Frequently Asked Questions.

  • Australia offers a range of incentives—including Small-scale Technology Certificates (STCs) that reduce solar installation costs by about 25–30%, and the new Cheaper Home Batteries Program, starting July 1, 2025, providing at least a 30% federal rebate on battery installation costs (up to 50 kWh). Combined with state-level subsidies, this can dramatically shorten your payback period and reduce upfront costs.

  • With the new federal rebate and falling technology prices, payback periods can fall to 3–5 years for many households. Average savings per year range between $1,000 to $2,300, depending on usage patterns and installation size.

  • 1.0 KW system needs approximately 10m2, a 1.5KW system needs approximately 15m2 and so forth.

  • The system weighs approximately 27 kilograms per square meter so not an issue for
    Residential or Commercial properties.

  • If you have high evening electricity use, frequent blackouts, or want to maximize energy independence, then yes—solar batteries are becoming a smart investment. They let you store excess solar energy, reducing grid reliance and offsetting rising energy costs.

  • A solar panel installation is considered a safe and steady investment. If necessary, you can finance your purchase through, operating leases, bank loan, home improvement loan or mortgage refinancing. It is best not to get your finance through a solar company, we sell solar not finance.

  • Yes, Additional solar panels can be added at any time to increase generating capability but you might have to upgrade to a larger inverter. Alternatively, you could purchase a larger inverter when installing the system initially and then plan to add some extra solar panels later.

  • The appropriate sizing of a solar power system to supply a properties electricity needs is one of
    the most common questions people considering solar panels ask. OTI Power offers a number of
    tools and ways to help you determine a return on investment, panel placement, location of
    inverter and best sized system for your property and circumstances.

  • Yes—but not all systems offer this. To ensure continuity during outages, look for systems with true blackout protection and off-grid or whole-home backup capability.

  • Modern solar batteries typically last between 10 to 15 years, backed by warranties to match. Some high-quality systems now offer warranties even beyond 10 years.

  • Small-scale Technology Certificates. These certificates are a tradeable item and are created when you install a PV Solar system under 100kw. STC’s fluctuate but are currently worth approx. $36 per STC, providing a rebate of approximately $3,600 on a 6.5kW system. Our Solar proposals will show the rebate amount applicable to your area and size system quoted.

  • Batteries installed with your solar system allows for households to store any unused energy to use at a later time, or to sell the energy back to the electrical grid. Other benefits include:

    Reduce or eliminate the need to use the grid during peak times when electricity is charged out at higher rates. In other words, offset consumer feed-in tariffs.

    The ability to deliver continued supply if the household is relying on an unreliable grid supply.

  • The use of batteries in conjunction with your solar system is safe when the batteries are correctly installed, correctly used and well looked after, There are potential risks that may rise if the above is not adhered to, which are in line with risks from many other electrical hazards that are present in any household.