10KW Solar Packages

For most off-grid cabins, shops, and small-to-medium homes, yes — but the honest answer depends on your daily energy use, not the size of your house. Based on our experience designing off-grid systems, the right way to size a system is to start with a load list: write down every appliance you'll run, how many watts it draws, and how many hours a day it runs. That gives you your daily kilowatt-hours (kWh), and that number drives everything else.

As a rough framework, a 10kW-class array (our 10KW packages actually ship with 10.8–11kW of solar) typically produces somewhere between 30 and 50 kWh per day in good sun, and considerably less in deep winter or heavy shade. A modest off-grid household running a refrigerator, freezer, well pump, lights, electronics, and a washing machine often lands in the 10–25 kWh/day range, which fits comfortably. A home running electric heat, central air conditioning, and an electric water heater all at once is a different conversation — those loads can double or triple daily consumption.

Customers living off-grid often tell us the system size mattered less than getting the load planning right before they bought. If you're not sure where your usage lands, send us your appliance list — we do this math every day, and our packages are built to be expanded with additional solar and battery capacity later, so you're not locked into your starting point.

For true off-grid living, your battery bank matters as much as your panels — it's what keeps the lights on after sunset and through cloudy stretches. That's why our 10KW packages are offered with a range of lithium battery options, from 15.36 kWh starter banks up to 96 kWh using three of our 32 kWh OMO Freedom Series batteries, and why every kit can be expanded as your needs grow.

Here's the practical framework we use. First, figure out your overnight and cloudy-day consumption — the energy you use when the sun isn't producing. Then decide how many days of autonomy you want: how long you're willing to run on batteries alone before starting a generator. One full day of autonomy is a common minimum; many full-time off-gridders aim for two.

A worked example: if your home uses 20 kWh per day and roughly 12 kWh of that happens overnight or during low production, a 15.36 kWh bank covers a normal night but leaves little margin for a dark, rainy day. A 30–32 kWh bank gives you a comfortable cushion; 60+ kWh gets you through multi-day storms with minimal generator runtime. From what we see in real customer installs, the most common regret isn't buying too much battery — it's buying too little and leaning on the generator more than expected. If budget is tight, start with a smaller bank and add capacity later; the stackable battery options in these kits are designed for exactly that.

Winter is the season that separates well-designed off-grid systems from frustrating ones. Shorter days, lower sun angle, clouds, and snow can cut solar production to a third — sometimes less — of summer output, depending on your location. Based on trends we've observed from support requests, most winter problems trace back to systems that were sized for July instead of December.

Three things protect you. First, size your array against your worst month, not your average month — this is one reason our 10KW packages ship with 10.8–11kW of actual panel capacity and can be expanded with more solar later. Second, carry enough battery to bridge consecutive gray days. Third, plan on a backup generator. We'll be direct with you: for full-time off-grid living in most of the U.S., a generator isn't an admission of failure — it's the cost-effective insurance that lets you avoid buying batteries for the five worst days of the year. The Sol-Ark 18K inverters in these packages accept a generator as a backup charging and power source so it can kick in during extended cloudy stretches.

Mounting choice matters in snow country too. The ground mount versions of our kits make it far easier to clear snow off panels and to set a steeper tilt that sheds snow and catches low winter sun. Customers in northern climates often tell us that easy snow access was worth more than they expected.

This is one of the most common questions we get, and it really comes down to two numbers: continuous load and startup surge. Motors — well pumps, AC compressors, air compressors, table saws — draw far more power for a second or two at startup than they do while running. A well pump that runs at 1,500–2,000 watts may briefly demand 4,000–6,000 watts when it kicks on. An undersized inverter trips on that surge even if the running load looks fine on paper.

This is why our 10KW packages are built around the Sol-Ark 18K hybrid inverter. This is a 120/240V split-phase inverter with substantial continuous and surge capacity, which is what lets it start standard 240V well pumps and run typical household loads at the same time. From what we see in real customer installs, well pumps, refrigerators, freezers, mini-split heat pumps, washers, and shop tools are all routinely handled — the planning question is usually about what runs simultaneously, not whether any single appliance will work.

Two practical notes. Central air conditioning and electric resistance heating are the loads most likely to outgrow a 10kW-class system if run heavily — efficient mini-splits are a much better match for off-grid living, and propane is often the smarter choice for space heating, water heating, and clothes drying. And if you have a deep well or an unusual pump, tell us the horsepower and depth before you order. Sizing the inverter to your actual surge loads is a five-minute conversation that prevents expensive surprises.

These packages arrive as genuinely complete kits — panels, inverter, batteries (on battery kits), roof or ground mount racking, rails, and wiring — so a capable DIYer with basic electrical knowledge can handle much of the physical install: setting the mount, racking panels, and running wire. The final connections to your home's electrical system should be done or inspected by a licensed electrician, both for safety and because most jurisdictions require it. Be realistic about the roof-versus-ground decision: ground mounts involve more site work up front but are easier and safer to install and maintain yourself.

On permits: requirements vary widely by county. Some rural off-grid counties require little; others want stamped engineering plans. We offer a Permit Application Package service with engineering plan sets for exactly this reason, and we'd rather help you sort out your county's requirements before you order than after. We also run hands-on off-grid solar training courses for owners who want to do more of the work themselves, and full installation service if you'd rather not climb a roof at all.

Maintenance on these systems is lighter than most people expect. Lithium (LiFePO4) batteries like the Pytes, OMO Stack, and Freedom Series options don't need the watering and equalization that old lead-acid banks demanded. Ongoing care is mostly: keep panels clean and clear of snow, glance at your inverter monitoring now and then, exercise your backup generator monthly, and keep vegetation trimmed around ground mounts. Customers living off-grid often tell us the system quickly becomes a background appliance — the work is in the planning, not the upkeep.