The Electricity Access Paradox in Bhutan

The electricity access paradox in Bhutan describes the counterintuitive situation in which one of the world's largest per-capita hydropower producers and a major electricity exporter nevertheless experiences seasonal power shortages, imports electricity from India during winter months, and faces a projected supply deficit by 2026. Bhutan's hydropower plants generated surplus electricity during the monsoon season, exporting up to 75–80 percent of production to India. But during dry winter months, when river flows drop dramatically, the same plants operate at a fraction of capacity, forcing Bhutan to purchase power back from Indian state electricity boards—often at higher cost than it receives for exports.

Generation and Export Profile

Bhutan's total installed hydropower capacity reached approximately 2,336 MW from completed projects as of 2024, with total generation capacity including newer additions approaching 3,490 MW by mid-2025. Hydropower accounts for over 99 percent of Bhutan's electricity generation. The Druk Green Power Corporation (DGPC), a wholly owned subsidiary of Druk Holding and Investments, operates the major generation facilities.^[1]

Electricity exports to India have historically constituted one of Bhutan's largest revenue sources. At peak export years (around 2017), approximately 81 percent of generation was exported. However, the export share has declined steadily—falling to 40 percent by 2022 and projected at 32 percent by 2025—as domestic demand has grown while generation capacity additions have lagged behind targets.^[2]

Hydropower export revenue for 2024 was projected at Nu 19.48 billion (approximately $220 million), with total electricity revenue including domestic sales at Nu 29.71 billion. This revenue stream is critical for debt servicing on the India-financed hydropower projects that account for over 60 percent of Bhutan's external debt.

The Winter Deficit

All of Bhutan's existing hydropower plants are run-of-river designs, meaning they depend directly on natural river flows without large storage reservoirs. During the monsoon season (June–September), abundant rainfall and glacial melt produce surplus generation. But during the lean period from December to March—with February typically the lowest—river flows decline dramatically. At minimum flow, Bhutan's plants can guarantee only 415 MW out of their total installed capacity, far below domestic demand.^[3]

During these months, Bhutan imports electricity from Indian state electricity boards, primarily the West Bengal State Electricity Board (WBSEB) and Assam State Electricity Board (ASEB), through distribution-level interconnections at border towns including Samtse and Samdrup Jongkhar.

The financial cost of winter imports has escalated sharply. The estimated cost for electricity imports surged by 203 percent in a single year, reaching Nu 8.28 billion. This figure was projected to escalate further to Nu 15.84 billion by 2025 and Nu 18.06 billion by 2026. The asymmetry is striking: Bhutan sells summer surplus at negotiated tariff rates (DGPC's bulk tariff was approximately Nu 1.34/kWh during 2022–2025), but must purchase winter power at rates that include seasonal premiums and are often higher than export prices.^[4]

Domestic Demand Growth

Bhutan's domestic electricity consumption has grown rapidly, driven by successful rural electrification (over 99 percent of households now have grid access), urbanization, transport electrification initiatives, expanding industries, and growing heating demand. Domestic consumption was projected to surge 232 percent by 2026, rising from Nu 8.27 billion to an estimated Nu 27.43 billion.^[5]

This trajectory means that domestic demand will outstrip available supply for much of the next decade, fundamentally altering the economic equation that underpins Bhutan's hydropower development model. The country will shift from being a consistent net exporter to a seasonal or even net importer of electricity, reducing the revenue available for debt servicing and public spending.

Rural Electrification Achievement

Paradoxically, one contributor to the supply crunch is a genuine success story. Bhutan expanded household electricity access from approximately 20 percent in 2003 to over 99.97 percent by recent estimates, connecting more than 8,500 rural households through a systematic rural electrification campaign supported by the ADB and other development partners. This achievement, while improving living standards, also created new demand that the generation infrastructure was not designed to serve at current capacity.^[6]

Tariff and Cost Structure

Domestic electricity tariffs in Bhutan have historically been kept low as a social policy. The Bhutan Power Corporation (BPC) purchases power from DGPC at regulated bulk rates and sells to consumers at subsidized retail tariffs. However, the widening gap between affordable domestic tariffs and rising power purchase costs—especially as more expensive winter imports substitute for cheaper domestic generation—has created financial pressure on BPC.

Both DGPC and BPC submitted tariff revision proposals to the Electricity Regulatory Authority (ERA) in December 2025 for the period July 2025 to June 2028. Tariff increases, combined with the introduction of a 5 percent Goods and Services Tax on electricity, are expected to raise consumer bills. The government faces a delicate balance between maintaining affordable power for households and ensuring the financial viability of the power sector.^[7]

Connection to the Debt Crisis

The electricity paradox is directly linked to Bhutan's foreign debt crisis. The debt was accumulated to build hydropower projects whose viability depends on export revenue. As domestic consumption absorbs an increasing share of generation, less electricity is available for export, reducing the revenue that services the debt. Meanwhile, the cost overruns and delays on major projects—particularly Punatsangchhu-I and Punatsangchhu-II—mean that capacity additions have come later and at higher cost than planned, compressing the timeframe during which export revenue exceeds debt obligations.

Analysts have warned that "the next eight to 10 years will be the most challenging period for Bhutan's energy security," with a turnaround expected only after 2032 when new hydropower and renewable energy projects are scheduled to come online.^[2]

Future Energy Diversification

Bhutan's theoretical energy potential extends well beyond existing hydropower. Studies estimate total hydropower potential at 36,888 MW, of which approximately 33 GW is techno-economically viable. Solar potential is estimated at 12,000 MW, wind at 761 MW, and biomass at 2,600 MW. The government's Energy Policy 2025 and Hydropower Master Plan set a target of 25,000 MW by 2040.

Several new projects are in various stages of development: Adani's 570 MW Wangchhu, Tata's 600 MW Kholongchhu, and Reliance's 500 MW solar farm. Together with ten hydropower projects slated in the 13th Five-Year Plan (aiming to add 3,119 MW), these could bring total capacity to approximately 5,500 MW over the next five years. Solar and wind development could also help address the seasonal mismatch, as solar generation peaks during dry winter months when hydropower is at its lowest—though significant investment in grid infrastructure and storage would be required.

Carbon-Negative Status

Bhutan is one of the few carbon-negative countries in the world, absorbing more carbon dioxide through its forests than it emits. However, the paradox threatens this status: winter electricity imports from India are generated partly from coal-fired power plants, meaning Bhutan's carbon footprint indirectly increases during the months it cannot generate sufficient clean power domestically. Maintaining the carbon-negative status while addressing energy security will require both domestic capacity expansion and continued investment in renewable alternatives.

See Also

Bhutan's Foreign Debt Crisis · Druk Holding and Investments · Hydropower in Bhutan

References

1. Bhutan's Hydropower Sector: 12 Things to Know — Asian Development Bank
2. Bhutan's power exports set to plunge as domestic energy demands outstrip supply — Asia News Network / Kuensel
3. What Bhutan's failed hydropower goal means for energy geopolitics — Dialogue Earth
4. Electricity tariff likely to go up as BPC and DGPC propose increases — The Bhutanese
5. Bhutan's domestic electricity consumption to outstrip production by 2026 — Asia News Network / Kuensel
6. Bringing Power to Bhutan's Villages and Beyond — Asian Development Bank
7. 5% GST and Tariff revision will mean higher power bills — The Bhutanese