LONDON, December 9, 2025 – Allye Energy, a UK clean-tech firm, has secured its largest-ever purchase order, exceeding £1 million. The major contract will see the company deploy five of its new MAX500 mobile battery energy storage systems (BESS) across the construction sector.
This deal, conducted through distributor Vital Power Group, signals a pivotal moment for the electrification of large infrastructure projects. It confirms that mobile power solutions are the immediate answer to the grid constraints that have long frustrated the shift away from diesel-powered equipment.
Solving Construction’s Charging Crisis
Construction sites face two major logistical roadblocks: securing high-power charging access and maintaining productivity. The sites often lack the necessary grid capacity, and moving heavy machinery like excavators to distant, fixed charging points is costly and time-consuming.
Allye’s MAX500 system tackles this directly. Each unit provides 500kWh of capacity and 420kW of output, effectively acting as a mobile charging station. The batteries bring the necessary power directly to the equipment, eliminating emissions from diesel generators while keeping operations running.
Alistair McNeil, Allye Energy’s COO, described the order as a “watershed moment.” He asserted that the MAX500 “solves one of construction electrification’s most challenging problems: keeping heavy equipment charged and productive across sprawling sites.“
The Game-Changer: Rapid DC Recharging
The MAX500 introduces a significant technical upgrade: integrated DC fast recharging capability. This feature is set to redefine the flexibility of mobile energy storage systems.
Instead of waiting for slow replenishment, the MAX500 can go from 20% to 80% charge in about one hour. This allows the systems to:
- Charge Each Other: For large projects, units can recharge from other battery systems in the field, creating a resilient, dynamic network.
- Rapid Refuel: They can quickly top up at public DC fast charging hubs when moving between locations.
Jonathan Carrier, Founder and CEO, confirmed that this capability will soon be rolled out across the entire MAX range. “We’ve created a dynamic energy ecosystem that adapts to the complex logistics of large construction sites,” Carrier said.
A Broader Energy Portfolio
The MAX500 launch completes Allye’s strategic product line, which now spans the full range of mobile power needs. The portfolio utilizes second-use EV battery packs, reinforcing the company’s commitment to the circular economy.
The four mobile systems now offered are:
- MAX300 (300kWh): Ultra-mobile, trailer-mounted for film production, events, and small sites.
- MAX500 (500kWh): The optimal balance of power and mobility for heavy construction.
- MAX1000 (1MWh): High-capacity storage for EV charging hubs and industrial facilities.
- MAX1500 (1.5MWh): The largest ‘drop and go’ system for data centers and industrial electrification.
The deployment of these mobile systems, which include AI-driven load management and sophisticated power control, will provide distributed, high-power charging that seamlessly moves with the construction work.
Josh Wright, CEO of Vital Power Group, confirmed his commitment to the technology: “The MAX500 systems from Allye represent an exciting step forward, offering mobile, zero-emission energy storage that helps construction sites overcome grid constraints.“
