Sol-Ark 12k Inverter: All-In-One, Stackable

Sol-Ark 12k Inverter: All-In-One, Stackable

The Sol-Ark 12k is a hybrid, all-in-one solar inverter with limitless applications. This highly efficient inverter is simple, innovative, and powerful.

Are you an installer or contractor looking for a Sol-Ark? Contact us today!

Need help? Call us or request a consultation for a proper design  for your scenario and balance of system (BOS).



The Sol-Ark 12k inverter has an entirely new range of use than its sister Sol-Ark 8k inverter. The Sol-Ark 12k is an all-in-one pre-wired inverter system that features new capabilities such as systems gains and true three phase. It is the most efficient and cost-effective inverter in its class by a long stretch, just see the inverter comparison chart below. This solar inverter can be used off-grid or on grid, is “battery agnostic”, and expandable up to 72 kW! It is truly limitless.

The Sol-Ark 12k is a pre-wired system that contains the inverter, charge controller, and more, all in one package; no fuses, breakers, or combiner boxes necessary! With minimal additional hardware required, your install stays simple and low-cost.

Sol-Ark inverters also do not have expensive battery restrictions like other solar inverters do, and can be used with a wide variety of 48V battery chemistries, from lead to lithium. When stacked up against equivalent systems, the Sol-Ark 12k is not only the most affordable, but also the most efficient and innovative solar inverter on the market!

  • Limitless – Parallel Stacking, Grid Sell, Meter Zero, Time of Use, Smart Load, AC Coupling, Peak Shaving, 20kW Peak Power
  • Highly Accelerated Life Testing – Proven to last well beyond the standard 10 year warranty
  • Engineered, Serviced, and Tested in the USA – Talk to a US Based Engineer 7 days a week
  • No Glitch Switch (4ms) – Fastest transfer time in the industry.
Sol-Ark 12k Applications:
  • Grid-Tied Mode – Sell power back to the Utility to reduce your electric bill
  • Meter Zero Mode – Zero your electric bill without adding an additional smart meter
  • Time-Of-Use Mode – Use solar and batteries to minimize grid power usage when it’s most expensive
  • Smart Load Mode – Use a programmable output for high-power off grid loads or grid
  • Time-of-use loads – to run only when there is optimum solar – use excess PV power when batteries are full
  • Off Grid applications – battery agnostic
  • AC Coupling – retrofits to existing grid tie systems
  • Battery backup applications
Sol-Ark 12k Technical Features: 
  • Transformerless inverter
  • Pure sine wave
  • 120/240/208V
  • Grid-tie, off-grid, or hybrid applications (can be with or without batteries)
  • Wide variety or 48V battery chemistries, from lead to lithium
  • Simultaneously manages power to battery, loads, and grid (max 9.6 kW to AC loads/grid)
  • 12 kW solar PV continuous power
  • 9.6 kW Inverter AC continuous power on-grid (8 kW off-grid)
  • 8kW Inverter DC continuous power
  • Expandable (up to 72 kw)
  • Highly efficient (96.5% PV to AC efficiency means less solar required)
Sol-Ark 12k User Features and Integrations:
  • Color touch screen
  • Remote monitoring from smart device
  • 2 built in 500V MPPT charge controllers
  • Battery disconnect
  • Battery temp sensor
  • Auto-generator start
  • Rapid shut down signal
  • Current sensors
  • Battery communication
  • PV Disconnect
  • Wiring knowckouts
  • WiFi
  • Front-access AC breakers
Sol-Ark 12k vs Sol-Ark 8k

The Sol-Ark 12k was released in response to requests for “a Sol-Ark 8k with more power”. Listed below are the updated features found in the Sol-Ark 12k inverter:

  • More Solar PV power (12 kW vs. 8 kW)
  • More Inverter AC power (9.6 kW vs 8 kW)
  • Systems gains capabilities (up to 6 systems gains)
  • 3 phase capability
  • DC breaker
  • Front access points to AC breaker

Most residences will not need to amount of power that the Sol-Ark 12k offers. The best applications for the Sol-Ark 12k are off-grid, big gains, and time of use. For smaller scale systems, we highly recommend the Sol-ark 8k. Contact us for help figuring out which inverter is right for you!



Call us or request a consultation for a proper design for your scenario and balance of system (BOS).

Monitor it from anywhere!

Sol-Ark 12k: Everything You Need to Know

Sol-Ark 8k vs Sol-ark 12k







    Output Power: 12,000W
    Max allowed PV power: 9,000W + 9,000W = 16,500W
    Max PV power delivered to battery & AC outputs: 12,000W
    Max DC voltage: [email protected], [email protected]
    MPPT voltage range: 150 – 425V
    Starting voltage: 175V
    Number of MPPT: 2
    Solar strings per MPPT – 2 w/o fuses, 3 w/ fuses
    Max DC current per MPPT (self-limiting):
    [email protected], [email protected]
    Max AC coupled input (micro/string inverters): 7,600W


    Output Power: 9,600W on grid & 8,000W off grid
    Connections: 120/240/208 split phase
    Continuous AC power to grid (on grid): 9,600W 40A L-L (240V) / 4,800W 40A L-N (120V)
    Continuous AC power to grid (off grid): 8,000W 40A L-L (240V) / 4,800W 40A L-N (120V)
    Surge AC power (5 sec): 20,000VA L-L (240V) / 10,000VA L-N (120V)
    Parallel Stacking: 2-3 (240V), 3 or 6 (208V)
    Frequency: 60/50Hz
    Solar strings per MPPT: 2 w/o fuses, 3 w/ fuses
    Continuous AC power with grid or Generator : 12,000W 50A L-L (240V) / 6,000W 50A L-N (120V)
    CEC Efficiency: 96.0% (peak 97.0%)
    Idle Consumption typical – no load: 60W
    Sell back power modes: Limited to household or full grid-tied
    Design (DC to AC): Transformerless DC
    Response Time (Grid-tie to Off-grid): 4ms
    Power Factor: +-0.9-1.0

BATTERY (optional)

    Output Power: 8,000W
    Type: Lead-acid or Li-ion
    Nominal DC Input: 48V
    Capacity: 90 – 2,000Ah
    Voltage range: 43.0 – 61.0V
    Continuous Battery charging output: 190A
    Charging curve: 3 stage w/ equalization
    Grid to Battery charging efficiency: 96.0%
    External temperature sensor: included
    Current shunt for accurate % SOC: integrated
    External generator start based on voltage or % SOC: integrated
    Communication to Lithium battery: CanBus & RS485


    Dimensions (H x W x D): 28.0″ x 17.375″ x 9.37″
    Weight: 77 lbs
    Enclosure: NEMA type 1 (Indoor use)
    Ambient Temperature (3 variable speed fans): -25 to 55 oC, >45oC derating
    Display: Color touch screen
    Wi-Fi Communication (monitoring or SW updates): included
    Snap on sensors for limited selling to household: included
    Standard warranty (verified by HALT testing): 10 years


  • PV DC disconnect switch NEC 240.15
  • Ground fault detection NEC 690.5
  • PV rapid shut down control NEC 690.12
  • PV Arc fault detection NEC 690.11/UL1699B
  • PV input lightning protection
  • AC input/output 50A breakers
  • Battery breaker / disconnect
  • User wiring enclosure with 3/4″ and 1″ knockouts
  • *Optional* Solar Flare / EMP Hardened to 2015 MIL-STD-461G (independently tested June 2018)
  • Electronics certified safety by SGS labs to NEC & UL specs – NEC 690.4B & NEC 705.4/6
  • Grid Sell Back – UL1741-2019/2018, IEEE1547a-2003/2014, FCC 15 Class C, UL1741SA, CA Rule 21, HECO Rule 14H


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