While current benchmarks hover between $280-$400/kWh, smart procurement strategies and partner selection can unlock significant savings. EPC (Engineering, Procurement, and Construction) costs for energy storage projects vary Explore the critical elements influencing EPC costs for energy storage projects and discover actionable strategies to optimize budgets while ensuring quality. What Determines EPC Costs for Energy Storage. DOE's Energy Storage Grand Challenge supports detailed cost and performance analysis for a variety of energy storage technologies to accelerate their development and deployment The U. All-in BESS projects now cost just $125/kWh as. y hovered around 0. According to our data, the average winning price for a 2-hour ESS is approximately 0. South Africa"s Hybrid Power Projects and 1. Pro Tip: Always request itemized quotes –. This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www. Ramasamy, Vignesh, Jarett Zuboy, Michael Woodhouse, Eric O'Shaughnessy, David Feldman, Jal Desai, Andy Walker, Robert Margolis, and Paul Basore.