Renewable powerActive

Sarulla Geothermal Power Generation Project

Sarulla Operations Limited, a consortium of Inpex, Itochu, Kyushu Electric Power, Medco Power Indonesia and Ormat International, develops steam resources in North Sumatra's Silangkitang and Namora-I-Langit fields to run three geothermal units totalling about 320 megawatts.

Silangkitang and Namora-I-Langit reservoirs, North Sumatra, IndonesiaGrid-connected geothermal powerNone
Image credit
Sarulla Geothermal Project, Indonesia. Photograph credited to Delphos Corporation; Commons date 19 May 2025.Project photograph · Delphos Corporation · CC BY-SA 4.0 · 2025 · Resized; display cropImage source ↗Licence ↗
OperatorSarulla Operations Limited
EcosystemGrid-connected geothermal power
StandardNone
StatusActive
LocationSilangkitang and Namora-I-Langit reservoirs, North Sumatra, Indonesia
Overview

Inside the project

The project operates under a 30-year sales contract with state utility PLN and a joint operating contract with Pertamina Geothermal Energy.

Asian Development Bank financing of USD 250 million was joined by the Clean Technology Fund and a Canadian climate fund, for a total of USD 350 million.

320 MW
Combined capacity, three units
350M USD
Total project financing

Objectives

  • Develop steam resources in the Sarulla concession area
  • Construct, operate and maintain three geothermal power generation units

Approach

  • Three geothermal generation units draw on steam from the Silangkitang and Namora-I-Langit fields under a joint operating contract with state-owned Pertamina Geothermal Energy, selling power to PLN under a 30-year contract.

Sources

Inspect 1 source
  1. adb.org ↗https://www.adb.org/projects/42916-014/main

Documented by one public source so far.

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