Carefully consider the types of solar panels you plan on having installed. Long ago, if you didn't have enough roof space, you'd need very expensive high efficiency mono-crystalline panels. There are now more advanced polycrystalline panels and even thin film panels. If you've got enough roof space, you might wish to look at the size of the panels in relation to their output capacity to avoid having insufficient panels that you need more of later.
Do your best to reduce your energy consumption before investing in solar energy. Your solar energy system will be more affordable if you can live with a reasonable quantity of energy. Start by improving your insulation, make an effort to turn off appliances and replace old appliances with energy-efficient ones.
Check out the range at: http://supercheapauto.com.au/online-store/batteries-and-electrical/solar-power/solar-panels-and-accessories.aspx?id=40801 NZ: …
Make sure to have your solar panels professionally installed. The installation of these panels needs to be very precise, and you do not want to mess it up. Having a professional installation also provides you with a warranty, and this gives you somewhere to turn if things are not working right.
When you are figuring out the return on your solar power investment, do not forget that you can sell back energy to your utility company if you generate a surplus. This is usually in the form of a credit on your utility bills. Even though the initial investment may be hefty, the long-term financial benefits is there for the taking.