Powering the world

Arun, Sumatra

184 MW

The Arun power plant will serve to strengthen the Aceh Special District electricity system, ensuring reliable electricity supply to consumers during peak loads.

Arun - Sumatra, Indonesia


Meet a heavily fluctuating peak demand for short periods

Very large operating window required

Grid stability and reliability issues

Currently baseload plants must
be used also for peaking

Fast growing demand soon renders current capacity insufficient


Wärtsilä 34SG combustion engines capable of daily starts/stops without any impact on maintenance

Multiple engine solution with higher efficiency than open cycle GT plants

Internal combustion engines with excellent ramp rates and able to reach full load in 10 minutes

Smart Power Generation plants
used for peaking & grid stability

Attractive delivery time, financial
and development services


Lower lifecycle costs

Can follow load without reducing overall plant efficiency

Grid support

More efficient use of baseload plants

Customer can deliver power
faster and start earning on
electricity sales earlier

With a population of nearly 250 million and an economy that has grown at an average of 5.6 per cent a year over the last decade, Indonesia is hungry for power. To improve electrification and meet a demand that is expected to grow at 9-10 percent per annum in the coming years, much of the new capacity that is being added is in the form of large baseload coal-fired plant. However, building an optimum generating system that can also meet peak electricity demand is a challenge.
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Main data

   Customer   PT Wijaya Karya Persero Tbk (PT Wika) (Utility)
   Type   Wärtsilä 34 gas power plant
   Operating mode   Peak load/stand-by & emergency
   Gensets   19 x Wärtsilä 20V34SG
   Total output   184 MW 
   Fuel   LNG (Liquefied natural gas)
   Scope   EEQ (Engineering & Equipment)
   Delivered   2015

Related downloads

Read the success story in this brochure

Learn more about how easy it is to run and maintain a flexible Wärtsilä engine power plant

Find in-depth info about our gas and multi-fuel power plant solutions in this brochure

Contact info

If you want to know more about the Arun project, please contact

Suraj Narayan
Sales Director, Power Plant
Wärtsilä Energy Solutions

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