# Norway hydropower reservoir depletion

> Live situation record from CLSTR: https://clstr.news/situations/norway-hydropower-reservoir-depletion
> Updated: 2026-09-06T12:24:51.000Z. Sources: 7. Developments: 2.

Norway is experiencing critically low reservoir levels in its hydropower regions, driven by drought and low snow accumulation. In the Midt-Norge region, the Norwegian Water Resources and Energy Directorate (NVE) has implemented a new reporting scheme requiring producers to provide data and forecasts to Statnett to improve oversight of water resource management and energy security.

In the NO2 power region, reservoir filling degrees have reached a 30-year seasonal low, dropping to 45.9 percent. This level is noted to be lower than during the 1996 drought. Analysts have observed that since the commissioning of international interconnectors to Germany and the United Kingdom in 2021 and 2022, reservoir levels for similar amounts of rainfall have been approximately 10 to 20 percentage points lower than in previous decades. Critics suggest this trend is linked to hydroelectric power being increasingly produced for immediate market sale rather than being stored.

## Timeline

### 2026-09-06: Norway hydroelectric reservoirs hit 30-year seasonal low

Hydroelectric reservoir levels in Norway's NO2 region have hit a 30-year seasonal low, amid concerns that increased energy exports via new international cables are depleting reserves.

2 sources. https://clstr.news/cluster/norway-hydroelectric-reservoirs-hit-30-year-seasonal-low

### 2026-08-31: NVE introduces new reporting requirements for Midt-Norge hydropower producers

NVE is introducing new reporting requirements for hydropower producers in Midt-Norge to manage energy security amid record-low reservoir water levels and increased import dependency.

5 sources. https://clstr.news/cluster/nve-introduces-new-reporting-requirements-for-midt-norge-hydropower-producers

---
Cite as: Norway hydropower reservoir depletion. CLSTR, https://clstr.news/situations/norway-hydropower-reservoir-depletion
