Properties off the electricity grid: what to consider

A property off the electricity grid is one where there is no nearby connection point to the conventional distribution network, or where connecting would be disproportionately costly because of the distance to the nearest power line. This situation is relatively common on rural properties far from urban centres, and it is not in itself a problem: many properties function perfectly well without a grid connection, provided generation and consumption are planned sensibly and sized correctly from the outset.

Before buying, or deciding to keep a property off-grid, it is worth understanding that "off the grid" does not mean "without electricity": self-generation solutions exist (mainly solar, sometimes combined with other sources such as small generators) capable of covering a property's usual needs, provided they are correctly sized and paired with a battery storage system suited to the real expected consumption, not to theoretical or desired consumption.

This guide covers the practical implications of living or working on a property with no grid connection — what changes day to day compared with a conventional home — and points to the dedicated guide on solar installations on rural properties for the technical detail of how to size and maintain the generation system itself.

It is also worth distinguishing between a property that has never had grid access and one that was connected at some point and lost that connection (for example, through prolonged abandonment of an old line): in the second case there may be a chance to restore the connection at a lower cost than a completely new connection, something worth checking with the distribution company before ruling out that option.

The most common option for covering the electricity consumption of an off-grid property is a photovoltaic solar installation with storage batteries, often complemented by a backup generator (usually diesel or gas) for periods of prolonged low solar output. Correctly sizing this system is critical: unlike a grid-connected installation, where a calculation error is simply offset by drawing electricity from the grid, in an off-grid installation a sizing error translates directly into power cuts.

Living with self-generation means, in practice, adapting certain consumption habits: spreading the use of higher-consumption appliances across the day rather than concentrating them, paying attention to the batteries' state of charge, especially in winter when there are fewer daylight hours, and always having a backup plan for lower-production days. It is not an insurmountable limitation, but it does involve a change of mindset compared with the seemingly unlimited electricity consumption people are used to with a conventional grid connection.

It is also worth considering ongoing maintenance of the system: periodically checking the batteries' condition, cleaning the panels, checking the backup generator's operation if there is one, and having a trusted contact — the installer themselves or another qualified technician — able to come to the property in case of a fault, especially if the property is in regular use rather than occasional, where a prolonged fault has a much greater impact on day-to-day life.

Some properties combine solar generation with other complementary sources depending on their location and resources: small-scale hydro schemes where a usable water drop exists, or even mini wind turbines in areas with good wind resource and sufficiently steady consumption to justify them. These combinations, where they make technical and economic sense, can reduce exclusive reliance on solar production and improve the reliability of the overall system, although their viability should be assessed case by case with a specialised technician.

The lack of an electricity grid connection is often, though not always, accompanied by other utility limitations worth reviewing separately: access to running water (own well, tank with external supply, or no running water at all), sanitation (septic tank instead of a sewage network) and mobile or internet coverage, which in very isolated areas may require specific solutions such as satellite internet or signal boosters installed on the property itself.

Each of these utilities has its own logic of autonomy: a well requires an electric pump, which in turn depends on the generation system, so it is worth sizing the electrical system with the water pump's consumption in mind too, not just lighting and usual appliances. A septic tank requires periodic maintenance (emptying, checking it is working correctly) like any self-contained sanitation system, and it should be sized according to the number of people who actually use the property.

As for communications, conventional mobile coverage can be poor or non-existent on very remote properties, which in recent years has driven the adoption of satellite internet solutions as an increasingly accessible alternative to traditional terrestrial signal-boosting solutions. Having reliable communications matters beyond convenience: it can be important for reaching emergency services or the installer themselves in case of a fault in the electrical system.

Before buying an off-grid property, it is worth verifying the real state of these utilities — not just whether they exist, but whether they work properly and what maintenance they have received — and, if possible, talking to the current owner about their practical experience living or working on the property, information that tends to be more useful than any brochure or technical spec sheet about the existing installations.

If you are considering buying a property with no access to the electricity grid, it is worth first finding out whether there is a realistic possibility of connecting in the future (distance to the nearest connection point, estimated cost from the distribution company), even if you don't intend to do so right away, because that information affects both the property's value and the owner's future options, and can be a relevant factor for any eventual resale.

It is also worth asking about the condition and age of any generation installation already on the property: if there are solar panels installed, how old they are, what maintenance they have received, and whether the technical documentation and warranties are available. An old or poorly maintained installation may require an immediate additional investment that should be factored into the purchase price, in the same way you would assess the condition of any other significant installation on the property.

Finally, it is worth reflecting honestly on the intended use of the property: an occasional-use second home tolerates the limitations of an off-grid installation better than a primary residence or an operation with constant energy needs. Matching expectations to the actual intended use avoids later disappointment, and in general it is worth sizing any new or upgraded installation with the most demanding reasonable use of the property in mind, not the minimum use.

Many people who live or work on off-grid properties describe the experience not as giving up usual comforts, but as a change in planning: knowing what time of day is best for using which appliances, keeping an eye on the batteries' state the way you would keep an eye on your car's fuel level, and anticipating any maintenance with enough lead time before it turns into a fault that leaves you without power at the worst possible moment.

The key, in most cases, lies not in the technology itself — which today is reliable and well proven — but in good initial sizing matched to real consumption and in consistent maintenance. A poorly sized installation from the start is the most common cause of dissatisfaction with life on an off-grid property, more so than the lack of a grid connection itself, which in practice stops being noticeable once the system runs reliably.

Having an installer who specialises in off-grid systems, not just grid-connected installations, makes a real difference: designing a reliable autonomous system requires specific experience in sizing batteries and generation to cover prolonged low-production scenarios, which is different from calculating a self-consumption installation with the grid as a permanent backup.

Over the years, many owners of off-grid properties end up developing fairly detailed practical knowledge of their own system: how long the batteries last under different conditions, which appliances consume more than expected, or at what time of year it's worth being more conservative with consumption. This accumulated knowledge, more than any technical manual, is usually what allows people to live with an off-grid system smoothly over time.

Before assuming that connecting to the conventional electricity grid is always the cheaper option, it is worth requesting a real quote from the distribution company for the specific plot: on properties very far from the existing power line, the cost of extending the line can end up notably higher than that of an equivalent-sized self-generation installation, especially if it is necessary to cross third-party land or areas with environmental restrictions that make the connection work more expensive and longer.

That grid-connection quote should be compared, with the help of a specialised installer, against the total cost of an off-grid installation sized for the same intended use, including not just the panels and inverter, but also the batteries, any backup generator, and the maintenance expected over the years. Only with both figures on the table does it make sense to decide with judgement, rather than assuming in advance which of the two options is preferable.

In some cases the decision is not entirely binary: some properties opt for an initial off-grid installation and consider a grid connection later on if the property's use changes (for example, if it moves from occasional use to a primary residence, or if the economic activity carried out there expands significantly), which allows the investment to be staged rather than taking on the maximum cost from the outset.

It's also worth remembering that, even if you opt for a grid connection, keeping some backup self-generation capacity — for example, a small generator or a smaller solar system — can be reasonable on properties in areas where power cuts are more frequent than in an urban setting, something relatively common on rural lines with lower capacity and greater length, especially during episodes of strong wind or snowfall that affect overhead lines. When comparing both options, it's also worth bearing in mind the time horizon of the decision: a well-maintained off-grid installation can continue to provide service for many years with occasional component replacements, while a grid connection, once the work is done, requires almost no maintenance from the owner beyond paying the periodic bill.