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Ormat Technologies: The Undisputed Leader in Indonesia's Geothermal Concessions – Spotlight on the Telaga Ranu Victor

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By Robert Buluma Alphaxioms
Ormat Technologies: Why It Remains the Go-To Choice for Geothermal Concessions in Indonesia Spotlight on the Latest Telaga Ranu Award

Posted on January 17, 2026 by Alphaxioms Geothermal News

Indonesia, with its vast volcanic landscape, holds one of the world's largest untapped geothermal potentials, estimated at around 28,000 MW. The government has been aggressively pushing for geothermal development as part of its energy transition, aiming to replace diesel-based power with reliable, baseload renewable energy. In this competitive arena, Ormat Technologies, Inc. (NYSE: ORA) consistently emerges as the preferred partner for major concessions and projects.

On January 15, 2026, Ormat announced it was awarded the Telaga Ranu Geothermal Working Area in Halmahera, North Maluku, by Indonesia's Ministry of Energy and Mineral Resources. This came after a competitive tender involving four qualified bidders, including major players like PT Pertamina Geothermal Energy and PT Barito Renewables Energy. The site, located in the country's highest approved feed-in tariff zone, has the potential to deliver up to 40 MW of baseload geothermal power by the end of 2030, aligning perfectly with PT PLN's Electricity Supply Plan (RUPTL) and supporting decarbonization efforts in remote regions.

This latest win is no fluke,it's the latest chapter in Ormat's proven track record in Indonesia.

A Long-Standing Presence and Proven Expertise

Ormat has been active in Indonesia for decades, leveraging over 50 years of global geothermal experience. The company is the only vertically integrated geothermal player, handling everything from exploration and design to manufacturing, construction, ownership, and operation. This end-to-end capability minimizes risks, optimizes efficiency, and ensures sustainable resource management,key factors that governments and partners value in complex tenders.

One of Ormat's flagship contributions is its role in the massive Sarulla Geothermal Power Plant in North Sumatra, one of the world's largest geothermal complexes. Ormat partnered in this 330 MW project (completed in phases, with the final unit online in 2018), combining its binary technology with other systems for maximum output and environmental sustainability.

More recently:

- In 2019, Ormat acquired a 49% stake in the Ijen Geothermal Project in East Java through a joint venture with Medco Power.
- The Ijen facility reached commercial operations in February 2025, delivering 35 MW (with Ormat's share at 17 MW) of low-carbon power.
- Ormat has also secured supply contracts, such as a 14 MW extension for the Salak geothermal field and exploration agreements in North Sulawesi.

These successes build a strong portfolio, with Ormat currently operating assets in Indonesia as part of its global 1,310 MW geothermal and solar generating portfolio.

Key Reasons Ormat Consistently Wins Awards

Why does Ormat keep securing these high-stakes concessions? Several factors set it apart:

1. Proven Track Record and Reliability 
Governments favor companies with demonstrated success in developing and operating geothermal plants sustainably. Ormat's history of delivering projects on time, with minimal environmental impact (e.g., 100% fluid reinjection in many cases), builds immense trust. CEO Doron Blachar emphasized this in the Telaga Ranu announcement, noting the "trust placed in us by the Government of Indonesia."

2. Advanced Technology and Innovation  
Ormat's proprietary Ormat Energy Converter (OEC) excels at converting low- to high-temperature heat into electricity efficiently. This modular, flexible technology suits Indonesia's diverse geothermal resources and supports enhanced geothermal systems (EGS) advancements.

3. Competitive Edge in Tenders  
Tenders like Telaga Ranu are highly competitive, yet Ormat's vertical integration reduces costs and risks, making its bids more attractive. Its global experience in challenging environments (e.g., Kenya, Guatemala) translates well to Indonesia's remote sites.

4. Alignment with National Goals  
Indonesia prioritizes baseload renewables to replace diesel in islands like Halmahera. Ormat's projects provide 24/7 reliable power, directly supporting energy security, economic growth, and net-zero ambitions.

5.Strong Local Partnerships and Commitment
Ormat frequently partners with Indonesian firms (e.g., Medco Power, Archi Indonesia), fostering technology transfer and local benefits.

Visualizing Ormat's Geothermal Success in Indonesia

Here are some illustrative images of Ormat's key geothermal projects and technology in action:

This shows the expansive Sarulla Geothermal Power Plant, highlighting Ormat's role in large-scale development.

An aerial view of a modern geothermal power plant, representative of Ormat's efficient, low-impact facilities like Ijen.

Ormat's binary cycle technology in operation, demonstrating the clean energy conversion process that gives the company its edge.

Looking Ahead

With the Telaga Ranu award, Ormat's exploration pipeline in Indonesia grows significantly, adding to its ~59 MW operating capacity. This reinforces Ormat's position as a leader in the country's geothermal sector.

As Indonesia accelerates its renewable push, Ormat's combination of experience, technology, and reliability makes it the natural choice for future concessions. The Telaga Ranu win is a testament to why Ormat has "always been the main awarded" in this space,delivering results that matter for energy transition and sustainability.


Stay tuned to Alphaxioms Geothermal News for more updates on this exciting project and the global geothermal landscape!

Source: Invest News 

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