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Off-Grid inverters

In stock
SMA Sunny Boy Inverter 6kw SB-6.0-1SP-US-41 240v - A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 6000
In stock
SMA Sunny Boy Inverter 3kw SB-3.0-1SP-US-41 240v | A1 Solar Store
Input Voltage DC 480
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 4800
In stock
SMA Sunny Boy Inverter 7kw SB-7.0-1SP-US-41 240v - A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 7000

Complete guide on solar systems

Learn how solar panels works and choose the one that suits your needs best

In stock
SMA Sunny Boy Inverter 3.8kw SB-3.8-1SP-US-41 240v - A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 3840
In stock
SolarEdge Inverter 10.0Kw SE-10000H-US000BNU4 Buy online | A1 Solar Store
Input Voltage DC 400
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 10000
In stock
SolarEdge Inverter 5Kw SE5000H-US 240v - A1 Solar Store
Input Voltage DC 480
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 5000
In stock
SolarEdge SE7600H US000BNU4 7.6Kw Inverter 240v | A1SolarStore
Input Voltage DC 480
Output Voltage AC 240
Type Off-Grid Inverters
Watts 9300
In stock
SolarEdge SE6000H US000BNU4 6.0Kw Inverter 240v - A1SolarStore
Input Voltage DC 480
Output Voltage AC 240
Type Off-Grid Inverters
Watts 9300
In stock
SolarEdge Inverter 3.8Kw SE3800H-US 240v - A1 Solar Store
Input Voltage DC 480
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 3800
In stock
SMA Sunny Boy Inverter 5kw SB-5.0-1SP-US-41 240v - A1 Solar Store
Input Voltage DC 480
Output Voltage AC 240
Type Off-Grid Inverters
Watts 5000
In stock
SolarEdge 33.3 KW 3 Phase Inverter 33.3K-US 480v | A1 Solar Store
Input Voltage DC 980
Output Voltage AC 480
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 33300
In stock
SMA Sunny Boy Inverter 6w SBS-6.0-US-10 240v - A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 6000
In stock
ENPHASE IQ7 Microinverter IQ7-60-2-US | A1SolarStore
Input Voltage DC 60
Output Voltage AC 240
Type Micro inverter, Grid-Tie Inverters, RV & Marine Inverters
Watts 250
In stock
Enphase IQ7+ Microinverter IQ7PLUS-72-2-US | A1 Solar Store
Input Voltage DC 60
Output Voltage AC 295
Type Micro inverter, RV & Marine Inverters
Watts 295
In stock
SMA Sunny Boy Inverter 5kw SBS-5.0-US-10 240v - A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 5000
In stock
SolarEdge 3.0kW Inverter SE-3000H-US000BNU4 | A1 Solar Store
Input Voltage DC 480
Output Voltage AC 240
Type Off-Grid Inverters
Watts 3000
In stock
SolarEdge 3800H US000BNU4 3,8Kw Inverter 208v - A1 Solar Store
Input Voltage DC 480
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 3800
In stock
SMA Sunny Boy Inverter 3,8kW SBS-3.8-US-10 240v | A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 3800
In stock
SolarEdge 14.4Kw Inverter Three Phase 208v | A1SolarStore
Input Voltage DC 600
Output Voltage AC 14400
Type Off-Grid Inverters
Watts 19400
In stock
Solaredge Optimizer 400W Buy online - A1 Solar Store
Input Voltage DC 80
Output Voltage AC 60
Type Power Optimizers
Watts 400
In stock
SolarEdge SE-P860 Power Optimizer 860W - A1 Solar Store
Input Voltage DC 60
Output Voltage AC 85
Type Power Optimizers
Watts 860
In stock
SolarEdge Inverter 9kw KU21045 Three Phase | A1 Solar Store
Input Voltage DC 500
Output Voltage AC 229
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 9000
In stock
Fronius Symo 7kW Inverter LITE 22.7-3 22 Advanced - A1 Solar Store
Input Voltage DC 720 V
Output Voltage AC 480
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 22727
In stock
OutBack Power SkyBox Inverter buy online - A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters, Hybrid Inverters
Watts 5000
In stock
Fronius Primo 15kW Inverter FRO-P-15.0-1-208-240 240v | A1 Solar Store
Input Voltage DC 1000
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 15000
In stock
Fronius Primo 6kW Inverter FRO-P-6.0-1-208-240 240v - A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 6000
In stock
SolarEdge P400 Power Optimizer SE-P400 - Solar System Addons - A1SolarStore
Input Voltage DC 80
Output Voltage AC 60
Type Power Optimizers
Watts 400
In stock
Fronius Primo 8.2kW Inverter FRO-P-8.2-1-208-240 240v | A1 Solar Store
Input Voltage DC 480
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 8200
In stock
Fronius Primo 3.8kW Inverter FRO-P-3.8-1-208-240 240v - A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 3800
In stock
Fronius Symo 15kW Inverter LITE FRO-S-15.0-3-208L 208v - A1 Solar Store
Input Voltage DC 325
Output Voltage AC 208
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 15000
In stock
Fronius Primo 5kW Inverter FRO-P-5.0-1-208-240 240v - A1 Solar Store
Input Voltage DC 600
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 5000
In stock
Fronius Symo 12kW Inverter FRO-SA-12-3-208L Advanced 208v - A1 Solar Store
Input Voltage DC 1000
Output Voltage AC 240
Type Off-Grid Inverters, Grid-Tie Inverters
Watts 12000

Off-grid inverters

Many homeowners prefer to go off-the-grid to become completely energy independent. The thing is that off-grid solar systems aren't connected to the electricity grid, so they will continue working even if the public power grid is not functioning. However, this is only achievable with reliable solar equipment, such as a good off grid inverter.

How off grid solar inverters work

PV modules use the solar power and turn it into direct current (DC). It can power lighting in your home and chargers for small devices, like a smartphone. But most home appliances function on alternating current (AC). This is where an inverter comes into play: it turns direct current into alternating. The efficiency of an inverter is close to 100%, which means that almost no power loss occurs while it's working.

DC-AC converting is not its only function. Solar off grid inverter also gives the owner an option to monitor the functionality of the whole system. Besides, inverters can act as power output maximizers: they track the voltage of panels and identify the optimum operational power for the whole array.

How is an off-grid inverter different from a grid-tied inverter?

You can’t use a grid-tie inverter for an off-grid solar PV system. It can easily damage the whole system and here is why.

Grid tied inverters have a control device to match the inverter cycles with the utility grid cycles. They need to be in phase, otherwise the voltages will cancel each other out. When there is no reference cycle, like in an off-grid system, the matching circuit disconnects the solar power to prevent electricity from backfeeding into the grid.

Are off grid micro inverters any good?

Microinverters are more popular in America than anywhere else. This type of inverter is installed directly on a panel, so that DC turns into AC right on the spot. It is a good choice when your panels are subjected to shading, because weak performance of one panel doesn't affect others. Microinverters make a system more efficient and don't occupy a lot of space. That is why a lot of homeowners prefer microinverters for off grid systems.

How to size an off grid inverter

The size of a solar inverter is usually measured in Watts. When purchasing an off grid inverter, you have to make sure it suits the size of your solar panel system. For example, if your solar panel array has a combined power of 5kW then a 5,000 W inverter should be just right for it. Consult with the manufacturer when in doubt and read the guidelines. Keep in mind, that if your inverter is not sized properly for your system, in case of malfunctioning you might not be able to get compensation through the warranty.

How to choose the best off grid inverter

There is a range of off grid inverters suitable for different budgets and energy needs. When looking for one, consider the following things:

  • Efficiency. This is how much power the inverter delivers from the batteries to your home under the perfect conditions. A good efficiency rating is from 94% to 96%.
  • Self-consumption. It shows how much power the inverter will consume when idle.
  • Battery charger output. Many off-grid inverters have a battery charger to recharge the batteries in winter with a backup generator. A good off-grid inverter will have a battery charger in the range of 50-100 amps DC.
  • Temperature range. Inverters are sensitive to weather extremes. If possible, it is best to place an inverter in a garage or in another sheltered location, where it's safe from rain, snow and direct sunlight.
  • Warranty. Normally, inverters come with up to a 10 year warranty.
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