrical heat, such as the water heater, the dryer, the oven, and so on, if that's all propane or natural gas, you can actually probably get away with just a 6,000 XP, but surprisingly the 12,000 XP is not much more in cost, and you get way bigger benefits with more solar as well
as having bigger battery input, and especially the smart load. So, there's not really a reason to spend $100,000 from a solar company to have this kind of dependability unless you don't want to do any of the work, at which point definitely go with them. And if this seems too complicated and you want
something even simpler, that's why I made this video, so that way you can still go off-grid completely affordably. So, that's the decision that you'll have to make on which system's the right for you. I definitely really like this setup, and I want to get a lot more of these Tech X batteries because they're
so good. Then, comment down below which way you think you would do this.
Every video on Helicopterstour.com is hand-picked and reviewed by Justin — nothing is added automatically. Each one gets an original written guide and an honest rating: ⭐ 1 out of 2 means a good video worth your time, and ⭐⭐ 2 out of 2 means a great one we would recommend to anyone. The videos belong to their creators — every page links back to the original channel so you can subscribe and support them.