Post Mount 6

1.5 kW Off Grid Solar – Mt. Pleasant

Date: March 14, 2016

This Off Grid solar power system is an example of how effective a small system can be.  Many people think that ‘bigger is better’. However in this example, this is definitely not the case. The owners rarely go below 90% charge at night, they also have a 3 kW Outback inverter, which can deliver 3 kW continuously, meaning that the fridge, water pump, lights and washing machine can all be used at once.

Although only a 1.5 kW solar array, which has been mounted on a single post in site specific location to gain the most amount of sun possible can also be manually shifted East-West and azimuth (the sun’s angle over Summer/Winter) to gain up to an additional 30-40% more solar PV power.

The deep-cycle battery bank supplies over 3 days of electrical energy, based on the customers demands from the energy audit prior to installation. In the advent of overcast weather the owners still have continuous and reliable power. Once the sun shines again, the 1.5 kW array recharges the battery bank in less than 2.5 days, even whilst using power.

This Off Grid Solar system comprises of 6 x 250 Watt Suntech solar panels, Midnite Solar 80 Amp MPPT solar charger, Outback VFX 3024E 3000Watt/ 85 Amp inverter/charger and 12 x 700 Amp-hour Exide Energystore Gel deep-cycle batteries. The Outback inverter/charger can deliver a massive 5750 Watts of surge power!

The Midnite Solar mppt (maximum power point tracker) charger can deliver 80 Amps continuous, has easy to use display and records information in and out of the whole system. The owners can increase the size of this system up to 3 kW, as the Midnite charger was selected for future proofing, however, like any system the battery bank remains at the heart of the system.

This example of an Off Grid Solar system illustrates that it is not all about size, often it’s about brains. This system supplies all essential power to a household including 1 fridge/freezer, lighting, kitchen appliances, washing machine, computers, entertainment equipment, power tools, water pump etc. It was a solution of getting reliable electricity to a site where the main electricity was more than 1 kilometre.

View photos of this Off Grid Solar system below;


Above, a Clenergy Post Mount (PM6) is an effective way of installing a solar array frame in a bush setting, especially when the dwelling is too shaded or may impinge on the aesthetics.

ControlsAbove, control board layout with Midnite Solar 80 Amp MPPT and Outback Power 3 kW inverter.


Above, control board and battery bank before walls fitted.