Switzerland’s glaciers are losing an astonishing amount of ice. See the meltdown.

Dry winters and a warming climate are taking a toll on centuries-old ice in the Alps, researchers say, with about 20 percent of Swiss glacial ice melting since 2021.

In March 2026 the Swiss Federal Office for the Environment reported that glaciers in the Alps lost 2.8 cubic kilometers of ice in 2026 alone, pushing the cumulative loss since 2021 to roughly 20 percent of the nation’s glacial volume. The figure comes from GLAMOS, the Swiss glacier monitoring network, which combines satellite imagery with ground stakes on 120 glaciers. Researchers at ETH Zurich noted that the 2026 melt rate exceeded the previous record by 35 percent, driven by a winter with less than 30 percent of average snowfall and summer temperatures 2.2 °C above the 1981‑2010 norm. The lost ice equals about 560 million metric tons of water, enough to fill Lake Geneva twice.

The decline in glacier‑fed runoff is expected to cut summer hydropower output by about 1.2 terawatt‑hours in 2026, according to Axpo’s forecast. That shortfall could push the wholesale electricity price up by roughly 4 percent in the third quarter. For an average Swiss household consuming 4,500 kWh yearly, the price rise would add about 6 CHF to the monthly bill. No other sector is projected to feel the effect as directly.

Since the end of the Little Ice Age around 1850, Swiss glaciers have shed roughly half of their total ice volume, with the pace of loss averaging about 1 percent per year until the early 2000s. The period from 2021 to 2026 marks the fastest five‑year decline in the instrumental record, surpassing the 2003‑2008 spike by a factor of two. Glaciologists at the Swiss Federal Institute for Forest, Snow and Landscape Research warn that the current trajectory could leave fewer than 30 percent of today’s glaciers by 2050 if emissions follow the middle‑of‑the‑road scenario. This shift also alters the seasonal timing of river flows, which has already moved peak discharge upstream by two weeks in the Rhine basin.

The Swiss Federal Office for the Environment will publish its updated glacier‑mass‑balance report on 15 September 2026, which will include the first satellite‑derived measurements from the new Sentinel‑3C constellation. Analysts expect the report to revise the 2026 loss upward by as much as 12 percent after correcting for earlier snow‑cover underestimation. Meanwhile, the parliament’s Committee on Energy and the Environment is scheduled to debate a proposal on 10 June 2026 to incentivize pumped‑storage hydropower as a buffer against runoff variability. If adopted, the measure could offset up to 0.4 terawatt‑hours of the projected shortfall, a figure that rivals the annual output of a medium‑sized nuclear plant.