what going off grid actually costs
People ask what this costs. I'm going to tell you exactly, because nobody told me and I wish they had.
This isn't a buying guide. I've got a whole page for that. This is my personal ledger. Three years of receipts, mistakes, upgrades, and propane bills. The real number, not the one some dealer quotes you over the phone while leaving out half the line items.
I kept every receipt. My wife thinks that's obsessive. She's not wrong, but it means I can tell you to the dollar what this life costs.
the full ledger
Everything I've spent from the day I decided to go off-grid through today. Three years. One property. One family of four trying to never depend on the utility company again.
| Item | Cost |
|---|---|
| 22kW standby generator (Generac) | ~$6,200 |
| Automatic transfer switch | ~$1,100 |
| Installation (electrician, concrete pad, gas line) | ~$4,500 |
| 500-gallon propane tank + initial fill | ~$2,800 |
| Propane refills (3 years) | ~$3,200 |
| Portable generator (the first mistake) | ~$400 |
| Portable power station (EcoFlow) | ~$1,600 |
| Solar panels (backup array) | ~$3,800 |
| Transfer switch upgrade | ~$900 |
| Maintenance and parts (3 years) | ~$1,500 |
| Miscellaneous (cords, fuel stabilizer, covers, shed mods) | ~$1,200 |
| Total | ~$27,200 |
Call it about $28,000 when you round up for the stuff I forgot to write down. The gas station coffee on the way to pick up parts. The extra trip to the hardware store because I bought the wrong gauge wire. The beer I owed the neighbor for helping me pour a concrete pad in August.
the story behind every line
the portable generator ($400)
This was my first generator, and I've written about it before. A 3500-watt portable I bought during a panic. I ordered it off Amazon at 11 PM after the power had been out for six hours and my daughter was sleeping in our bed because her room was too cold.
It worked. Barely. I ran extension cords through the house like some kind of electrical spider web. My wife tripped over one at 2 AM going to the bathroom. The thing was loud enough that I'm pretty sure the neighbors thought I was running a sawmill. It kept the fridge cold and a few lights on and that was about the extent of its usefulness.
I don't regret buying it. I regret thinking it was a solution instead of a bandaid. It's still in the shed. I use it maybe once a year for something unrelated to power outages.
the standby generator ($6,200)
A 22kW Generac. This is the backbone of the whole operation. It sits on a concrete pad next to the house and runs on propane. When the power goes out, it starts automatically. I don't have to do anything. I don't have to be home. I don't have to be awake.
I spent months researching this. Generac vs. Kohler vs. Briggs & Stratton. The Kohler was quieter. The Generac had better dealer support in my area, and when you live rural, dealer support isn't a luxury. If you want the full comparison, I wrote up the best whole-home generators based on what I learned.
The $6,200 was just the unit. That number on its own is meaningless without the next few lines.
the automatic transfer switch ($1,100)
This is the thing that detects when the grid drops and tells the generator to fire up. It's also the thing most people don't think about when they see "generator" prices online. The switch is non-negotiable. Without it, you're back to running extension cords, which defeats the entire purpose of a standby unit.
installation ($4,500)
Electrician. Concrete pad. Gas line run from the propane tank. Permits. This is where the real money hides. The generator costs $6,200. The installation costs $4,500. So you're at $11,800 before you've bought a single gallon of propane.
I got three quotes. The cheapest was $3,200 from a guy who wanted to skip the permit. The most expensive was $6,100 from a company that included a five-year service plan. I went with the middle guy. He pulled the permit, did clean work, showed up when he said he would. That's all I ask.
Could I have done some of this myself? The concrete pad, sure. The gas line and electrical work, absolutely not. Not because I'm incapable but because propane and high-voltage wiring are two things I prefer to let a professional handle. I've got a family in the house.
the propane tank and fuel ($2,800 + $3,200)
The 500-gallon tank plus the initial fill ran about $2,800. Propane prices have bounced around over the three years I've been tracking this, so I'll just say I've spent another $3,200 on refills. That's roughly $1,100 a year in propane, which includes both the generator and the propane we use for the stove and water heater.
If I'd gone with natural gas, the fuel cost would be lower but I'd need to be on the gas line. I'm not on the gas line. That's sort of the whole point of this exercise.
If you're sizing a system, factor in fuel as a recurring cost. Most people think about the purchase price and forget they're signing up for a fuel bill that never stops.
the portable power station ($1,600)
An EcoFlow unit. I bought this as an intermediate step between the portable generator and the standby. It's silent, it charges from a wall outlet or solar, and it can run the fridge and a few lights for about eight hours.
I still use it. It's great for short outages where firing up the Generac feels like overkill. If the power blinks off for two hours, the battery handles it. If it's going to be off for a day, the generator takes over. They complement each other well. I wrote about this tradeoff in the generator vs. battery backup comparison.
Was $1,600 too much? Probably. You can get a decent unit for $1,000-$1,200 now. Prices have come down since I bought mine. But it's been worth every dollar in convenience.
the solar array ($3,800)
A small backup array. Not enough to run the house, but enough to keep the battery station topped up during extended outages. This was a year-two addition after a four-day outage where I burned through more propane than I liked.
The solar isn't my primary anything. It's a backup to the backup. But during long outages, it means the battery stays charged without running the generator 24/7, and the generator's propane lasts longer. It's the kind of thing that doesn't seem necessary until the outage hits day three.
If I was starting over, this is where I'd probably spend more, not less. Solar has gotten cheaper since I bought my panels, and a bigger array would let me lean on the generator even less.
the transfer switch upgrade ($900)
This is an embarrassing one. My original transfer switch covered the essential circuits: fridge, well pump, furnace, a few outlets. After the first winter I realized I'd left off the circuit for the garage, which meant I couldn't open the garage door during an outage. I also wanted the upstairs bathroom on the backup system because my kids were tired of using the downstairs one in the dark.
So I paid an electrician another $900 to upgrade the switch. If I'd thought it through the first time, I would have spent an extra $400 up front for a larger switch and saved $500. Lesson learned.
maintenance and parts ($1,500)
Oil changes. Air filters. Spark plugs. The annual service visit from the dealer. A battery replacement for the starter. Three years of keeping a machine alive that runs whether I'm paying attention or not. Budget about $500 a year. It's not optional.
miscellaneous ($1,200)
Extension cords from the portable generator days. Fuel stabilizer. A weatherproof cover for the power station. Modifications to the shed where I store equipment. A voltage meter. A carbon monoxide detector for the garage. The small stuff adds up in a way that's hard to track and impossible to avoid.
what it costs to do nothing
My neighbor — I'll call him Dale because that's not his name — has spent exactly zero dollars on backup power. He's a good guy. Smart. Makes more money than I do. He just never got around to it.
Here's what Dale has spent instead:
- Freezer full of meat, lost twice: roughly $800
- Hotel stay during a five-day winter outage (family of three, two nights): roughly $600
- Burst pipe from a freeze while the heat was out, plus water damage repair: north of $4,000
That's $5,400 in consequences. And Dale still doesn't have a generator.
The pipe damage is the one that gets people. Insurance covered some of it but not all, and it took three months to get the claim processed. Dale and his wife were running a dehumidifier in the living room for six weeks. Their house smelled like a wet dog until April.
I'm not telling this story to be smug. I'm telling it because Dale is the most common outcome. Most people don't prepare. Then the storm hits, and the cost of not preparing lands all at once instead of being spread over years of manageable spending. The math punishes procrastination.
what you can't put a number on
Last November a storm knocked out power across three counties. It was out for two and a half days. I know this because my wife told me. I slept through the night it happened. The generator kicked on, the house stayed warm, the fridge kept running, the well pump never stopped. My kids didn't know the power was out until they saw the neighbors' dark windows the next morning.
You can't put a dollar figure on that. I've tried. The best I can do is say that in three years I have never once woken up at 2 AM worrying about whether my family is going to be cold, or whether the sump pump is about to let the basement flood, or whether I need to drive to a hotel with two kids in the back seat.
That peace of mind is either worth something to you or it isn't. I can't argue someone into valuing it. But I can tell you that after three years, not a single dollar of that $28,000 feels wasted.
what I'd spend if I started over today
Knowing what I know now, I could probably do this for $22,000 to $24,000. Here's where the savings would come from:
- Skip the portable generator. That $400 was a panic purchase. If I'd waited two months and gone straight to the standby, I'd have saved the money and the headache. But I also would have spent two months without any backup, so I don't fully regret it.
- Get the right transfer switch the first time. That upgrade cost me $900 when it should have been a $400 upcharge on the original install. Think about every circuit you want covered before the electrician shows up, not after.
- Buy the power station during a sale. EcoFlow and similar brands run sales every few months. I paid full price because I was impatient. Save $300-$400 by waiting for Black Friday or Amazon Prime Day.
- Slightly larger solar array up front. I'd spend more here but save on propane over time. The math works out to roughly the same three-year cost but with a better system at the end.
- Get four quotes instead of three. I think I could have gotten installation done for $3,800-$4,000 if I'd talked to one more electrician.
The mistakes were expensive. Not ruinously so, but $4,000-$6,000 in avoidable spending adds up. That's the whole reason I write this stuff down. So you can learn from my receipts instead of generating your own.
how to afford this if you're not rich
I am not rich. I had some savings when we moved out here, and I spent a chunk of it on backup power because I considered it a non-negotiable part of living off-grid. But most people aren't starting from that position, and I'm not going to pretend that telling someone to "just spend $15,000" is helpful advice.
Here's how I'd phase it if I was starting from zero with a tight budget:
Phase one: portable generator ($500-$800). Get a decent dual-fuel portable. Not from a gas station. Something from Honda or Champion in the 3500-5000 watt range. This keeps your fridge running and a few lights on. It's ugly and loud and you'll run extension cords everywhere, but it works. This is your $0-to-something move.
Phase two: portable power station ($800-$1,200). This handles the short outages silently and lets you save the generator for the long ones. Charge it from the wall when the grid is up. Think of it as your first line of defense.
Phase three: standby generator ($12,000-$16,000 installed). This is the big one. Save for it. Finance it if you have to — some dealers offer 12-18 month plans. This is the purchase that changes everything. Once the standby is in, the portable becomes a backup to the backup and the power station handles the small stuff.
You don't have to do it all at once. I didn't, and I had the money to. Phasing it lets you learn as you go. Each step teaches you something about your power needs that makes the next step smarter.
If you can only do one thing, get a portable generator and a proper sizing estimate. The generator keeps you alive during outages. The sizing estimate means that when you're ready for the standby, you buy the right one the first time instead of paying for my mistakes.
the math, honestly
Is it worth it? I've spent about $28,000 over three years. I sleep through every storm. My family has never been without water, heat, or refrigeration. My neighbor has spent $0 on preparation and $5,400 on consequences. The math works if you look at it honestly.
The generator will last 15-20 years if I maintain it. The solar panels will outlast me. The battery station should give me another seven to ten years before the cells degrade. Spread $28,000 over 15 years and it's about $1,900 a year, plus fuel and maintenance. Call it $3,000 a year all-in.
Three thousand dollars a year to never think about the grid again. To never throw away a freezer full of meat. To never check into a hotel with two cranky kids. To never watch a pipe burst because the heat went out.
I've spent more than that on dumber things. I think you probably have too.