Hellisheidi Geothermal Plant is in the Southwest Iceland’s Hengill area, an active volcanic ridge connected with three volcanic systems. At least three volcanic eruptions have occurred in the Hengill area in the last 11.000 years. The most recent eruption was 2.000 years ago.

Of the six geothermal power plants in Iceland, Hellisheidi (pronounced “het-lis-hay-thee”) is the newest and largest.

The Hengill area is part of the Hengill region, which covers 112 sq km (43 sq mi) and is one of the most extensive geothermal areas in Iceland.

Hellisheidi Geothermal Plant’s purpose is to meet increasing demand for electricity and hot water for space heating in homes and businesses. The production capacity is 303 MW electricity and 133 MW thermal energy.

Energy underground

In Iceland, special wells that reach thousands of meters into the ground access the potential geothermal energy. They penetrate reservoirs of pressurized water. Heated by the Earth’s energy, this water can be more than 300°C  (572°F) in temperature. When released the water boils up from the well, turning partly to steam on the way. At Hellisheidi, the steam is separated from the water to power some of the plant’s seven turbines. The depressurized water then creates more steam, which powers other turbines.

Geothermal Exhibition at Hellisheidi

At Hellishieidi you can experience first-hand how the plant produces green, sustainable energy. A series of interactive exhibits brings the process to life.  You can take an audio-guided tour. It is also possible to arrange guided group visits. Hellisheidi also has a little café area with a panoramic view, as well as a souvenir shop selling quality eco-friendly items.  If you enjoy walking, you might enjoy combining a visit to the cxhibit with hiking on the marked paths in the area.

When is Hellishiedi open to visitors?

Hellisheidi is open daily from 9:00am t0 16:00 (4:00pm), except Icelandic holidays.