The systems deliver up to 1.5 MWh of dispatchable energy and instantaneous grid support, offering ultra-fast frequency response and synthetic inertia to stabilise networks and prevent cascading failures.
As electricity grids across Europe face growing instability, highlighted by the recent Iberian Peninsula blackout and substation fires in London, Heathrow and Exeter, the need for flexible, fast-responding energy solutions has never been more critical.
“With Europe's electricity grids under increasing strain as seen in the recent Iberian Peninsula blackout and substation fires in London, Heathrow, and Exeter, the demand for agile, high-capacity energy storage systems that can instantly stabilise the grid has become absolutely essential” said Jonathan Carrier, Founder and CEO of Allye Energy. “The MegaMAX range represents the next evolution in our mission to create flexible energy banking solutions that make clean energy more accessible, affordable, and critically, more resilient. We've taken the commercial success and engineering excellence of our MAX300 platform and scaled it to meet much larger power demands. These systems aren't just batteries - they're intelligent energy management hubs that can transform how businesses approach electrification while simultaneously providing vital grid stabilisation services.”
The systems maintain the same physical footprint while offering flexible capacity options. The MAX1000 provides 1MWh storage with up to 840kW of power, while the higher-capacity MAX1500 delivers up to 1.5 MWh and up to 1.25 MW of power, making it suitable for demanding applications.
Each MegaMAX integrates three Allye MAX300 structures into an integrated, functional system with inherent redundancy, featuring a fully liquid-cooled thermal management system to improve round-trip efficiency, extends battery lifetime, and enhances performance.
The units integrate advanced AI-driven control systems that enable real-time decision-making and ultra-responsive frequency regulation. By acting as grid shock absorbers, they can instantaneously inject or absorb energy to maintain the 50Hz frequency balance that is fundamental to grid stability. This is a necessity as fossil-fuel baseload generation retires and intermittent renewables take their place.
Each MegaMAX unit is a self-contained, modular “drop and go” solution that can be deployed in under two minutes, circumventing the multi-year, multi-million-pound delays often associated with grid upgrades.
The units function equally well in stationary grid-tied and off-grid applications:
On-grid (stationary) installations: Function as battery buffer systems for EV charging where the grid is constrained, integrate with local solar generation, provide peak shaving, and perform smart electricity price arbitrage to lower operating costs. Crucially, they can also deliver essential grid stability services, rapidly responding to frequency fluctuations within milliseconds
Off-grid (mobile) applications: Replace diesel generators with zero-emission power for construction sites, events, and remote operations
MegaMAX combines up to 18 repurposed EV battery packs with mixed chemistries (LFP and NMC), significantly reducing its environmental footprint while enhancing energy diversity and reliability. This hybrid approach also cuts embedded carbon by over 40 percent per unit, saving up to 100 tonnes of CO₂e.
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