Wärtsilä 50SG gas power plant

Wärtsilä 50SG

The Wärtsilä 50SG is a four-stroke, spark-ignited gas engine generating set. High efficiency in a small footprint combined with great reliability and flexibility makes this solution ideal for flexible baseload and balancing applications.

Download leaflet

Wärtsilä 50SG offers unique fast-starting capability, which enables rapid response to fluctuations inherent to renewable generation. The solution also supports you towards decarbonisation with its low greenhouse gas emissions and capability of hydrogen blending. Wärtsilä engine power plants can be delivered both as EPC and Equipment Delivery contracts.

Key benefits

High power density for balancing and peaking applications
No start cost, limitations nor degradation in number of starts
Fast-starting capability which enables rapid response to fluctuations typical to renewable generation
Capable of operating in high altitude

Runs on natural gas, biogas, synthetic methanol and is capable of hydrogen blending
Minimal water consumption
Low greenhouse gas emissions

Optimised performance and reliability supported by Wärtsilä Lifecycle solutions »

Customer stories

Portland General Electric, Portland, USA

Wärtsilä’s 50SG engines provide peaking power without efficiency loss in Port Westward Unit 2 in Portland, Oregon. The flexibility allows to adjust quickly when renewable energy – like wind and solar – rise and fall with natural variability.

→

Our proudest numbers

2min

to full load

50.2%

Electrical efficiency

5 000+

MW installed capacity

The details

Technical details

Engine generating set
Cylinder configurations	18V
Cylinder bore	500 mm
Piston stroke	580 mm
Engine speed	500 rpm (50 Hz), 514 rpm (60 Hz)
Performance *
	18V50SG
Rated electrical power (kW)	18 434 (50Hz) 18 875 (60Hz)
Electrical efficiency (%)	50.2 (50Hz) 50.0 (60Hz)
Heat rate (kJ/kWh)	7 165 (50Hz) 7 207 (60Hz)
Loading and unloading
	Connected to grid	Full load
Regular start time (min:sec)	00:30	< 5
Fast start time (min:sec)	00:30	< 2
Stop time (min)	1
Ramp rate (hot, load/min)	> 100%
Minimun Load
Unit level	10%
Plant level	1%

* Rated electrical power and electrical efficiencies are given at generator terminals at 100kPa ambient pressure, 25°C suction air temperature and 30% relative humidity, and without engine driven pumps. Power factor 1.0 (site). Electrical efficiency with 5% tolerance. Site conditions, fuel and applicable emission limits may have an impact on performance figures. Please contact Wärtsilä for project-specific performance data. Emission figures for LBF must be evaluated case by case. Catalyst systems are designed based on project specific requirements. Certain fuel components are poisonous for catalyst elements. Maximum amount of these components to be limited in the fuel in applications where catalyst system is installed.

Disclaimer: The information contained herein is provided for informational purposes only and may not be incorporated, in whole or in part, into any agreement or proposal. No representation of any kind is made in respect of any information contained herein and Wärtsilä expressly disclaims any responsibility for, and does not guarantee, the correctness or the completeness of the information. The calculations and assumptions included in the information do not necessarily take into account all the factors that could be relevant in a particular case. Information herein shall not be construed as a guarantee or warranty of the performance of any Wärtsilä technology, equipment or installation.