Overview
The Andhi Khola Hydropower Station is an operational run-of-river hydroelectric power plant situated in the Syangja District of Nepal. As a key component of the nation's renewable energy infrastructure, the facility harnesses the natural flow of the Andhi River, which serves as a tributary to the larger Kali Gandaki River system. The plant is currently owned and developed by Butwal Power Company Limited, which operates as an Independent Power Producer (IPP) within the Nepalese energy sector. Technical assistance for the development of the station was provided by UMN, contributing to the engineering and operational frameworks that define the facility's output and efficiency.
The station has a installed capacity of 9.4 MW, generating an annual energy output of 68.38 GWh. This production level supports the regional and national grid demands, contributing to the stability of Nepal's electricity supply. The power generated is transmitted to the national grid via a 132 kV connection at the Rang Khola substation. From there, the electricity is primarily sold to the Nepal Electricity Authority, the principal utility provider in the country. The operational model of the Andhi Khola plant reflects a standard public-private partnership structure common in Nepal's hydropower sector.
Commissioned on 2052-01-08 BS, the plant has maintained continuous operation for several decades. The generation license for the facility is set to expire on 2101-12-30 BS. Upon the expiration of this license, ownership and operational control of the power station are scheduled to be handed over to the government of Nepal. This transition plan ensures long-term public benefit from the infrastructure investment made by Butwal Power Company Limited. The run-of-river technology employed at Andhi Khola minimizes the need for large reservoirs, allowing for a relatively low environmental footprint while maintaining consistent power generation aligned with the seasonal flow patterns of the Andhi River.
History and Development
The Andhi Khola Hydropower Station is a run-of-river hydroelectric facility situated in the Syangja District of Nepal. The plant utilizes the flow of the Andhi River, which serves as a tributary to the Kali Gandaki River. It is owned and developed by Butwal Power Company Limited, which operates as an Independent Power Producer (IPP) in Nepal. The project received technical assistance from UMN during its development phase. The station is connected to the national grid at 132 kV through the Rang Khola substation, supplying electricity to the Nepal Electricity Authority.
Operational Timeline and Capacity
The plant began generating electricity on 2052-01-08 BS. The generation license for the facility is set to expire on 2101-12-30 BS. Upon the expiration of this license, the plant is scheduled to be handed over to the government. The current installed capacity of the station is 9.4 MW. This capacity allows for an annual energy generation of 68.38 GWh. The operational status of the plant remains active.
Ownership and Licensing
Butwal Power Company Limited holds the ownership and development rights for the Andhi Khola Hydropower Station. As an IPP, the company manages the operational aspects of the facility. The licensing structure defines the period during which the company retains control of the asset. The handover to the government after the license expiration is a standard provision for such projects in the region. The technical collaboration with UMN supported the initial development and ongoing operations of the plant. The connection to the 132 kV grid ensures efficient transmission of the generated power to the national network.
Technical Specifications
The Andhi Khola Hydropower Station operates as a run-of-river hydroelectric facility, utilizing the natural flow of the Andhi River to generate electricity without a large reservoir. The Andhi River is a tributary of the Kali Gandaki River, providing the primary water source for the plant's operations. This run-of-river design allows the plant to harness the kinetic energy of the flowing water, converting it into electrical power with a consistent output profile characteristic of this technology type.
The plant has an installed capacity of 9.4 MW. This capacity enables the station to produce an annual energy output of 68.38 GWh. The generation license for the facility is set to expire on 2101-12-30 BS, after which ownership will be transferred to the government. The plant is owned and developed by Butwal Power Company Limited, which operates as an Independent Power Producer (IPP) in Nepal. Technical assistance for the project was provided by UMN.
The generated electricity is transmitted to the national grid through a 132 kV connection. The power station links to the grid via the substation at Rang Khola. The electricity is sold to the Nepal Electricity Authority, integrating the output into the broader national power supply system. The plant has been operational since 2052-01-08 BS.
Technical Parameters
| Parameter | Value |
|---|---|
| Entity Type | Hydroelectric Power Plant |
| Technology | Run-of-river |
| Water Source | Andhi River (tributary of Kali Gandaki River) |
| Installed Capacity | 9.4 MW |
| Annual Energy Generation | 68.38 GWh |
| Grid Connection Voltage | 132 kV |
| Connection Substation | Rang Khola |
| Off-taker | Nepal Electricity Authority |
| Operator/Owner | Butwal Power Company Limited |
| Commissioning Date | 2052-01-08 BS |
| Licence Expiry | 2101-12-30 BS |
Grid Connection and Power Sales
The Andhi Khola Hydropower Station is integrated into the national power infrastructure through a dedicated transmission link to the 132 kV national grid. This connection is facilitated via the Rang Khola substation, which serves as the critical interface between the plant’s generated power and the broader distribution network in Nepal. The selection of the 132 kV voltage level is standard for medium-sized hydroelectric installations in the region, allowing for efficient power transmission with manageable line losses over the distances typical of Nepal’s hilly terrain. The Rang Khola substation plays a vital role in stepping down or regulating the voltage as required by the grid operators, ensuring stable power delivery to downstream consumers and industrial users.
Commercially, the electricity generated by the plant is sold to the Nepal Electricity Authority (NEA), which acts as the primary off-taker for the project. As an Independent Power Producer (IPP), Butwal Power Company Limited operates the facility under a generation license that dictates the terms of power sales and grid integration. The agreement stipulates that the plant will continue to sell its output to the NEA until the generation license expires on 2101-12-30 BS. Following this date, ownership and operational control of the plant are scheduled to be handed over to the government, at which point the NEA will likely assume direct operational responsibility or adjust the purchase agreement accordingly.
The annual energy output of 68.38 GWh contributes to the reliability of the 132 kV grid segment, particularly during peak flow periods of the Andhi River. This consistent supply supports the load balancing efforts of the Nepal Electricity Authority, providing a stable baseload or peaking capacity depending on the seasonal variations of the run-of-river flow. The technical assistance provided by UMN during the development phase ensured that the grid connection infrastructure met the requisite standards for synchronization and power quality, minimizing disruptions to the national grid during the plant’s operational life.
What is the ownership and licensing structure?
The Andhi Khola Hydropower Station operates under the Independent Power Producer (IPP) model, a structure that has become central to Nepal's energy infrastructure development. In this framework, private entities finance, construct, and operate power generation facilities, selling the output to the national grid operator. The plant is owned and developed by Butwal Power Company Limited, which serves as the primary private investor and manager of the facility. This ownership model allows for specialized technical management and financial flexibility, distinct from direct government operation, while still integrating into the broader national energy system.
Butwal Power Company Limited leveraged external technical expertise to ensure the efficient design and operation of the run-of-river plant. The development was executed with technical help from UMN, a specialized engineering firm that provided critical support during the construction and commissioning phases. This collaboration between local ownership and international technical partners is a common pattern in Nepalese hydropower projects, aimed at mitigating risk and optimizing the 9.4 MW generation capacity. The technical assistance from UMN contributed to the plant's successful start of electricity generation on 2052-01-08 BS, establishing a reliable source of power for the region.
The operational rights of the Andhi Khola Hydropower Station are governed by a specific generation licence issued to Butwal Power Company Limited. This licence defines the period during which the private operator retains ownership and operational control over the facility. According to the licensing terms, the generation licence will expire on 2101-12-30 BS. This date marks the end of the private concession period, after which the plant will be formally handed over to the government of Nepal.
This handover mechanism is a key feature of the IPP model in Nepal, ensuring that public infrastructure eventually returns to state control after the private investor has recouped their capital and earned a return. The transition from private to public ownership is planned to occur seamlessly, with the government assuming full responsibility for the plant's operation and maintenance after the licence expiry. The current arrangement allows Butwal Power Company Limited to sell electricity to the Nepal Electricity Authority through the 132 kV national grid connection at the Rang Khola substation, providing a steady revenue stream during the concession period. The licensing structure thus balances private investment incentives with long-term public benefit, ensuring the Andhi Khola Hydropower Station remains a vital part of Nepal's energy mix for decades to come.
Significance
The Andhi Khola Hydropower Station serves as a critical component of Nepal’s decentralized hydroelectric infrastructure, specifically within the Syangja District. As a run-of-river facility, it leverages the natural flow of the Andhi River, a tributary of the larger Kali Gandaki River system, to contribute to the national energy mix. The plant’s operational status as an active generator underscores its role in stabilizing regional power supply, providing a consistent 9.4 MW of capacity to the grid. This output translates to an annual energy generation of 68.38 GWh, a significant contribution for a district-level installation in Nepal’s diverse topography. The electricity produced is sold to the Nepal Electricity Authority, integrating the plant into the broader national distribution network via the 132 kV transmission line connected through the Rang Khola substation.
Long-Term Operational Framework
A defining feature of the Andhi Khola project is its long-term licensing structure, which reflects the strategic planning of Nepal’s independent power producer (IPP) sector. The plant was developed by Butwal Power Company Limited with technical assistance from UMN, establishing a model for public-private collaboration in energy infrastructure. The generation licence, which commenced with the plant’s commissioning on 2052-01-08 BS, is set to expire on 2101-12-30 BS. This extended timeline ensures decades of stable operation and revenue generation for the private operator before the asset is handed over to the Nepalese government. Such long-duration licences are instrumental in attracting investment in Nepal’s hydro sector, offering investors security against short-term market fluctuations while guaranteeing eventual public ownership of the resource.
Regional Impact and Grid Integration
By connecting to the 132 kV national grid at Rang Khola, the Andhi Khola Hydropower Station enhances the reliability of power delivery to the surrounding regions. The run-of-river technology minimizes environmental disruption compared to reservoir-based dams, allowing for continuous generation that aligns with the seasonal flow patterns of the Andhi River. This operational model supports both energy production and potential downstream water usage, although the primary documented function remains electricity generation for the Nepal Electricity Authority. The plant’s continued operation through the end of the 21st century highlights its importance as a long-term asset in Nepal’s transition toward greater hydroelectric reliance.
See also
- Guri Dam: Engineering, Operations and Energy Security in Venezuela
- Seitevare Powerplant: Engineering and Operations
- Pumped-storage hydropower plants with underground reservoir: Influence of air pressure on the efficiency of the Francis turbine and energy production
- Aswan High Dam: Engineering, History and Regional Impact
- Kelly Ridge Powerplant: Engineering and Operations