Base Kit 3 Off-Grid 7.9kW Residential Solar Power System

Base Kit 3 Off-Grid 7.9kW Residential Solar Power System
Base Kit 3 Off-Grid 7.9kW Residential Solar Power System
$12,122.66 List price $16,305.28

Estimate Shipping
Select from the hand designed upgrades below
Battery Bank Options
Add-Ons for Off Grid Kit 3 - Flooded LA Battery Option
Mounting Options
Item code Model number
KITOFFGRIDBASE3 Off-Grid 7.9kW System

Off Grid 7.9kW Solar Power System

This is the largest of our off grid solar power systems that altE has designed - just for you! Depending on your needs, we have a system to get your started.

  • First, you need to decide what your daily power needs are. This will help determine which size system is appropriate for you. If you need help sizing a system for your off grid home, start by checking out our Off Grid System Calculator.
  • Next, find where you live on the map below. This will show you he amount of daily power, in hours, received each day, on an optimally tilted surface during the time of year when there's the least amount of sun.
  • Then, what type of energy storage is best for your needs? Do you like low maintenance, lowest cost option, longest cycle life? See the Battery Option chart below to help you decide.
  • Lastly - how do you want to mount your system? Is your roof in good shape, free from tree/building shadows, and south facing? Or do you have enough open land to do a ground mount or pole mount system? What's your climate where you live- do you have heavy snow loads?
  • How much power will I get from this system?

    7.9kW Insolation Map

  • So if you lived in the Northeast for example, at 13.9kWh of daily power, you'd get on average 417 kWh of power each month
  • If you lived in Florida, at 25kWh of daily power, you'd get on average 750 kWh of power each month
  • Southwest areas of the country, at 36kWh of daily power, can get on average 1080 kWh of power each month

  • Base Components of this Off Grid System:

    The solar panels and the pre-wired inverter/charge controller system and components are included in the base kit. Battery bank and Mounting solutions are options that you can add on.  NOTE:  The image of the solar panels above is representational.  The correct panel will always be listed in the table below.

    Off-Grid 7.9kW Solar Power System Includes:
    Part Number
    Item Description Quantity
    Trina 330 Watt Mono All Black Solar Panel 24
    30' MC4 Connector Cable #10 AWG 2
    50' MC4 Connector Cable #10 AWG 4
    100' MC4 Connector Cable #10 AWG 2
    Wiley PV Cable Clips 28
    Disconnect Key for Solar Panel Connector Cables 1
    1/2" Strain Relief, 2 Round Holes/Locknut 8
    Outback FLEXware PV12 Combiner Box 1
    20 Amp Din Rail Mount Breaker 8
    Dual VFXR3648A 7.2kW FLEXpower TWO Prewired System 1
    Solar Surge Protection Device - 300V DC 2
    altE Battery to Inverter Cables, 4/0 10', Pair 1


    For Battery Bank Options, decide from the table below and add to cart above:

    Battery Type Trojan L-16-RE-2V Premium Flooded Lead Acid Battery

    Trojan Flooded Battery
    Outback EnergyCell 1300RE 48V Battery Bank

    Outback 1300RE 48V Sealed Battery
    KiloVault Lithium Battery

    KiloVault Lithium Battery
    # of Batteries in Kit
    (Necessary cables also included)
    (24) Trojan L-16-RE-2V Flooded Lead Acid Batteries Outback 1300 RE 48V Racked Battery Bank (24) (8) KiloVault 3.6kWh
    Lithium Batteries
    Maintenance (Watering) Yes No No
    Maximum Recommended Depth of Discharge (DoD) 50% 50% 80%
    # Cycles at Max Recommended DoD 1600 1800 5000
    Battery Voltage 2V 48V 12V
    Battery Amp-Hours (C/20 Charge Rate) 1110 Ah 1148 Ah 300 Ah
    Battery Watt-Hours (C/20 Charge Rate) 2220 Wh 55104 Wh 3600 Wh
    Total Battery Bank Capacity (C/20) 53.3 kWh 55.1 kWh 28.8 kWh
    Maximum Useable Capacity
    at Max DoD
    26.65 kWh 27.5 kWh 23.04 kWh
    Average Price Per Battery $372 $16000 $2279
    Average Cost/kWh Cycle* $.20 $.32 $.15
    Average Lifespan 7 years 8 Years 13 Years
    Operating Temperature Range -20° to 45°C -23° to 60°C 0° to 45°C
    Weight Per Battery 118 lbs 180 lbs 85 lbs
    Warranty 2 Years 2 Years 7.5 Years
    Country of Origin USA China China
    Pros Smart Carbon technology for 15% improved cycle life.
    Least expensive option up front.
    Nano Carbon technology improves charge/discharge.
    Avg cost up front.
    Maintenance Free.
    Maintenance Free.
    Modular and lightweight.
    Safe, non-toxic,
    environmentally benign.
    No cooling or ventilation needed.
    Lowest lifetime cost.
    Cons Maintenance required (watering).
    Replacement costs (~4X over life of solar system).
    Requires ventilation due to off-gassing.
    Limited to 4 strings in parallel.
    Replacement costs (~4X over life of solar system). Highest up front cost.

    *Average Cost/kWh Cycle = (Avg Price Battery/(# Cycles x DoD X Wh)) x 1000

    For Mounting Options, decide from the table below and add to cart above:

    Mounting Type Roof Mount Option

    IronRidge Roof Mount Option
    Ground Mount Option

    IronRidge Ground Mount Option
    Top of Pole Mount Option

    Top of Pole Mount Option
    Kit Includes IronRidge XR1000 14' Rails, clamps, and flashing IronRidge XR1000 14' Rails, clamps, and caps/connectors

    (Does not include Schedule 40 pipe to be sourced locally)
    (Qty 2) MT Solar 12 Module Mount w/Crank and Hoist, IronRidge Rails XR1000 14' Rails, Clamps, Combiner Box

    (Does not include Schedule 40 pipe to be sourced locally)
    Snow Load PSF Up to 70 PSF Up to 90 PSF Up to 50 PSF

    * To take a look at technical spec pages, installation manuals, warranty information, etc. click on each item in the chart to go to that Spec Page.

    Write a review

    There are no reviews for this product.

    Click here for BBB Business Review ASE NESEA Member
    Paypal Visa MasterCard Amex Discover
    McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams