Name: Ankhu Khola-1 Hydropower Station
Address: NP

Overview

The Ankhu Khola-1 Hydropower Station is an operational run-of-river hydroelectric power plant situated in the Dhading District of Nepal. As a key component of the nation's renewable energy infrastructure, the facility utilizes the natural flow of the Ankhu River to generate electricity. The Ankhu River serves as a tributary to the larger Trishuli River system, providing the consistent water source required for the plant's generation capabilities. The station is designed to harness this hydraulic energy without the need for extensive reservoir storage, characteristic of run-of-river technology, which allows for a relatively low environmental footprint while maintaining steady power output.

The plant has an installed capacity of 8.4 MW, contributing to the regional and national power supply. It is owned and developed by Ankhu Jalvidut Co. Pvt. Ltd., which operates as an Independent Power Producer (IPP) within the Nepalese energy sector. The facility began its commercial generation phase on 2070-05-08 BS (Bikram Sambat), marking the start of its operational lifecycle. The generated electricity is fed directly into the national grid, where it is purchased by the Nepal Electricity Authority, ensuring distribution to consumers across the country.

The operational framework of the Ankhu Khola-1 Hydropower Station includes a defined concession period. The generation licence is set to expire on 2101-08-25 BS. Upon the expiration of this licence, ownership and operational control of the plant are scheduled to be handed over to the government of Nepal. This transition model is common for many independent power projects in the region, allowing private investment in infrastructure development followed by public sector management in the long term. The plant remains a functional asset in Dhading District, supporting the energy demands of the local area and the broader Nepalese grid.

Technical Specifications

The Ankhu Khola-1 Hydropower Station operates as a run-of-river hydroelectric facility, a design choice that leverages the natural flow of the Ankhu River without requiring a large reservoir for storage. This operational model is characteristic of many hydropower projects in Nepal, where the topography allows for significant head generation while minimizing land acquisition and environmental displacement compared to reservoir-based dams. The plant draws its primary water source from the Ankhu River, which serves as a tributary to the larger Trishuli River system. This hydrological connection is critical for the consistency of the water supply, ensuring that the flow rate remains sufficient to drive the turbines during peak seasonal variations.

The installed capacity of the station is 8.4 MW, a scale that classifies it as a mini-hydropower plant within the national grid context. This capacity is generated by converting the kinetic energy of the flowing water into electrical energy, which is then fed directly into the national grid. The electricity produced is sold to the Nepal Electricity Authority, serving as a key independent power producer (IPP) contribution to the regional energy mix. The run-of-river mechanism implies that the generation output is directly proportional to the instantaneous flow of the Ankhu River, making the plant's output somewhat variable depending on seasonal rainfall and snowmelt patterns in the Dhading District.

Key Technical Parameters

Parameter	Value
Plant Type	Run-of-river
Installed Capacity	8.4 MW
Water Source	Ankhu River (Tributary of Trishuli River)
Location	Dhading District, Nepal
Grid Connection	National Grid (Nepal Electricity Authority)
Operator	Ankhu Jalvidut Co. Pvt. Ltd

The technical design prioritizes efficiency in water usage, typical for run-of-river schemes where the penstock length and head height are optimized to maximize the 8.4 MW output. The plant's integration into the national grid requires stable voltage and frequency regulation, managed through the turbine-generator sets operated by Ankhu Jalvidut Co. Pvt. Ltd. The reliance on the Ankhu River's flow means that maintenance schedules and operational adjustments are often aligned with the hydrological calendar of the Trishuli basin, ensuring optimal performance during high-flow seasons.

Ownership and Operation

The Ankhu Khola-1 Hydropower Station is owned and developed by Ankhu Jalvidut Co. Pvt. As the primary operator, the company manages the run-of-river facility located in Dhading District, overseeing the conversion of water flow from the Ankhu River—a tributary of the Trishuli River—into electricity. The plant has a total installed capacity of 8.4 MW, which is fed into the national grid for distribution. The operator is responsible for the day-to-day management of the station, ensuring that the generated power meets the technical and contractual requirements set by the national utility.

Electricity produced at the Ankhu Khola-1 Hydropower Station is sold to the Nepal Electricity Authority (NEA), which serves as the primary off-taker for the project. This commercial arrangement is typical for IPPs in Nepal, where private developers finance, construct, and operate the infrastructure, while the state-owned NEA handles transmission, distribution, and retail sales to end-users. The plant began generating electricity on 2070-05-08 BS, marking the start of its operational contribution to the national grid. Since its commissioning, the facility has maintained its status as an active contributor to Nepal’s renewable energy mix, leveraging the consistent flow of the Ankhu River to provide a stable power supply.

Concession and Future Handover

The operational model of the Ankhu Khola-1 Hydropower Station includes a defined concession period, after which ownership will transition from the private operator to the government. Upon the expiration of this licence, the plant is scheduled to be handed over to the government, a common feature in Nepal’s hydropower development framework designed to ensure long-term public benefit from natural resources. This handover process implies that Ankhu Jalvidut Co. Pvt. Ltd will retain operational control and revenue rights until the specified date, after which the state will assume full ownership and potentially continue operation or re-tender the management rights. This structure provides investors with a predictable timeframe for return on investment while securing eventual public control over the infrastructure.

Timeline and Licensing

The operational timeline of the Ankhu Khola-1 Hydropower Station is defined by its commissioning in the Nepali calendar year 2070 BS and a long-term generation licence extending into the 22nd century. The facility began generating electricity on 2070-05-08 BS, marking the start of its commercial operation as an independent power producer (IPP). This date signifies the point at which the plant was formally connected to the national grid and started selling electricity to the Nepal Electricity Authority. The licensing framework for the plant is structured around a specific expiry date for the generation rights, after which ownership and operational control are scheduled to transition from the private developer to the state.

Licence Duration and Government Handover

This licence period covers the initial decades of the plant's operational life, during which the Ankhu Jalvidut Co. Pvt. Ltd. retains ownership and development rights. Upon the expiry of the licence in 2101 BS, the plant is scheduled to be handed over to the government of Nepal. This handover mechanism is a common feature in Nepal's hydropower sector, allowing private entities to finance and construct infrastructure while ensuring long-term public ownership. The transition from private IPP to government asset occurs after the licence period concludes, ensuring that the 8.4 MW run-of-river facility becomes a state-held resource. The licence duration spans over three decades, providing the operator with a stable period to recoup investments and manage the plant's integration with the Trishuli River tributary system.

Year (BS)	Event
2070-05-08	Plant started generating electricity and connected to the national grid.
2101-08-25	Generation licence expires; plant handed over to the government.

What is the significance of Ankhu Khola-1 in Nepal's energy sector?

The Ankhu Khola-1 Hydropower Station serves as a functional component of Nepal’s decentralized energy infrastructure, specifically within the Dhading District. As a run-of-river facility with an installed capacity of 8.4 MW, the plant contributes to the national grid by harnessing the flow of the Ankhu River, which is a tributary of the larger Trishuli River system. This operational model is characteristic of Nepal’s broader hydropower strategy, which leverages the country’s topographical diversity to generate electricity without the need for massive reservoirs, thereby minimizing land acquisition and ecological displacement compared to storage schemes.

Role in the National Grid and IPP Dynamics

Pvt. This structure is significant as it illustrates the reliance on private sector investment to supplement state-owned generation assets. The electricity generated is sold to the Nepal Electricity Authority (NEA), the primary state-owned utility responsible for transmission and distribution. This transactional relationship underscores the hybrid nature of Nepal’s power sector, where private generation feeds into a centralized national grid, enhancing supply reliability for downstream consumers. The plant commenced generation on 2070-05-08 BS, marking its entry into the active supply chain during a period of expanding grid connectivity in central Nepal.

Long-Term Asset Lifecycle and Government Handover

A defining feature of the Ankhu Khola-1 project is its structured lifecycle, which includes a specific handover mechanism. Upon this expiration, the plant is scheduled to be handed over to the government. This model reflects a common policy framework in Nepal’s hydropower sector, designed to attract private capital for construction and initial operation while ensuring long-term public ownership of the energy asset. This approach mitigates long-term revenue risk for the state while providing investors with a defined period of return on investment. The transition from private operation to government ownership represents a strategic planning element that balances immediate infrastructure needs with future public utility control.

Regional Impact in Dhading District

Located in the Dhading District, the Ankhu Khola-1 station contributes to the regional energy mix, utilizing local hydrological resources. The use of the Ankhu River, a tributary of the Trishuli, highlights the exploitation of secondary river systems to diversify generation sources beyond the main stem rivers. This localized development supports the broader goal of energy accessibility and economic activity in the Dhading region, providing a consistent power source that integrates into the wider national network. The operational status of the plant remains active, continuing to deliver 8.4 MW of capacity to the grid, thereby supporting the steady-state energy demand of the surrounding areas and contributing to the overall stability of Nepal’s renewable energy portfolio.

How does the run-of-river technology work at Ankhu Khola-1?

The Ankhu Khola-1 Hydropower Station operates as a run-of-river hydroelectric facility, a design choice that fundamentally shapes its interaction with the natural hydrology of the Dhading District in Nepal. Unlike large reservoir-based systems that rely on extensive damming to store vast quantities of water for flexible generation, the run-of-river mechanism utilized here depends primarily on the continuous natural flow of the Ankhu River. This river serves as a tributary to the larger Trishuli River, providing the consistent water volume necessary to sustain the plant's 8.4 MW electricity generation capacity.

In a typical run-of-river configuration, water is diverted from the main river channel through an intake structure and channeled via a penstock or canal to the powerhouse. The Ankhu Khola-1 plant harnesses the kinetic energy and head difference of the flowing water to drive turbines, converting mechanical energy into electrical power. This method minimizes the surface area of water exposed to evaporation and reduces the land footprint compared to reservoir dams, making it particularly suitable for the topographical characteristics of the Nepalese hills. The system does not store significant volumes of water for long-term regulation; instead, it generates power in near-real-time as water passes through the system.

Operational Implications of the Run-of-River Design

The reliance on the natural flow of the Ankhu River means that the generation profile of the 8.4 MW plant is closely tied to seasonal variations in precipitation and snowmelt in the catchment area. During peak flow seasons, the plant can operate at or near its full capacity, maximizing the electricity sold to the Nepal Electricity Authority. Conversely, during dry periods, the flow rate may decrease, potentially reducing the instantaneous power output unless the design includes minor balancing reservoirs or weirs to regulate the intake. This operational characteristic distinguishes it from pumped-storage or large-dam hydro plants that can modulate output independently of immediate inflow rates.

The plant's operational lifecycle is also defined by its status as an Independent Power Producer (IPP). Pvt. Ltd., the facility began generating electricity on 2070-05-08 BS. The generation license is set to expire on 2101-08-25 BS, after which the infrastructure will be handed over to the government. This long-term concession period allows the private operator to recover investments and maintain the run-of-river infrastructure, ensuring that the diversion structures, penstocks, and turbines remain functional to capture the energy from the Ankhu River's flow for over three decades. The electricity generated is fed directly into the national grid, contributing to Nepal's renewable energy mix without the need for extensive water storage infrastructure.

Why it matters

The Ankhu Khola-1 Hydropower Station serves as a critical infrastructure asset for the Dhading District in Nepal, contributing directly to the local energy mix through its 8.4 MW capacity. As a run-of-river hydro-electric plant, it utilizes the flow from the Ankhu River, which is a tributary of the Trishuli River, to generate electricity. This specific technological approach allows for consistent power generation while maintaining the natural flow regime of the river system, which is a common strategy in Nepal's hydropower landscape. Pvt. This ownership structure highlights the role of private investment in expanding the country's renewable energy infrastructure.

Operational and Economic Framework

The generated electricity is sold to the Nepal Electricity Authority, providing a steady revenue stream for the operator and a reliable power source for the region. After this date, the plant is scheduled to be handed over to the government, ensuring long-term public benefit from the infrastructure investment. This transition model is a key feature of Nepal's hydropower development strategy, balancing private sector efficiency with public ownership over time.

Role in Nepal's Hydropower Landscape

As part of the broader network of hydroelectric plants in Nepal, the Ankhu Khola-1 station contributes to the country's goal of leveraging its water resources for energy security. The connection to the national grid facilitates the distribution of power beyond the immediate locality, supporting regional stability. The plant's operational status remains active, continuing to provide renewable energy to the grid. Its development by a private IPP underscores the importance of diverse ownership models in accelerating hydropower projects in Nepal. The specific location in Dhading District also aids in decentralizing energy production, reducing transmission losses and enhancing local economic resilience through job creation and infrastructure development.

Ankhu Khola-1 Hydropower Station