Soma Kolin Thermal Power Plant: Industrial Turning Point Or Risky Giant? – OpEd

The Soma Kolin Thermal Power Plant has secured a significant role in Turkey’s energy security as an advanced facility that utilizes low-calorific-value domestic lignite coal.

Despite its technological strengths, the plant has raised technical and societal concerns regarding site selection, fuel transportation, coal quality, and environmental impact. This article provides a comprehensive evaluation of the Soma Kolin Power Plant in terms of engineering infrastructure, construction process, operational model, and environmental implications.

1. Introduction

While Turkey continues to emphasize domestic and renewable resources in its energy strategy, thermal power plants still hold strategic importance during this transition. The Soma Kolin Power Plant stands as a critical example of transforming low-grade domestic lignite into economic value. However, alongside its technical achievements, the plant has attracted public scrutiny over its environmental and logistical challenges.

2. Site Selection and Spatial Controversies

Initially planned to be built on olive groves, the project conflicted with the principle of preserving agricultural land. Later relocated near forested areas, the site again drew criticism due to potential negative impacts on the local ecosystem. Proximity to residential zones has led to serious public concern about air pollution and health risks.

3. Coal Supply and Transportation Constraints

The plant uses low-quality lignite from the Deniş coalfield. However, the significant distance between the mine and the power station creates logistical challenges. Conveyor belt systems frequently malfunction due to wet coal, while truck-based transportation poses environmental, cost, and infrastructure disadvantages[^6].

4. Environmental and Social Impacts

The key environmental concerns of thermal plants center on air pollutants (PM, SO₂, NOₓ), water usage, and waste management. While the CFB (Circulating Fluidized Bed) technology employed at Soma Kolin helps reduce emissions, the high-moisture coal still leads to substantial emission levels[^1]. The cooling water demand may place pressure on local water resources[^5], and the plant’s proximity to settlements introduces public health risks[^7].

5. Technical Infrastructure and Equipment Supply

The plant integrates advanced engineering solutions:

• CFB Steam Boilers: Manufactured by Sumitomo Foster Wheeler, capable of burning low-grade lignite within environmental compliance standards[^1].

• Turbines and Generators: Siemens SST5-5000 models, produced in Germany, each with a net capacity of 255 MWe[^2].

6. Construction, Assembly, and Commissioning

Construction and commissioning took approximately five years. Main contractor Harbin Electric (China) collaborated with local subcontractor Efor Industrial[^3]. The timeline is as follows:

Phase                                Date

Groundbreaking                March 2014

Commissioning of Unit 1  January 2019

Commissioning of Unit 2  June 2019

7. Coal Quality and Dewatering Technology

The fuel is low-grade lignite with the following properties:

Parameter                 Range

Lower heating value  1,800–2,200 kcal/kg

Moisture content        35–45%

Ash content                20–30%

Sulfur content             1–2.5%

To reduce moisture before combustion, the plant uses a combination of crushers, screeners, settling ponds, and vacuum filter presses. This process lowers the moisture content to 30–32%[^5].

8. Human Resources and Operational Structure

During the construction phase, the project provided employment to around 4,500 workers. In the operational phase, the plant runs 24/7 on a three-shift schedule with approximately 720 personnel[^7].

9. Investment Cost and Financing Model

The total investment cost is around USD 1.2 billion, including boiler and turbine systems, ash treatment facilities, transport infrastructure, and transmission lines[^8].

Financing Breakdown:

• Equity: 25% (Kolin Holding)

• External Loans: 75% (Consortium backed by Ziraat Bank, Halkbank, Eximbank)[^9]

Repayment Projection:

Estimated between 7–9 years, depending on generation capacity, electricity market prices, and emission regulations[^10].

10. Conclusion

The Soma Kolin Thermal Power Plant represents a major step in Turkey’s goal to expand energy production from domestic coal resources. However, its long-term viability remains debatable due to concerns around fuel quality, environmental impact, transport logistics, and financial repayment risks. Future energy investments must adopt a holistic approach that balances technological efficiency with environmental and social impact assessments.

References

[^1]: Sumitomo SHI FW, CFB Boiler Technology, 2020.

[^2]: Siemens AG, SST5-5000 Turbine Technical Manual, 2019.

[^3]: Efor Industrial, Soma Project Report, 2021.

[^4]: Kolin Holding, Press Release, 2019.

[^5]: Turkish Ministry of Environment and Urbanization, Soma Kolin EIA Report, 2016.

[^6]: Ministry of Energy and Natural Resources, Inspection Report, 2023.

[^7]: GlobalData, Soma Kolin Plant Profile, 2024.

[^8]: Dünya Newspaper, Energy Investment Journal, March 2019.

[^9]: BloombergHT, Kolin Financing Model, 2020.

[^10]: EUAS, Thermal Power Plant Economic Analyses, 2023.