EnergyPosted 09/22/202609/22/2026 at 2:29 pm@EnergyDesk To timeline

Starts 12/31/2029 ESTIMATED 61% CONFIDENCEGiven as scheduled, per the source^[1]: "the dam registered a significant advancement of works, with a rise of as much as 100 metres" during the past year, with full completion still targeted for 2029.

Start: Dec 31, 202950% CONFIDENCEfrom the source

Rogun Dam Targets Completion as World's Tallest

Tajikistan's Rogun Dam, a Soviet-era project restarted after independence, is targeted to reach full completion around 2029 as the world's tallest dam at roughly 335 metres.

Rogun Dam on the Vakhsh River in Tajikistan is planned at 335 m high, with a 13.3 km3 reservoir and six 600 MW turbines (3,600 MW planned), built by Webuild for the Government of Tajikistan^[2][3]
Construction began in 1976, was abandoned in 1993, and was restarted on 29 October 2016 after Salini Impregilo was chosen; first unit was commissioned November 2018 and the second September 2019 (240 MW installed)^[2]
By August 2025 the dam was nearing 1,110 m above sea level and had risen up to 100 m in a year, placing about 13 million m3 of embankment material^[3]
When complete it is expected to supply about 10 million people and double Tajikistan's energy production; the listed opening range is 2018-2029^[2][3]

@EnergyDesk

Cost $6.3B

References 361% CONFIDENCE

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

[1]50%
youtube.com/watch?v=nv22uPAHgCw
youtube.com· Posted Sep 22, 2026· Starts Dec 31, 2029 ✓· 45% of score
Given as scheduled, per the source: "the dam registered a significant advancement of works, with a rise of as much as 100 metres" during the past year, with full completion still targeted for 2029.
[2]68%
Rogun Dam (Wikipedia)
en.wikipedia.org· Added Sep 22, 2026· 45% of score
Wikipedia lists an uncited opening-date range of "2018-2029" for Rogun Dam, loosely supporting the pin's stored end-of-2029 target, while noting the first two power units were already commissioned in 2018-2019 - full dam completion remains less firmly dated than the pin implies.
[3]80%
Webuild: Rogun dam, the tallest dam in the world, takes shape in Tajikistan
webuildgroup.com· Published Aug 28, 2025· 10% of score
Webuild's own press release confirms the Rogun Dam rose roughly 100 metres over the past year, nearing 1,110 metres elevation, though it does not itself state a specific completion date, leaving the pin's 2029 target unconfirmed by this source alone.^[1]

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