Based on this data we can see the average cost of a 50kW system as of August 2024 is $50,480 including the STC rebate and GST. How much does a 50kw Solar System cost? On average, a 50kW solar system will cost around $49,068, including government rebates and other. As of 2025, prices for a 50kWh solar battery in Australia start from around A$9,999, depending on the brand, battery chemistry (like LFP or NMC), and whether it's a modular or all-in-one unit. Why. A standard 20ft container with 50kW solar + 120kWh storage now averages AUD $85,000–$110,000 wholesale. But wait—why does pricing swing 30%? Case in point: Perth-based miner Roy Hill slashed energy costs by 64% using 8 mobile solar containers from China's Trina Solar. Their bulk purchase price? AUD. Price quote for a 50kW mobile energy storage container in Australia Housed in durable shipping containers, our systems are engineered to meet the growing demand for renewable integration, backup power, and off-grid energy supply.