8kW Solar Power System

8kW Solar System Kits: Split-Phase Power for a Whole Home

An 8kW solar system is the step where 240V arrives. Every kit here is built around an 8,000W 48V inverter with 120V/240V split-phase output, which is what a well pump, an electric dryer, a central air handler or a 240V workshop tool needs. Paired with 10 to 20kWh of LiFePO4 storage and a 3,300W to 5,400W array, these packages are sized for a full-time off-grid house or a home that wants to ride out multi-day outages.

The collection holds four Sungold Power packages. The 8kw solar system price runs from $5,518 for the SGR-8K10E with 10.24kWh and eight 415W panels, through $6,979 for the SGK-8MAX with a 5,400W array, to $8,880 for the SGM-8K20 with 20.48kWh of battery. A fourth option, the 14.3kWh Complete 48V Power System without panels, is sold out at $5,899.

How to choose an 8kW solar kit

• Storage for your nights and cloudy days. The Sungold Power SGR-8K10E with 10.24kWh carries a home's essentials overnight. The Sungold Power SGM-8K20 with 20.48kWh doubles that with four 5.12kWh modules, which is the difference between rationing on a rainy day and not noticing it.
• Array size for your winter. Eight 415W panels make 3,320W; twelve 450W panels make 5,400W. The Sungold Power SGK-8MAX with 5,400W of panels is the kit for northern states or shaded lots, where December sun hours are short and a bigger array refills the same 10.24kWh in fewer hours.
• Loads that overlap. An 8kw inverter runs a 240V well pump alongside a refrigerator, washer and lights; Sungold lists the SGM-8K20 for washers, refrigerators and water pumps. Central air plus an electric range at the same time is a 10kW conversation.
• Panels included or your own. The sold-out Complete 48V Power System pairs the 8,000W inverter with a 14.3kWh Rhino 2 battery, wall charger, 300A fuse kit and bus bars, but no panels. It fits owners who already have an array on the roof.
• Monitoring. The SGK-8MAX battery is Bluetooth-enabled, so you can check state of charge from a phone; the other kits report through the inverter display.

Popular picks in this collection

Sizing tips

• Start with the Solar Kit Calculator. Enter every appliance and your ZIP code; it returns the battery, inverter and array size your sun hours require, and tells you which of these three kits lands closest.
• Decide on storage first, panels second. Adding panels to an 8kw solar kit later is a simple job; adding battery modules means matching the model already installed, so buy the 20.48kWh kit now if you know you will need it.
• Both inverter MPPT inputs should be used. The SGM-8K20 and SGK-8MAX are dual-MPPT; split the array into two strings on different roof faces so morning and afternoon production both count.
• Plan the battery location. Four 5.12kWh modules and an inverter want a dry, cool wall in a garage or utility room, out of freezing temperatures.
• Budget for the electrician and permit. An 8,000W split-phase system feeding a house panel is a permitted installation in most jurisdictions; we can supply spec sheets for the inspector.

Frequently asked questions

Is an 8kW solar system kit enough to go fully off grid? For a modest home with propane or wood heat and a gas range, yes. The SGM-8K20's 20.48kWh and 4,980W array cover a typical family's daily use with reserve; homes with electric heat need more storage and array than any single kit here.

What is the difference between the SGR-8K10E and SGK-8MAX? Same 8,000W inverter class and 10.24kWh of battery; the 8MAX adds four more panels and steps each up to 450W for 5,400W total, plus a Bluetooth-enabled battery. The $1,461 difference buys roughly 60% more solar.

Can I run a 240V well pump? Yes. Split-phase 120V/240V output is standard on every kit in this collection, unlike the 120V-only 5kW packages.

Kits ship free to the mainland US from Sungold Power's partner warehouse, usually within a few business days, with 30-day returns. Call us with your load list and we will confirm which 8kW package matches it.