Reviewed · BLUE LAGOON & GEOTHERMAL SPAS
Geothermal Energy Exhibition Entry Ticket
Hellisheiði is not a standard power-plant tour. It is an exhibition attached to one of the world’s largest single-site geothermal plants, where clear displays, videos, interactive equipment, and views into the turbine halls explain how Iceland turns heat below the ground into usable power. You explore at your own pace, with staff at the desk if questions come up.
I like two things right away: the hands-on cold-water, hot-water, and steam valve display, which makes the process easy to grasp, and the thoughtful multimedia presentation, including a strong section on carbon sequestration. Free parking and a location on the South Iceland driving route add practical value.
The main catch is simple: you do not walk inside the working plant. You see the turbine halls from the third floor and the machinery from outdoor viewing decks, but this is an exhibition visit, not a behind-the-scenes plant tour. Download the audio guide before you begin, since it adds much more detail than the display panels alone.
Key points to know before you go

- See inside two turbine halls: Viewing areas on the third floor look into both the high-pressure and low-pressure turbine halls.
- Use the free audio guide: Scan the QR code at the front desk or download the ON Geothermal Exhibit app to hear the fuller explanation.
- Expect an exhibition, not a plant walk: Safety and security rules keep visitors out of the active power plant.
- Allow about one hour: The visit can take from one to two hours, depending on how closely you watch the films and read the displays.
- Stop easily on a South Iceland drive: The site has free parking and works well as a planned break on a round trip.
- Pay about $21.69 per person: The price is reasonable for a focused educational stop, especially for families and anyone interested in energy or geology.
What the Hellisheiði exhibition actually offers

The experience begins at the Geothermal Exhibition at the Hellisheiði ON Power plant in South Iceland. You check in, receive your admission, and set your own pace through the exhibits. There is no scheduled walking group or traditional guide leading you from room to room.
That format suits some people very well. I like being able to stop at a display as long as I want, skip material I already understand, and return to anything that catches my interest. Families can move at different speeds, though younger children may need help staying engaged with the technical sections.
Staff are available at the front desk to answer questions. The visit is offered in English, and an audio guide is available for all visitors to download at no extra cost. The audio tour matters here. Several displays are easy to understand on their own, but the app fills in the details and connects the separate parts of the process.
Bring a phone or another internet-connected device for the download. Headphones alone are not enough. The audio guide is digital, so you need a device that can access the app or scan the QR code shown at the front desk.
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From underground heat to Icelandic power

The exhibition’s main job is to explain a process that can sound complicated on paper. Heat from beneath the earth warms underground water. That hot water and steam are brought up through wells, separated, and used to produce electricity and hot water.
The displays break this into manageable steps. The interactive valve exhibit is especially useful because it lets you see the relationship between cold water, hot water, and steam. Instead of reading a paragraph about geothermal production, you get a simple physical picture of what moves through the system and why each stage matters.
The presentation also explains how geothermal energy is harnessed as a long-term energy source. You see the machinery from a visitor’s point of view, then connect it to the wider system that supplies Iceland with power and hot water.
This is a good stop if you want more than a scenic drive through South Iceland. Iceland’s geothermal energy is not just a tourist talking point. It is part of everyday life, and the exhibition shows how natural heat becomes a working utility.
The multimedia displays and carbon sequestration section

The exhibition uses video, graphics, and interactive screens rather than relying only on printed panels. One video art presentation has a particularly polished feel, adding visual interest without replacing the basic explanation of the technology.
I especially like the section on carbon sequestration. It introduces another part of the energy conversation: how carbon dioxide can be handled and stored rather than simply released. The subject is presented as part of the working effort to reduce the environmental impact of energy production.
You do not need a technical background to follow the displays. The explanations aim to make geothermal technology simple, and the equipment is arranged so you can connect the diagrams with the real plant outside.
Still, this is a quiet educational center, not a large entertainment attraction. If you have little interest in geology, engineering, or Iceland’s energy system, you may finish sooner than someone who wants to read every panel and listen to the full audio tour.
Looking into the turbine halls

The most direct connection to the working facility comes from the third-floor viewing area. From there, you can look into both the high-pressure and low-pressure turbine halls.
This view helps correct a common expectation. You are not simply looking at a model or a collection of museum objects. The exhibition is attached to an operating geothermal plant, and you can see real industrial spaces at work from a safe distance.
You should also set your expectations carefully. You cannot enter the plant itself. The active areas are restricted for safety and security, and even exhibition staff cannot go into the operational plant without the required training and clearance.
For some people, that limitation will be disappointing. Anyone hoping to walk beside the turbines, inspect the equipment close up, or join a hard-hat plant tour should choose a different experience. For others, the elevated viewing area provides enough of a connection to make the visit worthwhile.
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Outdoor decks, pipes, tanks, and cooling towers

The exterior observation decks add a second kind of view. From the back decks, you can see the pipe systems, separation tanks, steam regulator, cooling towers, and scrubbing tower.
This is where the exhibition becomes easier to place in the countryside. You have just seen diagrams explaining the flow of hot water and steam, and now you can look at the large-scale equipment that handles those materials.
The surrounding Icelandic scenery also gives the stop some breathing room. The building sits in the countryside, with views beyond the machinery. It is not only a technical indoor visit, though the industrial structures are the main attraction.
Weather can affect this part of the experience. The activity requires good weather, and poor conditions can lead to a cancellation, a different date, or a full refund. Even when the exhibition remains usable indoors, the outdoor decks are best enjoyed when conditions are clear enough for a proper look.
How long should you allow?

The stated visit length is about one to two hours. Many people can see the main displays in roughly an hour, especially if they read selectively and focus on the most useful parts of the audio guide.
Allow closer to two hours if you want to listen carefully, watch the educational films, study the carbon sequestration material, use the interactive displays, and spend time at both indoor and outdoor viewing areas.
The flexible timing makes this a useful road-trip stop. You are not locked into a long guided departure or a fixed sequence. If the weather is changing, you can concentrate on the indoor exhibition. If you have more time, the decks and turbine views reward a slower visit.
I would not build an entire day around the exhibition. Its strength is as a focused stop that adds meaning to a South Iceland route, not as a full-day attraction.
Is the $21.69 admission good value?

At about $21.69 per person, this is fairly priced for a specialized exhibition. You are paying for access to the displays, multimedia material, audio guide, turbine-hall views, outdoor decks, and the chance to understand a major part of Iceland’s energy system.
The value improves if you use the audio guide. The app is included, and the extra explanation helps turn a quick walk around the room into a more complete visit. Skipping it may leave you with attractive machinery views and basic storyboards, but less understanding of how the plant works.
Families should consider the price in relation to interest. Children who enjoy machines, science, and interactive exhibits may get a lot from the valve display and the large equipment outside. Children who need a more active attraction may find the visit quiet.
The free parking also helps. You do not need to budget for a separate parking fee, and the easy stop can fit into a driving day without much planning.
Who will enjoy this stop most?

I would recommend the exhibition most strongly to people with an interest in geology, natural science, engineering, sustainability, or Icelandic daily life. It is also a useful educational stop for families, particularly when adults help younger children connect the interactive displays to the visible machinery.
It works well for anyone already planning to visit the South Iceland countryside. The site is close to other activities, including the MegaZipline, so you may be able to pair it with another stop in the area.
The self-guided format suits independent visitors. You can read slowly, take your time with the videos, and ask staff questions when needed. You do not need to join a group or match someone else’s walking speed.
I would be more cautious if your main goal is an industrial tour. The exhibition explains the plant and provides good viewing points, but it does not let you enter the working facility. That difference should guide your booking decision.
Practical advice for a smoother visit
Download the ON Geothermal Exhibit app or scan the QR code at the front desk. Make sure your phone or tablet can connect to the internet, and bring headphones if you prefer to listen privately.
Give yourself enough time to use the interactive displays rather than rushing from panel to panel. The hot-water, cold-water, and steam valve exhibit is one of the clearest ways to understand the system, so it deserves more than a quick glance.
Ask the staff questions. The visit is self-guided, but that does not mean you are left entirely on your own. A staff member is on duty at the front desk and can help explain points that the audio guide or displays do not make clear.
Plan outdoor viewing around the weather. The countryside views and equipment decks are useful parts of the experience, but poor conditions can reduce what you see and may affect the operation of the activity.
Your mobile ticket is confirmed at booking, and service animals are allowed. Most people can take part, but anyone choosing this visit should be comfortable with a self-guided exhibition rather than expecting a physically demanding plant excursion.
Should you book the Geothermal Energy Exhibition?
Book it if you want a clear, compact explanation of Iceland’s geothermal power system and you are already driving through South Iceland. The interactive displays, carbon sequestration section, turbine-hall views, outdoor machinery, and free parking make it a practical stop with real educational value.
Do not book it expecting to walk through the active plant. That is the one important boundary. You will see the facility from designated viewing areas, but the entry ticket does not provide access to the working turbine rooms.
At $21.69, I consider it a good choice for families, science-minded visitors, and anyone who wants to understand the energy behind Iceland’s hot water and electricity. Use the audio guide, allow about an hour or two, and treat it as a thoughtful roadside exhibition rather than a conventional guided tour.
FAQ
How long does the Geothermal Energy Exhibition take?
The visit takes about one to two hours. A faster visit can take roughly one hour, while listening to the audio guide and studying the displays may require more time.
Is the exhibition a guided tour?
No. It is a self-guided exhibition. You can download the audio guide, and staff are available at the front desk to answer questions.
Can I enter the working geothermal power plant?
No. Safety and security rules prevent visitors from entering the actual plant. You can look into both turbine halls from the third floor and see plant equipment from the outdoor decks.
What can I see from the outdoor viewing decks?
The decks provide views of pipe systems, separation tanks, a steam regulator, cooling towers, and a scrubbing tower. You can also see the surrounding Icelandic countryside.
Is the audio guide included?
Yes. The audio guide is available for all visitors to download at no extra cost. You can use the QR code at the front desk or download the ON Geothermal Exhibit app.
Is parking available?
Yes. Free parking is available at the exhibition.
What is the cancellation policy?
You can cancel up to 24 hours before the experience starts for a full refund. Cancellations or changes made less than 24 hours before the start time are not refunded or accepted. If poor weather causes the experience to be canceled, you will be offered another date or a full refund.
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