Recent pricing trends show standard industrial systems (1-2MWh) starting at $330,000 and large-scale systems (3-6MWh) from $600,000, with volume discounts available for enterprise orders. . The 54-milliwatt (MW) plant is expected to supply as many as 30,000 households and several businesses with electricity. This is particularly important in Zambia, where one-fifth of the. Advantages: High capacity and long duration capabilities, making it ideal for grid-scale applications. Are battery energy storage systems worth the cost? Battery. . That's the vision behind the Lusaka Digital Energy Storage System, Zambia's $48 million answer to energy instability. 6-kilowatt installation, the inverter cost would be approximately $1,0001. 5kWh, it offers plenty of energy storage to get you through Many people assume energy and electricity to mean the same, but electricity is just one component of total energy consumption.