Stand Alone System / Off-Grid System

If you are living in a remote area where you are not connected to the main electricity grid or want to be 100% independent in your power use, installing an off-grid solar power system for your electricity needs could be the best solution.

If you decide to go off grid, you will need solar panels, a charge controller, an inverter and batteries where you can store excess solar electricity. These batteries will supply you with energy even when there is no sunshine. The sun shining onto your solar panels will generate DC (direct current) electricity, which is fed into a regulator. Once your batteries are charged, you can run your electrical appliances directly off the batteries or route the direct current through an inverter which converts the electricity and will let you run all your standard household appliances.

Example: 5 kVA Stand-alone system

5 kVA inverter/charger

100 Amp charge controller

12 x 255 W polycrystalline solar panels

24 x 1660 Ah 2 V batteries

Combiner box, fuses, breakers, cable, railings, connectors.

Backup power : 40 kW @ 4kW = 10 hours

Battery Backup/UPS

We have UPS or backup solutions for when the utility fails. When the utility fails the UPS changes over automatic within milliseconds. The inverter is sized by your load you want to use and the batteries are sized to the backup time you want when the utility fails.

Example: 5 kVA (4000 W) load for 3 hours backup

Inverter/charger 5 kVA

8 x 12 v 260 Ah batteries

Cable, breakers, etc.

12 480 kW/h ÷ 4000 W = 3.1 hours backup @ 50% depth of discharge

This pumping solution is used where there is no utility and is too expensive to get the utility on the site. A normal existing 230 V or 380 V pump can be used for pumping. A solar pump controller is used to convert the DC, of the solar panels, to 230 V or 380 V AC. The system runs only during normal sun hours. Applications from 0.75 kW – 250 kW can be used. The PV modules for this system is sized 1.8 – 2 times the size of the motor. Your pumping cost will be zero for 25 years.

Example: 11 kW pump + motor

11 kW solar pump controller (solar VSD)

86 x 255 W polycrystalline solar panels

Railings, cable, connectors, etc.

And your pump is running for FREE!