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.
Sources place the new dam's completion in 2025 - some reporting it already in operation by autumn 2025 - with the powerplant's full restart following in 2026; no single confirmed completion date was found.
Swissdams (in French) states KWO is replacing the dam "de 2019 à 2025" (from 2019 to 2025), corroborating a 2025 completion target close to the pin's stored 31 December 2025 date.
Implenia, a contractor on the project, gives an October 2025 completion in its facts summary but a 2026 target in its narrative text - an ambiguity the reference itself flags, consistent with the pin's lower "estimated" confidence and its own note that no single confirmed date was found.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.