A diesel generator sized for a site's worst-case peak load usually spends most of its working life running well below that peak, and a generator running at a low load point burns fuel inefficiently while accumulating wear faster relative to the useful work it delivers. MPMC's HBD-R Series is built specifically to sit alongside an existing or new generator set and correct this mismatch, functioning as what MPMC calls a "Genset Mate" rather than a standalone battery product.
How the Genset Mate Function Actually Works
The HBD-R performs peak shaving, transient load absorption, and selective genset shutdown during low-demand periods, letting the generator run at its optimal fuel-efficiency load point — typically around 75% — while the battery compensates for load fluctuations and motor-start inrush that would otherwise force the generator to be oversized. This reduces fuel consumption by up to 75% compared with diesel-only operation according to MPMC's own product data, and extends generator overhaul intervals by up to 3× when the two are paired correctly.
MPMC HBD-R Series unit, purpose-built for hybrid rental configurations operating in parallel with diesel generator sets.
A Documented Before-and-After Result
MPMC's UK construction site case documents a 56 kW diesel generator that had been oversized for a 3–6 kW office base load; after adding a 30 kW / 60 kWh HBD-30-60 unit in hybrid configuration, refuelling frequency extended from every 2 days to every 7 days, and the maintenance interval extended from every 10 days to every 60 days.
|
Metric |
Diesel-Only |
With HBD-R Genset Mate |
|
Typical genset load point |
Oversized, running well below rated capacity |
Approximately 75% (optimal fuel efficiency) |
|
Refuel frequency (UK case) |
Every 2 days |
Every 7 days |
|
Maintenance interval (UK case) |
Every 10 days |
Every 60 days |
Native Genset Controller Compatibility
The HBD-R Series is designed from the ground up as a genset partner, compatible with major controller brands including DSE, ComAp, Woodward, DEIF, Smartgen, and CAT EMCP, and shares the same SCADA platform as MPMC's own generator sets. This native compatibility is a meaningful difference from competitors such as Himoinsa and Pramac, which rely on third-party Victron controllers and Pylontech battery packs to achieve genset integration, since a native design reduces the integration risk and commissioning complexity a buyer takes on when pairing battery storage with an existing generator inventory of mixed controller brands.
MPMC HBD-R Series battery energy storage unit running in parallel with a diesel generator set, illustrating the Genset Mate hybrid configuration.
A Larger-Scale Documented Result
MPMC's Dubai off-grid concrete batching plant deployment, built across ten stations each combining an HBD-500-1000 unit with three 500 kVA Perkins gensets under a three-phase EMS dispatch logic, documents daily fuel savings of 254.13 litres per station, an approximately 20% operating expenditure reduction, and a CAPEX payback period of two to three years on the incremental investment. This gives a buyer evaluating the same hybrid principle at a considerably larger industrial scale a fully quantified reference point rather than a percentage figure alone.
Sizing the HBD-R Unit to the Generator Being Paired
The HBD-R Series spans 30 kW to 610 kW continuous output and 61.44 kWh to 610.6 kWh capacity, giving a buyer a range wide enough to pair with anything from a small office-load generator through to a large construction or industrial genset. Sizing the battery to the actual gap between the generator's rated capacity and the site's typical load — rather than to the generator's full rating — is what determines whether the fuel-saving and maintenance-extension benefits are actually realised.
Rental-Ready Features for a Mobile Deployment
Beyond the hybrid function itself, the HBD-R Series includes forklift pockets and standard container footprints for easy logistics, plug-and-play PowerLock and CEE socket connections for rapid on-site setup, and remote monitoring via EMS over 4G or 5G — details that matter specifically for a system intended to move between sites rather than remain permanently installed alongside one generator.
Specifying a Mobile BESS-Genset Hybrid System
• Confirm the HBD-R model's output and capacity match the actual gap between your generator's rating and your typical load
• Verify controller compatibility with your existing generator brand before ordering
• Request the documented fuel-saving and maintenance-extension results from a comparable prior deployment
• Confirm whether the system will operate at a single site or needs to be redeployed between multiple sites
• Ask whether the EMS dispatch logic can be tuned to your site's specific load profile
• Confirm remote monitoring access is available to track fuel savings and system status after deployment
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MPMC Powertech Corp.
