Norway’s water and energy regulator publishes two complementary weekly data products: a power-situation report and reservoir statistics. For week 40, 28 September to 4 October 2026, NVE reported national reservoir filling of 67.9%, unchanged from the previous week. Average weekly prices nevertheless differed substantially across the country’s five bidding zones.

The weekly average was 147 øre/kWh in the south-east (NO1), 156 in the south-west (NO2), 102 in central Norway (NO3), 30 in the north (NO4) and 142 in the west (NO5). Changes compared with week 38 were +12, +14, −5, −11 and +8 øre/kWh respectively. NVE linked lower prices in NO3 and NO4 to stronger Nordic wind output; wind generation in NO3 almost doubled from the preceding week.

In southern Norway, periods of low wind production on the continent contributed to higher prices. After maintenance in week 39 on the cable between NO2 and Germany, power flows toward Germany increased in week 40. Imports into NO1 from southern Sweden (SE3) also rose. NVE said net exports from southern Norway were somewhat higher over the week, while Norway’s total net exports remained broadly unchanged.

Lower prices contributed to reduced reservoir hydropower generation in NO3 and NO4. Nationally, both inflows and hydropower output fell, but higher wind generation lifted total Norwegian power production. Electricity consumption increased by a similar amount, which NVE said left net exports at about the previous week’s level. Reservoir filling is a stock measure; the prices are weekly averages by bidding zone.

The figures describe one week and are not a forecast of prices or supply security. NVE noted that European gas prices remained high, but their effect on electricity varies with how often fossil generation sets the marginal price. NO2 is particularly exposed to European prices through interconnectors. The reservoir reading and price series come from two separate NVE publications covering the same week; they are combined here so the weekly bulletin is not treated as two separate events.

Weekly averages do not show every intraday price movement and are not the same as retail tariffs paid by households. The øre/kWh figures are wholesale bidding-zone averages. NVE reports one week of observation; comparisons across periods also depend on season, interconnector availability and generation conditions.