A 50kW solar system in Australia costs $46,100 – $51,400, produces around 190 – 220 kWh per day, and typically suits commercial sites aiming to save $15,500 – $18,000 per year, depending on usage and feed-in tariffs. How much does a 50 kW solar system cost? How many panels make up a 50 kW system, and how much area do they occupy? How much roof space is required? What are the Dimensions of a 50 kW solar system? What are the 50 kW module counts by capital city? What Is The Cost Of 50kW Solar systems for. Our 50KW solar package provides steady and reliable power for every part of your business, with tier 1 solar panels in an efficient configuration and a solid 50KW solar inverter. We pride ourselves in our strong reputation as the leading provider of commercial solar in Australia. If you're. In plain terms, a 50kWh solar battery stores up to 50 kilowatt-hours of energy generated by your solar panels. It's like having a giant rechargeable power bank for your business.