The challenge: unstable grids and extreme load peaks
Megawatt-scale energy storage
The growing feed-in of renewable energy causes fluctuations in the grid. At the same time, new high-power consumers such as high-power-charging (HPC) infrastructure for electric trucks and buses create extreme load peaks that overwhelm local grids. Expensive, slow grid expansion is often not an economical option.
The solution
PotisBank: the answer for grid stability and power peaks
Grid-scale storage from PotisBank answers these challenges. The systems act as huge power buffers that stabilise the grid and deliver energy on demand. For charging infrastructure that means: the storage charges continuously from the available grid capacity and releases the energy in bundles of up to several megawatts to the charging stations — ultra-fast charging, efficient, scalable and without overloading the grid connection.
Our PotisBank models at a glance
PotisBank-L3.7
The flexible powerhouse — 3.7 MWh, DC-coupled.
PotisBank-L5.0-AC
The integrated AC solution — 5.0 MWh, 2.58 MW.
PotisBank-L6.25-AC
Maximum energy density — 6.25 MWh per container.
PotisBank-L3.7 — the flexible powerhouse
- Nominal capacity: 3.7 MWh
- Nominal voltage: 1331.2 V
- Cooling: liquid cooling
- Efficiency (round trip): max. 94 %
- Dimensions: standard 20-ft container (6058 × 2438 × 2896 mm)
- Special feature: DC-coupled system for maximum flexibility in the choice of power electronics (PCS).
PotisBank-L5.0-AC — the integrated AC solution
- Nominal capacity: 5015 kWh (5.0 MWh)
- Nominal output power: 2.58 MW (215 kW × 12)
- Cooling: intelligent liquid cooling
- Efficiency (round trip): ≥ 93 %
- Dimensions: standard 20-ft container (6058 × 2438 × 2896 mm)
- Special feature: fully integrated AC system that cuts installation effort by up to 40 %.
PotisBank-L6.25-AC — maximum energy density
- Nominal capacity: 6251 kWh (6.25 MWh)
- Nominal output power: up to 3.44 MW (430 kW × 8)
- Cooling: intelligent liquid cooling (pack & PCS)
- Energy density: 6.25 MWh per container sets new standards.
- Dimensions: standard 20-ft container (6058 × 2438 × 2896 mm)
- Special feature: ideal for applications with the highest energy demand in limited space, at reduced LCOE.
More grid-scale systems
HyperStrong HyperBlock III
5 MWh of power on just 20 feet — market-leading energy density.
Elecnova ECO containers
Tailor-made flexibility — air-cooled or liquid-cooled.
HyperStrong HyperBlock III: 5 MWh of power on just 20 feet
When space is money and efficiency decides, the HyperBlock III is the answer. With this liquid-cooled system, HyperStrong sets new standards in the utility-scale segment. A highly integrated design achieves an impressive capacity of 5 MWh in a standard 20-ft container — massively reducing the footprint while cutting balance-of-plant (BOP) costs and maintenance effort. Ideal for solar parks and grid-serving large-scale storage projects where every square metre counts.
- Extreme density: 5 MWh capacity per container — market-leading energy density.
- Intelligent liquid cooling: homogeneous temperature distribution for maximum cycle life.
- Cost efficiency: significant LCOS reduction through lower space and installation requirements.
- AC/DC flexibility: available as a pure DC block or as an AC-coupled system.
Elecnova ECO containers: tailor-made flexibility for industry
Not every project needs liquid cooling. For applications where robustness and simple maintenance come first, the Elecnova ECO series offers the full choice. We supply both classic air-cooled containers (ECO-B20FT3404WS) and modern liquid-cooled variants (ECO-B20FT5015LP). This flexibility lets us match the climatic conditions and load profile of your site exactly — whether in a harsh industrial environment or at the edge of a wind farm.
- Choice of technology: decide between air cooling (low complexity) and liquid cooling (high density).
- Scalability: modular 20-ft container solutions for easy expansion into the GWh range.
- Everything on board: integrated PCS, fire-suppression system and air conditioning for plug-and-play installation.
- Robust construction: built for demanding outdoor use.
Learn more about our industrial and grid-scale storage systems on our Speichercampus.
From grid stabilisation to charging parks
Whether for grid stabilisation, a peak-shaving use case or building high-power charging infrastructure — we plan and deliver the right storage solution for your project. Contact us for a no-obligation initial consultation.