Battery StorageFrequently Asked Questions
Are government incentives available for Battery Storage?
Battery Storage systems themselves do not qualify for government incentives although incentives are available for solar power systems.
What happens if there is a power failure?
If you have a battery storage system with EPS (Emergency Power Supply) functionality your battery will provide you with power after a few seconds. This should not be confused with UPS (Uninterruptible power supply) which is supplies power within milliseconds.
What is a standard installation
A standard installation for a solar power system is defined as:
- Single story dwelling with a tin or tile pitched roof
- No split arrays i.e. all the solar panels are installed on the same area of roof
- No cathedral or raked ceilings
- Inverter mounted inside garage or other location with 15 metres or meter box or sub-board
Glossary of terms
DEPTH OF DISCHARGE: How much energy can be taken from a battery – most lithium batteries have a depth of discharge of between 90 and 100%
EPS: Emergency power supply – most battery storage systems can supply electricity in the event of a power supply however there are limitations and it is not designed to run entire households.
GRID-CONNECTED OR GRID-TIED SYSTEM: Solar power system connected to the electric grid.
INVERTER: A unit that converts the electricity from the solar system (DC – Direct Current) to electricity that is compatible with the grid (AC – Alternating Current).
HYBRID SOLAR POWER: A solar power system that is grid-connected and has a battery
kW (KILOWATT): Unit of power equivalent to 1,000 watts.
kWh (KILOWATT HOUR): A Unit of energy equal to that produced or consumed by one kilowatt in one hour.
MONOCRYSTALLINE SILICON: Processed silicon where all the material consists of only one crystal.
MULTICRYSTALLINE SILICON: Processed silicon where the material consists of several small (typically 1–20 mm diameter) crystal grains. Sometimes also called Polycrsystalline.
mW (MEGAWATT): Unit of power equivalent to 1,000 kW.
OFF-GRID SYSTEM: Solar power system not connected to the electric grid. Normally used in areas where grid-connected electricity is unavailable or available only at a high cost.
PHOTOVOLTAICS (photo=light, voltaic=electricity): Solar cells are made of silicon. When a photon (particle of sunlight) strikes a molecule within the solar cell, an electron is knocked free. An electrical field causes this free electron to move to one side of the cell. The accumulated effect of millions of this interaction generates electricity
SOLAR CELL: Semiconductor device that creates electricity when exposed to sunlight. Normally made from silicon wafers.
SOLAR MODULE (SOLAR PANEL): Interconnected solar cells encapsulated and protected behind transparent materials that protect against humidity, air and mechanical damage. Normally solar modules are made with a glass front, a polymer back sheet and aluminium frame. The photovoltaic module, more commonly known as the solar panel or solar module, is then used as a component in a larger photovoltaic system to offer electricity for commercial and residential applications.
UPS: Uninterruptible power supply – battery storage systems are not UPS and can take up to 30 seconds to supply power in the event of a power failure.
Wp (WATT PEAK): Power from solar cells is normally measured in watts when the solar cell is exposed to a standard sunlight irradiation (1,000 W/sqm).