5KW Solar Packages
These 5KW Packages are a great start for a Complete Offgrid cabin, shop or small home. Kits can easily be upgraded with additional solar and battery capacity to grow as your needs do and budget allows.
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Frequently Asked Questions About 5KW Solar Packages
Every kit in this collection is built on the OMO All-In-One Stacking System, which integrates the 5500W inverter and lithium battery stack into a single compact unit. Batteries stack vertically on a wheeled base with the inverter on top, resulting in a clean footprint that takes up less floor space than most traditional setups. The stacking design also makes expansion simple: adding battery capacity means adding another module to the stack, not rewiring a separate bank. Kits in this collection range from 5.12kWh up to 30.72kWh of battery storage, all within the same physical system architecture.
More people than you might expect. The average U.S. home uses around 877 kWh per month, which works out to about 29 kWh per day. A 5.5kW array at 4.5 peak sun hours produces roughly 24.7 kWh per day, covering a well-managed full-time off-grid home comfortably when paired with adequate battery storage. At this size, realistic daily loads include a full-size refrigerator and freezer, a washing machine, a well pump, a mid-size mini-split, lighting, and everyday electronics without careful rationing. If you are stepping up from a 3kW or 4kW system that felt tight, 5.5kW is usually where that pressure goes away.
It depends heavily on your location and winter habits. A 5.5kW array in the Midwest might produce only 13 to 16 kWh per day in December. If your daily consumption is 12 to 15 kWh, a 10kWh battery bank gets you through one night. A 20 to 25kWh bank gets you through two nights, which is the difference between running a generator every cloudy day versus running it only during a multi-day stretch of bad weather. The 25.6kWh and 30.72kWh configurations are aimed at buyers who want genuine multi-day autonomy and minimal generator dependence even in January. If you are in the Sun Belt or using this as a seasonal setup, the 10kWh or 15kWh options are more than adequate.
Correct, the single 5500W OMO inverter outputs 120V AC. That covers the vast majority of standard household appliances: refrigerators, freezers, washing machines, lighting, electronics, fans, and most well pumps wired for 120V. If you need 240V output for a larger submersible pump, a 240V mini-split, or workshop equipment, you have two options. First, check whether your specific appliance has a 120V version, which many modern mini-splits and pumps do. Second, look at our 4kW collection, which includes the dual-inverter OMO Stacking System with 11,000W of combined 120/240V split-phase output. Call us if you are unsure before you order.
Start by estimating your realistic daily consumption and identifying your worst-case scenario: how many consecutive low-sun days do you need to ride out without a generator? A practical framework: multiply your daily load in kWh by the number of cloudy days of autonomy you want, then add 20% as a buffer for inverter losses and battery efficiency. For example, a 10 kWh daily load with two days of autonomy needs roughly 24 kWh of usable storage. If budget is a factor, starting with 10kWh and adding a module later is a fully reasonable path since the Stacking System is designed for exactly that. Plan your battery space and wiring for the final configuration you want, even if you do not fill it on day one.
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