MEGATRON MV Power Block

The MEGATRON 3.125MW × 12.5MWh MV block is a fully integrated, factory pre-assembled large-scale battery energy storage system (BESS) built for utility, IPP, and grid-serving applications. Each block pairs two 6.25MWh liquid-cooled LFP battery containers with a single 3.125MW medium-voltage PCS skid — combining battery, power conversion, step-up transformer, and switchgear into one pre-tested, plug-and-play unit. This architecture compresses construction timelines, reduces on-site labor and off-loading costs, and delivers a repeatable building block for multi-MW / multi-MWh project designs.

The MV skid is a pre-assembled, factory-tested 3.5MVA-rated power block (configurable down to 2–3.15MVA) combining a bidirectional PCS (2 × 1750kVA nominal units), an oil-immersed step-up transformer (Dy11 vector, ONAN cooling), and ring main unit switchgear (SF6 or SF6-free options, 36kV rated, 630A, 20–25kA short-circuit rating) in a single 20ft enclosure.

The PCS uses three-level topology to deliver ≥98.5% conversion efficiency with <3% total harmonic distortion, operating across a wide 1050–1500V DC input range with a 690V nominal LV side. On the AC side, the skid steps output to 6.6–33kV ±5% at 50/60Hz, with full four-quadrant reactive power capability, LV/HVRT and LV/HFRT ride-through, grid-forming control, and black start support — positioning MEGATRON as a genuine grid-asset, not just a passive storage block.

MEGATRON’s core design principle is minimizing Levelized Cost of Storage (LCOS) through high energy throughput and low auxiliary consumption. The liquid-cooled battery containers hold cell temperature uniformity tight enough to sustain rated 0.25P charge/discharge across a -30°C to +55°C operating window, while the MV skid’s three-level PCS topology pushes conversion efficiency to 98.5% with under 3% THD — both factors that compound directly into higher lifetime energy delivered per dollar invested.

On the protection side, the DC bus is guarded by disconnector-plus-fuse protection inside each inverter, Type II (or I+II) surge arresters on both DC and AC sides, and DC/AC insulation monitoring devices (IMD) for ground fault detection. The transformer carries its own relay protection for pressure, temperature, and gassing, and a dry-contact smoke detector ties into the fire extinguishing system. Communication runs over CAN, RS485, RJ45, and optical fiber, supporting Modbus, IEC 60870-103, and IEC 61850 protocols — covering the interoperability requirements of most utility SCADA and substation automation environments.

Because the MV skid supports grid-forming operation with black start capability, a MEGATRON block can establish its own voltage and frequency reference in an islanded microgrid — not just follow a grid signal — while still delivering full four-quadrant reactive power support, LV/HVRT and LV/HFRT ride-through, and configurable power factor control when connected to the utility grid.

• High energy density for compact footprint and reduced land area
• Superior thermal uniformity via liquid cooling for extended cyclic lifetime
• Pre-assembled, factory-tested modular containers for simplified transport, install, and maintenance
• Multi-stage fire protection compliant with NFPA 855
• Low auxiliary power consumption and improved round-trip efficiency
• Grid-forming and grid-following operation, including black start
• Optional cloud-based EMS for real-time monitoring and dynamic charge/discharge strategy

What does one MEGATRON large-scale block include?

Two 6.25MWh liquid-cooled LFP battery containers and one 3.125MW medium-voltage PCS skid — three 20ft enclosures totaling 3.125MW / 12.5MWh, factory pre-assembled and tested as a single block.

Can MEGATRON operate off-grid?

Yes. The MV skid supports grid-forming control with black start capability, allowing the system to establish voltage and frequency reference and restore power without an external grid connection.

What MV output voltages are supported?

The integrated step-up transformer and ring main unit switchgear support 6.6–33kV ±5% output at 50/60Hz, covering most regional utility interconnection standards.

What’s the round-trip efficiency?

≥95% on the battery side (DC, 0.25P, 25°C) and ≥98.5% on the PCS side, for a combined system efficiency competitive with the best liquid-cooled utility-scale platforms on the market.