Energy Density : The Space-Saving Secret of Energy Storage

Energy density (measured in kWh/m³) determines how much electricity you can store in a given space. Imagine it as "how much energy you can pack into a given space, just like how many books you can fit on a shelf." In energy storage systems:

• Higher kWh/m³ = More power and energy in smaller containers
• 1% density gain = 1% less land/space required
• Critical for urban substations, park lots, factory, commercial buildings and other space-constrained deployments

The Density Race (Data from certified industry reports)

Risen Storage eFlex 836kWh Liquid-Cooling ESS：

98.4 kWh/m³, which is 29% higher than the industry average (~76.6 kWh/m³).

✓ High energy density enhances efficiency and system longevity (Assumption: With more energy stored in less space, high-energy density systems reduce the auxiliary consumption on temperature control, less cost on maintenance, and higher system efficiency. This leads to a longer lifespan, lower total cost of ownership, and better long-term performance.)

✓ Resource efficiency and reduced environmental impact (Assumption: By requiring fewer materials and occupying less space, high energy density systems use fewer resources in manufacturing and transportation, resulting in a smaller carbon footprint and a more sustainable energy storage solution.)

✓ Improved safety and heat management (Assumption: With better thermal management, less radiation, and less cooling requirement, which improves system safety by reducing overheating risks and enhances performance under high-demand conditions.)

Why Density Drives Value?

• 29% space saving vs industry average (Assumption: Higher energy density systems require less space compared to the industry average, reducing land usage and installation costs.)
• 42% less concrete pad than low-density systems (Higher energy density systems typically have a smaller footprint, reducing the area required for the concrete foundation and minimizing costs.)
• 3x faster deployment in tight urban sites (Assumption: Smaller, high-energy-density systems are easier to transport and install in urban areas with space constraints, leading to faster deployment times. Based on the fact that high-density systems have 60% of the footprint of low-density systems, we estimate a 3x faster deployment rate.)

High energy density is a step towards more efficient and sustainable energy storage. With solutions like eFlex , we're optimizing space while meeting the growing energy demands.