Hydropower Debt Crisis in Bhutan

Bhutan's hydropower debt crisis refers to the accumulation of substantial external debt — exceeding USD 2.4 billion — owed almost entirely to the Government of India for the financing of large hydropower projects. Hydropower-related borrowing accounts for approximately 80 percent of Bhutan's total external debt and has pushed the country's debt-to-GDP ratio above 100 percent at various points, one of the highest levels in South Asia. While the debt is classified as "self-liquidating" because the completed power plants generate export revenue to service it, the severe delays and cost overruns at the Punatsangchhu projects have created a situation where debt obligations are accumulating faster than revenue, raising fundamental questions about the sustainability of Bhutan's hydropower-dependent economic model.^[1]

The crisis is not a typical sovereign debt emergency — Bhutan is not at risk of default in the conventional sense, because the creditor is a single friendly government (India) with strong strategic interests in maintaining the bilateral relationship. However, the scale of the debt relative to Bhutan's tiny economy (GDP of approximately USD 2.5-3 billion) constrains fiscal space, limits policy autonomy, and deepens the country's economic dependence on India in ways that many Bhutanese economists, policymakers, and citizens find concerning.

Origins of the Debt

Bhutan's hydropower debt has its roots in the bilateral financing model established with the Chhukha Hydropower Plant in the 1970s and 1980s. Under this model, India provides financing for hydropower construction in Bhutan, and Bhutan repays through a combination of electricity exports at agreed tariff rates and direct debt service payments. The model was initially generous: Chhukha and Tala were financed on a 60:40 grant-to-loan basis, meaning that the majority of the construction cost was borne by India as a grant, with only 40 percent constituting a repayable loan.^[2]

The terms shifted significantly with the 2008 intergovernmental agreement, under which the grant-to-loan ratio was changed to 30:70 for new projects including Mangdechhu and the two Punatsangchhu plants. This meant that 70 percent of the construction cost of new projects would be financed through loans, substantially increasing the debt generated by each new plant. The 2008 agreement was part of a broader framework committing India to help Bhutan develop 10,000 MW of hydropower by 2020.^[3]

Scale of the Debt

By the mid-2020s, Bhutan's total external debt has exceeded USD 2.8 billion, of which hydropower-related debt constitutes the overwhelming majority. The debt-to-GDP ratio has fluctuated between 90 and 120 percent, depending on the year and the exchange rate, placing Bhutan among the most indebted countries in Asia relative to its economic size.

The largest single component of the hydropower debt relates to the Punatsangchhu projects, whose combined cost has roughly tripled from original estimates due to geological problems and construction delays. Because these projects have not yet been commissioned, they are not generating any revenue to offset their debt service costs. Bhutan has been paying interest on the Punatsangchhu loans for over a decade while receiving no return — a situation that has significantly strained public finances.

The debt from the operating plants — Chhukha, Tala, Kurichhu, and Mangdechhu — is being serviced from electricity export revenues and is generally considered manageable. The crisis is concentrated in the non-performing loans from the delayed Punatsangchhu projects, which represent a deadweight fiscal burden until the plants are eventually commissioned.

Economic Impact

The hydropower debt burden has several important consequences for Bhutan's economy. First, it constrains the government's fiscal space by committing a large share of public revenues to debt service rather than development spending. Interest payments on hydropower loans absorb a significant portion of the government budget, reducing the resources available for health, education, and poverty reduction.

Second, the debt deepens Bhutan's economic dependence on India. Because virtually all of the debt is owed to India and virtually all of the electricity is exported to India, Bhutan's economic fortunes are tightly bound to the bilateral relationship and to India's willingness to purchase power at favourable tariff rates. This dependency limits Bhutan's policy autonomy and makes the country vulnerable to shifts in Indian energy policy — for instance, India's growing investment in domestic solar and wind energy could eventually reduce its demand for Bhutanese hydropower.

Third, the concentration of economic activity and government revenue in a single sector — hydropower — creates structural vulnerabilities. Bhutan's economy is heavily dependent on a commodity (electricity) whose production is seasonal and whose price is set through bilateral negotiation rather than market mechanisms. This lack of economic diversification is a recurring concern in analyses by the World Bank, the International Monetary Fund, and Bhutanese economists.

The "Self-Liquidating" Argument

The Bhutanese and Indian governments have consistently argued that hydropower debt is "self-liquidating" — that is, the completed power plants generate sufficient revenue through electricity exports to service and eventually repay the loans. Under this logic, the debt should not be a cause for concern because it is backed by productive assets. This argument holds for the operating plants, whose export revenues do exceed their debt service costs.

However, critics point out that the self-liquidating argument breaks down when projects suffer severe delays and cost overruns. A plant that was expected to start generating revenue in 2016 but does not commission until 2028 accumulates over a decade of interest payments without any offsetting income. Moreover, the vastly increased cost means that the debt service burden of the eventual plant will be far higher than originally projected, while the tariff rate — which determines the revenue — may not be sufficient to cover the inflated costs within a reasonable timeframe.

The Punatsangchhu experience has demonstrated that the self-liquidating model carries significant risk. If geological conditions, construction challenges, or other factors cause a project to dramatically exceed its budget and timeline, the resulting debt can become a net burden on the economy rather than a self-financing investment.

Debt Renegotiation and Relief

Bhutan has periodically sought and obtained adjustments to its hydropower debt terms from India. These have included extensions of repayment periods, deferral of interest payments during construction delays, and, in some cases, the conversion of portions of loans to grants. India has generally been receptive to these requests, reflecting the strategic importance of the bilateral relationship and India's interest in maintaining Bhutan as a cooperative hydropower partner.

In 2020, India agreed to a significant restructuring of the Punatsangchhu-I loan terms, including an extension of the moratorium period and a reduction in the effective interest rate. These adjustments provided some fiscal relief but did not fundamentally alter the scale of the debt obligation. Similar adjustments have been discussed for other projects.

Broader Implications

The hydropower debt crisis has prompted broader reflection in Bhutan about the country's development model. Some economists and policymakers have argued that Bhutan needs to diversify its economy away from hydropower dependence, investing instead in tourism, agriculture, information technology, and other sectors that can generate growth without accumulating large external debts. Others contend that hydropower remains Bhutan's most valuable natural resource and that the answer lies in better project management and risk assessment rather than abandoning the sector.

The crisis has also raised questions about the equity of the bilateral financing arrangements. Critics in Bhutan have argued that India benefits disproportionately from the hydropower relationship — obtaining cheap, clean electricity for its northern grid — while Bhutan bears the financial risks of construction delays and cost overruns. Calls for more favourable tariff rates, higher grant shares, and greater Bhutanese control over project management have become more prominent in public discourse.

The intersection of hydropower debt with the philosophy of Gross National Happiness presents a particular tension. GNH emphasises sustainable development, environmental conservation, and good governance — principles that sit uneasily with the accumulation of massive debt for large infrastructure projects that have experienced governance failures and environmental impacts. Reconciling Bhutan's distinctive development philosophy with the economic realities of hydropower debt remains one of the most important policy challenges facing the kingdom.