5 kw of Amorpous panels (45 panels x 110watts) with Xantrex GT5 Inverter. Price is installed on an iron roof that is single story and is within 100 km of an Australian Capital city(mainland). If you have a tiled roof there is a bracket kit required that cost $200. If the house/factory is higher than single story or you are further that 100 km please email us and we will give you a cost on the extra. Please give postcode detail in email and site address.