Services
MEC DIESEL GENERATING STATIONS
The Marshalls Energy Company (MEC) is the major provider of electrical energy in the Marshall Islands and operates a number of independent electricity supply systems throughout the country, of which the largest system is supplying Majuro. The Majuro system has a (2023) recorded maximum demand of around 9.8 Megawatts, with a daily average of 9.0 Megawatts. Continued demand growth has slowed in recent years due to tariff increases brought about by fluctuations in the world price for oil, but it is looking to continue to grow to a potential of 14.0MW over the next 3-4 years due to planned developments in the commercial sector.
The Marshalls Energy Company operates smaller diesel power stations outside of Majuro, with the largest of these situated on Ebeye Island, in Kwajalein Atoll, which has a present demand of 2.4 Megawatts. Other diesel power stations are situated on Jaluit Atoll, Wotje Atoll and Rongrong Island, with current demands of 100 kilowatt, 90 kilowatt and 15 kilowatt respectively.
The Marshalls Energy Company installed 3045 solar home systems (SHS) to families residing amongst the remaining atolls. Each SHS system has a capacity of 200W and were provided by multiple international donors. Additional larger systems ranging in size from 6kW up to 16kW were installed at various school facilities on some atolls.
Apart from generating electricity from diesel and solar installations, MEC is also the distributor of LPG gas throughout the Marshall Islands with a 33,000 pound bulk storage capacity, which is decantered into smaller bottles. The Company also operates the largest fuel farm facility comprising 6 million US gallons of diesel fuel, supplying the Company’s diesel power stations as well as sales to International vessels and other commercial enterprises such as fishing companies as well as the domestic shipping and transport markets.
The following sections provide a brief description of MEC’s operating facilities.
MAJURO DIESEL POWER STATION 1
The Majuro diesel power station 1 was commissioned in 1984. It is the smaller of MEC’s two power stations servicing Majuro.
A total of five diesel generators are installed in the station, comprising of four original Peilstik generators and in 1992 a single Caterpillar generator was added.
Technical Data:
- Generator Manufacture: Peilstik 10PC.2V MK2
- Number of Generators: 4 units, designated #1, #2, #3 and #4 (#3 and #4 are no longer in service)
- Original Rated Power Output: 3.25 Megawatt @ 450 RPM
- Present Rated Power Output: 1.0-1.5MW each
- Cooling System Type: Seawater cooling
- Generator Manufacture: Caterpillar 3616
- Number of Generators: 1 unit, designated #5
- Original Rated Power Output: 3.3 Megawatt @ 720 RPM
- Present Rated Power Output:
- Cooling System Type: Radiator cooling
- Day fuel storage capacity is 20,000USG
MAJURO DIESEL POWER STATION 2
The Majuro diesel power station 2 was commissioned in 1999 and is the largest of all of MEC’s power stations. The station has two Deutz diesel generators installed with the station having provision for a third generator.
Technical Data:
- Generator Manufacture: Deutz BV16M640
- Number of Generators: 2 units, designated #6 and #7
- Cooling System Type: Radiator cooling
- Original Rated Power Output: 6.4 Megawatt @ 600 RPM
- Present Rated Power Output: 5.3 MW (#6); 3.5 MW (#7)
- Distribution Voltage is 13.8kV with 4.16kV at the radial ends.
- Day fuel storage capacity is 20,000USG
EBEYE DIESEL POWER STATION
The Ebeye diesel power station located in Kwajalein Atoll was commissioned in 1984 and provides electricity for Ebeye Island.
The station, in its current configuration, has a total of four diesel generators installed, comprising four Cummins generators.
Technical Data:
- Generator Manufacture: Cummins KTA50-G9
- Number of Generators: 4 units, designated #1, #2, #3 and #4
- Original Rated Power Output: 1.2 Megawatt @ 1,800 RPM
- Distribution Voltage is 13.8kV
- Fuel Storage Capacity: 300,000 US Gallons
RONGRONG DIESEL POWER STATION
The Rongrong diesel power station located on Rongrong Island, within Majuro Atoll, was commissioned in January 2003. The station currently supplies a boarding school and six houses on the island. The station originally had two containerized Caterpillar Olympian diesel generators installed.
Technical Data:
- Generator Manufacture: Single 20kW Perkins Diesel generator.
- Number of Generators: Output: 1 units, designated #1
- Nameplate Rated Power 20 kilowatt @ 1,800 RPM
- Distribution System: Underground cable
- Distribution Voltage: 208 Volt, 3-phase
- Fuel Storage Capacity: 500 US Gallons
WOTJE DIESEL POWER STATION
The Wotje diesel power station located on Wotje Atoll was commissioned in September 2003 to provide electricity supplies to the atoll. The station has two Wärtsilä UD25 diesel generators installed with the provision for a third generator in the station.
Technical Data:
- Generator Manufacture: Wärtsilä UD25L6S5D
- Number of Generators: 2 units, designated #1, and #2
- Original Rated Power Output: 275 kilowatt @ 1,200 RPM
- Present Rated Power Output: 275 kW
- Distribution System: 5 miles of underground cables
- Distribution Voltage: 4,160 Volt
- Fuel Storage Capacity: 20,000 US Gallons
- Number of Customers: around 124
JALUIT DIESEL POWER STATION
The Jaluit diesel power station located on Jaluit Atoll was commissioned in December 1991. Apart from providing electricity services to the local community, the Company also operates a small hotel on the island. The station has two Wärtsilä diesel generators installed with the provision for a third generator.
Technical Data:
- Generator Manufacture: Wärtsilä UD25L6S5D
- Number of Generators: 2 units, designated #1, and #2
- Original Rated Power Output: 275 kilowatt @ 1,200 RPM
- Present Rated Power Output: 275kW
- Distribution Network: 2 miles of overhead line
- Distribution Voltage: 4,160 Volts
- Fuel Storage Capacity: 20,000 US Gallons
- Number of Customers: around 100
