PROJECT SUMMARY
Location: Virginia, Free State, South Africa
Installed equipment:
4 x HRYW1275, Yanmar engine
4x HRMW1270, MTU engine
1 x HRFW200, Iveco engine
2 x 33,000ltrs Fuel Tank
2 x TRANSFORMERS 400V/11kv 11kV
Neutral Earth Transformer
Control Room
LV & HV cabling
Onsite HIMOINSA O&M Technical Team
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Situation and Objective
Renergen’s wholly owned subsidiary, Tetra4, is the holder of South Africa’s first onshore petroleum production right. Tetra4’s Virginia Gas Project is situated in the Free State of South Africa.
The project will produce LNG (liquified natural gas) and liquid helium. The Plant is Sub Saharan Africa’s first helium facility, making South Africa one of only 8 countries globally to produce and export liquid helium and South Africa’s first onshore LNG operation.
Helium is required worldwide to manufacture semi-conductors, fibre optic cabling and provides deep cryogenic cooling for the superconducting magnets that are critical components in magnetic resonance imaging (MRI) devices.
It is also serves as the only propellant for rocket fuel which enables space travel.
There is a global shortage and demand internationally is high.
LNG is produced by purifying natural gas and cooling it down to – 162°C until it liquefies. LNG is a versatile liquid fuel and can be used in the following applications while providing CO2 emission reductions when compared to traditional fossil fuels to aid decarbonisation strategies:
A natural gas liquefaction plant requires an immense amount of power to run. Extraction, cooling and liquifying on site is an energy-intensive process. During the construction process, no electrical connection was available, necessitating Renergen to proceed with a self-build electrical connection to the Eskom grid infrastructure and, in the interim, ensure they had a temporary, prime power solution to ensure timely commissioning of the Phase 1 Virginia gas Project.
Solution
HIMOINSA Southern Africa won the tender for an eight month 8MW rental contract. They successfully provided, in rapid timelines, a competitive, flexible, turnkey power solution.
Local utility Eskom would not be able to provide the dedicated power supply required to the site for a minimum eight months. The HIMOINSA team installed and commissioned a fully functioning power plant within three weeks of the site being ready. Due to maintaining a well-stocked fleet of rental units locally, HIMOINSA Southern Africa were able to offer flexibility with contract timelines.
The units were installed and provisioned on site early to ensure there were no production delays due to lack of power. Extensions to the original contract term were also accommodated when utility power was delayed ensuring there was no disruption to the commissioning timelines Renergen had committed to their customers.
Eight, fully synchronised generator sets, neutral earth transformers, fuel tanks and a control room, were installed to run the site at 8MW Prime capability, compliant with all health and safety requirements. A 200kVA unit was also provided for temporary use during the construction phase.
As the massive compressors used for the manufacturing process have large step-loads, it was vital to ensure these did not cause power tripping which would interrupt production capability. The 8MW, 11kv voltage solution ensured sufficient power redundancy.
HIMOINSA provided a fully bespoke service, fuel tanks and fuel piping in the construction phase to 24/7 data monitoring during production, as per the HIMOINSA preventive maintenance protocol.
In strict adherence to health & safety protocols, three HIMOINSA technicians lived on site operating on 8hr rotational shifts.
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To best meet Renergen’s operational and fiscal requirements HIMOINSA Southern Africa devised a two tier bespoke tariff.
This meant that Renergen were able to have generators on site and commissioned in advance of the plant becoming operational, at a low fixed monthly charge. However, Renergen were not forced to pay a fixed electricity charge during this time but had the benefit to pay only for energy that they required and was generated.
The biggest cost of the early energy solution for Renergen was the diesel consumption used during power generation. HIMOINSA generators with Yanmar and MTU Engines have best in class fuel efficiency rating, a claim HIMOINSA Southern Africa were happy to back-up with financial performance liabilities if they did not successfully achieve the fuel efficiency rates committed to.
By incorporating penalties if fuel efficiency levels were not met, paying only for energy that was needed and fixing the capacity charge provided Renergen with the comfort that the plant could be run at a pre-determined cost.
The plant ran efficiently on a fully turnkey solution, including the necessary manpower and operational planning requirements for the contract term, and beyond, until the utility connection was successfully installed, and the temporary power plant decommissioned.
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Nick Mitchell I Chief Operating Officer I Renergen
Matthew Bell I Director of Business Development - HIMOINSA Southern Africa


Stefano Marani I CEO & Managing Director I Renergen
Watch HIMOINSA and Renergen Directors discuss the 8 MW rental power solution for Renergen’s LNG and helium plant in South Africa