Going Off-Grid: Is It Actually Possible, and Is It the Right Move?

More homeowners, farms, and small businesses are asking the same question: what would it take to go off grid entirely, or at least have a reliable off-grid backup for when the utility grid fails? It's a question NEPM fields more and more often, and it's showing up in more of our conversations every year.

Here's the part that tends to get skipped in the marketing material out there: an off-grid system is only as good as its sizing, and getting that wrong is an expensive mistake to walk back. There's also a more basic question worth asking first, if your property is already connected to the grid: is full disconnection even something your zoning and local building codes will allow? That's not a given, and it depends on your specific municipality, so it's worth confirming before anything else, with our support if you want it.

In this guide, we'll cover what's driving the off-grid solar trend, why grid instability is pushing more property owners to consider it, why sizing, not the panels or the battery brand, is the single factor that determines whether the system actually works, and why zoning and code can rule full disconnection in or out even after the numbers make sense.

Why It's On People's Minds

A few years ago, off-grid solar was mostly a niche choice: cabins in remote areas, homesteads without utility access, or people making a lifestyle statement. That's changed. Today we're seeing serious interest from property owners who are fully connected to the grid but want an alternative anyway.

Part of it is cost. Solar equipment prices have come down significantly, and battery prices have followed the same trend, so the total investment for a combined solar-and-battery system, and the payback period that comes with it, has shrunk compared to a few years ago, especially when paired with available incentives.

Part of it is resilience. Severe weather events, ice storms, high-wind events, heavy snow, have left communities without power for days at a time in recent years. A few hours without power is an inconvenience. Several days, in the middle of winter or a heat wave, is a real problem for any homeowner, and more so for a farm with refrigeration needs, a business that can't operate without power, or a household with someone dependent on medical equipment. This is where battery storage earns its place, not by shortening a payback calculation, but by keeping critical systems running when the grid can't.

And part of it is simply about control. Staying grid-tied means paying the Basic Service Charge no matter how much power you draw, and the Customer Benefit Contribution (CBC) if you have solar, sized to your system whether it's producing or not. Those aren't typically break-the-bank amounts, but there's something genuinely frustrating about being locked into fees you had no say in setting, with no way to opt out as long as you're connected. If full independence from those unilateral decisions is what you're after, going fully off-grid is really the only way to get it.

All of that makes off-grid sound like an easy yes. Whether it actually is, for your specific property, has less to do with how appealing the idea is and more to do with your zoning, your local codes, and your actual load profile, which is what the rest of this guide is really about.

Grid Instability: The Other Big Driver

It's worth naming directly: grid reliability has become a real concern for a lot of people, not just an abstract worry. Aging infrastructure, more frequent extreme weather, and rising demand are putting pressure on systems that weren't built for today's conditions. Utilities are working on upgrades, but that work takes time, and in the meantime, outages happen.

That instability is a major reason so many property owners are exploring backup power, whether that means going fully off-grid or staying grid-tied with battery backup, sometimes called a hybrid system, moving the idea from "nice to have" into "worth seriously considering" for people who never would have thought about it a decade ago.

Off-Grid System Sizing: The Part People Underestimate

This is where we spend most of our time with clients, and it's exactly the kind of decision that's easy to get wrong without the right guidance.

Unlike a grid-tied system, where the utility grid acts as a backstop for whatever your panels and batteries don't cover, a true off-grid power system has to carry the entire load itself, every day, in every season, under every weather condition. Get the sizing wrong, and you end up with a system that works fine in the summer and leaves you short in the winter.

There's a long list of variables that go into getting this right, and they interact with each other in ways that aren't always intuitive:

• How much energy the property actually uses, and when it uses it

• Seasonal sunlight variation, especially shorter, lower-angle winter days

• How many consecutive cloudy days the battery bank needs to carry the property through

• Roof or ground-mount orientation, shading, and available space

• Whether the system needs to support high-draw equipment like well pumps, refrigeration, or shop tools

• Future load growth: an EV, a heat pump, an addition to the property

• The trade-off between battery capacity, panel capacity, and, for hybrid systems, backup generation

  
  

Undersize any one of these pieces and the rest of the system can't compensate. Oversize it and you're paying for capacity you'll rarely use. The right answer is different for every property, which is exactly why a generic online calculator or a one-size-fits-all package usually isn't the right starting point.

Off-Grid vs. Grid-Tied: The Trade-Offs Worth Thinking Through

As we mentioned up front, the zoning and code question comes first for an already-connected property. Once that's confirmed, either way, there's a real financial trade-off worth weighing between going fully off-grid and staying grid-tied with battery backup.

Where full disconnection is workable, going fully off-grid means avoiding the Basic Service Charge every utility bills regardless of how much power you draw, around $20 a month in New York, plus, if you have solar, a separate Customer Benefit Contribution (download PDF on utility CBC charges) that New York utilities apply to solar systems interconnected since 2022, sometimes called a solar tax, sized to your system rather than your usage and running roughly $0.95 to $1.70 per kW per month depending on the utility, with Central Hudson at the higher end.

But staying grid-tied has an upside too, especially here where net metering is still available. You keep the grid as backup for your systems, and you still capture most of the savings by offsetting your usage charges, the delivery and supply portions of your bill. In practice that often means paying a modest fixed cost each month, commonly $40 to $50 total, and offsetting everything else through solar production.

None of this is an argument against going off-grid where it's a genuine option, for a remote property without a practical grid connection, it often is the right call. For a homeowner who's already grid-tied, once the zoning and code question is settled, the honest next question is what you'd actually save either way. For a lot of homeowners, grid-tied with battery backup ends up being the more workable answer.

Where NEPM Comes In

This is the work we do: sitting down with a property's actual energy profile, its site conditions, and its owner's goals, and building a system, fully off-grid or grid-tied with battery backup, sized and structured to match, before any equipment gets ordered or any bid gets signed. That includes helping you understand whether full disconnection is even workable for your property under your local zoning and building codes, not just what the equipment would cost. The right system starts with the right analysis, not a guess, and not a sales pitch from whoever's selling the equipment. Whichever direction makes sense for your property, we can make sure it's the best system to cover your needs.

Thinking about what off-grid or backup solar could look like for your property? Talk with an energy expert today.

Common Questions About Going Off Grid

Is off-grid solar becoming more popular? 

Yes. Falling equipment costs, rising utility rates, and growing concern about grid reliability have all contributed to a sharp rise in interest in off-grid solar and grid-tied battery backup systems in recent years.

What's the difference between off-grid and grid-tied solar?

A grid-tied system stays connected to the utility grid as a backstop. A true off-grid system is fully self-sufficient and must generate and store all the power a property needs without any utility connection. For a property that's already grid-connected, actually disconnecting can also run into local zoning and building code requirements, so it's worth confirming with your municipality before assuming it's an option.

Why does off-grid system sizing matter so much? 

Because there's no utility grid to fall back on, an undersized off-grid system can leave a property short of power during low-sun stretches or high-demand periods, while an oversized system means paying for capacity that's rarely used.