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The filing status of Landsvirkjun’s reservoirs was positive at the beginning of 2015. However, the spring melt period was poor this year and the overall inflow rate was below expectations.

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Weather conditions were much more favourable in September and the water balance in the reservoirs went from negative to positive. The water year, defined as the period from the 1 st of October to the 30 th of September, was considered ‘dry’ but the overall water levels of the reservoirs reached 92% at the end of the water year despite only measuring 70% at the beginning of September.

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A warm September

The month of September was very warm all over Iceland and the average temperature for the summer period in Iceland was above the average recorded over the last ten years. Warm weather conditions in early September had a substantial effect on inflow rates to the reservoirs and glacial melt levels improved. The highest ever daily average inflow rate to the Hálslón Reservoir was recorded on the 13th of September, measuring 620 m3/s. This is the highest recorded inflow level for the month of September since the reservoir became operational.

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A degree of flexibility is built into Landsvirkjun’s power contracts for some of its customers with allowances for a reduction of supply in poor water years. This allows us to offer a cost- effective electricity supply in our operations.

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Reductions to interruptible power withdrawn

Landsvirkjun informed its energy intensive industry and wholesale clients with flexible power contracts of a possible reduction to interruptible power on the 1 st of September but postponed the action at the beginning of October.

More information on possible reductions to interruptible power

More information on postponement of possible reductions to interruptible power

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