Maren Maras plans 99-MW geothermal power development in Aydin, Türkiye

Maren Maras is planning a 99-MW geothermal development in Aydın’s Germencik district, consisting of three 33-MW plants with binary-cycle technology, based on regulatory filings and the Final EIA report. The project is expected to generate about 730 GWh annually and requires an estimated TRY 1.82 billion investment.

Maren Maras Plans 99-MW Geothermal Power Development in Aydın, Türkiye

Maren Maras Elektrik Üretim Sanayi ve Ticaret A.Ş., part of Kipaş Holding, has advanced plans for a major geothermal expansion in Türkiye’s Aydın province. According to regulatory documents and reporting on the company’s environmental filings, the project will add 99 MW of installed geothermal capacity in the Germencik district through three separate 33-MW power plants.

The project adds another large-scale development to one of Türkiye’s most active geothermal regions. Aydın has long been a core province for geothermal power in the country, and Germencik in particular has repeatedly attracted plant development, drilling activity, and reinvestment by local operators.

Project Scope

The development is planned within the J-552 geothermal resource operating license area, which covers the Camikebir, Çamköy, Hıdırbeyli, Mursallı, and Reisköy neighborhoods. The company’s filings indicate that the project will comprise three power plants, each with 33 MW of capacity, bringing the total to 99 MW.

The EIA documentation also identifies a total of 27 well locations for the project. Each plant is expected to include six production wells and three reinjection wells, showing that the development is designed as a phased, field-based geothermal operation rather than a single-plant buildout.

That structure suggests a project optimized for reservoir management and long-term output stability. It also indicates a fairly substantial subsurface campaign, since geothermal projects of this size depend heavily on drilling success, fluid chemistry, and reinjection performance.

Technology Choice

The plants are planned to use binary-cycle technology, which is often favored when operators want to convert moderate-temperature geothermal fluids into electricity while minimizing emissions and surface losses. In the project filing, the estimated geothermal fluid requirement is about 5,400 tons, with a maximum of 1,800 tons per unit per hour.

Binary systems are particularly relevant in markets where developers want lower environmental impact and greater flexibility in handling geothermal brines. For Türkiye, where geothermal power has become a major renewable-energy segment, this technology choice fits the broader pattern of commercial field development supported by experienced drilling and equipment supply chains.

The use of binary-cycle technology also aligns with Maren Maras’ recent operating history in Aydın. In 2025, the company announced the start of operations at the Nezihe Beren 2 and Emir geothermal plants, both of which also used binary-cycle technology supplied by Exergy.

Output and Economics

According to the EIA report, the proposed plants are expected to generate around 730 GWh of electricity annually. That output would be fed into Türkiye’s national interconnected grid, making the project a notable contributor to baseload renewable supply in the region.

The reported total investment cost is TRY 1.82 billion, or about USD 37.25 million based on the filing cited in the reporting. That implies a capital-intensive project, but one consistent with geothermal’s broader profile: high upfront drilling and construction costs in exchange for steady output over long operating lives.

The energy yield is also significant at the provincial level. Reporting around the project has said the annual generation could meet the electricity needs of roughly 215,000 people, underscoring the scale of the development in local terms.

Company Background

Maren Maras, also referenced in some reporting as Maren Energy, is part of Kipaş Holding’s energy group and has become a visible geothermal operator in Türkiye. The company already has a footprint in Aydın through existing operating assets and ongoing field activity.

Recent reports show the company continuing to expand its geothermal presence in the Germencik area through both drilling and generating assets. In March 2025, the company initiated EIA procedures for wells HB-34 and BK-54 in the same J-552 license area, reflecting continued exploration and resource development momentum.

The company’s operational progress in late 2025 also shows that its geothermal program is moving beyond planning. The commissioning of Nezihe Beren 2 and Emir suggests that Maren Maras is building a broader production portfolio rather than pursuing isolated projects.

Aydın’s Geothermal Role

Aydın remains one of Türkiye’s most important geothermal provinces, especially for power generation. Germencik has emerged as a concentrated development zone where multiple operators have drilled, commissioned, and expanded geothermal capacity over time.

That concentration matters because geothermal success depends on geology, permitting, drilling capability, and grid access all coming together in the same place. Aydın has managed to support that combination more effectively than many other regions, which helps explain why large project announcements continue to cluster there.

The region’s geothermal depth also means each new project can be tied to a longer industrial story. Rather than serving as a one-off investment, the Maren Maras plan looks like part of a broader buildout of geothermal expertise, infrastructure, and operating experience in western Türkiye.

What It Means

If completed as planned, the 99-MW project would materially strengthen Maren Maras’ position in Türkiye’s geothermal sector. It would also add a meaningful block of new renewable baseload generation at a time when energy security and domestic power supply remain important policy priorities.

The project’s size, technology choice, and well count all point to a development that is technically ambitious but consistent with the company’s recent geothermal trajectory. In practical terms, the next milestones to watch will be EIA approval, drilling execution, reservoir performance, and the sequencing of plant construction.

For the wider market, the project is another signal that Türkiye’s geothermal sector remains active, investable, and capable of supporting new utility-scale developments. Aydın, once again, is at the center of that story.

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