12kW Solar Power Systems

12kW Solar System Kits: Whole-Home Power, Off-Grid or Hybrid

A 12kw solar system is the size most full-size US homes need to run everything at once: central air, a well pump, an electric range and the usual lights and electronics. The 12kW figure refers to continuous inverter output at 120/240V split-phase. What sits behind that inverter varies: some packages here are inverter-plus-battery only, ready for panels you already own, and others include the full array, batteries, breakers and rapid shutdown.

This collection holds 20 products from EG4, BigBattery, Sungold Power and Anker, priced from about $5,300 for a two-station Anker SOLIX kit to about $16,700 for a Sungold hybrid kit with 48.21kWh of outdoor storage and 10,620W of panels.

How to choose a 12kW system

• Off-grid or hybrid. Off-grid kits such as the Sungold Power 12kW Off-Grid Solar Kit with 20.48kWh CoreX 5 Pro Battery run a property with no utility connection. Hybrid kits such as the Sungold Power 12kW Hybrid Solar Kit with 16.07kWh PowerMax Battery are grid-tied with 200A pass-through and UL 9540 certification, which is what most utilities and inspectors ask for on a connected home.
• Battery capacity. Storage in this collection runs from 7,680Wh on the Anker SOLIX F3800 Plus kits to 48.21kWh on the largest Sungold hybrid. A home drawing 30kWh a day needs the upper end to ride through a cloudy day; a cabin used on weekends is fine with 15 to 20kWh.
• Panels included or not. The EG4 PowerPro 12kW 28.7kWh 48V Battery Backup and the BigBattery ETHOS 12kW systems ship as inverter and battery only. The Sungold kits include 12 to 20 panels, from 7,200W to 10,620W of array.
• Battery format. Rack-mount CoreX 5 Pro modules go indoors in a cabinet. PowerMax 314 batteries are outdoor rated, and the EG4 280Ah All-Weather batteries in the PowerPro kits are built for the same job.
• Plug-in versus hardwired. The Anker SOLIX F3800 PLUS with Home Power Panel and Sub Panel is a 7,680Wh station with 3,200W of solar input, auto backup and generator compatibility, sold with the panels that tie it into the house wiring. It is the route for a homeowner who wants backup without a rack of batteries.

Popular picks in this collection

Sizing tips

• Pull 12 months of utility bills and find your highest daily kWh before you pick a 12kw solar system kit. Summer AC months set the battery size; winter sets the panel count.
• Run the Solar Kit Calculator with your ZIP code. Sun hours in Arizona and in upstate New York differ enough to change the panel count by a third.
• Count the largest motor loads. A well pump or a 4-ton AC compressor decides whether a 12kw inverter has enough surge headroom above its continuous rating; ask us for the peak figure of the model you are considering.
• Budget for the electrician and permit. The 12kw solar system cost on this page covers equipment; a licensed installer handles the interconnection and the inspection.

Frequently asked questions

How many panels does a 12kW system need? The kits here include 12 to 20 panels of 415W to 590W each. Full 12kW of array is not required; the Sungold FR-12K20CP pairs a 12kW inverter with 7,200W of panels and 20.48kWh of battery.

Can I expand later? Yes on most. The EG4 PowerPro line moves from two to three batteries (28.6kWh to 42.9kWh), and the Anker F3800 Plus kits take solar input up to 3,200W.

Is a 12kw solar kit enough for a home with an EV? For overnight charging on a Level 2 charger, choose a system with 20kWh or more of storage or a hybrid that pulls from the grid at night.

Every system ships free to the mainland US from our brand partner warehouses, usually within a few business days, with 30-day returns. Call us with your utility bill in hand and we will match the inverter, battery and panel count to your house.