As of recent data, the average cost of a BESS is approximately $400-$600 per kWh. Here's a simple breakdown: Image: Eva-Lotte Johansen. The first vanadium redox flow battery (VRFB) installation in Norway, a 5kW/25kWh system, was unveiled this week. . Why are Norwegian businesses rushing to install Battery Energy Storage Systems (BESS)? With electricity prices soaring 68% since 2020 and Nord Pool market volatility, Norway's ROI for BESS projects now outpaces Germany (18% IRR) and matches California's peak rates. Let's break down the profit. . To better understand BESS costs, it's useful to look at the cost per kilowatt-hour (kWh) stored. This Premium article, which was one of the most read Premium articles in 2025, has been made free to all to offer a glimpse of our Premium coverage. BNEF analyst. . Oslo's pilot Virtual Power Plant (VPP) achieved 92% prediction accuracy for price fluctuations, boosting storage ROI by 40%. The secret sauce? Combining Nord Pool price forecasts with real-time weather data.