Off-Grid Solar Systems

Perks
No access to the utility network: Solar off-grid systems are more economical than extending power lines in particular isolated areas. Assess getting off-grid if you’re over 100 yards from the grid. The overhead transmission line prices range from $174,000 per mile to $11,000,000 per mile.

Become energy self-sufficient: Living off the network and being self-sufficient feels good. For some, it’s a form of security. Power failures on the network do not affect off-grid solar systems.

Equipment Required

General off-grid solar components:
Solar Charge Controller
Battery Bank
DC Disconnect
Off-Grid Inverter
Backup Generator

Solar Charge Controller: Solar charge controllers are charge regulators or just battery regulators. It restricts the rate of current being delivered to the battery bank and protect the batteries from overcharging.

Good charge controllers maintains the health of batteries that ensures the lifetime is maximized. If you have an inverter, the charge controller is typically integrated.

Battery Bank: Without a battery bank it’ll be lights out by sunset. A battery bank is a cluster of batteries wired together.

DC Disconnect Switch: AC and DC safety disconnects are need for all systems. One additional DC disconnect is installed between the battery bank and the off-grid inverter. It’s needed to switch off current flowing between components. It’s vital for maintenance, troubleshooting and protection against electrical fires.

Off-Grid Inverter: You’ll need an inverter to convert DC to AC for all other electrical appliances. Off-grid inverters don’t have to match phase with the utility sine wave opposed to grid-tie inverters.

Electrical current flows from the solar panels through the solar charge controller and the bank battery bank before it’s converted into AC by the off-grid-inverter.

Backup Generator: Installing a backup generator that runs on diesel is a good choice. Generators can run on propane, petroleum, gasoline and many other fuel types. They generally output AC sent through the inverter for direct use, or it converted into DC for battery storage.

Batteries, inverter, and electronic controls are installed in a utility room inside or near the residence. Electronic equipment mounts on 4 to 5 feet of wall within 8 to 10 foot cable length from the batteries. Equipment could be installed on the outside wall of a separate battery closet.

Batteries take 2 to 15 square feet of floor space within the cable length from wall mounted equipment, and should be beside, rather than in front of wall mounted equipment. Allow ample working room to check batteries.

Components a place that’s clean, and away from moisture condensation. If you’d like further information, click here.

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