The 90 MW Thermal Power Plant (TPP) owned by Rabai Power Limited constitutes a significant investment in the future prosperity of Kenya. With a capacity to provide power for 400,000 Kenyan Consumers, the Plant remains a key strategic Infrastructure investment into the Kenyan Electrical Generation system. The prime movers of the Power Plant are five 17 MW W18V46 4-stroke medium speed diesel engines in a combined cycle set-up, whereby the heat retained within the exhaust gasses are reused to produce steam in a Waste Heat Recovery Plant. Through a Steam Turbine (STG) “free” energy to 18,000 Kenyan consumers are produced, leaving Rabai Power as the most efficient TPP in Kenya.
Rabai Power Plant has a total capacity of approximately 90 MW, the major equipment comprising:
- 5 x Wärtsilä 18V46C reciprocating diesel engines: 17.4 MW, 500 rpm
- 5 x ABB AMG 1600 air-cooled generators: 21.3 MVA, 11 kV
- 5 x Aalborg (Alfa Laval) Waste Heat Recovery Steam Boilers: 11.8 kg/s, 13.5 bar, 365ºC
- 1 x Dresser Rand (Peter Brotherhood) Condensing Steam Turbine: 7.85 MW
- 1 x Bronswerk Air Cooled Condenser:
- 2 x Areva Step-Up Transformers: 75 MVA, 132/11 kV
- 3 x 4,500 M3 HFO Storage Tanks
BRIEF HISTORICAL BACKGROUND
Burmeister & Wain Scandinavian Contractor A/S, Denmark, and Aldwych International Ltd., United Kingdom, won the electricity supply tender in early 2006. Originally the power plant should have been situated in the Nairobi area but the construction site was moved to Mombasa.