Large Commercial & Industrial Utility Scale Batteries

Immersa partners with developers, EPC firms and landowners to deliver 500kW to multi-megawatt battery systems. From grid applications to engineering and long-term optimisation, we provide the expertise needed to build large-scale storage projects with confidence.

Large-scale energy storage is vital as the UK transitions to a low-carbon future. We use advanced modelling and system simulation to design solutions that can harness high-generation periods, store energy when demand is low and supply it back when needed.

Our Utility-Scale Products

Select a product to explore its features and technical specifications.

Aster 500

500 kW

Product Advantages

Entry Point for Utility

Ideal starting point for utility-scale storage projects

Compact Footprint

High power density in a space-efficient design

Rapid Deployment

Pre-engineered for quick installation and commissioning

Grid Compliant

Meets G99/G100 requirements for UK grid connection

Scalable Architecture

Designed for future expansion up to 6 units in parallel

Liquid Cooled

Advanced thermal management for all climate conditions

Aster 500 product image

Technical Specifications

Energy Capacity1,175.5 – 1,410.7 kWh
PCS Output500 kW
Rated Voltage748.8 VDC
Cluster Configuration6 × 235kWh Racks Max (1,410.7 kWh)
Parallel Capability6 maximum
Dimensions (W×D×H)6058 × 2438 × 2896 mm
Weight23 t
Cooling MethodLiquid Cooled
IP RatingIP54
Fire ProtectionAerosol + Detection

What Utility Storage Enables

Stores energy when generation is high and demand is low

Supports grid stability, frequency response and balancing services

Creates long-term revenue through energy trading and grid contracts

Maximises the value of solar, wind or other renewable assets

How We Support Utility Partners

Your projects benefit from consistent, experienced technical support throughout the entire lifecycle.

  • Grid connection applications and feasibility studies
  • Financial & performance modelling
  • System design, engineering and procurement
  • Delivery, installation oversight and commissioning
  • Monitoring, maintenance and asset management

Discuss utility-scale projects

Get expert guidance on large-scale battery storage solutions