Overview
The Glomfjord power plant is an operational hydroelectric facility located in the village of Glomfjord within Meløy Municipality, Nordland county, Norway. Owned and operated by Statkraft, the plant serves as a key energy infrastructure asset in the region, utilizing the natural topography of the area to generate electricity. The facility has a total installed capacity of 120 MW, contributing to the broader Norwegian power grid. The plant was originally commissioned in 1920, marking it as a long-standing component of the regional energy landscape. Its strategic location allows for efficient water management and power generation, leveraging the elevation differences between local lakes and the sea.
Water Sources and Topography
The hydroelectric operation relies on water sourced from two primary bodies of water: Nedre Navervatn lake and Fykanvatn lake. Nedre Navervatn is situated approximately 465 metres (1,526 ft) above sea level, providing significant hydraulic head for power generation. This elevation difference is critical for the plant's efficiency, allowing water to flow through the turbines with substantial kinetic energy. The water from Nedre Navervatn is channeled to the main turbines, driving the primary generation units. In addition to this main source, the plant also utilizes water from Fykanvatn lake. This secondary source feeds a newer Francis generator, which adds to the plant's overall output. The integration of multiple water sources allows for flexible operation and maximizes the use of local hydrological resources.
Technical Configuration and Discharge
The plant houses a newer 2.4-megawatt (3,200 hp) Francis generator specifically designed to take water from Fykanvatn lake. This addition represents a modernization effort to enhance the plant's capacity and efficiency. The Francis turbine is a common choice for hydroelectric plants due to its versatility and efficiency across a range of heads and flows. The remaining capacity of the 120 MW total is attributed to the main generation units fed by Nedre Navervatn. After passing through the turbines, the water is discharged into the Glomfjorden. From the fjord, the water flows out into the Norwegian Sea, completing the hydrological cycle for the plant. This discharge pattern is typical for coastal hydroelectric facilities in Norway, where the fjords provide a natural outlet for the used water.
What is the technical configuration of Glomfjord power plant?
Glomfjord power plant operates as a hydroelectric facility utilizing water from local reservoirs to generate electricity. The plant draws its primary water supply from Nedre Navervatn lake, which is situated at an elevation of 465 metres (1,526 ft) above sea level. This significant head height contributes to the plant's energy generation capacity. The facility discharges its outflow into Glomfjorden, which subsequently connects to the Norwegian Sea. This hydrological path defines the plant's immediate geographical and operational context within Meløy Municipality.
Generator Specifications
The plant incorporates specific turbine technology to optimize power output. According to available technical data, the facility houses a newer Francis generator with a capacity of 2.4 megawatts (3,200 hp). This specific generator unit utilizes water from Fykanvatn lake, indicating a multi-source water intake strategy for the plant. The integration of the Francis turbine allows for efficient energy conversion from the water drawn from Fykanvatn.
Technical Parameters
| Parameter | Value |
|---|---|
| Primary Water Source | Nedre Navervatn lake |
| Secondary Water Source | Fykanvatn lake |
| Reservoir Elevation (Nedre Navervatn) | 465 metres (1,526 ft) |
| Francis Generator Capacity | 2.4 megawatts (3,200 hp) |
| Outlet | Glomfjorden |
| Final Discharge | Norwegian Sea |
The technical configuration relies on the elevation difference between the reservoirs and the outlet. The 465-metre elevation of Nedre Navervatn provides the necessary potential energy for hydroelectric conversion. The plant's design accommodates water from both Nedre Navervatn and Fykanvatn, with the latter specifically feeding the 2.4-megawatt Francis unit. The discharge into Glomfjorden and the Norwegian Sea completes the hydrological cycle for the facility.
History
The Glomfjord power plant was commissioned in 1920, marking a significant early development in the hydroelectric infrastructure of Nordland county, Norway. The facility is situated in the village of Glomfjord within Meløy Municipality. Its construction was designed by Olaf Nordhagen, who oversaw the engineering of the initial installation. The plant draws its primary water source from Nedre Navervatn lake, which is located approximately 465 metres above sea level. This elevation provides the necessary head for the hydroelectric generation process, with the water ultimately discharging into the Glomfjorden and subsequently the Norwegian Sea.
Initial Construction and Turbines
The initial phase of the plant featured a capacity of 20 megawatts, utilizing Pelton turbines to convert the hydraulic energy into electricity. These turbines were chosen for their efficiency in handling the specific head and flow characteristics of the water from Nedre Navervatn. The 1920 commissioning established the site as a key energy producer in the region, operated by Statkraft. The design by Olaf Nordhagen laid the foundation for the plant's long-term operational status, which has continued into the modern era. The initial infrastructure was robust enough to support the growing energy demands of the local municipality and surrounding areas.
Expansion in 1922
In 1922, the plant underwent an expansion with the addition of a third turbine. This enhancement increased the generating capacity and reliability of the Glomfjord power plant. The addition of the third turbine was a strategic move to optimize the water flow from Nedre Navervatn and improve the overall output of the facility. This early expansion demonstrated the scalability of Nordhagen's original design and the potential for further developments at the site. The plant continued to operate with these three Pelton turbines for a significant period, serving as a cornerstone of the local energy grid.
Over time, the plant has evolved to include newer technologies. A more recent addition is a 2.4-megawatt Francis generator, which takes water from Fykanvatn lake. This newer unit complements the original Pelton turbines, allowing for a more diversified and efficient use of the available water resources. The current total capacity of the Glomfjord power plant is 120 megawatts, reflecting the cumulative enhancements made since its inception in 1920. The integration of the Francis generator highlights the plant's adaptability and the ongoing efforts by Statkraft to modernize the facility while maintaining its historical significance.
Why it matters
Glomfjord power plant holds a distinct place in Norwegian energy infrastructure history as the holder of the record for the largest turbines in Norway until 1993. This status is defined by its configuration of 6 Pelton turbines, which collectively delivered a peak capacity of 120 MW. The plant’s ability to generate 120 MW from these specific turbine units established a benchmark for hydroelectric output in the region for several decades. The use of Pelton turbines indicates a design optimized for high-head hydroelectric generation, leveraging the significant elevation difference between the water sources and the outlet. The plant gets its water from Nedre Navervatn lake, which is located about 465 metres above sea level, providing the necessary hydraulic head to drive these large turbines efficiently.
Turbine Configuration and Capacity
The 120 MW capacity is achieved through the operation of 6 Pelton turbines. This specific arrangement of 6 units allows for flexible operation and maintenance scheduling while maintaining high output. The plant also houses a newer 2.4-megawatt Francis generator that takes water from Fykanvatn lake. This addition represents a secondary source of power generation within the same facility, supplementing the primary output from the Nedre Navervatn lake intake. The combination of the 120 MW from the Pelton turbines and the 2.4 MW from the Francis generator illustrates the plant’s multi-source hydroelectric design. The outlet of the plant is the Glomfjorden, which then flows into the Norwegian Sea, completing the hydrological cycle for the generated power.
Comparative Context with Svartisen
The significance of Glomfjord’s record is further understood through comparative context with the Svartisen power plant. Glomfjord held the title of largest turbines in Norway until 1993, implying that the Svartisen power plant or another facility surpassed this benchmark in or around that year. This transition in records highlights the evolution of hydroelectric technology and scale in Norway during the late 20th century. The 120 MW capacity of Glomfjord served as a key reference point for subsequent expansions and new constructions in the Norwegian grid. The plant remains operational, continuing to contribute to the energy mix in Nordland county. Its long-standing operation since its commissioning in 1920 demonstrates the durability and efficiency of its original design, particularly the 6 Pelton turbines that defined its historical significance. The plant is operated by Statkraft, a major player in the Norwegian energy sector, ensuring continued maintenance and optimization of the facility’s output.
Modernization and current operations
The operational profile of the Glomfjord power plant underwent significant structural and technical adjustments following the completion of the Svartisen power plant in 1993. The integration of Svartisen altered the hydrological and electrical dynamics of the region, necessitating changes to Glomfjord’s generation strategy to optimize output and grid stability. These operational shifts laid the groundwork for subsequent modernization efforts aimed at enhancing efficiency and adapting to evolving grid requirements.
Conversion to 50Hz Operation
A critical phase in the plant’s modernization involved the conversion to 50Hz operation. This technical adjustment was essential for synchronizing the plant’s output with the broader Norwegian and European continental grid, which operates predominantly at 50Hz. The conversion required substantial upgrades to the turbine-generator sets and associated electrical infrastructure, ensuring that the power delivered to the grid met the frequency standards necessary for stable transmission and distribution. This shift improved the plant’s integration into the regional energy network, allowing for more flexible power trading and load balancing.
Generator Removal and Turbine Installation
Around 2012, the plant underwent further simplification and modernization with the removal of generators 4 through 6. This decision was likely driven by the need to streamline operations, reduce maintenance complexity, and focus on higher-efficiency units. The removal of these older generators allowed for a more focused operational model, reducing the overhead associated with maintaining a larger number of aging units.
In 2013, the plant installed a new Francis turbine, marking a significant technological upgrade. This 2.4-megawatt (3,200 hp) Francis generator draws water from Fykanvatn lake, supplementing the primary water source from Nedre Navervatn lake, which is located approximately 465 metres (1,526 ft) above sea level. The installation of this newer turbine enhanced the plant’s capacity to harness energy from Fykanvatn, optimizing the use of local hydrological resources. The outlet of the plant continues to discharge into the Glomfjorden and subsequently into the Norwegian Sea, maintaining the established hydrological flow path.
Frequently asked questions
What is the installed capacity of the Glomfjord power plant?
The Glomfjord power plant has a total installed capacity of 120 MW. This figure represents the combined output of the facility's generating units. The plant is operated by Statkraft, a major energy company in Norway. The facility is classified as operational and continues to contribute to the regional energy grid in Nordland county. The 120 MW capacity is derived from the hydroelectric conversion of water from local reservoirs.
What type of technology and generators are used at Glomfjord?
The plant utilizes hydroelectric technology, harnessing water from Nedre Navervatn lake and Fykanvatn lake. The facility includes a Francis generator with a capacity of 2.4 MW (3,200 hp). This specific generator is noted as a newer addition to the plant's infrastructure. The water source for the main operations is Nedre Navervatn lake, which is located approximately 465 metres (1,526 ft) above sea level. The outlet for the plant's water discharge is the Glomfjorden, which then flows into the Norwegian Sea.
When was the Glomfjord power plant commissioned?
The Glomfjord power plant was commissioned in 1920. This places its initial operational history in the early 20th century, making it a long-standing energy infrastructure asset in Meløy Municipality. The plant has remained operational since its initial commissioning date.
Where is the Glomfjord power plant located?
It draws water from Nedre Navervatn lake and Fykanvatn lake. The discharge point for the plant is the Glomfjorden, leading to the Norwegian Sea. The location in Nordland county places it within the northern region of Norway, contributing to the local and national hydroelectric capacity.