35KW Solar Packages

At 35 kW, many utilities and building departments classify the system as either large residential or small commercial, depending on local rules. This classification can affect permit requirements, engineering documentation, inspections, interconnection procedures, and whether a licensed contractor must submit the application.

The equipment itself is based on the same proven hardware used throughout smaller OMOSolar packages, including two Sol-Ark 18K inverters, 64 bifacial solar panels, and OMO Freedom Series batteries.

In most cases, the main difference is the permitting and approval process rather than the way the equipment operates. Contact OMOSolar before ordering so local requirements can be reviewed early in the planning process.

Installation time depends on the mounting method, site conditions, system design, and the experience of the installation crew. A ground-mounted system on a clear, prepared site may take approximately four to seven working days for a two- or three-person crew.

That estimate can include assembling the mounting structure, installing 64 panels, organizing panel strings, running conduit and wiring, mounting the inverters, connecting the batteries, and completing the final electrical work. A roof-mounted system with multiple roof planes, obstructions, or difficult access may take longer.

The wiring for a 64-panel array is a substantial part of the project. Buyers should plan for properly sized conduit, labeled circuits, organized solar strings, accessible combiner boxes, and clean wire routing throughout the installation.

Based on our experience designing off-grid systems, it is better to treat a project of this size as a multi-day or two-week installation rather than a weekend job. Careful wire management and labeling make future inspection, troubleshooting, and maintenance much easier.

At 35 kW of solar with two Sol-Ark 18K inverters, the system can experience high charging and discharging currents during peak production and heavy-load operation.

The OMO Freedom Series provides 32 kWh of storage per battery and is designed for the higher continuous current demands associated with a large array and dual-inverter configuration. This makes it a more practical match for the Sol-Ark system's battery-current capability than building a very large bank from numerous smaller modular units.

Customers do not necessarily need to begin with the maximum 96 kWh configuration. Starting with one 32 kWh Freedom Series battery can be a practical option when the initial budget is limited.

A single unit may cover overnight demand for a moderate household, depending on actual energy use. A second or third Freedom Series battery can be added later without replacing the original inverters or redesigning the entire system, provided the installation is prepared for expansion.

A large solar array can be especially valuable in northern climates, where short winter days, low sun angles, snow, and extended cloudy periods significantly reduce production.

In areas such as Minnesota or Montana, winter peak sun hours may fall to approximately 2.5 to 3.5 hours per day. Under strong, clear conditions, a 35.2 kW array could theoretically produce roughly 88 to 123 kWh before accounting for real-world system losses, shading, snow coverage, temperature, and battery-charging limitations.

Actual winter production will vary by location, panel orientation, tilt, weather, snow accumulation, and site conditions. A properly sized battery bank and backup generator should still be included in the design for extended low-production periods.

One of the main advantages of a larger array is recovery speed. After several cloudy days, a clear winter day can return a substantial amount of energy to the battery bank more quickly than a smaller array.

Customers living off-grid in colder climates often find that this faster recovery is just as important as total daily production because it reduces the amount of time the battery bank remains at a low state of charge.