Hydropower Dominance in the South Caucasus
Georgia's electricity generation is overwhelmingly renewable, with approximately 80% of its power coming from clean sources — a figure that places it among the greenest electricity mixes in the broader European and Central Asian region. This remarkable share is almost entirely attributable to hydropower, which exploits the country's extraordinary water resources: over 26,000 rivers flow through Georgian territory, draining the Greater and Lesser Caucasus mountain ranges. The total theoretical hydropower potential is estimated at around 80 TWh per year, of which only about 20–25% has been developed to date, according to the Georgian Ministry of Economy and Sustainable Development. This untapped potential has made Georgia a focal point for international energy investors and a subject of environmental debate.
The Enguri Dam: Soviet Engineering Marvel
The crown jewel of Georgia's hydropower fleet is the Enguri Dam, located on the Enguri River in the Samegrelo-Zemo Svaneti region near the de facto border with the breakaway territory of Abkhazia. Completed in 1987, the Enguri arch dam stands 271.5 meters tall, making it one of the highest arch dams in the world — taller than the Hoover Dam in the United States (221 m) and approaching the height of the Jinping-I Dam in China (305 m). The associated Enguri Hydropower Plant has an installed capacity of approximately 1,300 MW across five turbines, generating roughly 3.8 TWh annually in an average water year. The plant is operated by Engurhesi LLC, a state-owned enterprise under the Georgian Ministry of Economy. Uniquely, the dam itself sits in Georgian-controlled territory, but the powerhouse is located on the Abkhaz side of the ceasefire line — a geopolitical arrangement that requires ongoing cooperation between Tbilisi and the de facto Abkhaz authorities, with electricity shared between both sides under a decades-old informal agreement. This arrangement has occasionally been strained but has never been permanently disrupted, even during periods of political tension.
Seasonal Variation: The Feast-and-Famine Cycle
Hydropower's dominance creates a pronounced seasonal pattern in Georgia's electricity balance. During spring and early summer (April through July), snowmelt from the Caucasus mountains swells rivers to peak flows, and hydropower plants generate far more electricity than the country consumes domestically. During this period, Georgia becomes a net electricity exporter, selling surplus power to Turkey via the 400 kV Akhaltsikhe–Tortum interconnector and to Azerbaijan. In contrast, during the dry winter months (December through March), river flows decline sharply, reducing hydropower output by 40–60% compared to summer peaks. Georgia must then import electricity and natural gas to cover the deficit. Imports flow primarily from Azerbaijan and, to a lesser extent, from Russia via the North Caucasus interconnection. This seasonal swing is a structural vulnerability — a particularly dry year or an unusually cold winter can create a significant supply gap. The winter of 2022–2023, for instance, saw higher-than-average import volumes due to below-normal precipitation in the Enguri and Rioni basins.
Beyond Hydro: Solar and Wind Potential
While hydropower dominates today, Georgia has meaningful untapped solar and wind resources. The Kakheti region in eastern Georgia and the Kvemo Kartli plateau south of Tbilisi receive 1,800 to 2,200 hours of sunshine per year — comparable to parts of southern France or northern Spain. The Georgian Energy Development Fund (GEDF) and the Ministry of Economy have identified these areas as priority zones for utility-scale solar development. Several projects are in planning or early construction phases, including a 50 MW solar plant near Sagarejo supported by the European Bank for Reconstruction and Development (EBRD). Wind energy potential is concentrated in mountain passes and ridgelines, particularly in the Javakheti plateau (average wind speeds of 7–9 m/s at hub height) and the Gori–Kaspi corridor. The Kartli Wind Farm, a 20.7 MW facility near Gori developed by Georgia Global Utilities, began operations in 2016 as the country's first commercial-scale wind project. However, wind and solar together still account for less than 2% of total generation — a negligible share that reflects both the historical abundance of cheap hydropower and the relatively recent adoption of renewable energy auction frameworks.
Controversy: The Nenskra Dam Project
The most contentious energy project in Georgia is the proposed Nenskra Hydropower Plant, a 280 MW facility planned for the Nenskra River valley in Svaneti. The project, developed by a joint venture between the Korean Water Resources Corporation (K-water) and JSC Partnership Fund (a Georgian sovereign wealth entity), would include a 130-meter rockfill dam and a 14.7-kilometer headrace tunnel. Proponents argue it would generate approximately 1,200 GWh annually, significantly reducing winter electricity imports and generating revenue from summer exports. Critics — including environmental organizations like Bankwatch Network, Green Alternative (a Georgian NGO), and local Svan communities — have raised concerns about the submersion of alpine meadows and forests, disruption of the Nenskra River's ecosystem (home to endemic fish species), seismic risk in an active tectonic zone, and the displacement or disruption of traditional Svan pastoral livelihoods. Construction has been repeatedly delayed by financing challenges and environmental review processes. As of early 2026, the project's future remains uncertain, with the Georgian government signaling continued interest but international lenders expressing caution.
Comparison and Context
Georgia's 80% renewable electricity share is significantly higher than the global average of approximately 30% and surpasses most industrialized nations. The United States generates roughly 22% of its electricity from renewables, the United Kingdom around 42%, and Canada about 68% (also heavily hydro-dependent). Australia sits at approximately 35%, driven primarily by solar and wind growth in recent years. Georgia's figure is impressive but comes with the caveat that it is highly dependent on a single source — hydropower — which is itself vulnerable to climate change. Glaciologists studying the Greater Caucasus have documented accelerating glacier retreat over the past two decades, which may initially increase summer river flows (as ice melts faster) but will eventually reduce long-term water availability. Diversifying into solar and wind is therefore not just an environmental aspiration but a strategic necessity for maintaining Georgia's green energy advantage in the coming decades.
This article was created on April 19, 2026
