Spring Flood 2026 — Why the Snow Deficit Worries the Power Market
Every spring, Nordic hydropower reservoirs fill up with meltwater from the mountains and forests. But spring 2026 is not a typical spring.
A historic low in snowpack
Mountain snow is at its lowest level in ten years. With both snow and ground-stored water in short supply, inflow to the reservoirs is weaker — and it is exactly that refill that normally pushes electricity prices down in early summer.
Hydropower — the most important price driver in the Nordics
Hydropower accounts for roughly half of all electricity generation in the Nordic region. Producers hold back water when prices are low and release more when demand rises. A weaker spring flood means:
- Reservoirs refill more slowly than normal
- Producers release water more cautiously
- The Nord Pool system price stays elevated
Right now the system price sits around 55–65 öre/kWh — clearly above levels seen at the same point in 2025.
What is happening with spot prices in April and May?
The first weeks of April 2026 have shown a classic spring pattern: cheap midday hours when solar and wind dominate, but sharp morning and evening peaks. In SE4 (Malmö) the price hit 121 öre/kWh on 31 March. Just a few days later, on 5 April, SE4 also logged the cheapest hour of the year. Hour-to-hour variation remains large.
In Norway the north-south gap is extreme. Markets are pricing May at around 56 öre/kWh in NO1 and NO2, but only 8–19 öre/kWh in NO3 and NO4. Grid bottlenecks mean the snow deficit hits southern Sweden and southern Norway hardest.
How to act this spring
1. Run heavy loads around midday. Solar output pushes prices down between 10:00 and 15:00 in southern Sweden. 2. Avoid 07–09 and 17–21. Morning and evening peaks get sharper when hydrology is weak. 3. Watch the forecast week by week. A rainy week can flip the picture — hydrology responds faster than most people expect. 4. Enable price alerts. When the spot price drops below your threshold, you get a push notification instantly.
Looking toward summer
Futures for Q3 2026 are trading around 38–43 öre/kWh — the market still expects a summer dip, but with more uncertainty than usual. A dry summer could make August and September the most expensive in years.
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