Serious construction incident — suspected methane release during tunnel excavation
A hydroelectric project in Sikkim that experienced a serious construction incident in 2026, suspected to be a methane release during tunnel excavation.
Location
Sikkim, India
2026 incident
Suspected methane release during tunnel excavation
Sources & verification
Reported — Published by a named third-party source and not independently confirmed by HEF.
Sources
Regional geological risk reporting (2026)
Data as of
Last verified
· HEF Research Desk
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Compiled by HEF from publicly reported sources. This entry reflects public reporting, not HEF's own field research or verification beyond the cited source.
