Solar panels (or photovoltaic modules) are installed on the roof of your premises either flush to the roof or using tilt frames. During daylight the solar panels turn sunlight into electricity (DC energy). This electricity is then fed to the inverter(s).
An inverter is an electrical device that changes the DC energy generated from the solar panels into 240v AC power. This is the same form of electricity that all standard Australian equipment uses. There is no difference in the type of electricity generated by solar to electricity drawn from the grid.
The solar power system uses some of your existing electrical infrastructure. The power from the inverter is then sent directly to your switchboard (or distribution board) that distributes the power to the equipment in your premises that are drawing electricity at that time.
Your electricity meter records your energy usage. Solar power will power your equipment first before any grid electricity is used. The way your organisation will save money with solar is by reducing the amount of electricity drawn from the grid, meaning you will have lets electricity usage on your bill, thus reducing you bills.
If your equipment requires additional electricity to what your commercial solar system is generating, this will be drawn from the grid on top of the solar. Depending on your location and electricity distributor, any excess electricity generated above your usage (e.g. weekends) may be exported to the grid.