The Export Dollar That Takes the Delhi Detour

The full numbers

Bhutan’s total public debt is approximately 107% of GDP (down from the 133.6% peak in FY 2021/22). Of this, 68-72% is INR-denominated, and the vast majority is Indian Government bilateral loans extended specifically to finance hydropower construction. The 13th FYP projects total debt to rise to 94.8% of GDP by 2029, with a planned USD 26 billion next wave of hydropower investment through 2040. The debt service ratio — the proportion of export earnings used to repay external debt — has averaged 35% over the past five years. In the worst year (FY 2021/22), it touched 39.2% of all exports. That means in a country whose exports are dominated by hydropower, more than a third of hydro export earnings flows straight back to Delhi as debt repayment. Even more striking: after debt-service deductions, legacy PPAs (Tala, Chhukha, Kurichhu, Basochhu) net only Nu 0.60–1.00/kWh to Bhutan. The country’s own industrial users pay Nu 1.60/kWh for the same electricity. Bhutan sells its hydropower to India at a lower net price than it sells the same kWh to its own factories. See paradox #51 for the full PPA value-extraction analysis.

The FX dimension. Beyond the headline debt-service drain, every PPA is denominated in INR with no USD-reference clause. The INR has lost ~85.5% of its USD value since Chhukha was commissioned in 1986 (Rs 12.61 → Rs 87.16 by end-2025). Cumulative realised USD-equivalent loss across all operational plants since their respective CODs: ~USD 1.85 billion (range 1.65–2.05bn), equivalent to roughly half of one year’s GDP gone — silently, through the FX channel alone. The peg-induced 1:1 BTN-INR optics make this loss invisible in Nu accounting. See paradox #62 and Bhutan Hydropower PPA INR Pricing Loss for the project-by-project ledger.

Imagine this

A village in Wangdue Phodrang celebrates the commissioning of a new hydropower project. The Prime Minister cuts the ribbon. The newspapers call it a milestone in Bhutan’s development. The project will earn the country roughly USD 100 million per year in export revenue. The villagers celebrate. What none of them mentions: about USD 35 million of that USD 100 million goes back to the Indian Exim Bank that financed the construction, every year for the next 25 years. Of the remaining USD 65 million, about USD 15 million is operating cost. The actual net retained by Bhutan is around USD 50 million — half of what they’re celebrating. If the project takes 18 years to build (PHPA-I-style), the interest accrued during construction has already eaten the first eight years of net revenue. The villagers will be celebrating retired engineers’ funerals before the country starts actually keeping the rent.

Where this came from

The Bhutan development model since the 1960s has been built around one trade: India finances dam construction in INR; Bhutan exports electricity to India in INR; the export revenue services the debt. It’s a closed loop — beneficial when the dams come online quickly and the export tariffs are favourable.

But the model assumes (1) construction on schedule, (2) tariffs that capture meaningful margin, and (3) a creditor willing to roll over. When any of those three slip, the country owes more than it earns from the same asset.

Why this matters now

The 13th FYP commits to 10 additional large hydro projects (Sankosh, Kuri-Gongri, Dorjilung, and seven others). At today’s pace and tariff structure, this commitment doubles the debt stock without proportionally increasing net retained revenue. The IMF-World Bank 2024 Debt Sustainability Analysis labels Bhutan at “moderate risk of debt distress” — and that’s before the next wave starts.

What it should be

• A country selling its main resource should be saving the rent, not bleeding it back to lenders.
• The export rent should fund a sovereign wealth vehicle that compounds across generations, while operational dam revenues fund maintenance and reinvestment.
• Debt service should be ≤15% of exports, not 35-40%.

How others do it

• Norway — built a USD 1.7 trillion sovereign wealth fund from oil exports. Every Norwegian citizen indirectly owns about USD 300,000 worth of fund assets. Public debt is about 35% of GDP.
• Saudi Arabia — accumulated sovereign reserves from oil exports rather than leaving the rent with foreign customers. Saudi Arabia owns about USD 600 billion of foreign assets and is debt-free at the central government level.
• Iceland — similar hydropower endowment to Bhutan. Public debt is ~50% of GDP — about half Bhutan’s level — and most of the dam rent flows into domestic services, not debt repayment.
• Paraguay — similar export-to-neighbour hydropower model with Brazil and Argentina. Debt service is significantly lower than Bhutan’s because Paraguay negotiated buy-back rights and equity participation.

The question we should be sitting with

Is hydropower making us rich, or making us a long-term tenant of our own resource? At what point does the next dam become not a triumph but an additional weight?