Review · BLUE LAGOON & GEOTHERMAL SPAS
Geothermal Energy Exhibition Entry Ticket
The most interesting part of this South Iceland stop is seeing how Iceland turns heat from below the ground into electricity and hot water. At the Hellisheiði ON Power plant, interactive displays explain the process, while upper-floor windows and outdoor decks give you a look at the working plant. I especially like the hands-on valve display, which makes the movement of cold water, hot water, and steam easy to grasp, and the strong multimedia section on carbon sequestration.
I also like the freedom to spend 30 minutes or two hours here, with free parking and no fixed group schedule. The main catch is important: this is an exhibition connected to a power plant, not a guided walk through the plant itself. You can view the turbine halls and equipment from designated areas, but safety rules prevent entry into the operating facility.
In This Review
- Key points to know before you go
- What this exhibition actually is
- Starting with the geothermal process
- Why you should use the audio guide
- The multimedia displays and carbon section
- Seeing the real plant from the exhibition
- How long to allow and how it fits a road trip
- Is $21.69 a fair price?
- Who will enjoy this stop most?
- My practical way to visit
- Should you book the Geothermal Energy Exhibition?
- FAQ
- How long does the Geothermal Energy Exhibition take?
- Can I enter the actual geothermal power plant?
- Is the visit guided by a staff member?
- What do I need for the audio guide?
- Is parking available?
- Can I cancel for a full refund?
Key points to know before you go

- The valve display explains the whole process: Move between cold water, hot water, and steam stages to see geothermal power in plain terms.
- It is self-guided: Download the audio guide or ON Geothermal Exhibit app to your phone for much more detail than the display panels alone.
- You do not enter the working plant: From the third floor and outdoor decks, you can see turbine halls, pipes, separation tanks, cooling towers, and a steam regulator.
- Plan on about an hour: You can move quickly, but the displays and films reward a slower visit, especially if you use the audio guide.
- It fits a South Iceland road trip: Free parking and flexible timing make it an easy stop near other activities in the area.
- The price is $21.69 per person: That is fair for an educational indoor stop, especially for families and science-minded visitors, but less compelling if you want industrial access.
What this exhibition actually is
The name can create the wrong picture. You are not joining a hard-hat plant tour or walking among the machinery with an engineer. You are visiting a purpose-built exhibition attached to Hellisheiði ON Power plant, one of the largest single-site geothermal power plants on the planet.
That distinction matters. If you have toured hydroelectric facilities where you walked through working plant rooms, this experience will feel more limited. The operating plant is restricted for safety and security reasons. Even exhibition staff cannot enter the plant itself.
You still get a useful look at the operation. From the third floor, you can see into the high-pressure and low-pressure turbine halls. The outer observation decks provide views of the pipe systems, separation tanks, steam regulator, cooling towers, and scrubbing tower. You are looking from controlled viewing areas rather than standing beside the equipment, but the connection between the displays and the real machinery is clear.
I think the exhibition works best when you arrive knowing what you booked. Think of it as a science center with a working geothermal plant outside the windows, not as an escorted industrial tour.
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Starting with the geothermal process

The exhibition takes a complex subject and breaks it into steps. Geothermal energy begins with heat under the earth. The plant uses that heat to produce steam and hot water, then channels the steam through turbines to generate electricity.
The interactive cold water, hot water, and steam valve display is one of the clearest parts of the visit. It gives you a physical way to follow the process instead of asking you to absorb a wall of technical text. You can see how the stages relate to one another, which is particularly helpful if you are visiting with children.
The displays also explain how geothermal energy is harnessed as a practical source of power. Iceland is famous for its use of natural heat, but this exhibition helps you understand the engineering behind that reputation. It shows that geothermal energy is not simply a natural wonder. It requires wells, pipes, pressure control, turbines, cooling systems, and careful management.
If you have only a general idea of geothermal power, you can learn a great deal here without a science background. If you already follow geology or energy technology, the exhibition gives you a more focused look at how a large facility operates.
Why you should use the audio guide

Do not rely only on the wall panels. The audio guide is included, and it adds detail that you can easily miss while walking through the rooms. You can download it from the code at the front desk or use the ON Geothermal Exhibit app.
You need a phone, tablet, or another internet-connected device to download the guide. This has caught some people off guard, especially families who arrived with headphones but no suitable device for the children. Bring your own phone and headphones if you want to listen comfortably. The supplied information does not indicate an extra charge for the audio guide.
The guide also changes the pace of the visit. Without it, you may walk through in well under an hour, reading panels and watching the film. With it, you can pause at the machinery views, replay explanations, and take in the environmental sections at your own speed.
Staff are available at the front desk to answer questions. This is not a scheduled guided tour, so you should not expect a person to lead you from station to station. Still, the staff can help you get the app working and explain points you do not understand.
The multimedia displays and carbon section

The exhibition uses videos, interactive screens, educational films, and visual art rather than relying only on printed information. The multimedia approach gives the visit a modern feel and helps break up the technical material.
One especially worthwhile section covers carbon sequestration. That subject adds an important note of realism to the energy story. Geothermal power is often described as green and sustainable, but large energy systems still raise questions about emissions and how they are managed. The carbon displays give you a chance to consider that wider picture.
The video art is another unexpected feature. It is not the main reason to pay admission, but it adds a more reflective pause between the technical displays. The architecture also gets attention, and the building provides good views of the Icelandic countryside around the plant.
For children, the combination of moving images, controls, and simple explanations can work better than a traditional museum. Keep in mind that younger children may need help with the phone-based audio guide. A family visit will be easier if one adult handles the app while the children focus on the hands-on exhibits.
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Seeing the real plant from the exhibition

The viewing areas are the bridge between the exhibition and the actual Hellisheiði facility. From inside, you can look into both turbine halls from the third floor. The views are not the same as entering the plant floor, but they help put the diagrams into context.
Outside, the decks let you see more of the plant’s working systems. Look for the pipe networks, separation tanks, steam regulator, cooling towers, and scrubbing tower. These features can look like a jumble if you do not know what you are seeing, so this is another good reason to use the audio guide or ask the front desk staff for help.
The outdoor views also give the visit a sense of place. You are not in a sealed museum room. The plant sits in the Icelandic countryside, and the surrounding scenery makes the scale of the operation easier to appreciate.
Weather matters here. The exhibition requires good weather, and poor conditions can lead to a cancellation, a different date, or a full refund. Even on a normal visit, the outdoor decks will be less enjoyable in bad weather, so allow yourself time to return inside and finish the displays.
How long to allow and how it fits a road trip

The recommended duration is about one to two hours. I would allow at least an hour if you plan to use the audio guide, watch the films, try the interactive displays, and spend time at the viewing areas.
You can make it shorter. A quick visit might cover the main panels, the valve display, a film, and a look into the turbine halls. But paying the admission fee for a rushed 20-minute stop would reduce the value.
This is a useful addition to a South Iceland round trip because you set your own pace. There is no departure time to catch, and free parking makes the stop simple by car. It is also close to the MegaZipline, so you can pair the exhibition with that activity if it suits your plans.
I would not build an entire day around the exhibition. It is compact, and one of the less favorable impressions comes from expecting a larger facility or a longer industrial visit. Instead, use it as an educational pause between outdoor attractions. It gives you a warm indoor option when you want a break from driving or sightseeing.
The ticket is mobile, and confirmation arrives at booking. The experience is offered in English. Most people can take part, and service animals are allowed.
Is $21.69 a fair price?

At $21.69 per person, this is not a bargain attraction in the way a free viewpoint is. It is priced more like a small specialist museum. The value depends on what you want from the stop.
I think the price is reasonable if you enjoy science, geology, energy systems, or practical environmental subjects. Families may also find it worthwhile because the interactive features give children something to do while adults follow the explanations. The audio guide, films, plant views, and staff support are included, so you are not paying extra for the most useful parts.
The value is weaker if your main aim is to enter the power plant. You cannot do that. You will view the facility from designated areas and learn about its operation through the exhibition. If you have no strong interest in geothermal energy, the compact size may make the admission feel high.
The exhibition’s average booking time, about 34 days ahead, suggests that planning ahead is sensible during a busy Iceland trip. The ticket allows free cancellation up to 24 hours before the start time for a full refund. Cancellations or changes made within 24 hours are not refunded or accepted. Weather-related cancellations offer a different date or a full refund.
Who will enjoy this stop most?

I would recommend it most strongly to:
- Families looking for an educational activity with interactive displays
- Adults interested in geology, engineering, or renewable energy
- Visitors who want context for Iceland’s geothermal power system
- Anyone planning a South Iceland drive and needing a flexible one-hour stop
- People who enjoy self-guided museums rather than fixed group tours
I would be more cautious if you want a personal guide, access to restricted machinery rooms, or a large-scale industrial walk. The staff can answer questions, but the standard experience is self-guided. The plant is viewed from above and from outdoor observation decks.
You should also consider your phone setup. Downloading the audio guide requires an internet-connected device. A phone with headphones will make the visit much smoother, particularly if you want to hear every explanation without holding the device at speaker volume.
My practical way to visit
I would begin at the front desk and ask about the audio guide before looking at the displays. Download the app or guide immediately, then take a quick look around to understand the layout.
Next, I would spend time with the valve display. It is the best first explanation of how water and steam move through the system. After that, follow the audio guide through the multimedia displays, films, and carbon sequestration section.
I would save the turbine hall views and outer decks for the second half. By then, you will recognize the equipment and understand why the pipes, tanks, cooling towers, and steam systems matter. Finish by asking the staff about any part of the process that still seems unclear.
That order keeps the real plant views from becoming a confusing collection of metal structures. It also gives you enough flexibility to shorten the visit if your road schedule changes.
Should you book the Geothermal Energy Exhibition?
Book it if you want a clear, well-presented introduction to geothermal energy and are happy to explore at your own pace. The strongest features are the hands-on process display, useful audio guide, multimedia material, carbon sequestration section, and views into the turbine halls. Free parking and flexible timing make it easy to add to a South Iceland drive.
Skip it if you expect to walk through the operating plant or join a traditional guided tour. The admission buys access to an exhibition connected to the facility, not the plant floor itself.
For the right visitor, $21.69 buys a thoughtful hour of learning and a better understanding of one of Iceland’s most important energy sources. Just arrive with a phone, use the audio guide, and keep your expectations fixed on the exhibition rather than unrestricted plant access.
FAQ
How long does the Geothermal Energy Exhibition take?
Allow about one to two hours. A quicker visit is possible, but using the audio guide, watching the films, and visiting the viewing areas can make an hour or more worthwhile.
Can I enter the actual geothermal power plant?
No. For safety and security reasons, visitors cannot enter the working plant. You can look into the high-pressure and low-pressure turbine halls from the third floor and view plant equipment from the outdoor decks.
Is the visit guided by a staff member?
The ticket provides a self-guided audio tour rather than an escorted tour. Staff are on-site at the front desk and can answer questions during your visit.
What do I need for the audio guide?
Bring an internet-connected phone, tablet, or similar device so you can download the audio guide or ON Geothermal Exhibit app. Headphones are also useful for listening comfortably.
Is parking available?
Yes. Free parking is available at the exhibition.
Can I cancel for a full refund?
Yes. You can cancel at least 24 hours before the experience start time for a full refund. Cancellations and changes made less than 24 hours before the start time are not accepted or refunded. If poor weather causes the experience to be canceled, you will be offered another date or a full refund.
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