Anker SOLIX X1

~$13,000approx. list price

800 WLights, phones, router, a CPAP
2,200 WFridge, freezer and the essentials
4,000 WFurnace blower, sump pump or a window AC
7,500 WWell pump or a small central AC
18,000 WWhole home with central air

6,000 W running, 12,000 W surge — sustains the furnace blower, sump pump or a window AC tier and everything below it.

Best forDesign-conscious homeowners in covered markets who want granular 5kWh-at-a-time expansion.

Anker's professionally-installed system, built from slim 5kWh modules into the best-looking cabinet in the business. Price shown is a typical installed 15kWh configuration (~$9,750-11,000 hardware plus $1,500-5,000 installation). The 6kW/12kW-peak power module handles essential-loads or whole-home duty, modules run at full power from -4°F thanks to per-pack thermal management, and systems parallel to a monstrous 180kWh. Reviewers praise the modular economics - add 5kWh at a time instead of a whole second cabinet. The catch: installer coverage is uneven, with one central California buyer quoted quickly while another nearby could not get an Anker installer to call back, and 12kWh usable from the '15kWh' stack (90.2% round-trip) needs reading of the fine print.

From the spec sheet

Specifications

Battery capacity: 15,000 Wh
Expandable to: 180,000 Wh
Continuous output: 6,000 W
Surge output: 12,000 W
Runtime: Fridge (~150W): ~68 hrs (12kWh usable) per 15kWh stack

Type: Home Battery System
Fuel: Battery (LiFePO4)
Outlets: Hardwired 120/240V split-phase whole-home or partial backup
Transfer-switch ready: Yes
Weight: 431 lbs
Warranty: 10-year
Model: X1-P6K-B15-US

Slim modular 5kWh packs·Full power at -4°F·Scales to 180kWh

At a glance

Strengths

+Best-in-class industrial design - garage-showpiece aesthetics
+5kWh modular growth beats buying whole extra cabinets
+Full-rate output down to -4°F verified by spec sheet
+Scales to 36kW / 180kWh across six systems
+Hardware pricing (~$650/kWh) undercuts most installed rivals

At a glance

Drawbacks

−Thin installer network - many regions have zero certified coverage
−Quote variance is extreme where installers do exist
−12kWh usable from a 15kWh stack (90.2% RTE) disappoints spec-readers
−6kW continuous is half a Powerwall 3 - two stacks needed for big HVAC
−Young platform with a short field-reliability record

Summarised from owner discussions and forums

Owner insights

The SOLIX X1 is Anker's installer-only home battery, built from 5kWh modules behind a power module rated 6kW continuous, and one buyer called that modularity a big selling point: start at 10 to 30kWh and add modules later rather than buy a second whole battery. It is rated for full power down to -4F, and its software adds SPAN-style load control, weather-aware storm pre-charging and time-of-use scheduling. Installed quotes have clustered around $21,000-22,500 for 20-30kWh, which one buyer judged in line with other battery systems and another found a little under a two-Powerwall quote, and one Houston-area owner with a complete Anker solar and battery system reports not drawing grid power since the install.

Buying it is the first hurdle, and the architecture the second. Anker launched without a public price, and installers have been hard or impossible to reach in parts of California, New Jersey and the East Coast. As of mid-2025 the North American X1 had no hybrid model, so it pairs with microinverters or an existing string inverter rather than taking panels directly, and the 6kW output of a single power module looks small beside a Powerwall 3 or a 12kW EG4 inverter. A 15kWh stack yields 12kWh usable. Like a Powerwall, it is a fixed installation that stays with the house, which led one buyer to choose a portable EcoFlow Delta Pro Ultra that can move with them.

What owners like

+Capacity grows in 5kWh modules, which one central California buyer called a big selling point when signing up, since a local technician can apparently slot more in later
+Rated for full power down to -4F, with per-pack thermal management that keeps the batteries warm when it is cold
+Smart load control along the lines of SPAN, with weather-aware pre-charging ahead of storms and time-of-use scheduling, plus an on-unit display and ambient lighting
+A Houston-area owner with a complete Anker solar and battery system says the household has not drawn grid power since the install, and Anker sent some of its own engineers to make sure the install went smoothly
+Installed quotes have landed near Powerwall money: $22,124 for 20kWh added to existing solar in central California, and about $21,000 for 12kW and 30kWh in the Houston area, a little under a competing two-Powerwall quote

Common complaints

−No published price: at launch the only route was a quote form, which shoppers called sketchy, and one buyer who emailed weekly for three months without getting a number bought a portable Anker F3800 instead
−Installer coverage is thin: buyers near Sacramento, in central California, central New Jersey and two East Coast metros could not get an Anker installer to respond or were told none existed yet
−As of mid-2025 the US and Canadian X1 had no hybrid model, so it charges only from AC and solar panels need their own inverter or microinverters
−A single power module is rated 6kW continuous (12kW surge), and two shoppers comparing it with a Powerwall 3 or a 12kW EG4 inverter found that output too low without paying for a second module; a third called it a little low but enough for outages
−A 15kWh stack gives 12kWh usable at 90.2% round-trip efficiency
−In one early Houston install, the utility would not approve the new design as drawn and required three external disconnect switches before interconnection

Questions owners ask

What does an installed X1 cost?

Anker does not publish a price; quotes come through certified installers. Buyers have reported $22,124 for 20kWh added to existing solar in central California, $21,500 for one 6kW power module and 30kWh from a local installer, and about $21,000 for two power modules and 30kWh in Texas. One estimate put one power module and 20kWh at $17,500, or $22,500 with two power modules, before tax credits.

Can the X1 connect directly to my solar panels?

Not in North America as of mid-2025: the US and Canadian X1 had no hybrid model, so it charges from AC, meaning an existing solar inverter or microinverters and the grid. Quotes in practice have paired it with Enphase IQ8+ microinverters or an existing SolarEdge inverter, and one installer recommends APsystems microinverters with it.

How far can I expand it later?

Battery capacity goes in 5kWh modules, and one buyer was told a local technician can install added modules. Each power module takes up to six batteries in two stacks of three, one reading of Anker's website allows up to three power modules and nine battery modules (18kW and 45kWh) per system, and multiple systems parallel up to 180kWh. More power modules also mean faster charging and more loads in an outage, so size them for your largest loads up front.

Can I take it with me if I sell the house?

Not practically. Like a Powerwall, the X1 is hardwired and becomes a fixture of the house. One buyer chose a portable EcoFlow Delta Pro Ultra for that reason, planning to roll it into a storage shed when the house sells.

Head to head