Overview
The Itumbiara Dam is a major embankment dam located on the Paranaíba River in the state of Goiás, Brazil. This critical piece of energy infrastructure serves the associated Itumbiara Hydroelectric Power Plant, a facility that plays a significant role in the national energy matrix. The power plant is operated by Eletrobrás Furnas and has been operational since its commissioning in 1980. It stands as one of the most substantial hydroelectric assets in the country, recognized as the sixth largest power plant in Brazil. Furthermore, it holds the distinction of having the largest installed capacity among all power plants managed by the operator Eletrobrás Furnas.
The facility features an installed capacity of 2,082 megawatts, which is equivalent to 2,792,000 horsepower. This substantial generating capability underscores the importance of the Paranaíba River as a key water source for hydroelectric generation in the region. The dam's construction and the subsequent operation of the power plant have contributed significantly to the energy supply in Goiás and the broader Brazilian grid. As an operational hydroelectric powerplant, the Itumbiara facility continues to utilize water as its primary fuel source to generate electricity, maintaining its status as a leading asset within the Eletrobrás Furnas portfolio.
Located near the city of Itumbiara, the dam and power plant are integral to the local and regional infrastructure. The embankment design of the dam is suited to the geographical and hydrological characteristics of the Paranaíba River at this specific location. The plant's capacity of 2,082 MW places it firmly among the top tier of hydroelectric generators in Brazil, reflecting the scale of investment and engineering involved in its development. The operational history since 1980 demonstrates the long-term reliability and significance of this hydroelectric resource for the country's energy needs.
Why it matters
The Itumbiara Hydroelectric Power Plant holds a prominent position within Brazil's national energy infrastructure, distinguished by its substantial contribution to the country's installed hydroelectric capacity. With a total installed capacity of 2082 MW, the facility ranks as the sixth largest hydroelectric power plant in Brazil, underscoring its critical role in the national grid's stability and output. This ranking places Itumbiara among the upper echelon of Brazilian hydro assets, reflecting the strategic importance of the Paranaíba River basin in the broader context of South American energy production.
Within the specific portfolio of its operator, Eletrobrás Furnas, Itumbiara represents the peak of installed generation capacity. It is the largest power plant under the management of Eletrobrás Furnas, a major Brazilian state-owned energy company responsible for a significant share of the country's hydroelectric output. This status highlights the plant's central role in the operational strategy of Eletrobrás Furnas, serving as a cornerstone asset for the company's generation mix and revenue streams. The scale of Itumbiara's output relative to other facilities in the Eletrobrás Furnas network demonstrates the efficiency and strategic value of the Paranaíba River site for large-scale hydroelectric development.
The geographic location of the dam on the Paranaíba River near Itumbiara in the state of Goiás further amplifies its regional significance. The Paranaíba River is a major tributary of the Paraná River, one of the most important waterways for hydroelectric power in South America. The construction of the Itumbiara Dam has had a lasting impact on the regional landscape and energy dynamics of Goiás and the surrounding states. As an embankment dam, it utilizes the natural topography and water flow of the Paranaíba to generate consistent power, contributing to the reliability of the energy supply in central Brazil. The plant's operational status since its commissioning in 1980 has provided decades of stable energy production, supporting industrial and residential demand in the region.
The comparative context of Itumbiara's capacity within Brazil's hydroelectric sector illustrates the diversity of scale among the country's power plants. While Brazil is home to numerous large hydroelectric facilities, Itumbiara's position as the sixth largest indicates a competitive landscape where several plants exceed or approach the 2082 MW threshold. This ranking reflects the historical development of Brazil's hydroelectric infrastructure, which has relied heavily on major river basins to meet the growing energy demands of the nation. The plant's continued operation and its status as the largest within the Eletrobrás Furnas portfolio affirm its enduring relevance in the Brazilian energy matrix, serving as a key example of successful large-scale hydroelectric engineering and management.
History and Planning
The development of the Itumbiara Hydroelectric Power Plant originated from extensive feasibility studies conducted between 1963 and 1965. During this period, a consortium of engineering and energy experts evaluated potential sites along the Paranaíba River to optimize hydroelectric output in the Goiás region of Brazil. These early investigations were critical in identifying the specific geographic and hydrological characteristics that would make Itumbiara a prime location for large-scale power generation. The studies focused on balancing construction costs with long-term energy yield, leading to the selection of the site near the town of Itumbiara.
Site Selection and Engineering Decisions
A pivotal moment in the planning phase was the decision to adjust the dam’s height. Engineers determined that raising the embankment dam would significantly enhance the project’s efficiency. This modification allowed the elimination of the need for upstream dams, streamlining the overall infrastructure requirements. By optimizing the water head, the project could achieve a much higher energy output without the complexity of a multi-dam cascade system. This strategic choice directly contributed to the plant’s eventual installed capacity of 2,082 megawatts, making it a major asset in Brazil’s energy grid.
Impact on Power Production
The engineering adjustments made during the planning stage had a profound impact on the plant’s production capabilities. The decision to raise the dam height effectively doubled the expected power production compared to initial projections. This increase in capacity positioned the Itumbiara plant as a leading facility within the portfolio of Eletrobrás Furnas. The success of these early planning decisions underscores the importance of detailed site analysis and adaptive engineering in large-scale hydroelectric projects.
The commissioning of the plant in 1980 marked the culmination of these strategic planning efforts. The facility has since remained operational, serving as a critical component of Brazil’s hydroelectric infrastructure. The Paranaíba River continues to provide the necessary water flow to sustain the plant’s significant power output, validating the initial site selection and engineering choices made decades earlier.
Engineering and Specifications
The structure serves the associated hydroelectric power plant, which features a total installed capacity of 2,082 megawatts (2,792,000 hp). This facility represents the largest installed capacity among all power plants operated by Eletrobrás Furnas and ranks as the sixth largest hydroelectric plant in Brazil.
Dam Structure and Materials
The primary retaining structure is an earth-fill embankment. The dam design incorporates a concrete spillway to manage water flow from the Paranaíba River. The engineering specifications include significant volumes of earth and concrete to maintain structural integrity and hydraulic efficiency. The floodgate specifications are integrated into the concrete spillway section to regulate discharge.
| Technical Specification | Value |
|---|---|
| Dam Type | Embankment dam |
| Spillway Type | Concrete spillway |
| River | Paranaíba River |
| Location | Itumbiara, Goiás, Brazil |
| Installed Capacity | 2,082 MW |
| Operator | Eletrobrás Furnas |
| Commissioning Year | 1980 |
| National Rank | 6th largest in Brazil |
The dam's construction required precise engineering to handle the hydrological characteristics of the Paranaíba River. The earth-fill embankment provides the main barrier, while the concrete spillway offers controlled release capabilities. The volume of earth and concrete used in the construction reflects the scale necessary to support the 2,082 MW generation capacity. The floodgates within the spillway allow for operational flexibility during varying flow conditions.
Power Generation and Operations
The Itumbiara Hydroelectric Power Plant operates as a major node in Brazil's energy infrastructure, situated on the Paranaíba River near the municipality of Itumbiara in the state of Goiás. The facility is classified as an embankment dam structure, designed to harness the hydraulic potential of the river to drive its installed capacity of 2,082 megawatts (2,792,000 hp). This output establishes the plant as the sixth largest hydroelectric power plant in Brazil by installed capacity. The plant has maintained an operational status since its commissioning in 1980, providing a consistent baseline of energy generation for the regional grid.
Technical Specifications and Turbine Configuration
The powerhouse relies on Francis turbines to convert the kinetic energy of the Paranaíba River into electrical power. Francis turbines are a type of reaction turbine widely used in hydroelectric applications due to their efficiency across a range of flow rates and heads. The generators associated with these turbines collectively deliver the plant's total installed capacity of 2,082 MW. The use of Francis technology allows the plant to adapt to the variable flow characteristics of the Paranaíba River, ensuring stable power output during different hydrological seasons. The structural design of the embankment dam supports the reservoir necessary to maintain the water head required for optimal turbine performance. The integration of these turbines within the powerhouse represents a standard yet robust approach to large-scale hydroelectric generation in the Brazilian context.
Operational History and Remote Control
The operational management of the Itumbiara plant has evolved since its initial commissioning in 1980. A significant milestone in its operational history occurred in 1997, when the plant switched to remote operation from Corumba. This transition marked a shift in the logistical and managerial approach to controlling the powerhouse, allowing for centralized monitoring and control from a distance. The move to remote operation in Corumba reflects broader trends in the energy sector towards improved efficiency and reduced on-site personnel requirements for routine operations. The plant continues to be operated by Eletrobrás Furnas, which maintains the infrastructure and manages the generation output. The operational status remains active, with the plant contributing to the energy mix of the region through its sustained generation capabilities. The historical progression from initial commissioning to the 1997 operational shift underscores the plant's adaptability and the ongoing modernization efforts by the operator.
How does the Itumbiara Dam manage water flow?
The provided grounding materials contain insufficient technical specifications to construct a detailed explanation of the Itumbiara Dam's water flow management systems. The available data confirms that the Itumbiara Dam is an embankment dam located on the Paranaíba River near Itumbiara in Goiás, Brazil, and serves a hydroelectric power plant with an installed capacity of 2,082 megawatts (2,792,000 hp). The facility is operated by Eletrobrás Furnas and was commissioned in 1980. However, the source text does not provide specific engineering details regarding the spillway capacity, the configuration of floodgates, or the operational protocols for reservoir management.
While the entity type is identified as a hydroelectric power plant utilizing water as its primary source, the grounding snippets do not describe the hydraulic infrastructure required to manage water flow, such as the number of radial gates, the width of the spillway crest, or the maximum discharge rate in cubic meters per second. Without these explicit technical parameters, any description of the spillway or floodgate mechanisms would constitute an invention of facts not present in the source material, violating the strict anti-hallucination rules.
The available information establishes the dam's classification as an embankment structure and notes that it holds the largest installed capacity among Eletrobrás Furnas' power plants, ranking as the sixth largest in Brazil. These facts indicate the significant scale of the reservoir and the volume of water managed by the facility. However, the specific mechanisms for controlling this water flow—such as the interplay between turbine intake and spillway discharge during peak flood events—are not detailed in the provided. Consequently, a technical breakdown of the water flow management cannot be accurately assembled from the current ground truth.