Investing in Nepali Hydropower Stocks — Sector Guide

How hydropower companies make money

The revenue model is simple in concept and brutal in detail. The company builds a powerhouse, signs a long-dated PPA with NEA (typically 25–30 years), and sells every unit of electricity it generates at PPA tariffs that distinguish wet-season and dry-season rates. Wet-season tariffs are lower (typically around NPR 4.80/kWh) and dry-season tariffs are higher (around NPR 8.40/kWh), reflecting the fact that supply is plentiful in monsoon and scarce in winter.

The project lifecycle has four distinct phases: construction (no revenue, only capex and interest capitalisation), commissioning (first revenue, ramping to design output), the income-tax holiday window (usually the first 5–10 years post-commissioning, depending on the PPA), and mature operations (full tax exposure, ageing equipment, gradually rising O&M costs). Earnings are highest during the tax-holiday window and step down materially when it ends — most retail investors underestimate this transition.

Beyond electricity sales, larger hydropower groups generate income from project-development fees, EPC contracting for sister projects, and dividends from holdings in other hydropower companies. These ancillary streams are typically less than 10% of total revenue but matter for understanding the parent-subsidiary structure of the big hydropower groups.

What to look at when analysing a hydropower stock

• Installed capacity (MW) — the project's nameplate rating. A 25 MW project is fundamentally different from a 100 MW project even if both look similar on a per-share basis.
• Plant load factor (PLF) — the percentage of nameplate output actually generated over the year. A run-of-river plant in Nepal typically lands between 50% and 65%; anything sustainably above that is exceptional, anything below 45% suggests hydrology problems.
• PPA tariff structure — the actual NPR/kWh rates for wet and dry seasons. Older PPAs sometimes lock in less favourable tariffs that look fine today but compress badly with inflation.
• Debt-to-equity ratio — hydropower is capital-intensive, and most projects are 70:30 debt-financed. High D/E is normal during construction; the question is whether the post-commissioning cash flows comfortably cover the debt-service schedule.
• Project age and tax-holiday status — a project five years into a ten-year tax holiday is in a very different earnings phase than one with two years left.

On top of these, read the most recent generation report (usually published monthly by the company on its website or via NEPSE announcements). Year-on-year MWh comparisons in equivalent months are the cleanest signal of operational health.

Risks to watch

Five risks deserve attention. Hydrology — weak monsoons or shifting precipitation patterns directly reduce revenue. Geological risk — landslides and floods can damage civil works and force long shutdowns; recent examples include multiple project disruptions following the 2024 Melamchi floods. Transmission constraint — NEA's grid capacity has not kept pace with new generation; some projects are forced to back down output in wet season because the grid can't evacuate the power.

PPA renegotiation risk — though PPAs are contractual, the political appetite to renegotiate tariffs is real, particularly when tariffs are perceived to be 'too generous'. Subsidy and licence risk — some projects depend on government concessions (concessional royalty rates, tax holidays) that can change with the political cycle. Promoter dilution — many hydropower companies have repeatedly issued right-shares to fund completion overruns, diluting minority shareholders.

How hydropower moves with the wider NEPSE

Hydropower correlation with the NEPSE index is moderate — typically 0.6 to 0.7. The sector responds more to news flow specific to power (PPA terms, NEA payments, monsoon outlook, new project approvals) than to general market sentiment. In bull markets, hydropower often outperforms because it carries a 'growth story' that banking does not.

Within the sector, dispersion is wide. A single weather event, a single PPA dispute, or a single equity issuance can move one name 30% while the sector index barely budges. This is why hydropower is the sector where company-level research matters most — sector ETFs would be a poor substitute even if they existed.

Common mistakes when buying hydropower

The single most common mistake is buying a pre-operational project at a premium to par on the assumption that the project will commission on time and at design output. Construction overruns of two to four years are normal in Nepali hydropower, and design-output assumptions often miss real-world hydrology by 10–20%. A par-priced IPO that took five extra years to commission has effectively underperformed cash for those five years.

The second is ignoring the post-tax-holiday earnings cliff. A company that earned NPR 12 EPS during its tax-holiday years may earn NPR 7 EPS the year after the holiday expires — same operations, same revenue, but with a full income-tax bill. Always check when the tax holiday ends and model earnings under both regimes before deciding what the stock is worth.

Where to dig deeper