On Grid

The sun shines on the solar panels generating DC electricity. The DC electricity is fed into a solar inverter that converts it to AC electricity. The 240V AC electricity is used to power appliances in your home. Surplus electricity is fed back into the main grid.

Off Grid

Sun shines on the solar panels generating DC electricity. The DC electricity is fed into a regulator which controls the amount of charge, Deep cycle batteries are charged. 12 volt appliances can be run directly off the batteries or the current routed through an inverter which converts it to AC electricity; suitable for running standard home appliances.

Hybrid System

When choosing a solar power system, most households and businesses choose either a grid-connected or an off-grid system. But there's a third option. A hybrid solar system combines the best of both worlds: the convenience of a grid connected system — including the ability to earn Feed-In Tariff credits — with the extra peace of mind of a battery backup. This means that even during a power blackout, you still have electricity.

Hybrid with DG

The hybrid system is meant for backup power in case of a power shortage, say during the peak demands. It also reduces downtime during maintenance or repairs since the system on its own, ensures that all the components are used efficiently at an optimum rate. For example, during the day, the solar modules will generate energy in the form of Direct Current (DC) and is stored in the battery or straight away put to use by converting it into AC through the inverter. So, when night time falls and the solar modules do not generate energy, the DC stored in the battery is put into use.
However, the DC stored in the battery is not necessarily enough to support the energy demand throughout the night since during day time, it may rain or the sunlight is blocked by thick clouds, reducing the energy production. This will maximize the discharge level of the battery, causing its operational life to decrease, in other words, exhausting the battery. In this case, here is where the genset comes in. The genset produces AC and can be used immediately and at the same time the current is rectified to produce DC to recharge the battery. The mechanism can also happen during peak loads or when a prolonged period of overcast occurs

Large Battery Backup

Due to significant decreases in PV module cost and the rising cost of fuel for backup generators, many off-grid renewable energy systems are increasing in size. Advancements in power conditioning equipment, such as higher power inverter/ chargers and PV array charge controllers, and the increased availability of high-capacity batteries are also driving this trend. As remote, stand-alone systems with large PV arrays become more common, the demand for high-capacity battery banks is growing. Designing and installing a high-capacity battery bank involves more than simply adding strings of batteries to increase storage capacity. High-capacity banks require proper battery selection and a careful analysis of the available products and design trade-offs to achieve a durable, high-performance system with a long service life.