Projects
Hekla Fields completes first phase of production
Marcus Reinhardt
Chief Operating Officer
Fourteen production wells have been successfully drilled into the geothermal reservoir beneath the Hekla volcanic highlands of southern Iceland. Reservoir temperatures have exceeded pre development estimates confirming Hekla Fields as one of the most productive geothermal sites ever developed anywhere in the world.
The first phase of production well drilling at Hekla Fields is complete. Over eighteen months Quantrex's geothermal engineering team drilled fourteen wells into the reservoir beneath the southern Icelandic highlands reaching depths of between 2000 and 3100 metres.
Intense geothermal reservoirs
The results confirm what the exploration data suggested. Hekla Fields sits above one of the most thermally intense geothermal reservoirs in the North Atlantic. The resource is larger deeper and hotter than the conservative estimates used to underpin the project's financial model. That upside has important implications for the facility's long term output profile and for the sustainability of the reservoir over its planned sixty year operating life.
Exceptional drilling results
Dr Elena Sato Chief Technology Officer at Quantrex described the drilling results as exceptional. The team has found a reservoir that is performing beyond our most optimistic pre drill scenarios. The temperatures we are seeing at these depths confirm that Hekla Fields will deliver at the top end of its capacity projections from day one of operation. The quality of this resource is genuinely rare.
Next phase production
With the production wells now in place the project moves into its next phase. Surface infrastructure including the turbine hall steam gathering system and grid connection substation is currently under construction with completion expected in the first half of 2027.
Steam testing of the production wells will begin in the third quarter of 2026 providing the first live flow data from the reservoir and allowing the engineering team to finalize turbine configuration and output projections ahead of commissioning.
Powering 2028
The project remains on track for first power in 2028. When fully operational Hekla Fields will deliver 320 MW of continuous zero carbon electricity and clean district heating to more than 180000 Icelandic homes. It will be the largest geothermal facility in Iceland and one of the ten largest in the world.
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