Hydropower is Nepal's defining natural resource advantage. With an estimated potential of over 83,000 MW — of which less than 3,000 MW is currently developed — the sector represents both enormous long-term growth potential and unique investment characteristics that differ significantly from banking or manufacturing stocks.
Hydropower companies make up a significant portion of NEPSE listings, ranging from established generators already selling electricity to companies still in the construction phase with no revenue. Understanding how this sector works is essential for any NEPSE investor considering hydropower stocks.

Nepal's Hydropower Landscape

The Potential

Nepal sits on the southern slope of the Himalayas, with thousands of rivers and tributaries flowing from high altitudes to the Terai plains. This elevation drop combined with consistent glacial and monsoon water flow creates ideal conditions for hydropower generation.
  • Total estimated potential: 83,000+ MW (theoretical)
  • Economically feasible: approximately 42,000 MW
  • Currently developed: under 3,000 MW (roughly 3-4% of economically feasible potential)
This gap between potential and reality is what makes the sector attractive to long-term investors — there is decades of growth runway ahead.

The Current Reality

Despite the massive potential, Nepal still faces seasonal electricity shortages (dry season) and has only recently become a net exporter during wet season months. The country's electricity grid, transmission infrastructure, and financing mechanisms are still developing.

Types of Hydropower Projects

Understanding the project type is the first step in evaluating a hydropower stock.

Run-of-River (RoR)

Run-of-river projects divert water from a river through a channel or tunnel, pass it through turbines, and return it to the river downstream. They do not store water behind a dam.
Characteristics:
  • Lower construction cost relative to capacity
  • Faster to build (3-5 years typically)
  • Output depends heavily on river flow, which varies seasonally
  • Generate most power during monsoon (June-September) when rivers are full
  • Significantly reduced output during dry season (December-March)
  • Smaller environmental footprint
Most listed hydropower companies on NEPSE are RoR projects. This means their earnings are highly seasonal.

Storage/Reservoir Projects

Storage projects build a dam to create a reservoir, storing water to release as needed regardless of natural river flow.
Characteristics:
  • Much higher construction cost
  • Longer construction period (5-10+ years)
  • Can generate electricity year-round at near-full capacity
  • Extremely valuable during dry season when electricity demand exceeds supply
  • Command higher PPA rates for dry-season energy
  • Fewer are listed on NEPSE due to longer development timelines
Upper Tamakoshi (UPPER) is the most prominent storage/peaking project among listed companies, and its year-round generation capability sets it apart from most peers.

Peaking Run-of-River (PROR)

A hybrid between RoR and storage. These projects have a small daily storage (pondage) that allows them to generate more during peak demand hours (evening) and less during off-peak hours. They still depend on seasonal flows but can optimize generation timing within each day.

Power Purchase Agreements (PPAs)

The PPA is the single most important factor determining a hydropower company's revenue. It is a long-term contract between the hydropower developer and Nepal Electricity Authority (NEA), the government-owned utility that buys almost all domestically generated electricity.

How PPAs Work

  • The developer agrees to sell electricity to NEA at a fixed rate per kilowatt-hour (kWh)
  • The rate is set at the time of agreement and typically escalates slightly each year (2-3% annual escalation is common)
  • PPA duration is usually 25-35 years from the Commercial Operation Date (COD)
  • After the PPA expires, the project may revert to the government or negotiate a new agreement

PPA Pricing Structure

PPAs distinguish between two seasons:
Wet Season (approximately Baisakh to Ashwin / April to October):
  • Lower rate per kWh
  • Plenty of water available, high generation
  • NEA has surplus electricity during this period
Dry Season (approximately Kartik to Chaitra / November to March):
  • Higher rate per kWh (typically 20-50% more than wet season rate)
  • Scarce water, lower generation
  • NEA faces shortages, making dry-season energy more valuable
Typical PPA rates (these vary by project and year of agreement):
  • Older projects: NPR 4-6 per kWh
  • Recent projects: NPR 7-12 per kWh (wet season) and NPR 10-16 per kWh (dry season)
  • Rates have increased over time as NEA recognizes the need to incentivize development

Why PPA Rate Matters So Much

The PPA rate directly determines revenue. Unlike a bank that can increase lending rates or a manufacturer that can raise prices, a hydropower company is locked into its PPA rate for decades. A project with a PPA at NPR 5/kWh will earn dramatically less than an identical project with a PPA at NPR 10/kWh.
When evaluating hydropower stocks, always check:
  1. What is the PPA rate?
  2. What is the annual escalation percentage?
  3. How many years remain on the PPA?

Seasonal Earnings Pattern

This is unique to hydropower and catches many new investors off guard.

Monsoon Quarter (Shrawan-Bhadra / July-September): PEAK

Rivers are at maximum flow. RoR projects generate at or near full capacity. This is when most annual revenue is earned.

Post-Monsoon (Ashwin-Mangsir / October-December): DECLINING

Water levels start dropping. Generation decreases progressively. Revenue is moderate.

Dry Season (Poush-Chaitra / January-March): LOW

River flows are at their minimum. Many RoR projects operate at 20-40% of capacity. Despite higher per-unit PPA rates, total revenue is low due to much lower generation volume.

Pre-Monsoon (Baisakh-Ashadh / April-June): RECOVERING

Snow melt begins increasing river flow. Generation starts recovering before the full monsoon arrives.
Investment implication: Do not panic if a hydropower company reports a weak Q3 (Poush-Chaitra). That is normal seasonality. Compare quarterly results to the same quarter of the previous year, not to the previous quarter.

Key Metrics for Evaluating Hydropower Stocks

Installed Capacity (MW)

The maximum power output the plant is designed for. Bigger is not always better — what matters is how much of that capacity is actually utilized.

Annual Energy Generation (GWh)

Total electricity produced in a year, measured in Gigawatt-hours. This combines capacity with utilization and shows actual output.

Capacity Utilization Factor (CUF) or Plant Load Factor

The percentage of theoretical maximum generation actually achieved. A 10 MW plant operating 24/7 at full capacity for a year would produce 87.6 GWh. If it actually produces 50 GWh, its CUF is about 57%.
  • RoR projects typically achieve 40-60% CUF
  • Storage projects can achieve 60-80% CUF
  • Higher CUF = more efficient use of installed capacity = more revenue

PPA Rate and Escalation

As discussed above, this determines revenue per unit of electricity. Compare PPA rates across companies of similar vintage.

Debt-to-Equity Ratio

Hydropower projects are extremely capital-intensive. Most are financed with 70-80% debt (loans from banks/financial institutions) and only 20-30% equity. This means:
  • Interest payments consume a large portion of revenue in early years
  • As debt is gradually repaid, profitability improves dramatically
  • A project in its 5th year of operation will be far more profitable than in its 1st year (same revenue, less interest)

Net Profit and EPS Trajectory

For operating projects, watch the trend. Profit should increase each year as debt principal is repaid and interest burden decreases. Flat or declining profits in an operating project (outside of seasonal variation) is a red flag.

Major Listed Hydropower Companies

Chilime Hydropower Company (CHCL)

  • One of the oldest and most established hydropower stocks on NEPSE
  • Subsidiary of NEA
  • Multiple operating projects plus ongoing development
  • Consistent dividend payer
  • Considered a "blue chip" of the hydropower sector

Upper Tamakoshi Hydropower (UPPER)

  • Largest hydropower project in Nepal (456 MW)
  • Semi-storage type with year-round generation capability
  • Government majority owned (NEA subsidiary)
  • Massive debt being repaid from substantial revenue
  • Profit trajectory improving as debt reduces each year

Butwal Power Company (BPCL)

  • Diversified power company with multiple small and medium projects
  • One of the earliest listed hydropower stocks
  • Strong management track record
  • Relatively lower debt compared to newer projects

Api Power Company (API)

  • Smaller capacity project
  • Representative of the many sub-10 MW projects listed on NEPSE
  • Lower debt burden due to smaller project size
  • Steady but modest earnings

Construction-Phase Companies

Many listed hydropower companies are still building their projects. These include companies that raised capital through IPOs but have not yet started generating electricity. They carry significant risk:
  • No revenue until construction completes
  • Construction delays are common (geological issues, permit delays, labor problems)
  • Cost overruns may require additional capital raising
  • But if completed successfully, represent significant upside from zero revenue to full operation

The Debt Payoff Story

Understanding the debt cycle is crucial for hydropower investing:
Years 1-5 of operation: High debt payments, moderate to low profitability. Revenue goes mostly to banks.
Years 5-15: Debt gradually reduces. Each year, more revenue falls to the bottom line. EPS grows even without any increase in generation.
Years 15-25+: Most debt repaid. The project becomes a cash machine — low costs (just maintenance and staff), steady revenue from PPA, high profit margins.
This is why some investors buy hydropower stocks early in their operational life despite low current EPS, expecting the debt payoff to drive profit growth over the coming decade.

Government Policy and Growth Catalysts

Cross-Border Power Trade

Nepal has signed agreements to export electricity to India, and the cross-border transmission infrastructure is being developed. If Nepal can export its surplus wet-season energy to India at competitive rates, it would:
  • Reduce NEA's financial burden (currently NEA sometimes curtails generation during surplus periods)
  • Potentially allow better PPA rates for new projects
  • Open a massive export market for Nepal's electricity

Transmission Line Development

Many projects are delayed not by generation capacity but by lack of transmission lines to carry power from remote project sites to the national grid. Government investment in transmission infrastructure directly benefits hydropower generators.

Policy Frameworks

The government has periodically updated hydropower development policies, including:
  • Tax holidays for new projects
  • Streamlined environmental clearance processes (with varying effectiveness)
  • Incentives for projects in remote areas
  • Guidelines for foreign investment in the sector

Risks to Consider

Construction and Geological Risk

Nepal's terrain is challenging. Landslides, tunnel collapses, and geological surprises have delayed many projects and caused cost overruns. Until a project is complete and generating electricity, construction risk is significant.

Hydrological Risk

If rainfall patterns change due to climate effects, river flows may decrease. A project built based on historical flow data may underperform if future flows are lower.

Regulatory and PPA Risk

The government or NEA could change PPA terms, delay payments, or impose new regulations. NEA has historically had payment delays to generators, though this has improved.

Financial Risk (High Leverage)

With 70-80% debt financing, even a modest revenue shortfall can strain debt service. If a project takes longer to build and loans start coming due before revenue begins, the company faces serious financial pressure.

Currency and Interest Rate Risk

Most project loans are in NPR at floating rates. If interest rates rise significantly (as happened during tight monetary policy periods), interest costs increase and squeeze profits.

How to Think About Hydropower as a Long-Term Investment

Hydropower investing in Nepal is fundamentally a long-term proposition. These are 25-35 year assets with predictable (if seasonal) revenue streams and declining cost structures as debt is repaid.
The sector is suitable for investors who:
  • Have a 5-10+ year time horizon
  • Understand seasonal earnings variation and will not panic during dry quarters
  • Can evaluate project-specific risks (construction status, PPA terms, debt levels)
  • Want exposure to Nepal's most significant natural resource advantage
The sector may not suit investors who:
  • Need consistent quarterly dividends immediately
  • Cannot tolerate multi-year construction delays
  • Are looking for short-term trading gains (outside of speculative momentum)
  • Do not have the patience for the debt payoff cycle
Nepal's hydropower development is still in early innings. For patient, informed investors, the sector offers a rare combination of growth potential, predictable revenue (once operational), and improving profitability over time — characteristics not easily found elsewhere on NEPSE.