Wärtsilä 34SG gas power plant

Wärtsilä 34SG

The Wärtsilä 34SG is a four-stroke, spark-ignited, lean-burn gas engine generating set. Its agility and flexibility make the Wärtsilä 34SG generating set an excellent choice for both flexible baseload and balancing renewables applications. It also offers a unique fast-starting capability, which enables rapid response to fluctuations inherent to renewable generation.

Download leaflet

Wärtsilä 34SG helps to provide an efficient, reliable and cost-efficient source of energy for power producers. It also provides enough spinning reserve for balancing whenever needed. The Wärtsilä 34SG engine generating set is extremely reliable as it is based on the well-proven Wärtsilä 32 engine, that has a track record from the mid-1990s. The Wärtsilä 34SG features a wide power output range from 5.6 to 9.8 MW, as it is available in 12V, 16V and 20V cylinder configurations. Wärtsilä engine power plants can be delivered both as EPC and Equipment Delivery contracts.

Key benefits

No start cost, limitations nor degradation in number of starts
Compact sizing enables transportation to demanding locations
Capable of operating in high altitude

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

Longer maintenance intervals

Customer stories

Paras Energy, Nigeria

Since deciding in 2009 that its three new power plants would operate with Wärtsilä gas engines rather than gas turbines, the conventional choice at that time in Nigeria, Paras Energy has continued to benefit from that decision.

Read more

→
McArthur River Mine, Australia

The McArthur River Mine in Australia, is one of the world’s largest providers of zinc in bulk concentrate form. Global energy producer EDL is responsible for supplying power to the mine. Wärtsilä has been a trusted partner for EDL for many years now, delivering gas engines and providing lifecycle services for condition-based maintenance to the power plant. The end result is better fuel efficiency, a low levelised cost of electricity, lower OPEX and guaranteed availability.

Read more

→
Makuhari, Japan

The growing demand for natural gas as fuel and the increasing importance of environmental values in Japan have encouraged investments in gas-fired power generation systems. The green point of view has also contributed to the rise of interest towards trigeneration energy sources.

Read more

→

Our proudest numbers

2 min

to full load

48.9%

Electrical efficiency

1 000

generating sets delivered

The details

Technical data

Engine generating set
Cylinder configurations	12, 16, 20V
Cylinder bore	340 mm
Piston stroke	400 mm
Engine speed	750 rpm (50 Hz), 720 rpm (60 Hz)
Performance *
	20V34SG	16V34SG	12V34SG
Rated electrical power (kW)	9 795 (50Hz) 9 388 (60Hz)	7 830 (50Hz) 7 491 (60Hz)	5 840 (50Hz) 5 580 (60Hz)
Electrical efficiency (%)	48.9 (50Hz) 48.8 (60Hz)	48.9 (50Hz) 48.7 (60Hz)	48.0 (50Hz) 47.8 (60Hz)
Heat rate (kJ/kWh)	7 363 (50Hz) 7 374 (60Hz)	7367 (50Hz) 7396 (60Hz)	7 501 (50Hz) 7 538 (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.