The 140 kWh battery cabinet is a high-voltage system. If you want a rack-mounted system, we also support that. Price: Click The Button Below To Get A Discount. Save on your energy bills with batteries! SolarEdge SE5000A-US non Battery (top Cabinet Only. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Shop high-quality battery cabinet for solar system from reliable suppliers. Durable, efficient, and secure storage solutions for your solar power needs. Average Customer Review:5 of 5 Total Reviews: 1 Write a review. 2" knock outs on top and sides. See if you qualify at checkout. HomeGrid Energy. As of most recent estimates, the cost of a BESS by MW is between $200,000 and $420,000, varying by location, system size, and market conditions. This translates to around $150 - $420 per kWh, though in some markets, prices have dropped as low as $120 - $140 per kWh. Key Factors Influencing BESS.