POWER STATION 5 BLOCK 4
Enhancing Efficiency and Sustainability
Project Overview
Power Station 5 Block 4, featuring a 680.9 MW generating capacity at 25°C and 54.6% efficiency, was successfully commissioned and formally handed over to Alba on December 22, 2024. This advanced block comprises a Mitsubishi M701JAC gas turbine, a Hitachi steam turbine, an SPX-Air Cooled Condenser, and a XIZI HRSG, along with supporting infrastructure.
Technology
The M701JAC gas turbine represents cutting-edge technology, delivering high temperature, high efficiency, and low NOx emissions.
Capacity & Efficiency Gains
- The project has expanded the Power Station 5 Complex’s nameplate capacity from 1.8 GW to 2.4 GW. Overall power station efficiency has increased:
- From 48.70% to 50.99% during summer.
- From 50.02% to 52.25% during winter.
- Achieved LHV efficiencies of 60.80% (winter) and 59.14% (summer), with NOx emissions within regulatory limits.
Sustainability Impact
Block 4 significantly contributes to Alba’s efforts to reduce Greenhouse Gas (GHG) emissions, aligning with Bahrain’s Net Zero 2060 objectives and Alba’s ESG Roadmap.
Project Management and Execution
- Alba’s core team, in collaboration with ESBI International, managed the project.
- Main contractors included SEPCOIII Bahrain Construction Company (lead), Tiejun International DMCC, and Mitsubishi Power Limited, with engagement of local subcontractors.
- The Project was completed one month ahead of schedule, within budget, and maintained exceptional safety standards.
KEY FACTS
BLOCK 4 CAPACITY
680.9
MWSAFETY PERFORMANCE
1 Million
Hours without LTICOMBINED CYCLE EFFICIENCY RATE
60%
TRAINING HOURS FOR ALBA EMPLOYEES
+8,000
Hours
KEY MILESTONES
KEY FACTS
Post Block 4 commissioning
Total Capacity of Power Stations
+4,200
MW
at 25 °c
GHG emissions intensity ratio to be reduced by
0.5
Tonnes of CO2
per one tonne of aluminium produced