Indicator 2.2 monitors the sound environment, with the average measure being the equivalent sound level at the Þeistareykir power plant.

The equivalent sound level at Þeistareykir was around 51-52 dB for most months of the year but exceeded 55 dB in September and November. However, the equivalent sound level never exceeded the limit values for industrial areas, which is 70 dB. The increase in the equivalent sound level in September was due to a machine shutdown and the blowing of 11 holes during that period.