Can Solar Panels Help You Go ‘Off-Grid’?
Quick answer: Yes. Solar panels with a large battery bank, and usually a backup generator, can power a home with no utility connection. It works well for cabins and remote properties, but for a typical home it costs far more than grid-tied solar because you have to size for winter and cloudy stretches.
Going off-grid means producing and storing all of your own electricity with no connection to a utility. Solar is the most common way people do it. It’s very achievable for cabins and remote homes, but for a typical house it takes a much bigger and more expensive system than regular grid-tied solar.
What “the grid” is
In the US, the power grid is actually three large, mostly separate systems: the Eastern Interconnection, the Western Interconnection and the Texas grid run by ERCOT. They have limited links to each other and ties to Canada and Mexico. Nearly every home is connected to one of them. Going off-grid means your home has no connection to any of them, so everything you use has to come from your own system.
That’s a big shift from how Americans have lived for the past century. About 7 in 10 US homes had electricity by 1930, and most farms were connected after the Rural Electrification Act of 1936.
Why people go off-grid
- Remote property. Running new power lines can be expensive. The Department of Energy cites $15,000 to $50,000 per mile, and some utility line-extension tariffs work out to around $30,000 or more per mile.
- Independence from utility rates and outages.
- Environmental goals.
- Cabins, tiny homes and seasonal properties where usage is low.
What an off-grid solar system needs
- Solar panels, usually more than a grid-tied home would need, because there’s no grid to fall back on in winter.
- A battery bank big enough to cover nights and several cloudy days. Lithium iron phosphate (LFP) batteries are now the common choice.
- An inverter and charge controller designed for off-grid use.
- A backup generator for long stretches of bad weather. Most full-time off-grid homes have one.
How big does it need to be?
Off-grid systems are sized for the worst time of year, not the average. Start with your daily usage. The average US home uses about 865 kWh a month, or roughly 28 kWh a day, while an efficient cabin might use 5 to 10 kWh a day. Then plan for:
- Enough panels to meet your daily needs in winter, when the sun is low and days are short.
- Enough battery storage for one to three days with little sun, depending on your climate and whether you have a generator.
For a full-size home, that can mean a very large battery bank. Cutting usage first, with efficient appliances and propane or wood for heating and cooking, makes off-grid living far more affordable.
What it costs
A grid-tied system can lean on the grid, so it’s much cheaper than an off-grid system of the same size. Batteries are the biggest extra cost: a single 13.5 kWh home battery runs about $15,650 installed, based on EnergySage’s July 2026 data, and a full-time off-grid home may need several. Whether off-grid solar costs less than bringing in power lines depends on how far away the grid is and how much electricity you need.
Things to check before you commit
- Local codes. Some jurisdictions require a grid connection or specific permits for a home to be approved for occupancy. Check with your building department.
- Financing and insurance. Some lenders and insurers have extra requirements for off-grid homes.
- Maintenance. You’re the utility now, so you’re responsible for monitoring batteries, running the generator and fixing problems.
The middle ground: grid-tied with backup
If your main goal is keeping the lights on during outages, a grid-tied solar system with a battery gives you backup power without the cost and effort of full off-grid living. See solar during power outages and solar backup batteries. For small off-grid setups, our guide to RV solar is a good starting point.
