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Off-Grid 4kW Residential Solar Power System - Base Kit

Off-Grid 4kW Residential Solar Power System - Base Kit
Off-Grid 4kW Residential Solar Power System - Base Kit
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$7,714.24 List price $12,250.40

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Select from the hand designed upgrades below
Battery Bank Options
Mounting Options
Item code Model number
KITOFFGRIDBASE1 Off-Grid 4kW System

Off Grid 4kW Solar Power System

Looking for an off grid system that will power your cabin, home, or other remote location? Look no further. altE has designed several kits that give you the option to choose the best sytem for your needs - whether you're looking for a roof mount system, a ground mount system, or a pole mount system, or if you have a preference of a battery technology for your energy storage. There is also the option of adding wind power to your off grid system, for a hybrid alternative that complements solar perfectly. These kits are designed to provide you with most everything you need to go off the grid. The performance of each off grid solar power system will vary greatly based on the location where it is installed. See the map below to see the solar potential in your area. And, if you need help sizing a system for your off grid home, start by checking out our Off Grid System Calculator.

How much power will I get from this system?

Find your location on the Map. This map shows the 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.

Insolation Map

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.

Off-Grid 4kW Solar Power System Includes:
Part Number Item Description Quantity
KYO270KU2706MCA Kyocera 270 Watt Solar Panel 15
PVCH4-30FT 30' H4 Connector Cable #10 AWG 2
PVCH4-50FT 50' H4 Connector Cable #10 AWG 3
GENH4KEY Unlock Key H4 Connectors 1
GENSR-2HOLES-LN 1/2" Strain Relief, 2 Round Holes/Locknut 5
GENSR-1HOLE-LN 1/2" Strain Relief, 1 Round Holes/Locknut 1
MIDMNPV6 Midnite Solar MNPV6 Combiner Box 1
GENBRKDIN-15 15 Amp Din Rail Mount Breaker 5
MIDMNSW4048C150 Pre-Wired Power Panel - Schneider Conext SW 4048 and Midnite Classic 150 MPPT Charge Controller 1
MIDMNSPD-115 Solar Surge Protection Device - 115V DC 1
ALTBC-2/0-120RB altE Battery to Inverter Cables, 2/0 10', Pair 1

Let's start with Solar Panels:

Kyocera Solar Panel This 4kW off-grid residential home solar system features fifteen (15) Kyocera 270 Watt Multicrystalline Solar Panels. Kyocera solar panels have again ranked as the ONLY module to rank in the Top Performer group in all of the categories in the new 2016 PV Module Reliability Scorecard. The first Scorecard was done in 2014, where they also ranked in the "Top Performer" group in all of the categories. Click Here to read article. Kyocera's advanced cell processing technology and automated production facilities have produced a multi-crystal solar cell with an efficiency of over 16%. All Kyocera solar panels are constructed using a tempered glass front, EVA pottant and a PVF backing to provide maximum protection from the most severe environmental conditions. The entire laminate is framed in a heavy duty anodized aluminum frame to provide structural strength and ease of installation. Because Kyocera solar modules are so efficient less space is required than other solar panels of equal output. This translates to both more wattage per square foot and lower mounting structure cost.

Next we need the Inverter and Solar Charge Controller System:

MNSW 4048 Prewired System

The inverter in a renewable energy system will convert the DC power from the solar panels to usable AC power for your home. The charge controller does several things, most importantly keeping your batteries from overcharging, and an MPPT charge controller will allow your solar panels to operate at their optimum power output voltage, improving system performance by up to 30%. In this kit, Midnite Solar Pre-Wired Inverter System takes the guesswork out of installing a battery based inverter system, saving you valuable time. With a pre-wired solution, the confusion is taken out of selecting all the right parts. This system uses the Schneider Electric Conext SW 4048 Inverter/Charger that is rated at 4,000 watts and uses a 48 volt battery. It produces 120/240 volts AC. The Conext SW is a convenient combination of an inverter, multi-stage battery charger, and transfer switch in one electronic device. The Midnite Solar Classic 150 MPPT Solar Charge Controller is the only MPPT charge controller with both ground fault and arc fault protection built in, providing the greatest protection for your system. And it's made in the USA!

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

Battery Type Trojan L-16-RE-B Premium Flooded Lead Acid Battery
Trojan Flooded Battery
Outback EnergyCell 200NC Sealed AGM Battery
Outback 200NC Sealed Battery
Aquion S30 Saltwater Battery
Aquion Saltwater Battery
SimpliPhi Power Lithium Battery
SimpliPhi Power Lithium Battery
Battery Bank Item Code KIT1BATTOPTFLA KIT1BATTOPTAGM KIT1BATTOPTAQU KIT1BATTOPTLION
# of Batteries in Kit
(Necessary cables, access also included)
(8) Trojan L-16-RE-B Flooded Lead Acid Batteries (8) Outback 200NC Sealed AGM Batteries (7) Aquion Saltwater Battery Stacks (5) SimpliPhi 3.4-48V Lithium Batteries
Maintenance (Watering) Yes No No No
Maximum Recommended Depth of Discharge (DoD) 50% 50% 80% 80%
# Cycles at Max Recommended DoD 1600 3000 3750 10000
Battery Voltage 6V 12V 48V 48V
Battery Amp-Hours (C/20 Charge Rate) 370 Ah 178 Ah 48.3 Ah 67 Ah
Battery Watt-Hours (C/20 Charge Rate) 2220 Wh 2136 Wh 2318 Wh 3440 Wh
Total Battery Bank Capacity (C/20) 17.7 kWh 17.1 kWh 16.2 kWh 17.2 kWh
Maximum Useable Capacity
at Max DoD
8.88 kWh 8.54 kWh 13 kWh 13.7 kWh
Average Price Per Battery $359 $499 $1195 $3675
Average Cost/kWh Cycle* $.20 $.16 $.17 $.13
Average Lifespan 7 years 8 Years 10 Years 15 Years
Operating Temperature Range -20° to 45°C -23° to 60°C -5° to 45°C -20° to 60°C
Weight per Battery 118 lbs 131 lbs 260 lbs 75 lbs
Warranty 2 Years 2 Years 8 Years 10 Years
Country of Origin USA China USA USA
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.
Safe, non-toxic saltwater technology.
Maintenance Free.
Regularly cycled down to 90% DoD.
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).
Limited to 4 strings in parallel.
Replacement costs (~4X over life of solar system). Freezing temps may affect capacity.
Not ideal for powering high surge equipment.
Highest up front cost.

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

In the above chart, we are referring to the following Battery Options for this Kit:

  • Trojan Premium Flooded Lead Acid Batteries with Smart Carbon technology offer 15% improved cycle life and faster recharge than traditional lead acid batteries. Additionally, it will help overcome some of the issues found with PSOC (partial state of charge) situations that storage batteries will see quite often in PV systems. While Flooded Lead Acid batteries are often the least expensive option up front, you do end up spending slightly more in the long run, as they have to be replaced more often. Also, they do require maintenance, so periodic watering is required. There are design constraints to consider, as these batteries are limited to 4 parallel strings.
  • Outback Power Energy Cell Sealed AGM Batteries with Nano Carbon technology improves charge efficiency and allows PSoC (partial state of charge) operation with improved deep discharge recovery. This is a secondary lower up front option, and need to be replaced about as often as flooded batteries - but they're maintenance free. So if you aren't able to be present at your off grid location to water the batteries, this may be a more appropriate option.
  • Aquion Saltwater Batteries with Aqueous Hybrid Ion technology is the only Cradle to Cradle energy storage product on the market, certified to be safe for the environment from creation to recyling. A safe and non-toxic battery - wow! Also maintenance-free, they are designed for stationary, long-duration cycling applications, and deliver extremely long cycle life. These batteries can also be regularly cycled down to 90% depth of discharge, and at the higher cycle life, this allows for more useable stored energy and an overall longer lifespan. While multiple stacks can be wired together in parallel, each stack has a current limition of 17 amps. So if high-draw loads are needed - ie. motors or pumps - this may not be the appropriate storage option.
  • SimpliPhi Power Lithium Ferro Phosphate (LFP) Batteries are a drop-in replacement for lead acid batteries, and are much safer. They are modular, lightweight, and scaleable for small to large installations. And better yet - no maintenance, no cooling, and no ventilation required! While this technology is still the highest up front cost, you still get the lowest cost over the life of the system.
  • For Mounting Options, decide from the table below and add to cart above:

    Battery 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
    Mounting Option Item Code KIT1ROOFOPT KIT1GROUNDOPT DPW-UTPM6
    Kit Includes IronRidge XR100 11' Rails, clamps, and flashing IronRidge XR1000 11' Rails, clamps, and caps/connectors DPW Module Rails, Crossbars, to support 6 Solar Panels
    PSF Up to 70 PSF Up to 90 PSF Up to 30 PSF

    Recommended Add-Ons for this Kit:

    Recommended Add-Ons Inverter/Charger
    Part Number Item Description
    SCNCONCOMBOX Schneider Electric Conext ComBox Communication Device
    XANXWPLBATTMON Schneider Electric Battery Monitor
    XANXWPLAUTOGENS Schneider Electric Auto Generator Start
    SCNCONSWSWITCH Schneider Electric Conext SW Remote On/Off Switch
    GENLABELKIT2014 NEC 2014 Compliant Solar Label Kit
    Recommended Add-Ons Wind Option
    Part Number Item Description
    SOUAIR40-48V Primus Air 40 48V Wind Turbine
    SOUAIR-STOPSWCH Primus 3-Position Stop Switch for Wind Turbines
    SOUAIR-TTU-27 Primus 27ft Tilt Up Tower Kit
    SOUAIR-TTU-45 Primus 45ft Tilt Up Tower Kit
    OUTPNL-5-AC/DC 5A 150VDC 120VAC Panel Mount Breaker
    Recommended Add-Ons Batteries
    Part Number Item Description
    OUTIBR-2-48-175 Outback 2-Shelf AGM Battery Rack 48V
    OUTIBR-3-48-175 Outback 3-Shelf AGM Battery Rack 48V
    GENHYDROMETER Hydrometer for Flooded Battery option
    GENWATERFILLER Distilled Water Filler Jug for Flooded Batteries
    ZEPPVENT-12V Zephyr Power Vent 12V Box for Flooded Batteries
    DPW-CSE DPW Chest Style Enclosure for Flooded Batteries

    * 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.


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