Open-pit and underground mines both depend on reliable generator sets, and each asks something different of them. An open-pit operation spreads its loads across a wide, dusty, sun-exposed site whose work fronts move every few months. An underground mine concentrates its critical loads, such as ventilation fans, hoists and dewatering pumps, and distributes power from surface plant to the working levels through long cable runs. MPMC POWERTECH CORP. (MPMC), a Shanghai-headquartered manufacturer founded in 2008, has supplied generator sets, battery storage and hybrid power stations to mining projects in Australia, the Philippines, Indonesia, Peru, Côte d'Ivoire and Chile, and its Haimen factory specialises in mining-specific generator sets. This guide sets out how to choose generator sets for each environment.

Start With the Mine's Power Profile

Open-Pit Mines: Distributed and On the Move

An open-pit site combines crushers, conveyors, pumps, workshops, offices, camps and night lighting across a large area. Loads appear and relocate as the pit develops, so containerised generator sets that can be lifted, shipped and repositioned suit the way the mine grows. Heat, dust and altitude are part of everyday operation and need to be designed in from the start.

Underground Mines: Concentrated and Continuous

Underground operations run ventilation, hoisting and dewatering around the clock, so supply continuity sits at the centre of the design. These loads include large motors with high starting currents, and the distance from surface plant to the working levels makes distribution voltage an early decision.

Choosing Generator Sets for Open-Pit Operations

Containerised Units Built for Heat and Dust

MPMC's containerised generator sets are rated for up to 50°C ambient with copper radiator options, and altitude derating is calculated for each engine model. Enclosures resist heat, corrosion and water, with C3, C4 or C5 coating, and sprayed products undergo 500 to 700 hours of salt spray testing twice a year. Every chassis passes NDT magnetic particle inspection, and every set is load-tested from 0% to 110% before shipment.

Right-Sizing With Mobile Battery Storage

Pairing generator sets with HBD-R mobile battery storage, from 30 kW / 61.44 kWh to 610 kW / 610.6 kWh per unit, lets the engines run at an efficient load point of around 75% while the battery handles fluctuations and the inrush of motor starts. This removes the need to oversize generator sets, keeps engines above the 30% minimum load factor for long-term operation, and is associated with fuel savings of up to 75% in MPMC product data. In a UK case, adding storage stretched refuelling from every 2 days to every 7 days and maintenance from every 10 days to every 60 days.

Lighting the Pit at Night

The HBL-600D-M hybrid lighting tower pairs a 6 kW Kubota Z482-3B diesel generator set with an 8 kWh LiFePO4 battery and four 150 W LEDs at 200 lm/W, lighting 18,200 m² from a 9 m hydraulic mast with 355° rotation. It runs up to 53 hours on battery alone, and its 130 L tank supports up to 420 hours of autonomy. Dual-mode colour temperature switching, adaptive brightness control and a light-controlled timer match the light to each shift.

MPMC HBL Series hybrid lighting towers working on a mine site.

Choosing Generator Sets for Underground Operations

Continuous Ratings and N+X Redundancy

Ventilation and dewatering call for generator sets specified on continuous ratings and designed to ISO 8528 for round-the-clock duty. Multiple units in parallel, synchronised by DSE or DEIF controllers, provide N+X redundancy and master-standby rotation, so each set can be serviced in turn while the others carry the load. Independent black-start capability allows the station to restart without an external grid.

High-Voltage Output for Long Cable Runs

Generating at high voltage reduces transmission losses over long cable runs. The Cummins-powered MCLS2000H(S)-1 delivers 2,000 kVA prime at 11,000 V and 50 Hz using a QSK50-G17 engine and a Leroy-Somer LSA 53.2 VL7 alternator, and MPMC has also built high-voltage containerised units of 2,250 kVA with Perkins 4016-61TRG3 engines for an island-mode oilfield power system in the Middle East.

Motor Starts and Safety Engineering

MPMC's engineers review starting currents and step loads during design, so each selected set accepts its load blocks smoothly, and battery storage can absorb the largest motor-start peaks. High-voltage systems can be specified with SF6 gas-insulated vacuum circuit breakers, neutral grounding resistors, multi-sensor fire detection and automatic CO2 fire suppression, features proven in MPMC's oilfield island-mode power systems.

MPMC large containerised diesel generator set, the platform used for continuous-duty mine power.

Table 1. Generator set selection by mine type

Power for Camps, Offices and Electric Machinery

Camps, offices and monitoring points across both mine types suit MPMC's GSB hybrid power stations, which combine a 2,375 W slide-out solar array, LFP storage from 20.4 kWh to 112.5 kWh and a generator set in one mobile unit from 10 kVA to 120 kVA. On Australian mining sites, 245 GSB units form a 14.7 MW integrated power project supplying lighting, containerised offices and water pumps.

As mines introduce electric machinery, BCH mobile BESS chargers provide on-site DC fast charging. The BCH-600-400 delivers 400 kW from 407 kWh for heavy machinery and mining support, the BCH-800-600 offers 1C performance for high-intensity duty, and their fully sealed liquid-cooled battery packs keep dust out. Combined with MPMC's 400 kVA methanol power station, they form an integrated off-grid green power system for electric equipment.

Table 2. MPMC mining power references

Why Mining Buyers Choose MPMC

MPMC has been the largest G-OEM in China by volume for Perkins and Stamford in recent years, and its containerised platform lets each mine choose engines from Cummins, Perkins, MTU, Baudouin, Scania and other partners, supported through their global service networks. Hybrid systems are supervised through MPMC's self-developed SCADA, with remote monitoring, ten years of data retention and Starlink satellite backup for remote sites, and every project includes design consultation, customisation, factory testing, logistics and commissioning support.

Choosing Mining Generator Sets With MPMC

• Identify whether loads are open-pit, underground or both

• List motor starts for crushers, fans, hoists and pumps

• Define continuous, prime or standby duty for each load group

• Set redundancy for ventilation and dewatering supply

• Confirm altitude, ambient temperature and dust conditions

• Choose the distribution voltage for long cable runs

• Plan HBD-R storage, lighting and camp power alongside generation

• Contact MPMC at sales@mpmc-china.com or WhatsApp +86 150 0085 4420 for a mining power proposal

Frequently Asked Questions