Steam and Silence: The Uncertain Fate of Ethiopia’s Geothermal Revolution
By : Robert Buluma
Despite sitting on a volcanic rift valley with over 10,000 MW of clean energy potential, Ethiopia produces just 7.3 MW of geothermal power—enough to power a small town, but a fraction of what the nation needs. For a country long dependent on hydropower (which fluctuates with drought) and biomass (which degrades forests), geothermal offers the dream of steady, 24/7 baseload energy.
However, as investigations into the flagship Aluto Langano and Tulu Moye projects reveal, the road from geological promise to actual megawatts is fraught with technical failure, financial gridlock, and conflicting narratives.
The Ghosts of Aluto Langano
The story begins and, in some ways, remains stuck at Aluto Langano. Developed by the former EEPCO (now Ethiopian Electric Power/EEP), this site is a textbook case of high potential meeting harsh reality.
The resource itself is world-class. Data confirms a high-temperature hydrothermal system with reservoir temperatures exceeding 280°C and a theoretical capacity of up to 63 MW. Yet, the original pilot plant, commissioned in 1998, failed spectacularly. The mineral-rich brine caused aggressive silica scaling and corrosion, choking the pipes and rendering the plant largely inoperable shortly after launch.
Current Status (2026): EEP is currently engaged in a dual-track rehabilitation effort. Work is underway to drill five new wellheads and rehabilitate the existing plant. The goal is to finally integrate this asset into the national grid to expand the energy mix, though the technical scars of the past make investors wary of a simple "drill and burn" approach.
The $2 Billion Question at Tulu Moye
While Aluto struggles with physics, the Tulu Moye project (a 150 MW independent power project) is caught in a web of security claims, financial disputes, and geological doubt.
For nearly two years, construction stalled. The developer, TMGO (backed by Meridiam and Reykjavik Geothermal), cited security threats, specifically an armed storming of the site. However, state officials have consistently rejected this narrative.
Two Conflicting Realities:
· The Developer’s Stance: The project stopped because of security risks, forcing the withdrawal of foreign contractors like KenGen and Marriott Drilling.
· The Government’s Stance: EEP CEO Ashebir Balcha argues the real reason is technical and financial. "The real reason is that the developers failed to find the geothermal energy source after investing a large sum of money," he said, noting that similar wind projects operate peacefully in the same zone.
The Negotiations (2026): Talks are now officially ongoing to revive the project, but the developers want new contract terms. These include guarantees on foreign currency availability (a major issue in Ethiopia’s dollar-strapped economy), the ability to transfer profits abroad in USD, and the inclusion of international arbitration clauses. The latter would allow disputes to be settled outside Ethiopian courts, a sign of eroded trust.
The Bigger Picture: Why Geothermal Stalls in Ethiopia
The trouble at Tulu Moye and Aluto Langano reflects systemic barriers.
1. The Geological Data Gap
Ethiopia sits on the volatile East African Rift System. While this creates heat, it also creates seismic risks and complex geology. There is a severe lack of high-resolution, pre-competitive data. Investors often go in blind, drilling "wildcat" wells without knowing if the steam is actually there—a financial risk few are willing to take.
2. The "Hot Water" Problem
Even when they find heat, developers face the same chemistry problem as Aluto. The high levels of Total Dissolved Solids (TDS) in the alkaline fluids cause rapid scaling. Without sophisticated reinjection systems and corrosion-resistant materials, plants can kill themselves in a matter of months.
3. Policy Vacuum
In a stunning admission, the Ministry of Mines told Parliament that it has no operational blueprint for the geothermal sector. While investors are interested, the government is "not yet ready." Lawmakers criticized the ministry for creating only a fraction of planned jobs and failing to conduct scheduled field assessments.
The Major Players Waiting in the Wings
Despite the chaos, the scale of the opportunity keeps major players engaged.
· Corbetti Geothermal: Located near Hawassa, this project aims for an eventual 500 MW. However, it remains in pre-construction. After several delays, the Power Purchase Agreement was extended, but financing remains dependent on proving the resource.
· Aluto Langano II: Separate from the rehab project, a 70 MW expansion is on the books, but its status remains "paused" due to broader grid and financial constraints.
The Way Forward
For Ethiopia to turn its 10,000 MW potential into reality, it needs more than just drilling rigs. Based on the evidence, the following steps are critical:
1. De-risk the geology
The government is investing significant funds in exploratory drilling to prove resources before private investors are asked to pay. If the state takes the hit for finding the steam, private capital is much more likely to build the plant.
2. Resolve the currency crisis
The demands from TMGO regarding dollar transfers are a warning. If foreign investors cannot get their returns out of the country, or cannot pay for imported drilling equipment due to forex shortages, the entire IPP model collapses.
3. Acknowledge the chemistry
The industry must stop treating Aluto Langano as an anomaly and recognize it as the standard. Future tenders must require proven chemical management strategies (like pH modification or advanced wellhead separators) rather than optimistic assumptions.
4. Build a real strategy
The admission that the Ministry of Mines lacks a strategy is unacceptable. The government must deliver a clear roadmap, including firm dates for tenders, standardized PPAs, and a guarantee of security for foreign personnel that holds up in international arbitration.
Ethiopia stands at a crossroads. It has the heat, the fractures, and the water to power an industrial revolution. But without overcoming the "Aluto curse"—where technical, financial, and security risks converge—the steam will continue to dissipate into the African sky, unused.
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